Description

Title: communication control method of base stations, mobile device, wireless communication system, base station device and communication control method of mobile station equipment
Technology areas

[0001]
Invention is base station apparatus, communication control method of mobile station apparatus, radio communication system, base station apparatus and communication control method of mobile station equipment.
His innovations.

[0002]
Known direct communication, D2D (Device to Device) without going through the base stations of cellular communication in the normal communication in recent years, through the base station, and wireless communication mobile station, a direct wireless communication mobile station communication. D2D communication with the mobile stations that use cellular communications to serve as the CUE (the Cellular User Equipment) and to function as a DUE (D2D User Equipment).
[0003]
And by assigning wireless resources CUE DUE to base station (eNB:eNodeB) as a system model of the future, ensure that the CUE and DUE to.
Prior art documents

Patent documents

[0004]
Patent literature 1: United States patent application publication No. 2009 / No. 0325625 specification
Non-patent literature

[0005]
Non-patent literature 1: "Dynamic Power Control Mechanism for Interference Coordination of Device-to-Device Communication in Cellular Networks", Sungkyunkwan University, IEEE Ubiquitous and Future Networks (ICUFN), 2011 Third International Conference, 15-17 June 2011.
Summary of the invention

Inventors are trying to solve a problem

[0006]
However, for example, if the shared radio resource of the same CUE and DUE by D2D UL (Link Up) from the CUE signal is interfering is expected. In other words, signal interference to D2D communication cellular communications at large.
[0007]
Intended to provide can reduce signal interference to D2D communication cellular communications on the one side, base station apparatus, mobile station apparatus and wireless communication system, etc.
Means for resolving problems

[0008]
One of base station equipment has a control unit. Control unit based on information indicating the radio State's no. 1 telecommunications base stations through a wireless communication between the mobile device and no. 2 telecommunications said mobile devices with each other without using the base station device that directly performs wireless communication mobile station equipment, to control the above no. 2 telecommunications said mobile station apparatus for carrying out said no. 2 communications for control information.
Advantageous effects of invention

[0009]
In one aspect, can reduce signal interference to communications No. 2 No. 1 communications.
A brief description of the drawings

[0010]
[Figure 1] figure 1 in Figure 1 example of example 1 radio system.
[Figure 2] figure 2 is a block diagram showing example 1 eNB 1 example.
[Fig. 3] Figure 3 is a block diagram showing example 1 UE 1 example.
[Fig. 4] Figure 4 in Figure 1 examples of DCI format to add the control flag for example 1.
[Figure 5] Figure 5 is 1 example of behavior for a DUE related to example 1 communication control process flowchart.
[Fig. 6] Figure 6 shows in the block diagram showing example 1 example 2 eNB.
[Fig. 7] Figure 7 in block diagram 1 example of position determination.
[Fig. 8] Figure 8 in Figure 1 illustrates adding a control flag for example 3-only format.
[Figure 9] Figure 9 is a diagram illustrating the DCI format to add the control flag for example 4 1 example.
[10] figure 10 in description fig. 1 example of adding a control flag for example 5 DCI format.
[Figure 11] figure 11 is 1 example of behavior for a DUE related to example 6 communication control process flowchart.
[Fig. 12] figure 12 is 1 example of behavior for a DUE involved in examples 7 communication control process flowchart.
For carrying out the invention

[0011]
Embodiment disclosed in accordance with drawing the long-cherished desire of base stations, mobile device, wireless communication system, base station equipment communication control method and communication control method of mobile station equipment, explain in detail. It is not, according to each example, limited disclosure techniques. Also, each example shown below are within a compatible combination of even better.
Example 1
[0012]
Figure 1 is the figure 1 example of example 1 radio system. Wireless System 1 shown in Figure 1, with eNB2 and multiple UE (User Equipment) 3. UE3 is no. 1 communications such as cellular or switch to the No. 2 telecommunications telecommunication D2D have the ability to execute. D2D communication with and if UE3 is used in cellular communication acts as a CUE3A to act as DUE3B. Shall be to coexist under one wireless system, CUE3A and DUE3B are available.
[0013]
Figure 2 is a block diagram showing example of example 1 eNB2 1. Figure 2 eNB2 antenna 11 and RF (Radio Frequency) circuit 12 & 13 memory and processor 14 and having. Antenna 11 sending and receiving cellular communications or D2D communications wireless signal. RF circuits 12 in circuits employ various types of signal processing for radio signals to send and receive antenna 11. Memory 13, with space for storing various types of information. Controlling the entire eNB2 processor 14.
[0014]
RF circuits 12 have switching, 21, received 22, and submission of 23. Switching of 21 should switch switch between antenna 11 and received 22 and sent, 23. Received 22 is to receive cellular communications or D2D communications wireless signal communications interface. Submission of 23 is that transmits wireless cellular communications or the D2D communication interfaces. 13 memory storing its wireless resources related to cellular communications or D2D communication using frequency, for example, remembers the assignment information to manage wireless resources, etc. using the frequency assigned to UE3.
[0015]
Processor 14 have estimates of 31 and data signal decoding No. 32, control signal decoding No. 33 and quality calculation of 34 and Scheduler 35. In addition to processor 14 has a data signal generation, 36 and control signal generation of 37, RS production, 38, data signal coding, 39, control signal coding, 40, allocation of 41.
[0016]
Estimation of 31 based on the received signals in RS (Reference Signal) signal, to estimate the channel estimate of received signal from channel to channel. Data signal decoding No. 32 is based on the channel value, to be decrypted to demodulate the data signal from the received signal. Control signal decoding of the No. 33 on channel estimate to decrypt the picking up signals, e.g. DCI (Downlink Control Information) format from the received signal. In addition, DCI format, DL (Link Down) control commands.
[0017]
Quality calculation, 34, from channel estimate calculates the received quality. Scheduler 35 produces cellular and D2D communications to use radio resources to assign to the UE3 to accommodate the quality estimation of receiving quality, data signal decoding issue 32 decoded codeword, control signal decoding No. 33 based on the decoded codeword assignment information. And Scheduler 35 remembers the assignment information generated in memory 13.
[0018]
Data signal generation of 36 that generate data signals on demand. On decoding results and receive quality decoding of the data signal and control signal control signal generation, 37, to generate the control signals. Also control signal generation, 37 to edit the contents of the control signal upon request. RS formation, 38, to generate RS signals on demand. Encoded data signals generated in the data signal generation of 36 data signal coding, 39, and modulation. Encoding generates control signal control signal coding, 40, and modulation. Allocation of 41 based on allocation information, data, control and RS signals allocate radio resources. Also, control signal generation, 37, put on the assignment information generated by the Scheduler 35 DCI format, DCI format to send to UE3.
[0019]
To determine whether or not the Scheduler 35 that share the radio resource control for DUE3B CUE3A the same. Scheduler 35 that share the radio resource control for DUE3B the same as cue3y, control DUE3B control flags to set on. Scheduler 35 is not shared radio resource control for DUE3B the same as CUE3A, control DUE3B control flag to set off. Control signal generation of 37 produces, for example, contains the grant UL UL grant every DCI format. In addition, UL grant, for example, when granting the D2D communication communication signals in. And control signal generation of 37, DCI format, and attached control de3b control flag, sending UE3 UL grant submission of 23-DCI format plus a control flag.
[0020]
Figure 3 is a block diagram 1 of UE3. UE3 shown in Figure 3, has antenna 51 and RF Circuit 52 and 53 memory and processor 54. Antenna 51, sending and receiving cellular communications or D2D communications wireless signal. RF Circuit 52 should employ various types of signal processing for wireless signal circuit. 53 memory is to store various types of information such as assignment information from the eNB2 area. Controlling the entire UE3 processor 54.
[0021]
RF Circuit 52 has a switching of 61 and receives section 62 and 63, and. Switching of 61 is among 51 antenna and receiver, 62 and 63 of the switches. Receives section 62 is to receive cellular communications or D2D communications wireless signal communications interface. Part 63 is that transmits wireless cellular communications or the D2D communication interfaces.
[0022]
Processor 54 has estimate of 71 and data signal decoding No. 72, control signal decoding issue of 73 and quality calculation of 74 and data signal generation, 75, control signal generation, 76, RS formation of 77. In addition to processor 54 has a data signal coding, 78 and the control signal coding, 79, allocation of 80, communication control of 81. Estimation of 71 is based on RS signals inserted in the incoming signal, to estimate the channel estimate. Data signal decoding issue 72, based on channel estimation value to demodulate the data signal from the received signal, to be decrypted. Picking up from the received signal control signal control signal decoding issue, 73, to be decrypted.
[0023]
Quality estimation of 74, calculated from the channel estimate receiving quality. Data signal generation of 75 produces data on demand. On decoding results and receive quality decoding of the data signal and control signal control signal generation, 76, to generate the control signals. RS formation of 77 produces RS signals. Data signal coding, 78, encoded data signals and modulates the. Encoding control signal control signal coding, 79, and modulation. Allocation of 80 is based on assignment information from eNB2, data, control and RS signals to allocate radio resources for, data, control and RS signals transmission, 63.
[0024]
Communication control of 81, decryption of 73 in the control signal control signal from the eNB2 decrypts, to determine whether or not you yourself added DCI format of control signals to control flags are set to ON. Communication control of 81 controlling transmission power of 63 If ON the control flags.
[0025]
Communications control, 81, of D2D communication OL-TPC (1) using the D2D communications transmitting power of PD as a provisional amount of power (3 GPP TS36. 213 v12. 1. 0 references).
[0026]
[1]

[0027]
In addition to communication control of 81 computes to evaluate PLc and eNB2. In addition, inter-cell PLc is calculated by subtracting from the transmitting power of the RS signal multiplied by the upper layer filter RSRP (Reference Signal Received Power). Amount of RS signal transmission power is in eNB2 that notifies UE3 in the top layer. Communication control of 81 (Pd-PLc) in calculating the eNB2 side DUE3B receive power estimate. To determine whether or not further the communications control, 81, Th below the threshold is estimated received power quantity (Pd-PLc). The threshold Th is equivalent to the amount of between eNB2 and UE3 and CUE3A UL signal signal interference does not send power, calculated in advance, and anything.
[0028]
Need to reduce transmission power of Pd Th below threshold, calculated by estimated received power quantity (Pd-PLc) communication control of 81 is not controlling the transmission power of 63, D2D communications transmitting power to set Pd. Also, if communications control, 81, estimated received power quantity (Pd-PLc) Th below the threshold is not D2D communications transmitting power threshold th, to put controlling the transmission power of 63. If communications control section 81 does not control flag is ON, the D2D communications transmitting power to Pd, to put controlling the transmission power of 63.
[0029]
Figure 4 is the figure 1 example of DCI format to add the control flag. In addition, DCI format, for example, DCI format "0" is. 90 the DCI format shown in Figure 4 is the Carrier Indicator (0 or a 3-bit) 91, Flag for format0/format1A differentiation (1-bit) with 93 92, Frequency hopping flag (1-bit). DCI format 90's 94, Modulation and coding scheme and redundancy version Resource block assignment and hopping resource allocation (up to 12 bits) (5-bit) with 96 95, New data indicator (1-bit). In addition to DCI format 90's 97, Cyclic shift for DM RS and OCC index TPC command for scheduled PUSCH (2 bits) (bit 3) 98, 99, Downlink Assignment Index (DAI) (2 bits) with 100 UL index (2 bits). In addition to DCI format 90's CSI requests (or is 2 bits) with 102 101 and Resource allocation type (1-bit). Control signal generation of 76 produces 90 DCI format, adding a control flag 103 number of controlled UE3 to DCI format 90.
[0030]
Then explain about the behavior of the wireless system of example 1. If you have shared radio resource control DUE3B the same as CUE3A, and then determine whether or not sharing the radio resource control for DUE3B the same CUE3A and eNB2 Scheduler 35 control DUE3B control flags to set on. Also, if the Scheduler 35 is not shared radio resource control for DUE3B the same CUE3A and control DUE3B control flag to set off. And control signal generation of 76 for example, adding a control DUE3B control flag and generates storing said UL grant allowing D2D UL grant every DCI format, DCI format. And submission of 23, sending controlled DUE3B DCI format plus a control flag.
[0031]
Figure 5 is a flow chart that demonstrates the behavior of the DUE3B involved in the communication process of example 1 1. Communication control process as shown in Figure 5 is DUE3B side D2D communication transmit power control based on the control flags to their processing.
[0032]
Computes D2D communications transmitting power of Pd DUE3B communication control of 81, in Figure 5 (step S11) and to determine whether the control flag 103 yourself attached to DCI format 90 received ON (step S12). Communications control, 81, 103 yourself control flag on (step S12 positive), and eNB2 evaluate PLc to calculate if (step S13).
[0033]
To determine whether a communication control of 81, the Th below the threshold minus the inter-cell PLc from D2D communications transmitting power of Pd-eNB2 side receive power estimate (Pd-PLc) (step S14). Communication control of 81, estimated received power quantity (Pd-PLc) below the threshold Th if (positive step S14), D2D communications transmitting power PD, to put to finish processing works to 63 in the transmission of transmit power control and run the D2D communications (step S15), shown in Figure 5.
[0034]
Communication control of 81 is not expected incoming electricity (Pd-PLc) Th below threshold (step S14 negation), signal interference from D2D communications is to judge. And communication control of 81 terminate behavior controlling transmission power in the submission of 63 D2D communications transmitting power to the set threshold Th and run the D2D communications (step S16), shown in Figure 5.
[0035]
Determines if the communications control, 81, 103 yourself control flag is not ON (step S12 negation), signal interference due to D2D communication No. And communication control of 81 terminate behavior controlling transmission power in the submission of 63 D2D communications transmitting power, set in Pd and then run the D2D communications (step S17), shown in Figure 5. In other words, DUE3B, enable D2D communication by executing the TPC (Transmission Power Control) in between the opposing DUE3B.
[0036]
DUE3B that performs communication control shown in Figure 5, the control flag 103 ON and receive power estimate (Pd-PLc) Th below threshold, send power consumption PD, to put controlling the transmission power of 63. As a result, the UL signal to the CUE3A D2D communication signal interference is reduced.
[0037]
If the DUE3B control flag 103 ON and receive power estimate (Pd-PLc) Th below the threshold is not sending power to set threshold th, controlling the transmission power of 63. As a result, the UL signal to the CUE3A D2D communication signal interference is reduced.
[0038]
DUE3B the control flag 103 When OFF, transmit power consumption PD, to put controlling the transmission power of 63.
[0039]
Example 1 eNB2 that share the radio resource control for DUE3B the same as CUE3A, control DUE3B control flag 103 to set on. Also, if eNB2 is not shared radio resource control for DUE3B the same CUE3A and control DUE3B control flag 103 sets off. eNB2 is appended to the control DUE3B the number minutes control flag 103 DCI format 90, notifies the control DUE3B. As a result, DUE3B is controlling the D2D communication transmission power ON if the control flag 103 yourself, can reduce signal interference to D2D communication cellular communications.
[0040]
In addition to DUE3B, control flags 103 ON and receive power estimate (Pd-PLc) Th below the threshold for the D2D communications transmitting power PD, to put controlling the transmission power of 63. As a result, can reduce signal interference of D2D communications CUE3A UL.
[0041]
If the DUE3B control flag 103 ON and receive power estimate (Pd-PLc) Th below the threshold is not D2D communications transmitting power to set threshold th, controlling the transmission power of 63. As a result, can reduce signal interference of D2D communications ce3a UL.
[0042]
You can increase the efficiency of radio resource can share the radio resources in example 1, CUE3A and DUE3B are the same.
[0043]
Compared to employing OL-TPC to perform the transmit power control based on the expected incoming energy considering if you are sharing the radio resources in example 1, which DUE3B the same CUE3A to evaluate PLc, can reduce the frequency of unwanted transmission power control. OL-TPC (Open Loop Transmission Power Control) is even there is no signal interference to the CUE3A environment at all times, transmit power control for the D2D communication throughput decreases.
[0044]
Without the needless loss of D2D communication transmit power, even if, in example 1, hour by hour change schedule of radio resources and can reduce signal interference due to D2D communication cellular communication depending on the situation.
[0045]
The above example 1 eNB2 and shared radio resource control for DUE3B the same as CUE3A and make sure whether the on/off control flag 103, whether or not that is bordered by eNB2 DUE3B-control flags 103 off even better. The embodiment of this case per described below as examples 2.
Example 2
[0046]
Figure 6 is a block diagram showing example 1 example 2 eNB2A. Same numerals on the same configuration example 1 radio system 1 the optional description of the duplicate configuration and operation. Differs from eNB2 shown eNB2A shown in Figure 6 and Figure 2 is added to the location decision of 42 points. To determine whether or not the location decision of 42 based on position of DUE3B and eNB2A, DUE3B are adjacent to the eNB2A. Scheduler 35 is in the location decision of 42 DUE3B adjacent to the eNB2A to the DUE3B control flag 103 to set on.
[0047]
Figure 7 shows in description fig. 1 example of position determination of 42. Position determination of 42 has a location comparison, 42A and quality comparison of 42 B. D2D communications DUE3B information and eNB2A information and compare position comparison, 42A, determines the distance within a prescribed distance when the adjacent DUE3B and eNB2A. Determine if the quality comparison of 42 B, D2D communication such as for example, evaluate or RSRP (Reference Signal Received Power) receive quality and quality thresholds and compare the quality threshold is exceeded the quality of reception located between de3b and eNB2A.
[0048]
If the Scheduler 35 is in the location decision of 42 DUE3B next to the eNB2A, the DUE3B control flag 103 to set on. If the Scheduler 35 is not adjacent to the eNB2A DUE3B in the location decision, 42, 103 of the DUE3B control flag to set off. And control signal generation, 76, adding to the number of controlled DUE3B control flag 103 DCI format 90. And submission of 23, plus a control flag 103 DCI format 90 sending controlled DUE3B.
[0049]
DUE3B the control flag 103 ON and receive power estimate (Pd-PLc) Th below the threshold for the D2D communications transmitting power PD, to put controlling the transmission power of 63. As a result, the UL signal to the CUE3A D2D communication signal interference is reduced.
[0050]
If the DUE3B control flag 103 ON and receive power estimate (Pd-PLc) Th below the threshold is not D2D communications transmitting power to set threshold th, controlling the transmission power of 63. As a result, the UL signal to the CUE3A D2D communication signal interference is reduced.
[0051]
If example 2 eNB2A is bordered by eNB2A de3b, de3b not adjacent to eNB2A, and then set the control de3b control flag 103 on the control de3b control flag 103 sets off. eNB2A is appended to the control DUE3B the number minutes control flag 103 DCI format 90, notifies the control DUE3B. As a result, DUE3B is controlling the D2D communication transmission power ON if the control flag 103 yourself, can reduce signal interference to D2D communication cellular communications.
[0052]
In addition to DUE3B, control flags 103 ON and receive power estimate (Pd-PLc) Th below the threshold for the D2D communications transmitting power PD, to put controlling the transmission power of 63. As a result, can reduce signal interference to communications D2D CUE3A UL signal, even if DUE3B next to eNB2A.
[0053]
If the DUE3B control flag 103 ON and receive power estimate (Pd-PLc) Th below the threshold is not D2D communications transmitting power to set threshold th, controlling the transmission power of 63. As a result, can reduce signal interference to communications D2D CUE3A UL signal, even if DUE3B next to eNB2A.
[0054]
For example, you could point reduce the transmit power of D2D communication among DUE3B in CUE3A near the approach end to reach eNB2A UL signal reception level is lower, affected by D2D communications. So that reduces the D2D communication transmit power, even if it, in example 2, adjacent to eNB2A de3a can reduce signal interference of D2D communications ce3a UL.
[0055]
In addition, based on adjacent relation on whether or not in the above example 2 in the location decision of 42 controlled DUE3B next to the eNB2A, sets the control DUE3B control flag 103. Based on the shared presence of whether or not it is shared radio resource, however, adjacency to the above example 1, as well as control DUE3B the same CUE3A, and set the control DUE3B control flag 103.
[0056]
The above examples 1 and 2, added 103 of UE controlled control flag DCI format 90. However, in D2D communication instead of the required control information, for example, New data indicator 96, assign the control flag 103 so well good. In addition, New data indicytor96, for example, would be unnecessary if you don't retransmit broadcast transmitting control information is.
[0057]
Also, in the above example 1 added DCI format 90 control flag 103 of UE controlled. That increases the number of control flags, however, increases the controlled UE number plus the DCI format. So yourself control flag can be identified on the DUE3B side-only formats placed per DUE3B-controlled control flag, using a special format in CRC (Cyclic Redundancy Check), then even better. So, per the embodiment of this case described below as example 3. Same numerals on the same configuration above example 1 radio system 1 the optional description of the duplicate configuration and operation.
Example 3
[0058]
Figure 8 in Figure 1 illustrates adding a control flag for example 3-only format. With a set so you can identify the bits set in DUE3B of the controlled control flag 111 and 111 yourself control flags are shown in Figure 8-only format 110 CRC112.
[0059]
Scheduler 35 sequentially set to control DUE3B control flag 111 to 110 in a special format. Sets the CRC112 to allow identification-only format 110 in controlled DUE3B control flag 111 control signal generation, 37. CRC112, C-RNTI (Cell-Radio Network Temporary Identifier) assigned to each DUE3B scramble that grouped for the control flag 111 yourself becomes possible identification. To detect state changes in the control DUE3B control signal generation, 37, and in each case, control DUE3B control flag 111 to 110 in the private format dynamic sets. And submission of 23, 110-only format to send to each DUE3B of the controlled.
[0060]
Based on the private format 110 in CRC112 if DUE3B receives a special format 110 and get yourself control flag 111 from 110-only format. DUE3B the control flag 111 yourself ON and receive power estimate (Pd-PLc) Th below the threshold for the D2D communications transmitting electricity PD, to put controlling the transmission power of 63. As a result, can reduce signal interference of D2D communications CUE3A UL.
[0061]
If you de3b yourself the control flag is ON and receive power estimate (Pd-PLc) Th below the threshold is not D2D communications transmitting electricity to set threshold th, controlling the transmission power of 63. As a result, can reduce signal interference of D2D communications CUE3A UL.
[0062]
Moreover, eNB2 is in a private format 110 control flag 111 dynamic controlled DUE3B sending to. As a result, compared to the UL grant every DCI format to send control flag in the static, can be sent to the control flag 111 each DUE3B controlled according to the schedule change.
[0063]
Also, set control flags in the Sub unit to assign to each DUE3B, rather than to set control flags 103 DUE3B every DCI format 90 added controlled DUE3B the number minutes control flag 103 in example 1 above, but also good. So embodiment of this if per example 4 as discussed below. Same numerals on the same configuration above example 1 radio system 1 the optional description of the duplicate configuration and operation.
Example 4
[0064]
Figure 9 is a diagram illustrating the DCI format to add the control flag for example 4 1 example. Append a sub unit control flag 103a DCI format 90 A shown in Figure 9. To determine whether or not sharing multiple UE3 assigned subframe in a controlled DUE3B one CUE3A the same wireless Resource Scheduler 35. Whenever the Scheduler 35 that share the radio resource control for DUE3B CUE3A the same sub unit control flag 103a to set on. Also, if the Scheduler 35 does not share the radio resources in multiple UE3 in the subframe, controlled DUE3B one CUE3A the same sub unit control flag 103a to set OFF.
[0065]
And control signal generation, 76, adding a sub unit control flag 103a DCI format 90a. Submission of 23 to send to each DUE3B of the controlled DCI format plus a control flag 103a 90a.
[0066]
Each DUE3B controlled the 103a-control flag is ON and receive power estimate (Pd-PLc) Th below the threshold for the D2D communications transmitting power to Pd, to put controlling the transmission power of 63. As a result, the UL signal to the CUE3A D2D communication signal interference is reduced.
[0067]
If each DUE3B controlled, 103a-control flag is ON, and the expected amount of received power (Pd-PLc) Th below the threshold is not D2D communications transmitting power to set threshold th, controlling the transmission power of 63. As a result, the UL signal to the CUE3A D2D communication signal interference is reduced.
[0068]
Can reduce the burden of handling control flag 103a DCI format 90a, compared to eNB2 example 4 is to establish control flag 103a in the Sub unit, set the control flag 103 in UE3. Because Moreover, 103a-control flag is 1-bit, DCI format 90a DCI format "3" and similar format configuration to DCI format detection on the DUE3B work is needed.
[0069]
In addition, in above example 4 added sub unit control flag 103a DCI format 90a. As mentioned earlier, however, in D2D communications sub unit control flag 103a to assign instead of the required control information, for example, New data indicator 96, even better.
[0070]
In the above example 4 in addition to DCI format 90 A sub unit control flag 103a also. Not, however, be limited to, the embodiment per example 5 as discussed below. Attached the same code in the above example 1 radio system 1 and the same configuration, omit the description of the duplicate configuration and operation.
Example 5
[0071]
Figure 10 shows in description fig. 1 example of adding a control flag for example 5 DCI format. Adding a control flag for each subframe 103 B DCI format shown in Figure 10, 90 B. Scheduler 35 determine sub-frame every given radio resource sharing. Scheduler 35 results for each subframe in 103 control flags to set B, respectively. Control signal generation of 76 adding a control flag for each subframe 103 B, DCI format 90 B. In other words, control signal generation, 76, subframe number-specified control flag 103 B adding DCI format 90 B. Submission of 23, sending controlled DUE3B to DCI format plus a control flag for each subframe 103 B 90 B.
[0072]
Each DUE3B controlled the subframe to use their own control flag 103 B ON and receive power estimate (Pd-PLc) Th below the threshold when the D2D communications transmitting power PD, to put controlling the transmission power of 63. As a result, the UL signal to the CUE3A D2D communication signal interference is reduced.
[0073]
If each DUE3B controlled the subframe to use their own control flag 103a is ON, and receive power estimate (Pd-PLc) Th below the threshold is not D2D communications transmitting power to set threshold th, controlling the transmission power of 63. As a result, the UL signal to the CUE3A D2D communication signal interference is reduced.
[0074]
Example 5 eNB2 the subframes per shared radio resource availability the test results every 103 B-control flag set. eNB2 the control flag for each subframe 103 B is attached to the DCI format 90 B and the DCI format 90 B to notify DUE3B of the controlled system. As a result, controlled DUE3B, can recognize the control flags for future sub 103 B in advance. Controlled DUE3B, subframe in the control flag for each subframe 103 B, use my control flag 103 B ON and receive power estimate (Pd-PLc) Th below the threshold, sending electricity to Pd, to put controlling the transmission power of 63. As a result, the UL signal to the CUE3A D2D communication signal interference is reduced.
[0075]
When controlled DUE3B the sub-frame sub-frame every control flags in the use of control flags 103 B ON and receive power estimate (Pd-PLc) Th below the threshold is not sending power to set threshold th, controlling the transmission power of 63. As a result, the UL signal to the CUE3A D2D communication signal interference is reduced.
[0076]
In above example 1 on the DUE3B control flag is ON, and the expected amount of received power (Pd-PLc) Th below threshold, D2D communications transmitting electricity PD, to put controlling transmission power of 63. Is not, however, limited this to, per the embodiment described below as examples 6. Same numerals on the same configuration above example 1 radio system 1 the optional description of the duplicate configuration and operation.
Example 6
[0077]
Figure 11 is a flow chart that demonstrates the behavior of the DUE3B involved in the communication process in example 6 1. Computes D2D communications transmitting power of Pd DUE3B communication control of 81, in Figure 11 (step S21), to determine whether the control flag 103 ON (step S22). Communications control, 81, 103 control flag on if (positive step S22), D2D communication stops (step S23), to quit the behavior shown in Figure 11. In addition, communication control of 81 to suppress the D2D communication by stopping control signal generation of 76 and RS formation, 77, D2D communication data signal generation, 75.
[0078]
End if (step S22 negation), communication control, 81, 103 control flag is not ON D2D communications transmitting power to set PD, of 63 transmit power control and run the D2D communications (step S24) shown in Figure 11-handling behavior.
[0079]
Without controlling the transmission power ON if the control flag 103 de3b that performs communication control shown in Figure 11, the D2D communications stop. As a result, the UL signal to the CUE3A D2D communication signal interference is reduced.
[0080]
Without controlling the transmission power ON if the control flag 103 example 5 DUE3B is, to stop the D2D communications. As a result, the UL signal to the CUE3A D2D communication signal interference is reduced.
[0081]
In above example 1 on the DUE3B control flag 103 ON and receive power estimate (Pd-PLc) Th below the threshold for the D2D communications transmitting electricity PD, to put controlling the transmission power of 63. Is not, however, limited this to, per the embodiment described below as examples 7. Same numerals on the same configuration above example 1 radio system 1 the optional description of the duplicate configuration and operation.
Examples 7
[0082]
Figure 12 is a flow chart that demonstrates the behavior of the DUE3B involved in the communication process in examples 7 1. In Figure 12 DUE3B in communication control of 81 was calculated D2D communications transmitting power of PD (steps S31), to determine whether the control flag 103 ON (step S32). Communications control, 81, 103 control flag on (positive step S32), and eNB2A evaluate PLc to calculate if (step S33).
[0083]
To determine whether a communication control of 81 is the Th below threshold estimated received power quantity (Pd-PLc) (step S34). Communication control of 81, estimated received power quantity (PD-PLc) below the threshold Th if (positive step S34), D2D communications transmitting power PD, to put to finish processing works and then run the D2D communications (step S35) to 63 in the transmission of transmit power control, shown in Figure 12.
[0084]
Communication control of 81 estimated received power quantity (Pd-PLc) Th below the threshold is not if (step S34 negation), D2D communication terminate stop (S36), Figure 12 indicates the behavior. The communications control, 81 stops data signal generation, 75, control signal generation, 76, RS production, 77, to suppress the D2D communications.
[0085]
To finish the process works if (negative step S32), communication control, 81, 103 control flag is not ON D2D communications transmitting power PD, to put, to 63 in the transmission of transmit power control and run the D2D communications (step S37) shown in Figure 12.
[0086]
DUE3B to run the communication control process as shown in Figure 12, control flags 103 ON and receive power estimate (Pd-PLc) Th below the threshold for the D2D communications transmitting electricity PD, to put controlling the transmission power in the submission of 63. As a result, can reduce signal interference of D2D communications CUE3A UL.
[0087]
If the DUE3B control flag 103 ON and receive power estimate (Pd-PLc) Th below the threshold is not to stop the D2D communication. As a result, can reduce signal interference of D2D communications CUE3A UL.
[0088]
Examples 7 DUE3B the control flag 103 ON and receive power estimate (Pd-PLc) Th below the threshold for the D2D communications transmitting electricity PD, to put controlling the transmission power in the submission of 63. As a result, can reduce signal interference of D2D communications CUE3A UL.
[0089]
If the DUE3B control flag 103 ON and receive power estimate (Pd-PLc) Th below the threshold is not to stop the D2D communication. As a result, can reduce signal interference of D2D communications CUE3A UL.
[0090]
Described as, in the above examples, description, UE3, ce3a and de3b functions switchable to mobile stations. However, for example, in the mobile station does not have the function as DUE3B where applicable.
[0091]
Also, configure the eNB, to separate radio control equipment and eNB2 of this embodiment is not wireless and control functions having what described in the device, but will be limited to ensure even better. In this case, radio and built-in antenna 11 and RF circuits 12, control unit and built-in memory 13 and 14 processor.
[0092]
Also, parts were graph components are not required necessarily physically configured as illustrated. I.e., illustrated not only specific forms of distributed and integrated, in whole or in part, depending on various load and usage in any functional or physically distributed and integration that can be configured.
[0093]
Processing functions performed at each unit in addition to the CPU (Central Processing Unit), or micro computer, Micro Processing Unit MPU and MCU (Micro Controller Unit), on all or a part to do even better. To run on the CPU (or micro computer MPU and MCU) program, or with wired logic hardware on the various capabilities in all or any of goes without saying that good to do some.
Sign description

[0094]
1 wireless system
2 eNB
3 UE
3A CUE
3B DUE
35 Scheduler
42 position detection,
62 receiver
63 transmitter
81 communication control unit
Of the claims

[Paragraph 1]
Control unit to control the 2 communication of the said data indicate that radio's no. 1 telecommunications base stations through a wireless communication between the mobile device and no. 2 telecommunications said mobile devices with each other without using the base station device that directly performs wireless communication mobile station equipment, to perform above no. 2 communication mobile station device for control information
Having to base station equipment.
[Paragraph 2]
The radio said state information
In claim 1 characterized that information shared with or without indicating whether or not sharing the same wireless resource said no. 1 communication mobile station device and mobile station device wherein no. 2 communication of base stations.
[Invoice section 3]
The radio said state information
In claim 1 characterized by indicating whether or not the above no. 2 communication mobile station device location information exists within a prescribed distance from the local information of base station equipment.
[Paragraph 4]
The above-mentioned control unit
Claim 1 wherein mobile station apparatus for carrying out said no. 2 communications, said no. 2 communication control command using said information to notify that characterized-in any one of 3 in base station equipment.
[Bill 5]
The above-mentioned control unit
Claim 1 wherein information pulled said mobile devices unit for the mobile device to perform above no. 2 communication, to inform you that characterized-in any one of 3 in base station equipment.
[Bill 6]
The above-mentioned control unit
Claim 1 characterized to inform the above-mentioned control information in the Sub unit assigned to above no. 2 communications each mobile station equipment for a mobile device to perform above no. 2 communication-in any one of 3 in base station equipment.
[Billing paragraph 7]
Receiver control information based on the information indicating the radio State's no. 1 telecommunications base stations through a wireless communication between the mobile device and no. 2 telecommunications said mobile devices with each other without using the base station device that directly performs wireless communication mobile station equipment, control above no. 2 communications received from the base station device and
And control unit which controls the radio output of no. 2 above, if the above information is received
Mobile device feature to have.
[Claim 8]
The above-mentioned control unit
Controlling the transmit power of no. 2 above, if the above information is received to claim 7 of mobile station equipment.
[Billing paragraph 9]
The above-mentioned control unit
Feature to stop the radio output of the previous No. 2 communication if you receive the above information in claim 7 of mobile station equipment.
[Claim paragraph 10]
Mobile station apparatus and said mobile station apparatus and wireless communication base station device and a wireless communication system in the
Base station device,
And control 1 to control the above no. 2 communication based on information indicating the radio State no. 1 communication base station device through a wireless telecommunications said mobile devices with each other and the No. 2 telecommunications said mobile devices with each other without using the base station device that directly performs wireless communication mobile station equipment, to perform above no. 2 communication mobile station device for control information
Having the
The mobile device to perform above no. 2 communication
Controlling the No. 2 communications wherein if you receive the above information to the second division
Wireless communication system having to feature.
[Section 11 claim]
The second control unit
Claim 10 to stop the radio output of the previous No. 2 communication if you receive the above information in a wireless communication system of.
[Billing paragraph 12]
To control the 2 communication of the said data indicate that radio's no. 1 telecommunications base stations through a wireless communication between the mobile device and the No. 2 telecommunications said mobile devices between said stations without directly performing wireless communication mobile station equipment, to perform above no. 2 communication mobile station device for control information
Communication control method of base station equipment and features to perform.
[Billing section 13]
Control information based on information indicate that radio's no. 1 telecommunications base stations through a wireless communication between the mobile device and no. 2 telecommunications said mobile devices with each other without using the base station device that directly performs wireless communication mobile station equipment, control above no. 2 communications receives from the base station device, and
If you receive the above information, radio output of the previous No. 2 communication control
Communication control method of mobile station equipment and features to perform.