WO2015139304A1

WO2015139304A1 - Resource pool configuration method, resource selection method and apparatus and communication system

Info

Publication number: WO2015139304A1
Application number: PCT/CN2014/073865
Authority: WO
Inventors: 李宏超; 王轶; 周华
Original assignee: 富士通株式会社; 李宏超; 王轶; 周华
Priority date: 2014-03-21
Filing date: 2014-03-21
Publication date: 2015-09-24

Abstract

Provided in the embodiment of the present invention are a resource pool configuration method, a resource selection method and apparatus and a communication system. The resource pool configuration method comprises: a first communication apparatus configuring resource pools for a second communication apparatus, wherein within the period and bandwidth of one of the resource pools, resource units do not occupy all physical resource blocks (PRB) in a time-frequency domain; and/or the lengths of cyclic prefixes (CP) used by the resource units being the same within one of the resource pools. Through the use of the method of this embodiment, excellent frequency-domain and time-domain diversities are offered to guarantee average performances in broadcast communications and discoveries on the basis of the feature that the resource units do not occupy all the physical resource blocks (PRB) in the time-frequency domain, and thus a small influence is exerted upon traffic scheduling of a cellular network and also the flexibility thereof is ensured as much as possible; and on the basis of the feature that the lengths of the CPs used by the resource units are the same within the resource pool, the inter-carrier interference and the inter-subchannel interference caused by the different lengths of the CPs used by transmission entities are minimized.

Description

Resource pool configuration method, resource selection method, device, and communication system

The present invention relates to the field of communications, and in particular, to a resource pool configuration method, a resource selection method, an apparatus, and a communication system. Background technique

Point-to-point (P2P, Peer-to-Peer) communication or device-to-device (D2D) proximity service is a form of more direct interaction and communication between user equipment. If there is no network side infrastructure support, then D2D communication is similar to communication in an ad hoc network. If there is support from the network side infrastructure, such as the integration of D2D into the cellular communication network, then at least the following benefits and applications:

D2D discovery can serve applications of neighboring devices. This feature of User Equipment (UE) can serve multiple commercial application levels and public security areas;

D2D communication can serve the instant messaging needs of the public security field, and can also provide services related to business needs, such as social networks, smart homes, etc.;

D2D communication can be used when neighboring users have communication requirements. This communication method can increase system throughput, reduce user power consumption, and perform traffic offloading from the eNodeB side. D2D is used as a relay. The technology can enhance cell coverage.

In the process of implementing the present invention, the inventors have found that allocating resources for D2D discovery and communication is a key technology for integrating D2D services with existing LTE cellular networks, and how to allocate resources for D2D discovery and communication to minimize the number of cells. The impact of communication is the direction of the industry.

It should be noted that the above description of the technical background is only for the purpose of facilitating the clear and complete description of the technical solutions of the present invention, and is convenient for understanding by those skilled in the art. The above technical solutions are not considered to be well known to those skilled in the art simply because these solutions are set forth in the background section of the present invention. Summary of the invention

The embodiment of the invention provides a resource pool configuration method, a resource selection method, a device and a communication system, so as to minimize the impact of the resource pool on the scheduling of the cellular communication. According to a first aspect of the embodiments of the present invention, a resource pool configuration method is provided, where the method includes:

The first communication device configures a resource pool for the second communication device, wherein, within a period and a bandwidth of the resource pool, each resource unit does not occupy all physical resource blocks (PRBs) in the frequency domain; and/or In one of the resource pools, the cyclic prefix (CP) used by each resource unit has the same length.

According to a second aspect of the embodiments of the present invention, a resource selection method is provided, where the method includes: receiving, by a second communication device, scheduling information including a resource pool configured by the first communication device;

The second communication device selects a resource unit from the resource pool to schedule transmission of its data or listens on a resource unit selected from the resource pool to receive data;

Wherein, in a period and a bandwidth of the resource pool, each resource unit does not occupy all physical resource blocks (PRBs) in the frequency domain; and/or, in one of the resource pools, used by each resource unit The cyclic prefix (CP) is the same length.

According to a third aspect of the present invention, a resource pool configuration apparatus is provided, which is applied to a communication device, where the apparatus includes:

a configuration unit, configured to allocate a resource pool for other communication devices, wherein, within a period and bandwidth of the resource pool, each resource unit does not occupy all physical resource blocks (PRBs) in the frequency domain; and/or In one of the resource pools, the cyclic prefix (CP) used by each resource unit has the same length.

According to a fourth aspect of the embodiments of the present invention, there is provided a communication device, wherein the communication device comprises the aforementioned resource pool configuration device.

According to a fifth aspect of the present invention, a resource selection apparatus is provided, which is applied to a communication device, where the apparatus includes:

a receiving unit that receives scheduling information including a resource pool configured by the other communication device for the communication device; a communication unit that selects a resource unit from the resource pool to schedule transmission of data of the communication device or from the resource Listening on the selected resource unit in the pool to receive data;

According to a sixth aspect of the embodiments of the present invention, there is provided a communication device, wherein the communication device comprises the aforementioned resource selection device. According to a seventh aspect of the embodiments of the present invention, there is provided a communication system, comprising: a first communication device and a second communication device, wherein

The first communication device is configured to: configure a resource pool for the second communication device, where, in a period and a bandwidth of the resource pool, each resource unit does not occupy all physical resource blocks in the frequency domain (PRB); and/or, in one of the resource pools, each resource unit uses the same cyclic prefix (CP); the second communication device is configured to receive the first communication device Scheduling information of the configured resource pool; selecting a resource unit from the resource pool to schedule transmission of its data or listening on a resource unit selected from the resource pool to receive data.

According to a further aspect of the present invention, a computer readable program is provided, wherein when the program is executed in a communication device, the program causes a computer to execute the resource of the aforementioned first aspect in the communication device The pool configuration method or the resource selection method described in the foregoing second aspect.

According to a further aspect of the present invention, there is provided a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform the resource pool configuration method of the first aspect described above or a The resource selection method described in the second aspect.

The beneficial effects of the embodiments of the present invention are: By the method, the device and the system of the embodiments of the present invention, the impact of the resource pool on the scheduling of the cellular communication is minimized.

Specific embodiments of the present invention are disclosed in detail with reference to the following description and the accompanying drawings, which illustrate the manner in which the principles of the invention can be employed. It should be understood that the embodiments of the invention are not limited in scope. The embodiments of the present invention include many variations, modifications, and equivalents within the spirit and scope of the appended claims.

Features described and/or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, in combination with, or in place of, features in other embodiments. .

It should be emphasized that the term "comprising" or "comprising" is used to mean the presence of a feature, component, step or component, but does not exclude the presence or addition of one or more other features, components, steps or components. DRAWINGS

The accompanying drawings are included to provide a further understanding of the embodiments of the invention Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art Other drawings may also be obtained from these drawings without the inventive labor. In the drawings: FIG. 1 is a flowchart of a resource pool configuration method according to an embodiment of the present invention;

2 is a schematic diagram of one embodiment of a structure of a resource pool;

3 is a schematic diagram of another embodiment of a structure of a resource pool;

4 is a schematic diagram of still another embodiment of a structure of a resource pool;

5 is a schematic diagram of still another embodiment of a structure of a resource pool;

6 is a schematic structural diagram of a resource pool configuration apparatus according to an embodiment of the present invention;

7 is a schematic structural diagram of an embodiment of a base station according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of an embodiment of a user equipment according to an embodiment of the present invention;

9 is a flowchart of a resource selection method according to an embodiment of the present invention;

FIG. 10 is a schematic diagram showing the composition of a resource selection apparatus according to an embodiment of the present invention; FIG.

11 is a schematic structural diagram of another embodiment of a base station according to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of another embodiment of a user equipment according to an embodiment of the present invention;

FIG. 13 is a schematic diagram showing the topology of a communication system according to an embodiment of the present invention. detailed description

The foregoing and other features of the invention will be apparent from the The specific embodiments of the present invention are disclosed in the specification and the drawings, which illustrate the embodiments in which the principles of the invention may be employed, it is understood that the invention is not limited to the described embodiments, but instead The invention includes all modifications, variations and equivalents falling within the scope of the appended claims. Various embodiments of the present invention will be described below with reference to the accompanying drawings. These embodiments are merely exemplary and are not limiting of the invention.

The embodiment of the present invention provides a resource pool configuration method, a resource selection method, a device, and a communication system. The resource pool configured by the resource pool configuration method in the embodiment of the present invention and the resource unit in the resource pool may be used for performing D2D service ( Discovery and/or communication), which can also be used for ad hoc network transmission, can also be used for distributed communication, etc., and the resource pool and resource units within the resource pool can be used for data channel and/or control of the communication device. Transmission of channel and/or control signaling and/or radio resource management information, etc., will not be described below. The method, device and system of the present embodiment will be described in detail below with reference to the accompanying drawings.

Example 1

The embodiment of the invention provides a resource pool configuration method, which can be applied to a base station, and can also be applied. In the user equipment, in the following description, they are collectively referred to as a first communication device. 1 is a flow chart of the method. Referring to FIG. 1, the method includes:

Step 101: The first communication device configures a resource pool for the second communication device, where, in a period and a bandwidth of the resource pool, each resource unit does not occupy all physical resource blocks (PRBs) in the frequency domain; / or, in one of the resource pools, the cyclic prefix (CP) used by each resource unit has the same length.

In this embodiment, as described above, the first communications device may be a base station or a user equipment, which may configure a resource pool for the second communications device, where the second communications device may be a D2D service, ad hoc The transmitting end of the network transmission, or the distributed communication, may also be a receiving end that performs D2D service, ad hoc network transmission, or distributed communication, and the transmitting end and the receiving end are based on the resource pool configured by the first communication device, A resource unit is selected from the resource pool for D2D service, ad hoc network transmission, or distributed communication.

In this embodiment, a resource pool refers to a collection of all available resource units. The resource pool may be configured through RRC signaling or configured by other signaling. This embodiment is not limited thereto.

In an embodiment of this embodiment, all resource elements in a resource pool do not occupy all PRBs in the time-frequency domain within the entire resource pool period and bandwidth.

In an embodiment of the resource pool, in a resource pool, there is at least one transmission time interval (ΤΉ) offset between any two resource units, that is, in the time domain, for all of the resources in a resource pool. Resource unit, there is an offset between any two resource units, the offset can be a ΤΉ offset, or an offset of two or more TTIs, thereby reducing the half-duplex User impact and in-band-emission, and in the time domain, within a resource pool period, there are idle resources for cellular communication; and/or, within a resource pool, There is at least one physical resource block (PRB) offset between any two resource units, that is, in the frequency domain, for all resource elements in a resource pool, there is an offset between any two resource units. The offset may be an offset of one PRB, or may be an offset of two or more PRBs, thereby obtaining a diversity gain in the frequency domain, and in the frequency domain, in a resource Cell cycle, the existence of idle resources for cellular communication.

In another embodiment of the resource pool, in a resource pool, there is at least one transmission time interval (ΤΉ) offset between at least two resource units, that is, in the time domain, for a resource pool. All resource units, there are at least two resource units with an offset, the offset may be a ΤΉ offset, or an offset of two or more TTIs, thereby reducing the half The impact of duplex users and the impact of in-band-emission, and in the time domain, within the period of a resource pool, there is also idle Resources may be used for cellular communication; and/or, within one of the resource pools, there is at least one physical resource block (PRB) offset between at least two resource elements, ie, in the frequency domain, for one All resource units in the resource pool have an offset between at least two resource units, and the offset may be an offset of one PRB, or may be an offset of two or more PRBs. The diversity gain in the frequency domain can be obtained, and in the frequency domain, there are also idle resources available for cellular communication within the period of one resource pool.

In another embodiment of the resource pool, a frequency domain location of a complement of all resource elements within a period and bandwidth of a resource pool (ie, all resource elements within the resource pool) is distributed in the The resource pool occupies all the PRBs of bandwidth. Therefore, within a period of a resource pool, when the cellular wide area network needs to schedule any one of the uplink and/or downlink system resources, at least one subframe (ΤΉ) can always be found to execute, and not in the resource pool. The resource units overlap.

In this embodiment, the size of each resource unit in a resource pool may be the same or different. 2 to 5 are schematic diagrams showing a pattern (structure) of a resource pool configured according to the method of the present embodiment. In this embodiment, the offset refers to a positional shift in the time domain or the frequency domain. For resource units of different sizes, after the offset, although the resource units may partially overlap, the situation is considered as being present. Offset.

As shown in FIG. 2, in the resource pool, there are three resource units, which are denoted as #1, #2, and #3, wherein the resource unit labeled #1 occupies two ΤΉ in the time domain. The location of the two PRBs is occupied by the domain; the resource unit labeled #2 occupies six 在 in the time domain, and occupies four PRB locations in the frequency domain; the resource element labeled #3 is in the time domain. It takes up two ΤΉ and occupies two PRB positions in the frequency domain. It can be seen that the size of each resource unit is different, and within the period and bandwidth of the resource pool, the resource unit labeled #1 and the resource unit labeled #2 and the resource unit labeled #3 are in the time domain. The domains are all staggered from each other. Therefore, in this embodiment, there is one or more TTI offsets in each time zone between resource elements, and one or more PRBs exist in the frequency domain. Offset. For example, a resource unit labeled #1 in the time domain needs to be moved twice to overlap with a portion of the resource unit labeled #2, and therefore, for a resource unit labeled #1 and #2, at the time There are two or more offsets on the domain. In addition, as shown in FIG. 2, within one cycle of the resource pool, each cell has a PRB that is not occupied by resource elements in the resource pool, and these PRBs can be scheduled by the cellular WAN. Thus, when the cellular WAN needs to schedule any PRB of the resource pool, the corresponding subframe (ΤΉ) can be found to be executed.

As shown in FIG. 3, in the resource pool, there are ten resource units, which are denoted as #1~#10, each resource unit has the same size, and is offset from each other in the time domain, each occupying one ΤΉ, in the frequency domain. Partial overlap, each occupying two The location of the PRB. Therefore, in this embodiment, there is a ΤΉ offset between two resource units adjacent in the time domain (for example, a resource unit labeled #1 and a resource unit labeled #2), that is, One of the resource units only needs to move one ΤΉ to be in the same TTI as the other resource unit; two resource units adjacent in the frequency domain (for example, the resource unit labeled #1 and the resource unit labeled #2) There is a PRB offset between them, that is, one resource unit needs only to move one PRB position to be located at the same PRB position as another resource unit; and in the time domain or frequency domain There are two or more offsets of ΤΉ or PRB between resource elements that are not adjacent, and the method for determining the offset is as described above. In addition, as shown in FIG. 3, within one cycle of the resource pool, there are PRBs that are not occupied by resource units in each cell, and these PRBs can be scheduled by the cellular WAN. Thus, when the cellular wide area network needs to schedule any one of the PRBs of the resource pool, the corresponding subframe can be found to be executed.

As shown in FIG. 4, in the resource pool, there are eight resource units, which are denoted as #1~#8, and the size of each resource unit is also the same, and there are partial overlaps or non-overlaps in the time domain, each occupying two ΤΉ, staggered or overlapped with each other in the frequency domain, each occupying a position of a PRB. Therefore, in this embodiment, there is a ΤΤΙ offset or two ΤΤΙ offsets between two resource elements adjacent in the time domain, between two resource units adjacent in the frequency domain. There is an offset of one PRB or no offset, and there are two or more offsets of ΤΉ or PRB between resource elements that are not adjacent to each other in the time domain or in the frequency domain, with respect to the offset The method of determining the amount is as described above. For example, there is a ΤΉ offset in the time domain between the resource unit labeled #1 and the resource unit labeled #2, and a PRB offset in the frequency domain; the resource unit labeled #4 and There are two ΤΤΙ offsets in the time domain between the resource elements labeled #5, and there are five PRB offsets in the frequency domain; the resource unit labeled #1 and the resource unit labeled #7 There is no offset in the frequency domain, and there are seven ΤΉ offsets in the time domain. In addition, as shown in FIG. 4, within one cycle of the resource pool, there are PRBs not occupied by resource units in each cell, and these PRBs can be scheduled by the cellular WAN. Thus, when the cellular WAN needs to schedule any one of the PRBs of the resource pool, the corresponding subframe can be found to be executed.

As shown in FIG. 5, in the resource pool, there are three resource units, the size of each resource unit is different, and the resource unit labeled #1 and the resource unit labeled #2 differ in time domain. The offset of each ,, which overlaps partially in the frequency domain but differs by the offset of the two PRBs. Similarly, the resource unit labeled #2 and the resource unit labeled #3 differ in the time domain by two TTI offsets, partially overlapping in the frequency domain but differing by two or more PRBs. Transfer amount. In addition, the offset between the resource unit labeled #1 and the resource unit labeled #3 differs by four TTIs in the time domain, and overlaps in the frequency domain but differs by one PRB. In addition, as shown in FIG. 5, within one cycle of the resource pool, each TTI includes PRBs that are not occupied by resource units, and the PRBs can be scheduled by the cellular WAN, and there are two PRBs included in the ΤΉ They are not occupied by this resource unit. At this time, when the cellular WAN needs to schedule any one of the PRBs of the resource pool, the corresponding subframe can be found and executed.

In the example of FIG. 2 to FIG. 5, the structure of the resource pool is described. However, the pattern of the resource pool illustrated in FIG. 2 to FIG. 5 is merely an example, for example, in other embodiments, within a certain The PRB may also be occupied by resource units within the resource pool or not occupied by any resource unit within the resource pool. As long as it is satisfied within the period and bandwidth of one of the resource pools, each resource unit does not occupy all PRBs in the frequency domain.

With the structure of the resource pool of the present embodiment, since data for D2D service, ad hoc network transmission, or distributed communication is transmitted on different resource units in one resource pool, in-band transmission between UEs is reduced. Also, in the present embodiment, the size of the resource pool and the capacity of the resource unit are easily expanded, thereby being applicable to various service types and load states. In addition, due to the limitations of half-duplex on D2D design assumptions, the time domain diversity of resource elements can provide more mutual discovery and communication opportunities for UEs allocated in the same resource pool.

In another embodiment of the present embodiment, in order to prevent frequency domain orthogonality destruction or inter-carrier interference caused by different CP lengths in the same resource pool, each resource element in a resource pool may be Use CPs of the same length, for example using regular CPs, or both using extended CPs.

In this embodiment, the specific structure of the resource pool is not limited, and the three structures proposed in the foregoing embodiments may be used, and the structure of other resource pools may be used. This embodiment is not limited thereto.

In this embodiment, the CP length used by each resource unit in the resource pool may be configured together with the resource pool, that is, when the first communication device configures the resource pool for the second communication device, and is also the second communication device. The length of the CP used by each resource unit in the resource pool is configured. In this embodiment, the CP lengths of the resource units are the same.

Therefore, when the second communication device as the transmitting end is scheduled to use a certain resource unit in a certain resource pool, or when a certain resource unit in a certain resource pool is selected autonomously, the configuration of the resource pool is You can know which CP length should be selected. As the second communication device at the receiving end, the configured resource pool can be used to know which CP length should be used as a hypothesis when performing discovery or communication reception, thereby improving the efficiency of reception.

In this embodiment, after the first communication device configures the resource pool for the second communication device (optional, and configures the CP length used by each resource unit in the resource pool), the resource pool may be configured by using a scheduling message. Phase The off configuration is sent to the second communication device. The resource pool configuration method in this embodiment further includes:

Step 102: The first communications device sends scheduling information including configuration information of the resource pool to the second communications device in a dynamic or semi-static manner.

In an embodiment of the present embodiment, the first communications device may send the scheduling information to the second communications device in a dynamic manner, that is, the first communications device configures the resource pool in real time (optional, At the same time, the CP length used by each resource unit in the resource pool is configured, and the scheduling information is sent in real time, so that the second communications device can select the resource unit from the resource pool configured by the first communications device according to the scheduling information. Perform D2D services, ad hoc network transmissions, or distributed communications. As the transmitting end of the second communication device, the data may be transmitted by using the selected resource unit, and as the receiving end of the second communication device, the data may be received on the selected resource. The details will be described below.

In another embodiment of the present embodiment, the first communications device may send the scheduling information to the second communications device in a semi-static manner, that is, the first communications device periodically configures the resource pool. Optionally, the length of the CP used by each resource unit in the resource pool is configured, and the scheduling information is periodically sent, so that the second communications device can select the resource unit from the resource pool according to the scheduling information in the period. Perform D2D service, ad hoc network transmission, or distributed communication; or select a resource unit from the resource pool for D2D service, ad hoc network transmission, or distributed communication within the period. Similarly, as the transmitting end of the second communication device, the data may be transmitted by using the selected resource unit, and as the receiving end of the second communication device, the data may be received on the selected resource unit. The details will be described below.

With the method of the present embodiment, good frequency domain and time domain diversity are provided to ensure the average performance of broadcast communication and discovery. The impact on cellular network service scheduling is small, and its flexibility is guaranteed as much as possible. The feasibility and effectiveness of energy detection or measurement are considered. Inter-carrier interference and interference between sub-channels caused by different CP lengths used by the transport entity are minimized.

Example 2

The embodiment of the present invention provides a resource pool configuration apparatus, which may be applied to a communication device, and the communication device may be a base station or a user equipment. The principle of solving the problem by the resource pool configuration apparatus is similar to the method of Embodiment 1. Therefore, the specific implementation can refer to the implementation of the method of Embodiment 1, and the same content is not repeated.

FIG. 6 is a schematic diagram of the configuration of the resource pool configuration apparatus. As shown in FIG. 6, the resource pool configuration apparatus 600 includes: a configuration unit 601 and a sending unit 602, wherein the function of the configuration unit 601 and the sending unit 602 The functions can be integrated into one functional module, and this embodiment is not limited thereto.

In this embodiment, the configuration unit 601 configures a resource pool for the other communication devices, where, in a period and bandwidth of the resource pool, each resource unit does not occupy all physical resource blocks (PRBs) in the frequency domain; And/or, in one of the resource pools, the cyclic prefix (CP) used by each resource unit has the same length.

In this embodiment, the sending unit 602 sends the scheduling information including the configuration information of the resource pool to the other communication device in a dynamic or semi-static manner.

In one embodiment, within one of the resource pools, there is at least one transmission time interval (ΤΉ) offset between any two resource units; and/or, within one of the resource pools, any two resource units There is at least one physical resource block (PRB) offset between them.

In another embodiment, at least two resource units have an offset of at least one transmission time interval (ΤΉ) in one of the resource pools; and/or, in one of the resource pools, at least two There is at least one physical resource block (PRB) offset between resource units.

In another embodiment, the frequency domain locations of the complements of the union of all resource elements within the period and bandwidth of a resource pool are distributed over all PRBs of the bandwidth occupied by the resource pool.

In this embodiment, the resource pool may be used for D2D service and/or ad hoc network transmission and/or distributed communication, and the resource pool configuration apparatus may be applied to a communication device performing D2D service and/or performing ad hoc network transmission. Communication device and/or communication device for distributed communication.

With the apparatus of the present embodiment, good frequency domain and time domain diversity are provided to ensure the average performance of broadcast communication and discovery. The impact on cellular network service scheduling is small, and its flexibility is guaranteed as much as possible. The feasibility and effectiveness of energy detection or measurement are considered. Inter-carrier interference and interference between sub-channels caused by different CP lengths used by the transport entity are minimized.

Example 3

The embodiment of the invention further provides a communication device, wherein the communication device comprises the resource pool configuration device described in Embodiment 2.

In this embodiment, the communication device may be a base station or a user equipment, which will be separately described below. FIG. 7 is a schematic diagram of a structure of a base station according to an embodiment of the present invention. As shown in FIG. 7, the base station 700 can include: a central processing unit (CPU) 701 and a memory 702; the memory 702 is coupled to the central processing unit 701. Wherein the memory 702 can store various data; in addition, a program for information processing is stored, and the program is executed under the control of the central processing unit 701 to receive various information transmitted by the user equipment, and send a request letter to the user equipment. Interest.

In one embodiment, the functionality of the resource pool configuration device can be integrated into the central processor 701. In another embodiment, the resource pool configuration device may be configured separately from the central processing unit 701. For example, the resource pool configuration device may be configured as a chip connected to the central processing unit 701, and the resource pool configuration may be implemented by the control of the central processing unit 701. The function of the device.

In addition, as shown in FIG. 7, the base station 700 may further include: a transceiver 703, an antenna 704, and the like; wherein the functions of the above components are similar to the prior art, and details are not described herein again. It should be noted that the base station 700 does not have to include all of the components shown in FIG. 7; in addition, the base station 700 may also include components not shown in FIG. 7, and reference may be made to the prior art.

FIG. 8 is a schematic structural diagram of a user equipment according to an embodiment of the present invention. As shown in FIG. 8, the user equipment 800 can include a central processing unit 801 and a memory 802; the memory 802 is coupled to the central processing unit 801. It is worth noting that the figure is exemplary; other types of structures may be used in addition to or in place of the structure to implement telecommunications functions or other functions.

In one embodiment, the functionality of the resource pool configuration device can be integrated into the central processor 801. In another embodiment, the resource pool configuration device may be configured separately from the central processing unit 801. For example, the resource pool configuration device may be configured as a chip connected to the central processing unit 801, and the resource pool configuration is implemented by the control of the central processing unit 801. The function of the device.

As shown in FIG. 8, the user equipment 800 may further include: a communication module 803, an input unit 804, an audio processing unit 805, a display 806, and a power source 807. It should be noted that the user equipment 800 does not necessarily include all of the components shown in FIG. 8. Further, the user equipment 800 may also include components not shown in FIG. 8, and reference may be made to the prior art.

As shown in FIG. 8, central processor 801, also sometimes referred to as a controller or operational control, may include a microprocessor or other processor device and/or logic device that receives input and controls each of user devices 800. The operation of the part.

The memory 802 can be, for example, one or more of a buffer, a flash memory, a hard drive, a removable medium, a volatile memory, a non-volatile memory, or other suitable device. The above configuration-related information can be stored, and a program for executing the related information can be stored. And the central processing unit 801 can execute the program stored in the memory 802 to implement information storage or processing and the like. The functions of other components are similar to those of the existing ones and will not be described here. The various components of user device 800 can be implemented by dedicated hardware, firmware, software, or a combination thereof, without bias It is within the scope of the invention.

In this embodiment, the central processing units 701 and 801 can be configured to: configure a resource pool for other communication devices, where each resource unit does not occupy the time domain in the frequency domain within the period and bandwidth of one of the resource pools All physical resource blocks (PRBs); and/or, within one of the resource pools, each resource unit uses the same cyclic prefix (CP).

Optionally, the central processing units 701 and 801 are further configured to: send scheduling information including the resource pool to the other communications device in a dynamic or semi-static manner.

Optionally, the resource pool is configured to: have an offset of at least one transmission time interval (ΤΉ) between any two resource units in one of the resource pools; and/or, in one of the resource pools, There is at least one physical resource block (PRB) offset between any two resource elements.

Optionally, the resource pool is configured to: have at least one transmission time interval (ΤΉ) offset between at least two resource units in one of the resource pools; and/or, in one of the resource pools , there is at least one physical resource block (PRB) offset between at least two resource units.

Optionally, the resource pool is configured to: a frequency domain location of the complement of the union of all resource units within a period and a bandwidth of a resource pool is distributed on all PRBs of the bandwidth occupied by the resource pool.

The resource elements in the resource pool can be used for D2D service and/or ad hoc network transmission and/or distributed communication.

With the communication device of the present embodiment, good frequency domain and time domain diversity are provided to ensure the average performance of broadcast communication and discovery. The impact on cellular network service scheduling is small, and its flexibility is guaranteed as much as possible. The feasibility and effectiveness of energy detection or measurement are considered. Inter-carrier interference caused by different CP lengths used by the transmitting entity and interference between sub-channels are minimized.

Example 4

The embodiment of the invention provides a resource selection method, which can be applied to a base station or a user equipment. In the following description, it is collectively referred to as a second communication device. The second communication device corresponds to the first communication device of Embodiment 1, and the description of the same portions will not be repeated. FIG. 9 is a flow chart of the resource selection method of the embodiment. Referring to FIG. 9, the method includes:

Step 901: The second communications device receives scheduling information including a resource pool configured by the first communications device. Step 902: The second communications device selects a resource unit from the resource pool to schedule transmission of its data or Listening on the selected resource unit in the resource pool to receive data. In this embodiment, in a period and a bandwidth of the resource pool, each resource unit does not occupy all physical resource blocks (PRBs) in the frequency domain; and/or, in one of the resource pools, each resource The cyclic prefix (CP) used by the unit is the same length.

Here, the structure, configuration, and advantages of the resource pool have been described in detail in Embodiment 1, and the contents thereof are incorporated herein, and the description is omitted here.

In this embodiment, the second communication device can be used for D2D service and/or ad hoc network transmission and/or distributed communication.

In one embodiment, as a transmitting end of a D2D service and/or ad hoc network transmission and/or distributed communication, the second communication device may select a resource unit from the configured resource pool to schedule transmission of its data. As described, it may be selected according to scheduling information or may be selected autonomously.

In one embodiment, as a receiving end of a D2D service and/or ad hoc network transmission and/or distributed communication, the second communication device can listen on a resource unit selected from within the resource pool to receive data. As described above, it may listen on the configured resource unit according to the scheduling information, or may independently select the resource unit to listen to receive data.

In this embodiment, as described above, if the scheduling information received by the second communications device further includes the configuration of the CP length used by each resource unit in the resource pool, and the CP length used by each resource unit. If the second communication device is the transmitting end, the CP length can be directly obtained, and the receiving end can use the CP length as a hypothesis, thereby improving the receiving efficiency. Moreover, since the CP lengths used by the resource elements are the same, the destruction of the frequency domain orthogonality or the inter-carrier interference caused by different CP lengths between the resource elements in the same resource pool is also prevented.

Example 5

The embodiment of the present invention provides a resource selection device, which may be applied to a communication device, and the communication device may be a base station or a user device. The principle of solving the problem by the resource pool configuration device is similar to that of Embodiment 4. Therefore, the specific implementation can refer to the implementation of the method of Embodiment 4, and the same content is not repeated. 10 is a schematic diagram of the composition of the device. As shown in FIG. 10, the device 1000 includes: a receiving unit 1001 and a communication unit 1002, where

The receiving unit 1001 receives scheduling information including a resource pool configured by the other communication device for the communication device.

The communication unit 1002 selects a resource unit from the resource pool to schedule transmission of data of the communication device or listens on a resource unit selected from the resource pool to receive data.

In this embodiment, in a period and a bandwidth of the resource pool, each resource unit does not occupy all physical resource blocks (PRBs) in the frequency domain; and/or, in one of the resource pools, each resource The cyclic prefix (CP) used by the unit is the same length.

In this embodiment, the communication unit 1002 selects and/or autonomously selects according to the scheduling information when selecting a resource unit from the resource pool to schedule transmission of its data.

In this embodiment, the structure, configuration, and advantages of the resource pool have been described in detail in Embodiment 1, and the content thereof is incorporated herein, and details are not described herein again.

In this embodiment, as described above, the resource pool may be used for D2D service and/or ad hoc network transmission and/or distributed communication. Accordingly, the resource selection device may be applied to a communication device that performs D2D service and / or a communication device that performs ad hoc network transmission and/or a communication device that performs distributed communication.

Example 6

The embodiment of the invention further provides a communication device, wherein the communication device comprises the resource selection device described in Embodiment 5.

In this embodiment, the communication device may be a base station or a user equipment, which will be separately described below. FIG. 11 is a schematic diagram of a structure of a base station according to an embodiment of the present invention. As shown in FIG. 11, the base station 1100 can include: a central processing unit (CPU) 1101 and a memory 1102; the memory 1102 is coupled to the central processing unit 1101. The memory 1102 can store various data; in addition, a program for information processing is stored, and the program is executed under the control of the central processing unit 1101 to receive various information transmitted by the user equipment and to transmit the request information to the user equipment. In one embodiment, the functionality of the resource selection device can be integrated into the central processor 1101. In another embodiment, the resource selection device may be configured separately from the central processing unit 1101. For example, the resource selection device may be configured as a chip connected to the central processing unit 1101, and the function of the resource selection device is implemented by the control of the central processing unit 1101. .

In addition, as shown in FIG. 11, the base station 1100 may further include: a transceiver 1103, an antenna 1104, and the like; wherein the functions of the foregoing components are similar to the prior art, and details are not described herein again. It should be noted that the base station 1100 does not have to include all the components shown in FIG. 11; in addition, the base station 1100 may further include components not shown in FIG. 11, and reference may be made to the prior art.

FIG. 12 is a schematic structural diagram of a user equipment according to an embodiment of the present invention. As shown in FIG. 12, the user equipment 1200 can include a central processing unit 1201 and a memory 1202; the memory 1202 is coupled to the central processing unit 1201. It should be noted that the figure is exemplary; other types of structures may be used in addition to or in place of the structure to implement telecommunications functions or other functions.

In one embodiment, the functionality of the resource selection device can be integrated into the central processor 1201. In another embodiment, the resource selection device may be configured separately from the central processing unit 1201. For example, the resource selection device may be configured as a chip connected to the central processing unit 1201, and the function of the resource selection device is implemented by the control of the central processing unit 1201. .

As shown in FIG. 12, the user equipment 1200 may further include: a communication module 1203, an input unit 1204, an audio processing unit 1205, a display 1206, and a power source 1207. It should be noted that the user equipment 1200 does not have to include all of the components shown in FIG. 12; in addition, the user equipment 1200 may also include components not shown in FIG. 12, and reference may be made to the prior art.

As shown in FIG. 12, central processor 1201, also sometimes referred to as a controller or operational control, may include a microprocessor or other processor device and/or logic device that receives input and controls each of user devices 1200. The operation of the part.

The memory 1202 can be, for example, one or more of a buffer, a flash memory, a hard drive, a removable medium, a volatile memory, a non-volatile memory, or other suitable device. The above configuration-related information can be stored, and a program for executing the related information can be stored. And the central processing unit 1201 can execute the program stored in the memory 1202 to implement information storage or processing and the like. The functions of other components are similar to those of the existing ones and will not be described here. The various components of user device 1200 may be implemented by special purpose hardware, firmware, software, or a combination thereof without departing from the scope of the invention. In this embodiment, the central processing units 1101 and 1201 may be configured to: receive scheduling information including a resource pool configured by the other communication device for the communication device; select a resource unit from the resource pool to schedule transmission of the data thereof Or listening on the resource unit selected from the resource pool to receive data; wherein, in a period and bandwidth of the resource pool, each resource unit does not occupy all physical resource blocks (PRBs) in the frequency domain; And/or, in one of the resource pools, the cyclic prefix (CP) used by each resource unit has the same length.

Optionally, the resource pool is configured to: a frequency domain location of a complement of all resource units within a period and a bandwidth of a resource pool (that is, all resource units in the resource pool) is distributed in the The resource pool occupies all the PRBs of bandwidth.

Optionally, the central processing units 1101 and 1201 may be configured to: select and/or autonomously select according to the scheduling information when selecting a resource unit from the resource pool to schedule transmission of data of the communication device.

Optionally, the resource pool is configured to: be used for D2D service and/or ad hoc network transmission and/or distributed communication.

Example 7

The embodiment of the present invention further provides a communication system, and FIG. 13 is a schematic diagram of a topology of the communication system. As shown in FIG. 13, the communication system 1300 includes: a first communication device 1301 and a second communication device 1302. In this embodiment, the first communication device 1301 is a base station, and the second communication device 1302 is a user equipment. However, as described above, the embodiment of the present invention is not limited thereto, and the first communication device 1301 is also used. It may be a user equipment, and the second communication device 1302 may also be a base station.

In this embodiment, the first communication device 1301 is configured to: configure the second communication device 1302 a resource pool, wherein, within a period and a bandwidth of the resource pool, each resource unit does not occupy all physical resource blocks (PRBs) in the frequency domain; and/or, in one of the resource pools, each resource unit The cyclic prefix (CP) used is the same length. The second communication device 1302 is configured to: receive scheduling information including a resource pool configured by the first communication device 1301; select a resource unit from the resource pool to schedule transmission of data thereof or from the resource pool Listening on the selected resource unit to receive data.

In this embodiment, the first communication device may be the communication device as described in Embodiment 3, and the second communication device may be the communication device as described in Embodiment 6. Since the first communication device and the second communication device have been described in detail in Embodiment 3 and Embodiment 6, the contents thereof are incorporated herein, and details are not described herein again.

In this embodiment, the first communication device 1301 and the second communication device 1302 may be one, or may be two or more, depending on network conditions, and the embodiment is not limited thereto.

With the communication system of the present embodiment, good frequency domain and time domain diversity are provided to ensure the average performance of broadcast communication and discovery. The impact on cellular network service scheduling is small, and its flexibility is guaranteed as much as possible. The feasibility and effectiveness of energy detection or measurement are considered. Inter-carrier interference caused by different CP lengths used by the transmitting entity and interference between sub-channels are minimized. The embodiment of the present invention further provides a computer readable program, wherein the program causes a computer to execute the embodiment 1 in the resource pool configuration device or the communication device when the program is executed in a resource pool configuration device or a communication device The resource pool configuration method.

The embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the computer to execute the resource pool configuration method described in Embodiment 1 in a resource pool configuration device or a communication device.

An embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a resource selection device or a communication device, the program causes a computer to execute the method described in Embodiment 4 in the resource selection device or communication device Resource selection method.

The embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the computer to execute the resource selection method described in Embodiment 4 in a resource selection device or a communication device. The above apparatus and method of the present invention may be implemented by hardware, or may be implemented by hardware in combination with software. The present invention relates to a computer readable program capable of enabling a logic component when the program is executed by a logic component The apparatus or components described above, or the logic components, implement the various methods or steps described above. Logic components such as field programmable logic components, microprocessors, processors used in computers, and the like. The present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.

The present invention has been described in connection with the specific embodiments thereof, and it should be understood by those skilled in the art that these descriptions are illustrative and not restrictive. A person skilled in the art can make various modifications and changes to the invention in accordance with the spirit and the principles of the invention, which are also within the scope of the invention.

Claims

claims

1. A resource pool configuration device, which is applied to communication equipment, wherein the device includes: a configuration unit, which configures resource pools for other communication devices, wherein, within the period and bandwidth of one of the resource pools, each resource The unit does not occupy all physical resource blocks (PRB) in the time-frequency domain; and/or, within one of the resource pools, the length of the cyclic prefix (CP) used by each resource unit is the same.

2. The device according to claim 1, wherein the device further includes:

A sending unit that sends the scheduling information including the resource pool to the other communication devices in a dynamic or semi-static manner.

3. The device according to claim 1, wherein,

Within one of the resource pools, there is an offset of at least one transmission time interval (ΤΉ) between any two resource units; and/or

Within one of the resource pools, there is at least one physical resource block (PRB) offset between any two resource units.

4. The device according to claim 1, wherein,

Within one of the resource pools, there is an offset of at least one transmission time interval (ΤΉ) between at least two resource units; and/or

Within one of the resource pools, there is an offset of at least one physical resource block (PRB) between at least two resource units.

5. The device according to claim 1, wherein,

The frequency domain position of the complement of the union of all resource units within the period and bandwidth of a resource pool is distributed over all PRBs in the bandwidth occupied by the resource pool.

6. The device according to claim 1, wherein the resource pool is used for D2D services and/or ad hoc network transmission and/or distributed communication, and the device is applied to communication equipment for D2D services and/or Communication equipment for ad hoc network transmission and/or communication equipment for distributed communication.

7. A resource selection device, which is applied to communication equipment, wherein the device includes:

A receiving unit, which receives scheduling information including a resource pool configured by other communication devices for the communication device; a communication unit, which selects a resource unit from the resource pool to schedule the transmission of data of the communication device or in the resource pool from the resource Listen on the selected resource unit in the pool to receive data; Wherein, within the period and bandwidth of one of the resource pools, each resource unit does not occupy all physical resource blocks (PRBs) in the time and frequency domain; and/or, within one of the resource pools, each resource unit uses The length of the cyclic prefix (CP) is the same.

8. The device according to claim 7, wherein,

Within one of the resource pools, there is an offset of at least one physical resource block (PRB) between any two resource units.

9. The device according to claim 7, wherein,

10. The device according to claim 7, wherein,

11. The device according to claim 7, wherein when the communication unit selects a resource unit from the resource pool to schedule the transmission of its data, the communication unit selects and/or autonomously selects according to the scheduling information.

12. The device according to claim 7, wherein the resource pool is used for D2D services and/or ad hoc network transmission and/or distributed communication, and the device is applied to communication equipment for D2D services and/or Communication equipment for ad hoc network transmission and/or communication equipment for distributed communication.

13. A communication system, the communication system includes a first communication device and a second communication device, wherein the first communication device is configured to: configure a resource pool for the second communication device, wherein, in a Within the period and bandwidth of the resource pool, all physical resource blocks (PRBs) in the frequency domain when each resource unit is not fully occupied; and/or, within one of the resource pools, the cyclic prefix (CP) used by each resource unit have the same length; the second communication device is configured to: receive scheduling information including the resource pool configured by the first communication device; select a resource unit from the resource pool to schedule the transmission of its data or select the Listen on the selected resource unit in the resource pool to receive data.