Technical field
[0001]
The present invention relates to the field of communication, in particular to a resource indication method and device, and a communication system.
Background technique
[0002]
V2X (vehicle to X) is the information exchange between the car and the outside world, and it is the key technology of the future intelligent transportation system. V2X applications will improve driving safety, reduce congestion and vehicle energy consumption, improve traffic efficiency and in-vehicle entertainment information. It uses vehicle-to-vehicle (V2V, Vehicle-to-Vehicle), vehicle-to-Pedestrian (V2P, Vehicle-to-Pedestrian), vehicle-to-roadside infrastructure (V2I, Vehicle-to-Infrastructure), and vehicle and application server (V2N). , Vehicle-to-Network) communication is the basis for wireless communication and information exchange and processing between vehicle-X (V2X: vehicles, roads, pedestrians and the Internet, etc.).
[0003]
V2X services can be provided in two ways: PC5 interface, and Uu interface. Among them, the PC5 interface is an interface defined on the basis of a sidelink. Using this interface, terminal devices can directly communicate and transmit.
[0004]
In the long-term evolution system (LTE), V2X terminal equipment can either use the resources scheduled in the resource pool, or use its autonomously selected resources in the resource pool to send and receive data. Among them, for each The resource pool uses a corresponding bitmap to cyclically indicate which subframes in a system frame are included in the resource pool. In the frequency division duplex FDD configuration, the bitmap is used to indicate whether the corresponding physical subframe is included in the resource pool; because in the time division duplex TDD configuration, V2X can only use the uplink subframe, so the bitmap indicates the uplink subframe. The set of frames, that is, whether the subframe of the logical subframe sequence number in the corresponding set is included in the resource pool.
[0005]
It should be noted that the above introduction to the technical background is only set forth to facilitate a clear and complete description of the technical solutions of the present invention and to facilitate the understanding of those skilled in the art. It should not be considered that the above technical solutions are well-known to those skilled in the art just because these solutions are described in the background art part of the present invention.
[0006]
Summary of the invention
[0007]
In future communication systems, such as the New Radio (NR) system, supporting flexible TDD configuration can flexibly configure the transmission direction type for time domain resources. Among them, the transmission direction type includes uplink, downlink, and flexible. The types of resources in a cycle are configured in three levels.
[0008]
The first level, semi-static configuration, is configured by high-level parameters at the cell level to configure the transmission direction type of each symbol in a cycle; the second level, semi-static configuration, that is, configured by high-level parameters dedicated to the user, it further Configure the transmission direction type of each symbol in the resource whose transmission direction type is "X" after the upper level configuration; the third level, dynamic configuration, that is, configured by the downlink control information, it configures the transmission direction type after the upper two levels of configuration The transmission direction type of each symbol in the resource whose transmission direction type is still "X".
[0009]
In the existing V2X communication, when the V2X terminal equipment is working on the carrier of the Uu interface, in order to avoid interference, the V2X terminal equipment can only use the uplink frequency point of the Uu interface, because NR introduces the above-mentioned three-level flexible TDD configuration At present, there is no solution for how to indicate the resources in the resource pool and how the terminal device determines the resources in the resource pool when the NR V2X is deployed on the carrier of the Uu licensed frequency band.
[0010]
In order to solve the above-mentioned problems, embodiments of the present invention provide a resource indication method and device, and a communication system.
[0011]
According to the first aspect of this embodiment, there is provided a resource indication method, wherein the method includes:
[0012]
The terminal device receives the first indication information sent by the network device and used to indicate the first time domain resource belonging to the resource pool; where the first indication information is used to indicate at least one second time in at least one first time domain unit A domain unit, the symbols of the at least one second time domain unit whose transmission direction type is uplink constitute the first time domain resource in the resource pool, where the transmission direction type in the time domain unit is configured by semi-static configuration information Yes, each time domain unit contains at least one uplink symbol;
[0013]
The terminal device receives second indication information sent by the network device for dynamically indicating that the second time domain resource belongs to the resource pool; wherein the second indication information is used to indicate that the third time domain resource belongs to the resource pool Time domain resources; where the third time domain resource includes time domain resources whose transmission direction type remaining after the semi-static configuration information is configured is flexible and/or the at least one first time domain unit except the at least one second time domain unit At least one remaining time domain unit outside the time domain unit;
[0014]
The terminal device uses the first time domain resource and/or the second time domain resource in the resource pool to send and receive data.
[0015]
According to a second aspect of this embodiment, there is provided a resource indication method, wherein the method includes:
[0016]
The terminal device receives the third indication information sent by the network device and used to dynamically indicate the time domain resources in the resource pool;
[0017]
The terminal device uses the time domain resources in the resource pool to send and receive data.
[0018]
According to a third aspect of this embodiment, there is provided a resource indication method, wherein the method includes:
[0019]
The first terminal device receives semi-static configuration information sent by the network device, or generates semi-static configuration information, where the semi-static configuration information is used to configure the transmission direction type of the time domain resource, where the transmission direction type includes uplink, downlink, flexible;
[0020]
The first terminal device sends broadcast information to the second terminal device, where the broadcast information includes the semi-static configuration information.
[0021]
According to a fourth aspect of this embodiment, there is provided a resource indicating device, wherein the device includes:
[0022]
The first receiving unit is configured to receive first indication information used to indicate a first time domain resource belonging to a resource pool from a network device; wherein, the first indication information is used to indicate at least one first time domain unit At least one second time domain unit of the at least one second time domain unit, the symbol whose transmission direction type is uplink in the at least one second time domain unit constitutes the first time domain resource in the resource pool, where the transmission direction type in the time domain unit is Configured by semi-static configuration information, each time domain unit contains at least one uplink symbol;
[0023]
The second receiving unit is configured to receive second indication information sent by the network device for dynamically indicating the second time domain resource belonging to the resource pool; wherein the second indication information is used to indicate the third time domain resource Time domain resources belonging to the resource pool in the resource pool; where the third time domain resource contains the semi-static configuration information and the remaining transmission direction type is flexible time domain resources and/or the at least one first time domain unit is divided into At least one remaining time domain unit outside the at least one second time domain unit;
[0024]
The first processing unit is configured to use the first time domain resource and/or the second time domain resource in the resource pool to send and receive data.
[0025]
According to a fifth aspect of this embodiment, there is provided a resource indicating device, wherein the device includes:
[0026]
A third receiving unit, configured to receive third indication information sent by a network device and used to dynamically indicate time domain resources in the resource pool;
[0027]
The second processing unit is configured to use the time domain resources in the resource pool to send and receive data.
[0028]
According to a sixth aspect of this embodiment, there is provided a resource indicating device, wherein the device includes:
[0029]
The fourth receiving unit is configured to receive semi-static configuration information sent by a network device, or generate semi-static configuration information, where the semi-static configuration information is used to configure the transmission direction type of time domain resources, where the transmission direction type includes Upward, downward, flexible;
[0030]
The first sending unit is configured to send broadcast information to the second terminal device, where the broadcast information includes the semi-static configuration information.
[0031]
According to a seventh aspect of this embodiment, a communication system is provided, the communication system includes a network device and a terminal device, and the terminal device includes the resource indicating device according to the first aspect, the second aspect, or the third aspect.
[0032]
The beneficial effect of the embodiments of the present invention is that the semi-statically configured and/or dynamically configured time-domain resources can be included in the resource pool through the indication information, and the V2X terminal device can use the resources in the resource pool. Data transmission and reception can support V2X communication in future communication systems.
[0033]
With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating the ways in which the principles of the present invention can be adopted. It should be understood that the scope of the embodiments of the present invention is not limited thereby. Within the scope of the terms of the appended claims, the embodiments of the present invention include many changes, modifications and equivalents.
[0034]
Features described and/or shown for one embodiment can be used in one or more other embodiments in the same or similar manner, combined with features in other embodiments, or substituted for features in other embodiments .
[0035]
It should be emphasized that the term "comprising/comprising" when used herein refers to the existence of a feature, a whole, a step or a component, but does not exclude the existence or addition of one or more other features, a whole, a step or a component.
Description of the drawings
[0036]
The elements and features described in one drawing or one embodiment of the embodiment of the present invention may be combined with the elements and features shown in one or more other drawings or embodiments. In addition, in the drawings, similar reference numerals indicate corresponding parts in several drawings, and may be used to indicate corresponding parts used in more than one embodiment.
[0037]
The included drawings are used to provide a further understanding of the embodiments of the present invention, which constitute a part of the specification, are used to exemplify the embodiments of the present invention, and together with the text description, explain the principle of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor.
[0038]
In the attached picture:
[0039]
FIG. 1 is a schematic diagram of the communication system of this embodiment;
[0040]
Fig. 2 is a flow chart of the resource indication method in embodiment 1;
[0041]
Fig. 3 is a schematic diagram of resource indication in embodiment 1;
[0042]
4 is a schematic diagram of resource indication in Embodiment 1;
[0043]
Fig. 5 is a flowchart of a resource indication method in embodiment 2;
[0044]
Fig. 6 is a flowchart of a resource indication method in embodiment 3;
[0045]
FIG. 7 is a schematic diagram of resource indication in Embodiment 3;
[0046]
Fig. 8 is a flowchart of a resource indication method in embodiment 4;
[0047]
Fig. 9 is a flowchart of a resource indication method in embodiment 5;
[0048]
Fig. 10 is a flowchart of a resource indication method in embodiment 6;
[0049]
Fig. 11 is a flowchart of a resource indication method in embodiment 7;
[0050]
Fig. 12 is a flowchart of a resource indication method in embodiment 8;
[0051]
FIG. 13 is a flowchart of a resource indication method in Embodiment 9;
[0052]
Fig. 14 is a flowchart of a resource indication method in embodiment 10;
[0053]
15 is a schematic diagram of the structure of a resource indicating device in Embodiment 11;
[0054]
16 is a schematic diagram of the structure of a resource indicating device in Embodiment 12;
[0055]
FIG. 17 is a schematic diagram of the structure of a resource indicating device in Embodiment 13;
[0056]
18 is a schematic diagram of the structure of a resource indicating device in Embodiment 14;
[0057]
19 is a schematic diagram of the structure of a resource indicating device in Embodiment 15;
[0058]
20 is a schematic diagram of the structure of a resource indicating device in Embodiment 16;
[0059]
21 is a schematic diagram of the structure of a resource indicating device in Embodiment 17;
[0060]
Fig. 22 is a flowchart of a resource indication method in embodiment 18;
[0061]
FIG. 23 is a schematic diagram of the structure of a terminal device in Embodiment 18;
[0062]
FIG. 24 is a schematic diagram of the structure of a network device in Embodiment 18.
Detailed ways

29. A resource indication method, including:
[0348]
The network device sends first indication information used to indicate the first time domain resource in the resource pool to the terminal device; wherein the first indication information is used to indicate at least one second time domain in at least one first time domain unit The symbol whose transmission direction type is uplink in the at least one second time domain unit constitutes the first time domain resource in the resource pool, wherein the transmission direction type in the time domain unit is configured by semi-static According to the information configuration, each of the time domain units includes at least one uplink symbol.
[0349]
30. A resource indication method, including:
[0350]
The terminal device receives fourth indication information sent by the network device and used to indicate time domain resources in the resource pool;
[0351]
Wherein, the fourth indication information is used to indicate a fourth time domain unit belonging to the resource pool in at least one fourth time domain unit, wherein each fourth time domain unit includes at least one flexible symbol and/or At least one uplink symbol;
[0352]
The terminal device uses the time domain resources in the resource pool to send and receive data.
[0353]
31. The method according to Supplement 30, wherein the method further includes:
[0354]
The terminal device determines that the downlink symbols in the fourth time domain unit of the resource pool indicated by the dynamic resource indication information, or the downlink and flexible symbols are not included in the resource pool.
[0355]
32. The method according to appendix 30 or 31, wherein the at least one fourth time domain unit is a time domain resource after semi-static configuration information is configured with a transmission direction type.
[0356]
33. The method according to appendix 30 or 31 or 32, wherein the fourth indication information is a bitmap, or the fourth indication information indicates the start of a fourth time domain unit belonging to the resource pool Location and quantity.
[0357]
34. The method according to Supplement 32 or 33, wherein the method further comprises:
[0358]
The terminal device receives the semi-static configuration information and/or dynamic resource indication information sent by the network device.
[0359]
35. A resource indication method, including:
[0360]
The network device sends the fourth indication information used to indicate the time domain resources in the resource pool to the terminal device;
[0361]
Wherein, the fourth indication information is used to indicate a fourth time domain unit belonging to the resource pool in at least one fourth time domain unit, wherein each fourth time domain unit includes at least one flexible symbol and/or At least one uplink symbol.
Claims
[Claim 1]
A resource indicating device includes: a first receiving unit configured to receive first indication information sent by a network device and used to indicate a first time domain resource belonging to a resource pool; wherein the first indication information is used for Indicate at least one second time domain unit in at least one first time domain unit, and symbols in the at least one second time domain unit whose transmission direction type is uplink constitute the first time domain resource in the resource pool, where , The transmission direction type in the time domain unit is configured by semi-static configuration information, and each time domain unit contains at least one uplink symbol; and the second receiving unit is configured to receive the transmission direction sent by the network device for Dynamically indicate the second indication information belonging to the second time domain resource in the resource pool; wherein the second indication information is used to indicate the time domain resource belonging to the resource pool in the third time domain resource; wherein, The third time domain resource includes a time domain resource whose transmission direction type remaining after the semi-static configuration information is configured is flexible and/or the at least one first time domain unit except for the at least one second time domain unit At least one remaining time-domain unit of, and a first processing unit configured to use the first time-domain resource and/or the second time-domain resource in the resource pool to send and receive data.
[Claim 2]
The apparatus according to claim 1, wherein the time domain unit includes a first predetermined number of symbols, and wherein the first predetermined number of symbols are all uplink symbols.
[Claim 3]
The apparatus according to claim 1, wherein the first indication information is a bitmap, or the first indication information indicates the starting position and length of the at least one second time domain unit in one period.
[Claim 4]
The apparatus according to claim 1, wherein the apparatus further comprises: a third receiving unit configured to receive the semi-static configuration information sent by the network device, the semi-static configuration information being used to configure the time domain The transmission direction type of the resource; wherein the transmission direction type includes uplink, downlink, and flexible, and the semi-static configuration information includes cell-level configuration information and/or user-specific configuration information.
[Claim 5]
The apparatus according to claim 4, wherein the same or different first indication information is used to indicate the second time domain unit configured by the cell-level configuration information and the user-specific configuration information respectively.
[Claim 6]
The apparatus according to claim 5, wherein when different first indication information is used, the number of symbols included in each time domain unit configured by the cell-level configuration information and the user-specific configuration information is the same or different.
[Claim 7]
The apparatus according to claim 1, wherein the second indication information is used to indicate the transmission direction type of the symbol in the third time domain resource, wherein the transmission direction type includes uplink, downlink, flexible, and side link, The third time domain resource whose transmission direction type is the side link belongs to the resource pool.
[Claim 8]
The apparatus according to claim 1, wherein the second indication information is included in the first downlink control information, the format of the first downlink control information is format 2_0, and the second indication information is the first index Information, the first index information is used to indicate one or at least two second index information, each second index information is used to indicate a format of a second time domain unit, and the format of the second time domain unit includes the The transmission direction type of each symbol in the second time domain unit, and the time domain resources whose transmission direction type is the side link belong to the resource pool; or, the second indication information is included in the second downlink control information. The second indication information is first index information, and each first index information is used to indicate one or at least two second index information, and each second index information is used to indicate a bitmap, or each first index information It is used to indicate one or at least two bitmaps. In the bitmap, the time domain unit corresponding to the first value of the bit value belongs to the resource pool, and the time domain unit corresponding to the second value of the bit value does not belong to all In the resource pool.
[Claim 9]
8. The device according to claim 8, wherein the first processing unit is further configured to determine the format or format of the second time domain unit indicated by the second index information according to the second index information and a preset correspondence relationship. A bitmap, wherein the corresponding relationship represents a corresponding relationship between different second index information and the format/bitmap of the second time domain unit.
[Claim 10]
The apparatus according to claim 9, wherein the corresponding relationship is for a terminal device of the Internet of Vehicles.
[Claim 11]
The apparatus according to claim 1, wherein the uplink symbols and/or flexible symbols in the at least one remaining time domain unit belong to the third time domain resource.
[Claim 12]
A resource indicating device includes: a fourth receiving unit, which is used to receive third indication information sent by a network device for dynamically indicating time domain resources in a resource pool; and a second processing unit, which is used to use the resource The time domain resources in the pool send and receive data.
[Claim 13]
The apparatus according to claim 12, wherein the third indication information is used to indicate a time domain resource belonging to the resource pool in a fourth time domain resource; wherein the fourth time domain resource includes semi-static configuration information At least one third time domain unit after the transmission direction type is configured.
[Claim 14]
The apparatus according to claim 13, wherein the third indication information is included in first downlink control information, the format of the first downlink control information is format 2_0, and the third indication information is the first index Information, the first index information is used to indicate one or at least two second index information, each second index information is used to indicate a format of a time domain unit, and the format of the time domain unit includes the time domain unit The transmission direction type of each symbol, the transmission direction type includes uplink, downlink, flexible, and side link, and the fourth time domain resource whose transmission direction type is the side link belongs to the resource pool.
[Claim 15]
The apparatus according to claim 13, wherein the third indication information is included in second downlink control information, the third indication information is first index information, and each first index information is used to indicate one or at least two Second index information, each second index information is used to indicate a bitmap, or each first index information is used to indicate one or at least two bitmaps, in the bitmap, the bit value is the first The time domain unit corresponding to a value belongs to the resource pool, and the time domain unit whose bit value is the second value does not belong to the resource pool.
[Claim 16]
The device according to claim 14 or 15, wherein the second processing unit is further configured to determine the time domain resources belonging to the resource pool according to the second index information and a preset correspondence relationship, wherein The corresponding relationship indicates the corresponding relationship between different second index information and the format/bit map of the time domain unit.
[Claim 17]
The apparatus according to claim 14 or 15, wherein the third indication information indicates that the symbol whose transmission direction type is side link covers the transmission direction type of the fourth time domain resource as uplink and/or flexible and/or Downlink symbols; or, the third indication information indicates that the symbols whose bit values ​​are the first value cover the symbols whose transmission direction type is uplink and/or flexible and/or downlink in the fourth time domain resource.
[Claim 18]
A resource indicating device, which is configured in a first terminal device, includes: a third processing unit, which is used to receive semi-static configuration information sent by a network device, or to generate semi-static configuration information, wherein the semi-static configuration information is used In the configuration of the transmission direction type of the time domain resource, the transmission direction type includes uplink, downlink, and flexible; a first sending unit configured to send broadcast information to a second terminal device, wherein the broadcast information includes the Semi-static configuration information.
[Claim 19]
The apparatus according to claim 18, wherein the transmission direction type further includes a side link.
[Claim 20]
The apparatus according to claim 18, wherein the first terminal equipment works in the coverage of a cell and is in an idle state or is not in the coverage of the cell.