[0001]This application claims the August 2, 2016 filed Chinese Patent Application No. 201610625551.6, entitled priority "electronic apparatus and method for controlling a network terminal and a central processing node," the Chinese Patent Application, the entire content incorporated by reference in the present application.
FIELD
[0002]Embodiment of the present invention relates generally to the field of wireless communications, particularly to a wireless communication system using a large-scale antenna technology, and more particularly, to an electronic device and a method for an electronic apparatus and method for controlling a network terminal and a central processing node .
Background technique
[0003]
Large-scale antenna technology is the key technology for wireless communications bearer ultrahigh rate requirements, and accordingly, large-scale use of the network control terminal antenna technology such as a wireless communication system requires a lot of base stations and a radio frequency signal processing module, leading to higher power consumption, which for the realization of green communication concept is a huge challenge. Accordingly, desirable to be able improve the energy efficiency of large-scale antenna system, i.e., increase the number of bits transmitted per unit of energy.
[0004]
SUMMARY
[0005]
A brief overview of the present invention hereinafter in order to provide a basic understanding of some aspects of the present invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to identify key or critical part of the invention, nor is it intended to limit the scope of the present invention. Its sole purpose is to present some concepts in a simplified form, as a prelude to the more detailed description that is discussed later.
[0006]
According to one aspect of the present disclosure, there is provided an electronic terminal used in a network control apparatus, comprising: a network between the control terminal and the respective user equipment acquires a network control terminal and one or more neighboring: a processing circuit configured to demand information service channel of user device channel characteristic information and the respective network control terminal of the service, wherein the network control terminal and neighboring network control terminal adopts joint precoding for downlink data transmission; and based on requirement information service, and channel feature information to determine whether the network control terminal and the control terminal of the network number of transmitting antennas to be used adjacent.
[0007]
According to another aspect of the present disclosure, there is provided an electronic device for a central processing node, comprising: a processing circuit configured to: obtain a user equipment adjacent to each respective network control terminal and the control terminal of the network and services between channel feature information needs channel information and the user equipment and services, wherein each network control terminal adopts joint precoding for downlink data transmission; and the demand for information services based on the channel characteristics of the channel information and the user device, to determine respective network control the number of antennas to be used in the transmitting end.
[0008]
According to another aspect of the present disclosure, there is provided a method of controlling a network terminal, comprising: obtaining a channel feature information of a channel between a network control terminal and the one or more neighboring network control terminal and the respective user equipment and the respective demand information services network of the user equipment served by the control terminal, wherein the control terminal and the network terminal using the neighboring network control joint precoding for downlink data transmission; and based on the information needs and channel characteristic information of the service, to determine whether the network number of transmit antennas and a control terminal neighboring network control terminal to be used.
[0009]
According to another aspect of the present disclosure, a method is provided for a central processing node, comprising: obtaining a channel feature information of a channel between a user equipment adjacent to each respective network control terminal and the control terminal of the network and services as well as demand information services said user equipment, wherein each of the network control terminal adopts joint precoding for downlink data transmission; and the demand for information services based on the channel characteristics of the channel information and the user equipment, to determine the number of transmit antennas for each network control terminal to be used.
[0010]
Other aspects according to the present invention there is also provided a computer program product and computer program code for a method for controlling a network terminal and a central processing node and having recorded thereon a computer program code for implementing the methods readable storage medium .
[0011]
The electronic device and the method of the present application by the user equipment based on the service requirements and channel characteristic information of a plurality of jointly determining the number of transmit antennas each network control terminal the control terminal of the network to be used in adjacent, able to optimize the number of antenna selection, and help meet the needs of users.
[0012]
Detailed description of the preferred embodiments of the present invention in conjunction with the following drawings, the above and other advantages of the present invention will become more apparent.
BRIEF DESCRIPTION
[0013]
To further illustrate the above and other advantages and features of the present invention, the following drawings of specific embodiments of the present invention will be further described in detail in conjunction. The drawings together with the detailed description are included in the present specification and a part of this specification is formed. Elements having the same function and structure are denoted with the same reference numerals. It should be understood that a typical example of the present invention that these drawings depict only, and should not be considered as limiting the scope of the present invention. In the drawings:
[0014]
FIG. 1 is a functional block diagram illustrating a control terminal of the electronic apparatus according to an embodiment of the present network application;
[0015]
FIG 2 is a diagram showing a schematic example of the distribution network and the end user control device;
[0016]
FIG 3 is a functional block diagram illustrating an electronic device to a central processing node of the present application in accordance with one embodiment;
[0017]
FIG 4 is a flowchart illustrating a method of controlling a network terminal according to an embodiment of the present disclosure;
[0018]
FIG 5 is a flowchart illustrating a method for a central processing node according to an embodiment of the present application;
[0019]
FIG 6 shows an example of a flow of information;
[0020]
FIG. 7 shows another example of a flow of information;
[0021]
Figure 8 shows a block diagram of an exemplary schematic configuration of the server;
[0022]
FIG 9 is a block diagram of a first example of a schematic configuration of an eNB may be applied is shown in the art of the present disclosure;
[0023]
FIG 10 is a block diagram of the second example of a schematic configuration of an eNB may be applied is shown in the art of the present disclosure; and
[0024]
FIG 11 is a block diagram of an exemplary configuration of a personal computer according to the general method of Example of the present invention and / or devices and / or systems may be implemented.
Detailed ways
[0025]
The exemplary embodiment of the present invention will be described below in conjunction with the accompanying drawings. For clarity and conciseness, in the specification are not all features of an actual implementation. However, it should be understood that many decisions must be made to the specific embodiments of the development of any such actual embodiment of the process in order to achieve the developer's specific goals, such as compliance with those restrictions related systems and services, and these restrictions may be subject to change with different embodiments. In addition, it should be understood that, although the development work can be very complex and time-consuming, but the benefit of this disclosure to those skilled in the, this development is only a routine task.
[0026]
Here, also be noted that, in order to avoid unnecessarily obscuring the details of the present invention, the drawings only shows a solution according to the present invention closely related to the device structure and / or processing steps, omitted Further details of the present invention has little relationship.
[0027]

[0028]
As described above, in a wireless communication system using a large-scale antenna technology, the transmitter and the receiver the respective RF power terminal and the signal processing module becomes relatively high. Therefore, considering the optimization of power consumption. In particular, in the presence of various power models, especially the complex issues need to be considered in the case of multiple subsystems.
[0029]
Further, with large-scale antenna art communication systems typically limited to pilot pollution, i.e., since the communication subsystem uses the same two pilot sequences for data transmission on the uplink interference caused by channel estimation. May be eliminated or suppressed pilot contamination by other means such as joint pre-coding, so that the performance of communication systems with the number of transmit antennas increases growth, tends not a limit.
[0030]
In the present embodiment, the electronic device 100 is provided for controlling the network terminal, the number of transmit antennas used for optimization, for example, to improve the energy efficiency of the system, meet the various needs of the user equipment.
[0031]
Wherein the network control terminal refers to a communication system for communication settings active, control, communication resource allocation function entity, such as a cellular communication system a base station and a small base station, C-RAN (Cloud-RAN / Centralized -RAN) the structure of the baseband cloud devices (cell concept may not be present), and the like, for example, any one BBU BBU pool communicating with each other at high speed C-RAN architecture. It refers to a user equipment in a communication system entity using communication resources to achieve its purpose of communication, such as cellular communications capability with the mobile terminal, intelligent vehicles, intelligent wearable devices. Note that, in some cases, the user equipment may be a network infrastructure such as small-cell base stations.
[0032]
FIG 1 shows a functional block diagram, an electronic device of the present application is an electronic device for controlling the network terminal 100 of the embodiment 100 comprises: an information acquisition unit 101, is configured to acquire a network control terminal and one or more phase demand information service channel feature information of a channel between neighboring network control terminal and the respective user equipment and the user equipment respective network control terminal of the service, wherein the network control terminal and neighboring network control terminal employed jointly precoded downlink data transmission; and a determination unit 102, configured to service demand information and the information based on channel characteristics, to determine whether the network control terminal and the control terminal of the network number of transmitting antennas to be used adjacent.
[0033]
When the network control terminal with multiple antennas, the beamforming may be performed to achieve a more efficient downlink data transmission. In time division duplex mode, the downlink beamforming vector reciprocity can be obtained by estimating the uplink channel using the uplink and downlink channels. However, if the two ends of the control network using the same pilot sequences, the estimated uplink channel will be affected. For example, the uplink channel estimation a network control terminal may be interfered with another network using the same set of pilot control terminal user pilot sequence, thereby generating pilot pollution. In order to effectively overcome such pilot pollution may be employed between the joint precoding technology network control terminal to downlink data transmission.
[0034]
As one example, may be employed PCP (pilot contamination pre-coding, precoding pilot pollution) technology as the joint precoding for downlink data transmission techniques. However, it should be understood that the joint precoding technique is not limited to the PCP, other precoding techniques can be eliminated or suppressed pilot pollution may also be employed.
[0035]
Further, in the present application, the network in between adjacent joint precoding control terminal, the control terminal neighboring networks may be geographically adjacent network control terminal, and / or mutual interference is generated between the predetermined degree than the network control terminal. Hereinafter, for convenience of distinction, also referred to as a control terminal of the one network terminal of this network control.
[0036]
When a joint precoding techniques, it is necessary between the network control terminal channel feature interaction channel information to obtain the channel characteristic information of a channel between the user equipment neighboring network control terminal of each network control terminal served, channel characteristics of these channel information e.g. estimates obtained from the neighboring network terminal through the uplink control channel, wherein each user equipment served by the network control terminal includes a user terminal apparatus according to the network service control user equipment and the respective adjacent end network control services. Furthermore, the network control terminal via an uplink channel estimate may obtain the channel between the channel feature information of a channel and a local network control terminal between the local network control terminal end of the present network controlling the user equipment and the user equipment neighboring network control terminal of channel characteristic information.
[0037]
For example, the channel characteristic information may include one or more of: large-scale fading coefficient, small-scale fading coefficient, the signal angle of arrival, time and channel correlation. May be suitably selected according to the channel feature information joint precoding technique employed. For example, when using PCP precoding technique, channel characteristic information may be a large-scale fading coefficients.
[0038]
Further, the information acquiring unit 101 also acquires the service needs of the user equipment needs to respective network control terminal. Wherein the service needs of the user equipment is to determine and provide the user service requests according to their corresponding network equipment by the control terminal. Service requirements of the user equipment may be, for example, data transmission rate needs of the user equipment. It should be appreciated that the representation of the service demands and channel characteristic information of the user equipment is not limited to the examples given herein, but may be suitably selected according to the application.
[0039]
Since the channel feature information of the state of the channel, and the service needs of the user equipment represents the requirements of data transmission capacity channel, different channel conditions or the needs of different services may be different for the number of transmitting antennas needs. Accordingly, the determination unit 102 determines the number of transmitting antennas to a respective control terminal of the network to be used based on both the channel feature information service requirements and the user equipment.
[0040]
Wherein the channel feature service needs information of a channel between the user equipment and the respective neighboring network control terminal the control terminal of the network and the user equipment served by the network control terminal is adjacent and services may be obtained by information exchange between the network control terminal .
[0041]
Shown in phantom in FIG. 1, the electronic device 100 may further comprise: a transceiver unit 103, configured to receive information channel characteristic information and service requirements of the user equipment from the neighboring network control terminal. Wherein the information service needs of the user equipment can be obtained according to the request information transmitted by the user equipment to a respective control terminal of the network.
[0042]
In one example, the transceiver unit 103 is configured to receive said information via a signaling exchange between the network control terminal. For example, in the case of LTE communication system, the above can be achieved by X2 signaling interaction between the base stations.
[0043]
In addition, the transceiver unit 103 may also be configured to transmit the network control terminal adjacent to the determined number of transmit antennas of the network control information to be used adjacent to an end. The transceiver unit 103 may be implemented as an array antenna or antenna and associated signal processing module.
[0044]
After the information acquisition unit 101 acquires various pieces of information described above and supplied to the determining unit 102, determination unit 102 based on the information for determining the number of transmit antennas to be used. Since taking channel (e.g., including a channel between a local network control terminal and its user equipment between the service needs of the network control terminal and the neighboring network control end user devices and each network control terminal and each user equipment, channel between the channel and the control terminal of the adjacent network between the local network and the user equipment control terminal adjacent to the control terminal and the network according to the present network control side) of the channel characteristic information of adjacent channels between the network and its control terminal user equipment, it is possible to effectively optimize the number of transmit antenna selection.
[0045]
In one example, the determination unit 102 is configured to: information based on the service requirements of a particular user equipment of the user equipment respective network control terminal served by and channel characteristics, to determine the minimum number of transmit antennas each network control terminal, and transmitted according to the minimum the number of antennas, the number of transmit antennas to be used for each network control terminal of the joint optimization.
[0046]
Wherein a user may control the specific user equipment terminal equipment served by the highest priority for the user equipment respective network. I.e., having the highest priority service requirements of the user equipment calculates the minimum number of transmit antennas as the standard. It should be appreciated, selection of a particular user equipment is not limited thereto, but may be selected according to the requirements and the state of communication / or communications systems, e.g., for the specific user equipment may also specify a user equipment, a user equipment highest demand for services, or service needs the lowest user equipment, and so on.
[0047]
As one example, it is possible to maximize the overall energy efficiency of the communication system according to the optimization goal, the present communication system includes a network control terminal and a user equipment served by the neighboring network and a user equipment terminal and its control services. By providing the optimization goal, the determination unit 102 may determine the maximum number of transmit antennas such that the overall energy efficiency.
[0048]
As another example, the user may be the overall energy efficiency of the network equipment to maximize the respective control terminal served optimization target. By providing the optimization goal, the determination unit 102 may determine the number of transmit antennas such that the highest energy efficiency of the user equipment.
[0049]
As yet another example, it may also be the overall energy efficiency of the respective control terminal of the network is maximized optimization target. By providing the optimization goal, the determination unit 102 may determine the number of transmit antennas such that the highest energy efficiency of the network control terminal. It should be understood, you can also set other optimization targets can be set according to actual requirements.
[0050]
When joint optimization is performed, the determining unit 102 may be configured to transmit the number of antennas at the fixed end of the other network control, the number of transmit antennas sequentially for each network control terminal to be used for optimization. It should be understood that this is merely one example, another embodiment of joint optimization can be employed to optimize the number of transmit antennas.
[0051]
In one example, when using PCP precoding technique, channel characteristic information may be a large-scale fading coefficients, and the minimum number of transmit antennas is analytic functions and service needs of large-scale fading coefficients. In this example, the channel, the network control terminal of each of the estimated obtaining the network control terminal and the respective user devices (including both the network control apparatus of the user terminal device and user service neighboring network service control terminal) through an uplink channel between the large-scale fading coefficients, and the large-scale fading coefficients to the control terminal of the neighboring networks. In addition, each network control end user demand for its services will also be provided to neighboring network equipment control terminal.
[0052]
Specifically, assuming adjacent T network control terminal (control terminal comprises a network including the present), the control terminal of each network to serve both the user equipment K (K may be different for different network control terminal), the p ( p = 1,2, ..., T) network using a control terminal M p downlink data transmission antennas for precoding PCP, the p-th terminal served by the network control section k (k = 1,2, ..., K ) up speed downlink user equipment R & lt KP can be approximated as:
[0053]
[Number 0001]

[0054]
Wherein, p D , p U , [tau] are pilot sequence length of the uplink transmit power and turned average transmit power of the network control terminal, user equipment, for the m-th k-th network control terminal of the signal of the user equipment to the p-th network control large-scale side fading coefficients, C KMP and Q p is a function of large-scale fading coefficient and the p-th network control terminal related, wherein, C KMP is the m-th row PCP precoding matrix constructed with the k-th user related p-th column element, which is a large-scale fading coefficients related functions, Q p interference term signal represents, with p D , p U , [tau], and large scale fading coefficients associated function. As can be seen, up to a rate of R & lt KP on a large scale fading coefficients, the number of adjacent network control function and the number of terminal transmit antennas.
[0055]
When the service needs of the user equipment control terminal of the p-th network served by the data transmission rate R p when expressed, by transforming the above formula (1), the minimum number of transmit antennas can be obtained the desired p-th network control terminal
[0056]
[Number 0002]

[0057]
As can be seen, the minimum number of transmit antennas is the data transmission rate needs of the user equipment, the network control terminal, and the number of large-scale fading coefficients associated adjacent function.
[0058]
Next, in the calculation of the minimum number of transmit antennas required for a control terminal of each of the network after the determining unit 102 accordingly optimize the number of transmit antennas to be used. Below to improve the overall energy efficiency optimization goal to describe a process of optimization as an example.
[0059]
Suppose the antenna of the user equipment transmission power P U , the antenna transmission power network control terminal is P D , efficiency θ> 1, RF power network control terminal is P C , others (such as baseband processor) power consumption is P O , the for this T communication system network and the control terminal of the user equipment configuration, overall power consumption P Total is:
[0060]
[Number 0003]

[0061]
Thus, the overall energy efficiency of the EE system sys is:
[0062]
[Number 0004]

[0063]
Wherein, B is a communication bandwidth. By making the determination unit 102 may EE SYS to optimize the number of antennas M respective control terminal of the network to maximize p selection.
[0064]
As one example, the present embodiment provides a downlink transmit antenna selection number (downlink transmit antenna number selection, DOTAN ) policy. The minimum number of transmit antennas in the policy, in order to effectively meet the service needs of the user equipment, will be obtained earlier as the constraints of the policy (i.e., the minimum number of transmit antennas actual number of transmit antennas greater than) and fixing other network control terminal under conditions of the number of transmitting antennas, the number of transmit antennas sequentially for each network control terminal to be used for optimization. In other words, for example, the n-th to optimize the network control terminal, a fixed number of transmit antennas other network control terminal, when n is 1, the number of transmit antennas other network control terminal is fixed to the respective minimum number of transmit antennas and when n is when other natural number, for other network control terminal have been made to optimize the network control terminal, the number of transmit antennas will be fixed to their optimum values, but not yet optimized for network control terminal, the number of transmit antennas is fixed to its minimum transmit the number of antennas subsequently, the number of transmit antennas of the n network control terminal at which the minimum number of transmit antennas and the network control terminal has the maximum number of antennas M max changes between, found that EE SYS maximum number of antennas as a transmission which is to be used the number of antennas.
[0065]
Particularly, in the case of only two neighboring network control terminal, said DOTAN policy can be expressed as follows:
[0066]
The first step : make
[0067]
For
[0068]
Looking for making EE SYS maximize
[0069]
End For
[0070]
Step two : make
[0071]
For
[0072]
Looking for making EE SYS maximize
[0073]
End For
[0074]
Among them, first and second stages respectively changed to first look and then find that this is not restrictive.
[0075]
It should be understood that the above description of the Dotan strategy merely exemplary, Dotan strategy is not limited thereto, but various optimization methods can be employed. Further, although the above to improve the overall energy efficiency of the communication system has been described for the optimization goal, it is to be understood that the above description applies equally to other optimization goals, only appropriately modified formula (4) can be.
[0076]
For ease of understanding, FIG. 2 shows a schematic example of a distributed network control terminal and the user equipment, wherein, using the concept of a cell of a cellular communication system, in this case, the network control terminal is a base station, for example, the electronic device For example in a base station 100 or communicatively connected to a base station. It should be understood that this is merely illustrative, application scenarios of the present technique can be applied is not limited to the case of having a cell division, but may be applied to any wireless communication systems using large-scale antenna technology. In addition, FIG. 2 shows two adjacent cells, this is not limitative, there may be three or more adjacent cells.
[0077]
In FIG. 2, triangles represent a cell a user equipment (UE), respectively, each base station is equipped with M max antennas (for example, more than 100), and each cell has the K UE simultaneously serving base station. In time division duplex mode, the downlink beamforming vector reciprocity can be obtained by estimating the uplink channel using the uplink and downlink channels. However, if two cells using the same pilot sequences, the estimated uplink channel will be affected. For example, in the cell 1 uplink channel estimated interference from the cell 2 using the same set of pilot sequence the user, resulting in a pilot pollution. In order to effectively overcome such pilot pollution, the joint inter-cell precoding techniques such as PCP precoding for downlink data transmission may be employed.
[0078]
In this case, the demand for information exchange between the base station channel characteristic information and services the UE through signaling interaction. The electronic device 100 may present this information to determine the base station described above and the number of transmitting antennas to be used adjacent to the base station, and the corresponding information on the number of transmitting antennas may be provided based on a neighbor base station.
[0079]
As described above, the electronic device 100 of the present embodiment by the number of information based on the channel characteristic between the user equipment and the service needs of each individual user terminal and a network control device, to determine respective transmit antenna network control terminal to be used can be obtained at least one of the following advantages: optimized number of transmit antenna selection, increase system efficiency, demand for services of the user equipment. Further, the number of transmit antennas determines simple processing, calculation load is small, the processing speed is fast, easy to implement.
[0080]
100 in respective units of the electronic device, for example, may be implemented by one or more processing circuits, for example, the processing circuit may be implemented as a chip.
[0081]

[0082]
FIG. 3 shows a functional block diagram, the electronic devices for a central processing node according to one embodiment of the present disclosure 200 200 comprising: information obtaining unit 201, configured to acquire the control terminal adjacent to each respective network channel characteristics needs information of a channel between the user equipment network control terminal of the service information and user equipment services, wherein each network control terminal adopts joint precoding for downlink data transmission; and a determination unit 202, is configured based on the channel feature demand information and the service information of the user equipment, determining a respective number of transmit antennas to use the network control terminal.
[0083]
In this embodiment, a number of transmit antennas determines the respective control terminal of the network to be used by the electronic device 200 on the central processing node. For example, a central processing node communicatively connected to the control terminal of each network management within its scope. Each network control terminal which needs to report channel characteristic information, and service demand information of the user equipment 200 to the electronic device. Channel characteristic information and the service needs from the appropriate network control terminal, as described in the first embodiment.
[0084]
Shown in phantom in FIG. 3, the electronic device 200 may further comprise: a transceiver unit 203, configured to receive a demand information from each server of the network control channel characteristic information, and the user equipment. In addition, the transceiver 203 may further be configured to transmit information on the number of transmit antennas to be used to its respective control terminal network.
[0085]
Transceiving information transceiving unit 203 may be implemented by wireless communication, e.g., a transceiver unit 203 may be implemented as an array antenna or antenna and associated signal processing module. The information transmission and reception by wired communication can also be achieved, for example, the transceiving unit 203 may be implemented as a communication module.
[0086]
After the information acquisition unit 201 acquires the information described above and supplied to the determining unit 202, determination unit 202 based on the information for determining the number of transmit antennas. In one example, the transceiver unit 203 is further configured to provide a channel feature information of neighboring networks network control terminal the control terminal to the network control terminal for its joint precoding use. Alternatively, the channel characteristics may be arranged directly between the end of the interaction channel network control information. It will be appreciated that in the present embodiment, since the number of transmit antennas for jointly determined by the electronic device on the central processing node 200, therefore, need not demand interactive service information between the network control terminal, or even need an interaction channel characteristics information.
[0087]
Similar to the first embodiment, the channel feature information may be one or more of the following: fading coefficients large scale, small scale fading coefficient, the signal angle of arrival, time and channel correlation. Service requirements of the user equipment may be, for example, data transmission rate needs of the user equipment. And, expressing the parameters may be selected and channel characteristic information according to the service needs of the joint precoding method used and the actual requirements.
[0088]
In the present embodiment, the determination unit 202 may be similar to the first embodiment of the manner for determining the number of antennas. Described for the first embodiment, the determination unit 102 also apply to the determination unit 202, and therefore, detailed description will be omitted hereinafter determination unit 202.
[0089]
In one example, unit 202 may information based on the service requirements of a particular user equipment of the user equipment respective network control terminal of the service as well as the channel characteristic determination, determining the minimum number of transmit antennas each network control terminal; and according to the number of the minimum transmit antenna, each of the number of transmit antennas to use the network control terminal joint optimization.
[0090]
Illustratively, it may be to maximize the overall energy efficiency of the communication system according to the optimization target, wherein the communication system includes a user equipment control terminal and each network it serves. Alternatively, the user may be the overall energy efficiency of the network equipment to maximize the respective control terminal served optimization target. Alternatively, the overall energy efficiency of the respective network to the control terminal maximize optimization goal.
[0091]
When joint optimization is performed, for example, the number of transmitting antennas at fixed control terminal of the other network, the number of transmit antennas sequentially for the respective control terminal of the network to be used for optimization. Illustratively, DOTAN policy described above may be employed.
[0092]
In one example, a particular user may be a user equipment device a respective control terminal of the network served by the highest priority of the user equipment.
[0093]
As described above, the electronic device 200 based on the embodiment of the channel characteristic information between the user equipment and the service needs of each individual user terminal and a network control device, to determine respective transmit antenna control network terminal number to be used according to the present embodiment can be obtained at least one of the following advantages: optimized number of transmit antenna selection, increase system efficiency, demand for services of the user equipment. Further, the number of transmit antennas determines simple processing, calculation load is small, the processing speed is fast, easy to implement.
[0094]
The electronic device 200 may be implemented, for example, respective units through one or more processing circuits, for example, the processing circuit may be implemented as a chip.
[0095]

[0096]
Process describes an electronic device in the embodiments in the above, it is clear also disclosed some processes or methods. Hereinafter, a summary of these methods is given in some cases will not be repeated in detail already discussed above, it should be noted that although these methods are disclosed in the description of the process of the electronic device, but these methods are not necessarily employed as described It is not necessarily performed by those components or those components. For example, the above-described embodiment, the electronic device may be partially or fully implemented using hardware and / or firmware, and the corresponding method discussed below can be fully implemented by computer-executable program, although these methods may also be employed for the electronic hardware and / or firmware of the device.
[0097]
Figure 4 shows a flowchart of a method of controlling a network terminal according to an embodiment of the present application, the method comprising: obtaining a network control terminal and the one or more neighboring network control terminal and the control terminal of the respective network services channel feature information of a channel between the user equipment (S12), wherein the network control terminal and neighboring network control terminal adopts joint precoding for downlink data transmission; and based on the demand information of the service and the channel feature information, respectively for determining the network number of transmit antennas and a control terminal the control terminal of a neighboring network to be used (S13).
[0098]
A dashed box shown in FIG. 4, the above-described method may further comprise the step S11: the service needs to receive information from the channel characteristic information and user equipment control terminal of the neighboring networks. For example, in step S11 via signaling interaction network between the control terminal to receive the information.
[0099]
Another dashed box shown in FIG. 4, the above-described method may further include Step S14: transmission antenna number information of the neighbor network control terminal to be used in transmitting the determined control terminal to the neighboring network.
[0100]
By way of example, the channel characteristic information may include one or more of the following: large-scale fading coefficient, small-scale fading coefficient, the signal angle of arrival, time and channel correlation. Service needs of the user equipment can transmit the data rate requirements of the user equipment. However, it should be understood that these examples are not limiting.
[0101]
In the case where the channel characteristic information to the large-scale fading coefficients, the minimum number of transmit antennas is a function of service requirements and an analysis of large-scale fading coefficients.
[0102]
In one example, in step S13, based on the service requirements of a particular user device the user device the respective network control terminal served by and channel characteristic information to determine the minimum number of transmit antennas each network control terminal, and the number of the minimum transmit antenna according to each of the number of transmit antennas to use the network control terminal joint optimization.
[0103]
For example, may be to maximize the overall energy efficiency of the communication system optimization objectives, the present communication system includes a user equipment and a network control terminal and the user equipments served by the network control terminal and its adjacent and services. Alternatively, the user may be the overall energy efficiency of the network equipment to maximize the respective control terminal served optimization target. Alternatively, the overall energy efficiency of the respective network to the control terminal maximize optimization goal.
[0104]
Joint optimization is performed in step S13, for example, the number of transmitting antennas at fixed control terminal of the other network, the number of transmit antennas sequentially for the respective control terminal of the network to be used for optimization.
[0105]
For example, the specific user may control the user equipment terminal apparatus served by the highest priority for the user equipment respective network.
[0106]
FIG 5 shows a flowchart of a method for a central processing node according to one embodiment of the present disclosure, the method comprising: obtaining a channel between adjacent respective ends of each network controls the network control terminal is a user equipment and services service requirement information (S22) channel characteristic information and the user equipment, wherein each of the network control terminal adopts joint precoding for downlink data transmission; demand information service channel wherein the channel information and the user equipment, to determine respective network control terminal number of transmit antennas to be used (S23).
[0107]
A dashed box shown in Figure 5, the above-described method may further include Step S21: receiving channel characteristic information, and service demand information of each user equipment from the network control terminal. Another dashed box shown in Figure 5, the above-described method may further include Step S24: transmission antenna number information transmitted to each of the determined network control terminal of the control terminal of the network to be used.
[0108]
As can be seen, the method different from the method shown in FIG. 4 in that the information acquisition step with the number of transmitting antennas is determined at a central processing node, the processing itself is executed in FIG. 4 are similar, and therefore here description of the various steps are not repeated.
[0109]
Note that, each of the above methods may be used singly or in combination, the details of the first and second embodiments have been described in detail and will not be repeated.
[0110]
For ease of understanding, with reference to the following exemplary information flow between the network between the control terminal and the control terminal and the network user equipment described in FIG. 6, FIG. 7 and described with reference to a control terminal between the network and the network with the central processing node and a control terminal user An exemplary flow of information between devices. It should be understood that the information flow is only for purposes of illustration, and not restrictive.
[0111]
The network control terminal in FIG. 6 may include the previously described electronic device 100 can be realized, or at least part of the functions. For convenience of description, FIG. 6 shows the case where two neighboring network as an example of the control terminal, wherein the control terminal determines the network to perform a number of transmit antennas is described as an example.
[0112]
Channel between the service needs of the user equipment First, a user device requests information and a pilot sequence to the network control terminal 1 transmits a service, the network control terminal 1 acquires the network control terminal of a service based on the information and a network control terminal of a respective user equipment channel characteristic information. Inter-channel feature information of a channel between Note that when obtaining the channel characteristic information, the network control terminal 1 not only obtain the network control terminal 1 and it serves the user equipment is also obtained a network control terminal 1 and the network control terminal 2 served user equipment channel characteristic information channel. In other words, the user equipment shown in FIG. 6 represents all user equipments and a network control terminal the control terminal of the network 2 and services. In the case where the channel characteristic information to the large-scale fading coefficients, the channel characteristic may be represented, for example, channel information in accordance with the previously described beta] 1k1 and beta] 2K1 .
[0113]
Meanwhile, similarly, the user equipment also control terminal 2 transmits a service to the network a request message and a pilot sequence, the network control terminal 2 to get service request network control terminal 2 served user equipment and a network control terminal 2 and the respective user according to the information channel characteristic information of a channel between devices. In the case where the channel characteristic information to the large-scale fading coefficients, the channel characteristic may be represented, for example, channel information according to the previously described beta] 2K2 and beta] 1K2 . The network control terminal 2 transmits a control terminal to the network service requirements and channel characteristic information, and wherein the network control channel terminal 1 will follow the desired joint precoding information is sent to the network control terminal 2.
[0114]
Then, the network terminal 1 based on the control channel characteristic information and service requirements to determine, for example, obtained by the number of network control terminal 1 and transmitting antenna 2 to be used by performing the previously described embodiment DOTAN strategies.
[0115]
Next, the network control terminal a network control terminal 2 transmits information to be used the number of transmit antennas to the network control terminal 2. Then, the network control terminal 1 and the network control terminal 2 using a corresponding number of transmit antennas, using jointly precoded downlink data transmission.
[0116]
It should be appreciated that, if the number of transmit antennas to determine the control terminal 2 by the network, the information flow is similar.
[0117]
The network control terminal of FIG. 7 may include the previously described electronic device 200 can be realized, or at least part of the functions. For convenience of description, in FIG. 7 shows the case where two adjacent control the network as an example.
[0118]
In FIG. 7, similarly to FIG. 6, the control terminal of the user equipment 1 sends a service request message and a pilot sequence to the network, the network control terminal 1 obtains its service needs of the user equipment and information according to the channel characteristic information. Meanwhile, the user equipment control terminal 2 also transmits a service request message and a pilot sequence to the network, the network control terminal 2 according to the information which the user equipment information obtaining service requirements and channel characteristics.
[0119]
1 and the network control terminal 2 and the service needs channel characteristic information to the central processing node. Because of the need for other network control terminal of the channel feature information subsequent joint precoding, so the central processing node may be a network control channel characteristic information terminal 1 to the network control terminal 2 and the network control channel characteristic information terminal 2 to the a network control terminal. This process is optional, may also be implemented, for example, the channel characteristic information transmitted by the direct information exchange between the control terminal of the network.
[0120]
Subsequently, the central processing node, for example, to determine the number of transmit antennas to be used for each network control terminal by performing DOTAN policy according to the information service needs a channel characteristic information obtained by the network and the respective control terminal. Subsequently, the central processing node 1 and the network control terminal, respectively, the control terminal 2 transmits information about its number of transmit antennas to use the network. Then, the network control terminal 1 and the network control terminal 2 using a corresponding number of transmit antennas, using jointly precoded downlink data transmission.
[0121]
In summary, the joint can be determined number of transmit antennas to be used for each network control terminal based on the channel characteristic information and service requirements of the user equipment according to an electronic apparatus and method of the present application, so as to obtain at least one of the following advantages: optimizing transmissions selected number of antennas to improve system efficiency, demand for services of the user equipment. Further, the number of transmit antennas determines simple processing, calculation load is small, the processing speed is fast, easy to implement.
[0122]

[0123]
The techniques of this disclosure can be applied to various products. For example, the electronic device 200 may be implemented as any type of server, such as a tower servers, blade servers and rack servers. The electronic device 200 may be a control module mounted on the server (such as a wafer, comprising a single integrated circuit module, and a card slot or blade is inserted into the blade server (blade)).
[0124]
For example, the network control terminal may be a base station, which may be implemented as any type of evolved Node B (eNB), such as a macro eNB, and a small eNB. Small eNB may cover less than a macro cell eNB cell, such as a pico eNB, the eNB and the micro family (femto) eNB. Alternatively, the base station may be implemented as any other type of base station, such as base transceiver stations and NodeB (BTS). The base station may include: a body configured to control wireless communication (also referred to as base station apparatus); and one or more remote radio heads disposed at different places of the main body (RRH). Further, various types of terminals can also be temporarily or semi-persistent perform the base station functions as a work station.
[0125]
[I. Application Example on server]
[0126]
FIG 8 is a block diagram illustrating an example of a server technology may be applied to the present disclosure schematic configuration 700. Server 700 includes a processor 701, memory 702, storage device 703, a network interface 704 and a bus 706.
[0127]
The processor 701 may, for example, a central processing unit (CPU) or digital signal processor (DSP), and a control function server 700. The memory 702 includes random access memory (RAM) and read only memory (ROM), and stores data and programs executed by the processor 701. Memory device 703 may include a storage medium, such as a semiconductor memory and a hard disk.
[0128]
The network interface 704 for connecting server 700 to a wired communication network 705 is a wired communication interface. 705 may be a wired communication network such as the Evolved Packet Core (EPC) of a core network such as the Internet or a packet data network (PDN).
[0129]
706 processor bus 701, memory 702, storage device 703 and a network interface 704 connected to each other. Bus 706 may include a respective two or more busses (such as high-speed bus and low-speed bus) having different speeds.
[0130]
In the server 700 shown in FIG. 8, the information described in FIG. 3 acquisition unit 201 and determination unit 202 may be implemented by the processor 701. For example, the processor 701 may be implemented by a number of transmit antennas determines the respective control terminal of the network to be used perform the function information acquisition unit 201 and the determination unit 202.
[0131]
[II. Application Examples of the base station on]
[0132]
(First Application Example)
[0133]
FIG 9 is a block diagram of a first example of a schematic configuration of an eNB may be applied is shown in the art of the present disclosure. eNB 800 includes one or more antennas 810 and a base station apparatus 820. The base station apparatus 820, and each antenna 810 may be connected to each other via a RF cable.
[0134]
Each antenna 810 includes a single or a plurality of antenna elements (such as including a multiple input multiple output (MIMO) antennas in a plurality of antenna elements), and for the base station apparatus 820 transmit and receive wireless signals. As shown in FIG. 9, eNB 800 may comprise a plurality of antennas 810. For example, a plurality of the plurality of antennas 810 may be used in a frequency band compatible with the eNB 800. While Figure 9 shows an example in which the eNB 800 includes a plurality of antennas 810, the eNB 800 may also comprise a single antenna 810.
[0135]
The base station apparatus 820 includes a controller 821, a memory 822, a network interface 823 and a wireless communication interface 825.
[0136]
The controller 821 may, for example, CPU or DSP, and operation of the various higher layer 820 of the base station apparatus. For example, the controller 821 generates a data packet according to the data signal by the wireless communication interface 825 in the process, and to transmit the generated packet via the network interface 823. The controller 821 may be tied to the data from the baseband processor to generate a plurality of packet bundle, bundling and transmitting the generated packet. The controller 821 may have a function to execute control logic: the control such as a radio resource control, radio bearer control, mobility management, admission control and scheduling. This control may be incorporated close to the core network node or the eNB performed. Memory 822 includes RAM and ROM, and various types of control programs and data (such as terminal list, the transmission power data and schedule data) executed by the controller 821.
[0137]
The network interface 823 for base station apparatus 820 is connected to a core network communications interface 824. The controller 821 may communicate with the core network node or another eNB via the network interface 823. In this case, eNB 800 and eNB or other core network node may be connected to each other through the logical interface (such as the S1 interface and the X2 interface). The network interface 823 may also be a wired communication interface or a wireless communication interface for the wireless backhaul. If the network interface 823 is a wireless communication interface, compared with the frequency band used by the wireless communication interface 825, network interface 823 can use a higher frequency band for radio communication.
[0138]
The wireless communication interface 825 supports any cellular communication scheme (such as Long Term Evolution (LTE) and LTE- Advanced), via the antenna 810 and provided to a terminal located in the cell eNB 800 of the wireless connection. The wireless communication interface 825 may generally include a processor 826 and an RF circuit such as a baseband (BB) 827. BB processor 826 may perform, for example, encoding / decoding, modulation / demodulation, and a multiplexing / demultiplexing, and performs layer (e.g. L1, medium access control (the MAC), Radio Link Control (RLC) and packet data convergence protocol ( the PDCP)) in various types of signal processing. Instead of the controller 821, BB processor 826 may have a part or all of the logic functions. BB processor 826 may be a memory storing a communication control program, or a module configured to execute a program comprising a processor and associated circuitry. Update to the functional changes in BB processor 826. The module may be inserted into the slot of the base station apparatus 820 or card insert. Alternatively, the module may be a chip on a card or blade is mounted. Meanwhile, RF circuitry 827 may comprise, for example, mixers, filters and amplifiers, and to transmit and receive wireless signals via the antenna 810.
[0139]
9, a wireless communication interface 825 may include a plurality of processors 826 BB. For example, the BB processor 826 may be compatible with a plurality of the eNB 800 uses a plurality of frequency bands. 9, a wireless communication interface 825 may include a plurality of RF circuits 827. For example, a plurality of RF circuitry 827 may be compatible with a plurality of antenna elements. While Figure 9 illustrates a wireless communication interface 825 which includes a plurality of BB processor 826 and a plurality of exemplary circuit 827 of RF, the wireless communication interface 825 may also include a single BB processor 826 or a single RF circuit 827.
[0140]
The eNB illustrated in FIG 9800, with reference to FIG. 1 described transceiving unit 103 may be implemented by a wireless communication interface 825. At least part of the function may be implemented by the controller 821. For example, the controller 821 may acquire information by performing unit 101, determination unit 102 performs the function of the number of transmit antennas determines the respective control terminal of the network to be used.
[0141]
(Second Application Example)
[0142]
FIG 10 is a block diagram of the second example of a schematic configuration of the eNB art shows the present disclosure may be applied. eNB 830 includes one or more antennas 840, the base station apparatus 850 and RRH860. Each RRH 860 and antenna 840 may be connected to each other via an RF cable. RRH 860 and base station apparatus 850 may be connected to each other via high-speed line such as a fiber optic cable.
[0143]
Each antenna 840 includes a single or a plurality of antenna elements (such as including a plurality of antennas in MIMO antenna elements) and for RRH 860 transmit and receive wireless signals. Illustrated, eNB 830 in FIG. 10 may include multiple antennas 840. For example, a plurality of antennas 840 may be compatible with a plurality of frequency bands used by eNB 830. Although FIG. 10 shows an example in which eNB 830 comprises a plurality of antennas 840 examples, the eNB 830 may also comprise a single antenna 840.
[0144]
The base station apparatus 850 includes a controller 851, a memory 852, a network interface 853, a wireless communication interface 855 and the connection interface 857. Controller 851, the controller 821 is described a network interface 852 and memory 853 described with reference to FIG. 10, the same memory 822 and a network interface 823.
[0145]
The wireless communication interface 855 supports any cellular communication scheme (such as LTE and LTE- Advanced), and provided to the wireless communication terminal and the RRH 860 positioned corresponding to the sector via the RRH 860 and the antenna 840. The wireless communication interface 855 may generally include a processor 856, for example, BB. In addition to the BB processor 856 is connected to the RRH RF circuitry 864,860 is connected via an interface 857, the same processor BB BB processor 856 described with reference to Fig 10,826. 10, wireless communication interface 855 may include a plurality of processors 856 BB. For example, the processor 856 may be compatible with a plurality of BB eNB 830 using a plurality of frequency bands. Although FIG. 10 shows a state where a wireless communication interface 855 includes a plurality of exemplary BB processor 856, the wireless communication interface 855 may include a single processor 856 BB.
[0146]
Interface 857 is an interface for connecting the base station apparatus 850 (wireless communication interface 855) connected to the RRH 860. Interface 857 may also be connected to the base station apparatus 850 (wireless communication interface 855) connected to the high-speed line RRH 860 in the communication module.
[0147]
RRH 860 comprises a connection interface 861 and a wireless communication interface 863.
[0148]
An interface 861 for connecting the RRH 860 (wireless communication interface 863) connected to the base station apparatus 850 interface. Interface 861 may also be connected to the high-speed lines in the communication module.
[0149]
The wireless communication interface 863 to transmit and receive wireless signals via the antenna 840. The wireless communication interface 863 may generally comprise, for example, RF circuit 864. RF circuit 864 may comprise, for example, mixers, filters and amplifiers, and to transmit and receive wireless signals via the antenna 840. 10, wireless communication interface 863 may include a plurality of RF circuits 864. For example, a plurality of RF circuitry 864 may support a plurality of antenna elements. Although FIG. 10 shows a state where a wireless communication interface 863 includes a plurality of exemplary RF circuits 864, the wireless communication interface 863 may comprise a single RF circuit 864.
[0150]
In the eNB 830 illustrated in FIG. 10, a transceiving unit 103 may be described with reference to FIG implemented by a wireless communication interface 855 and / or wireless communication interface 863. At least part of functions may also be realized the controller 851. For example, the controller 851 may perform information acquisition unit 101, determination unit 102 performs the function of the number of transmit antennas determines the respective control terminal of the network to be used.
[0151]
It should be understood that the above application example is not limiting, exemplary only given for ease of understanding.
[0152]
Above with reference to specific embodiments describe the basic principles of the invention, however, to be noted that, to those skilled in the art can understand that all or any of the steps or components of the method and apparatus of the present invention may be any computing device ( It includes a processor, a storage medium etc.) or a network computing device, hardware, firmware, software, or a combination thereof to achieve, as one skilled in the art using the basic circuit design in the case of reading the description of the present invention basic programming skills or knowledge will be able to achieve.
[0153]
Further, the present invention further provides a storing instruction codes are machine readable program product. When the instruction code read and executed by a machine, perform the method according to embodiments of the present invention as described above.
[0154]
Accordingly, program product, for bearing the instruction codes are stored in a machine-readable storage medium is also included in the present invention is disclosed. The storage medium includes, but not limited to, floppy diskettes, optical disks, magneto-optical disk, memory card, memory stick and the like.

Claims

[Claim 1]A method for controlling a network of electronic apparatus terminal, comprising: a processing circuit configured to: obtain a network control terminal and one or more channels between the user equipment and the network control terminal the control terminal of the network served by the respective adjacent demand information service channel characteristic information of user equipment, and a control terminal of the respective networks and services, wherein the network control terminal and a control terminal using the neighboring network jointly precoded downlink data transmission; and based on the requirements of the service and the information wherein said channel information, to determine the network control terminal and the control terminal of the network number of transmitting antennas to be used adjacent.
[Claim 2]
The channel feature information of an electronic apparatus according to claim 1, wherein the adjacent channel between the user equipment and the network control terminal the control terminal of each of the network and services, and the network control end user served by the neighboring demand for services obtained by the device information exchange between the network control side.
[Claim 3]
The electronic apparatus according to claim 1, wherein the processing circuitry is configured to: information based on user service requirements of a particular user equipment device a control terminal of each of the network served by the channel characteristics, and, on each network control terminal the minimum number of transmit antennas; and a joint optimization of the number of transmission antennas of each control terminal to be used in the network according to the minimum number of transmit antennas.
[Claim 4]
The electronic apparatus according to claim 3, wherein the processing circuitry is configured to maximize the overall energy efficiency of the communication system according to the optimization target, the communication system comprises a user equipment and a network control terminal and it serves the neighboring user equipment and the network control terminal serves.
[Claim 5]
Overall energy efficiency of the electronic apparatus according to claim 3, wherein the processing circuitry is configured to maximize the user equipment served by the respective control terminal of the network to the optimization target.
[Claim 6]
The electronic apparatus according to claim 3, wherein the processing circuitry is configured to control the overall energy efficiency of the respective ends of the network is maximized optimization target.
[Claim 7]
The electronic apparatus according to claim 3, wherein the processing circuitry is configured to transmit the number of antennas at the fixed end of the other network control, the number of transmit antennas sequentially for each network control terminal to be used for optimization.
[Claim 8]
The electronic apparatus according to claim 1, wherein the channel feature information comprises one or more of the following: large-scale fading coefficient, small-scale fading coefficient, the signal angle of arrival, time and channel correlation.
[Claim 9]
The electronic apparatus according to claim 1, wherein the service requirement of the user for the user equipment device data transfer rate requirements.
[Claim 10]
The electronic apparatus according to claim 3, wherein the user equipment corresponding network specific user equipment is served by the control terminal of the highest priority user equipment.
[Claim 11]
The electronic apparatus according to claim 3, wherein the channel feature information for the large-scale fading coefficients, the minimum number of transmit antennas to resolve the service request and the function of large-scale fading coefficients.
[Claim 12]
The electronic apparatus according to claim 1, further comprising: a transceiver configured to receive a service demand information from the channel characteristic information and the control terminal of the network the user equipment is adjacent.
[Claim 13]
The electronic device as claimed in claim 12, wherein the transceiver is configured to receive the information through signaling interaction network between the control terminal.
[Claim 14]
The electronic device as claimed in claim 12, wherein the transceiver is further configured to control the neighboring network sends the determined number of transmit antennas of the network control information to be used adjacent to an end.
[Claim 15]
An electronic device for a central processing node, comprising: a processing circuit configured to: obtain channel information of a channel characteristic between a user equipment adjacent to each respective network terminal and the control terminal of the network control the services and the user demand information service device, wherein the control terminal of each network employed jointly precoded downlink data transmission; and the demand for information services based on the channel feature information and the user equipment, determining a transmit respective control terminal of the network to be used the number of antennas.
[Claim 16]
The electronic apparatus according to claim 15, wherein the processing circuitry is configured to: information based on user service requirements of a particular user equipment device a control terminal of each of the network served by the channel characteristics, and, on each network control terminal the minimum number of transmit antennas; and according to the minimum number of transmit antennas, the number of transmit antennas to be used for each network control terminal of the joint optimization.
[Claim 17]
The electronic apparatus according to claim 16, wherein the processing circuitry is configured to maximize the overall energy efficiency of the communication system according to the optimization target, the communication system comprises a user equipment terminal and its respective network control services.
[Claim 18]
The overall energy efficiency of the electronic apparatus according to claim 16, wherein the processing circuitry is configured to maximize the user equipment served by the respective control terminal of the network to the optimization target.
[Claim 19]
The electronic apparatus according to claim 16, wherein the processing circuitry is configured to control the overall energy efficiency of the respective ends of the network is maximized optimization target.
[Claim 20]
The electronic apparatus according to claim 16, wherein the processing circuitry is configured to transmit the number of antennas at the fixed end of the other network control, the number of transmit antennas sequentially for each network control terminal to be used for optimization.
[Claim 21]
The electronic apparatus according to claim 15, wherein the channel characteristics information of one or more of the following: large-scale fading coefficient, small-scale fading coefficient, the signal angle of arrival, time and channel correlation.
[Claim 22]
The electronic apparatus according to claim 15, wherein the service requirement of the user for the user equipment device data transfer rate requirements.
[Claim 23]
The electronic apparatus according to claim 16, wherein the user equipment specific user equipment to the corresponding network control terminal served by the highest priority of the user equipment.
[Claim 24]
The electronic apparatus according to claim 15, further comprising: a transceiver configured to receive a demand for services from the network control terminal of the respective channel characteristic information and user information of the device.
[Claim 25]
The electronic apparatus according to claim 24, wherein the transceiver is further configured to transmit a number of transmit antennas to use its information to the control terminal of each network.
[Claim 26]
A method for controlling the network terminal, comprising: obtaining a channel feature information of a channel between a user equipment and a network control terminal of one or more neighboring network control terminal and the control terminal of the respective network and each network service control terminal user information service requirements for equipment and services, wherein said network control terminal and a control terminal using the neighboring network joint precoding for downlink data transmission; and demand information and the information based on the channel characteristic of the service, to determine the said network control terminal and the control terminal of the network number of transmitting antennas to be used adjacent.
[Claim 27]
A method for a central processing node, comprising: obtaining channel characteristic information service requirements of the user equipment information channel between the user equipment adjacent to each respective network terminal and the control terminal of the service control network, wherein the each network control terminal employed jointly precoded downlink data transmission; and the information required service information, and the user equipment based on the channel characteristics, to determine the number of transmit antennas of each control terminal to use the network.