WO2015176517A1

WO2015176517A1 - Device-to-device resource configuration method, network device, and user equipment

Info

Publication number: WO2015176517A1
Application number: PCT/CN2014/092249
Authority: WO
Inventors: 黄双红; 吴栓栓; 袁弋非; 王文焕
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-05-23
Filing date: 2014-11-26
Publication date: 2015-11-26
Also published as: CN105101429A

Abstract

Disclosed are a device-to-device (D2D) resource configuration method, a D2D resource processing method, a network device, and a user equipment. The method comprises: a network side determines a D2D resource configuration parameter; and inform a user equipment of a part or the whole of the D2D resource configuration parameter by means of indication signaling and/or an indication signal, the user equipment using the D2D resource configuration parameter to acquire a D2D resource.

Description

Device-to-device resource configuration method, network device, and user equipment

Technical field

The present invention relates to a resource configuration technology in the field of wireless communication, and in particular, to a device-to-device (D2D) resource configuration method, a device-to-device resource processing method, a network device, and a user equipment.

Background technique

In the process of implementing the technical solutions of the embodiments of the present application, at least the following technical problems exist in the related technologies:

In a cellular communication system, when there is a service transmission between two user equipments (UE, User Equipment), for example, the service data of UE1 to UE2 is first transmitted to the base station of the cell where UE1 is located through an air interface, and the base station is represented by a Base Station. Or the Node B, or the evolved Node B, the base station transmits the user data to the base station of the cell where the UE2 is located through the core network, and the base station transmits the service data to the UE2 through the air interface. The service data transmission from UE2 to UE1 adopts a similar processing flow. As shown in FIG. 1a, when UE1 and UE2 are located in the same cell, although two UEs are covered by the cell of the same base station, data transmission still needs to be transited through the core network, and one data transmission still consumes two radio spectrum resources. .

It can be seen that if UE1 and UE2 are located in the same cell and are close together, the above-described cellular communication method is obviously not optimal. In fact, with the diversification of mobile communication services, for example, the popularity of applications such as social networks and electronic payment in wireless communication systems, the demand for service transmission between close-range users is increasing. Therefore, D2D communication mode has received increasing attention. As shown in FIG. 1b, D2D refers to that the service data is not forwarded by the base station and the core network, and is directly transmitted by the source UE to the target UE through an air interface, and may also be referred to as a ProSe (Proximity Service). For users of short-range communication, D2D not only saves wireless spectrum resources, but And reduce the data transmission pressure of the core network.

D2D technology usually includes D2D discovery technology and D2D communication technology. D2D discovery technology can realize mutual discovery between D2D communication user equipments (UEs). For D2D communication devices, mutual discovery is referred to herein as D2D device discovery, or D2D. Discovery; D2D communication technology can realize that some or all communication data between D2D user equipments can communicate directly without going through the network infrastructure. The D2D user equipment first needs to know the resources available for D2D signal transmission in the system resources, so as to transmit or receive D2D signals on the effective resources, while avoiding resource conflicts with the user equipment of the cellular system and affecting the performance of the cellular system. In order to enable the D2D UE to accurately know the resources transmitted and/or received by the D2D signal, it does not affect the cellular system, which requires proper and efficient configuration of the D2D resources, and setting a certain configuration indication scheme. However, there is no effective solution in the related art.

Summary of the invention

In view of this, the embodiment of the present invention is to provide a D2D resource configuration method, a D2D resource processing method, a network device, and a user equipment, which at least implements a reasonable and effective configuration of D2D resources, so that the D2D UE can accurately know. The resources transmitted and received by the D2D signal do not affect the cellular system.

The technical solution of the embodiment of the present invention is implemented as follows:

A device-to-device resource configuration method, the method comprising:

The network side determines device to device D2D resource configuration parameters;

Part or all of the D2D resource configuration parameter is indicated to the user equipment by means of signaling and/or signaling; and the D2D resource configuration parameter is used by the user equipment to obtain the D2D resource.

Preferably, the D2D resource includes: a radio resource that the D2D user equipment can use to send or receive a D2D signal;

The content of the D2D resource includes one or more of the following contents:

a resource corresponding to the first resource allocation mode and/or a resource corresponding to the second resource allocation mode;

User equipment specific resources corresponding to the first resource allocation manner and/or the second resource allocation manner.

Preferably, the manner in which the network side determines the D2D resource configuration parameter includes one or more of the following manners:

To describe a parameter expression manner of the D2D resource;

Declaring a combination of a parameter set describing the D2D resource and an index corresponding to the parameter set;

The manner in which the parameter expression manner, and/or the parameter set and the index combination expression manner are mapped by a formula is used.

Preferably, the D2D resource configuration parameter includes: a configuration parameter content corresponding to the D2D resource;

The D2D resource configuration parameter content includes one or more of the following contents:

a D2D resource configuration parameter including a configuration parameter corresponding to the first resource allocation mode and/or a configuration parameter corresponding to the second resource allocation mode;

A configuration parameter of the user equipment-specific resource corresponding to the first resource allocation mode and/or the second resource allocation mode.

Preferably, the D2D resource configuration parameter includes one or more of the following parameters:

The period of the D2D resource;

Frequency domain resource bandwidth of D2D resources;

The radio frame number SFN offset corresponding to the start position of the D2D resource;

The number of D2D subframes in the D2D resource;

a radio frame position corresponding to the D2D subframe in the D2D resource;

D2D subframe position within the D2D resource;

a bit bit bitmap for indicating the position of the D2D subframe;

The number of resource groups in the D2D resource;

The number of radio frames is included in the D2D resource group;

a bit bit bitmap indicating a D2D subframe position in the D2D resource group;

D2D resource group offset, discovery resource group interval;

The hopping mode of the user equipment dedicated resource;

Or the configuration parameter of the discovery resource area further includes an index corresponding to the combination of one or more parameters.

Preferably, the configuration parameter corresponding to the first resource allocation manner is independent of the configuration parameter corresponding to the second allocation mode, or some of the parameters are the same.

Preferably, the configuration parameter of the user equipment-specific resource corresponding to the first resource allocation manner and/or the second resource allocation manner includes one or more of the following parameters:

The initial location or all locations of the user equipment specific resources corresponding to the first resource allocation manner and/or the second resource allocation manner;

a hopping manner of the user equipment-specific resource corresponding to the first resource allocation manner and/or the second resource allocation manner;

Alternatively, the configuration parameter of the user equipment-specific resource corresponding to the first resource allocation manner and/or the second resource allocation manner further includes an index corresponding to the combination of one or more parameters.

Preferably, the expression manner used by the initial location of the user equipment-specific resource corresponding to the first resource allocation manner and/or the second resource allocation manner includes any one of the following manners:

And using a time domain parameter and a frequency domain parameter to respectively indicate a time domain and a frequency domain location of the initial location of the user equipment dedicated resource of the first resource allocation manner and/or the second resource allocation manner;

Using a parameter to indicate an index number of the initial location of the user equipment-specific resource in the D2D resource, the index number and the first resource allocation manner in the D2D resource and/or the user equipment-specific discovery resource in the second resource allocation manner The time domain and the frequency domain location have corresponding mapping relationships.

Preferably, the indicating in the manner of indicating signaling and/or signaling includes one or more of the following manners:

Dedicating the D2D resource configuration parameter by using system information or RRC common signaling;

The RRC dedicated signaling is sent to indicate the first resource allocation mode and/or the second resource allocation mode. Configuration parameters of the corresponding user equipment-specific resources.

Preferably, the indicating is performed in a manner indicating signaling and/or a signal, and further comprising an indication for the D2D resource configuration parameter between adjacent different cells;

The indication for the D2D resource configuration parameter between adjacent different cells includes any one of the following:

For the neighboring cell of the synchronization network, the neighboring cell configures the D2D resource according to the same parameter, and the D2D resource of the second cell is determined by the D2D resource configuration parameter of the first cell, so that the user equipment is based on the D2D of the second cell. The resource receives the D2D signal of the second cell;

For a neighboring cell of the non-synchronous network, the neighboring cell configures the D2D resource according to the same parameter, and determines, according to the indication of the second cell, the resource configuration parameter of the first cell, and the timing reference of the second cell. The D2D resource of the second cell, so that the user equipment receives the D2D signal of the second cell according to the D2D resource of the second cell;

The first cell and the second cell are mutually adjacent to the second cell, where the first cell is a cell where the user equipment resides, and the second cell is a neighbor of the first cell. Community.

Preferably, the indication manner of the D2D resource configuration parameter between the adjacent different cells includes any one of the following:

The base station to which the second cell belongs in the neighboring cell sends the cell identifier ID and the radio frame number corresponding to the second cell to the base station to which the first cell belongs, and the base station to which the first cell belongs sends the cell identifier ID and the radio frame number. The user equipment in the first cell is forwarded by the user equipment in the second cell, and the user equipment in the first cell receives the forwarded radio frame number.

A network device, the network device comprising:

a first determining unit, configured to determine a device-to-device D2D resource configuration parameter;

The indication sending unit is configured to indicate part or all of the D2D resource configuration parameter to the user equipment by means of indication signaling and/or signaling; and the D2D resource configuration parameter is used by the user equipment to obtain the D2D resource.

The content of the D2D resource includes one or more of the following contents:

a resource corresponding to the first resource allocation mode and/or the second resource allocation mode;

To describe a parameter expression manner of the D2D resource;

The period of the D2D resource;

Frequency domain resource bandwidth of D2D resources;

The number of D2D subframes in the D2D resource;

a radio frame position corresponding to the D2D subframe in the D2D resource;

D2D subframe position within the D2D resource;

a bit bit bitmap for indicating the position of the D2D subframe;

The number of resource groups in the D2D resource;

The number of radio frames is included in the D2D resource group;

a bit bit bitmap indicating a D2D subframe position in the D2D resource group;

D2D resource group offset, discovery resource group interval;

The hopping mode of the user equipment dedicated resource;

Using a parameter to indicate an index number of the initial location of the user equipment-specific resource in the time domain and the frequency domain in the D2D resource, the index number and the first resource allocation manner and/or the second resource allocation manner in the D2D resource The location of the user equipment-specific discovery resource has a corresponding mapping relationship.

Preferably, the indication sending unit is further configured to indicate in a manner of indicating signaling and/or a signal, including one or more of the following manners:

The configuration parameter of the user equipment-specific resource corresponding to the first resource allocation mode and/or the second resource allocation mode is sent by the RRC dedicated signaling.

Preferably, the indication sending unit is further configured to indicate in a manner indicating signaling and/or a signal, and further includes an indication for the D2D resource configuration parameter between adjacent different cells;

The first determining unit and the indication sending unit may adopt a central portion when performing processing A CPU (Central Processing Unit), a Digital Signal Processor (DSP), or a Field-Programmable Gate Array (FPGA).

A device-to-device resource processing method, the method comprising:

The user equipment obtains a D2D resource configuration parameter by receiving an indication on the network side;

The user equipment determines the D2D resource according to the D2D resource configuration parameter.

A user equipment, the user equipment comprising:

An obtaining unit, configured to obtain a D2D resource configuration parameter by receiving an indication on the network side;

The second determining unit is configured to determine the D2D resource according to the D2D resource configuration parameter.

The acquiring unit and the second determining unit may use a central processing unit (CPU), a digital signal processor (DSP, Digital Singnal Processor), or a programmable logic array (FPGA, Field-) when performing processing. Programmable Gate Array) implementation.

The resource configuration method of the embodiment of the present invention includes: determining, by the network side, the device-to-device D2D resource configuration parameter; and indicating part or all of the D2D resource configuration parameter to the user equipment by using indication signaling and/or signaling manner; the D2D resource The configuration parameters are used by the user equipment to obtain D2D resources. According to the embodiment of the present invention, part or all of the D2D resource configuration parameter can be indicated to the user equipment by using the indication signaling and/or the signal mode; the D2D resource configuration parameter is used by the user equipment to obtain the D2D resource, so that the user equipment can Knowing accurately the D2D resources sent and received by the D2D discovery signal does not affect the cellular system.

DRAWINGS

1a-1b are schematic diagrams of cellular communication and D2D communication of UEs located in the same base station cell in the related art;

2 is a schematic diagram of a radio resource structure in the related art;

3 is a schematic diagram of a cellular network deployment in the related art;

4 is a flowchart of implementing a method according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a network device according to an embodiment of the present invention; FIG.

FIG. 6 is a flowchart of implementing a method according to an embodiment of the present invention;

FIG. 7 is a structural diagram showing the structure of a user equipment according to an embodiment of the present invention;

8 is an example of a radio frame position configuration in a discovery resource period according to Embodiment 1 of the present invention;

FIG. 9 is an example of configuration of a discovery resource region parameter according to Embodiment 1 of the present invention; FIG.

10 is an example of a mapping relationship between user equipment-specific discovery resource locations of a second discovery type according to Embodiment 2 of the present invention;

11 is an example of a method for mapping a user equipment-specific discovery resource location of a second discovery type according to the second embodiment of the present invention;

FIG. 12 is a diagram showing an example of indicating resource allocation parameters between cells in an interactive manner according to Embodiment 3 of the present invention; FIG.

FIG. 13 is a diagram showing an example of resource allocation parameters between cells in a UE forwarding manner according to Embodiment 3 of the present invention.

detailed description

The implementation of the technical solution will be further described in detail below with reference to the accompanying drawings.

The embodiments of the present invention mainly include the following contents:

The resource configuration method of the D2D in the embodiment of the present invention, as shown in FIG. 4, includes:

Step 101: The network side determines a D2D resource configuration parameter.

Step 102: The part or all of the D2D resource configuration parameter is indicated to the user equipment by using indication signaling and/or signaling. The D2D resource configuration parameter is used by the user equipment to obtain the D2D resource.

In a preferred embodiment of the present invention, the D2D resource includes: a radio resource that the D2D user equipment can use to send or receive a D2D signal;

The content of the D2D resource includes one or more of the following contents:

For example, the D2D resource refers to a radio resource that the D2D user equipment can use to send or receive a D2D discovery signal, including some or all of the following:

The discovery resource region includes a discovery resource region of the first discovery type Type 1 and/or a discovery resource region of the second discovery type Type 2B;

The second discovery type of user equipment-specific discovery resources of type 2B.

It should be noted that the D2D UE includes two types, namely, the first type of discovery type Type 1, and the second type of discovery type, Type 2B, and subsequently the first type of discovery type Type 1 and the second type of discovery type Type 2B. The D2D UEs are respectively described, and are not described here.

Here, the Type 1 refers to a standard discussion on D2D of the 3GPP (3GPP, 3rd Generation Partnership Project) Long Term Evolution (LTE)/Advanced Long Term Evolution (LTE-A) technology. In the Type 1 type discovery, the discovery resource area is also referred to as a resource pool in the standard discussion of D2D. The discovery resource area of Type 1 may also be referred to as a Type 1 resource pool or a Type 1 discovery resource area or a Type 1 resource pool. The user equipment of Type 1 selects a resource in the discovery resource area of Type 1 for transmitting a discovery signal, and may randomly select a resource to send a discovery signal.

Here, the Type 2B refers to a standard discussion on D2D of the 3GPP (3GPP, 3rd Generation Partnership Project) Long Term Evolution (LTE)/Advanced Long Term Evolution (LTE-A) technology. In the Type 2B type discovery, the discovery resource area is also referred to as a resource pool in the standard discussion of D2D. The discovery resource area of the Type 2B may also be referred to as a Type 2B resource pool or a Type 2B discovery resource area or a Type 2B resource pool. The Type 2B user equipment transmits a discovery signal in the Type 2B discovery resource area, and the base station specifies a dedicated resource for transmitting the discovery signal for each user equipment.

In a preferred implementation manner of the embodiment of the present invention, the network side determines the D2D resource allocation. The way to set parameters includes one or more of the following:

To describe a parameter expression manner of the D2D resource;

For example, the manner in which the network side determines the D2D resource configuration parameter includes one or more of the following methods:

Expressed in terms of radio resource parameters;

a way of expressing a combination of a radio resource parameter set and an index corresponding to the parameter set;

Partial wireless resource parameters are mapped by formula.

In a preferred embodiment of the present invention, the D2D resource configuration parameter includes: a configuration parameter content corresponding to the D2D resource;

For example, the D2D resource configuration parameter is a configuration parameter corresponding to the D2D discovery resource, and the D2D resource configuration parameter content includes one or more of the following contents:

The configuration parameters of the discovery resource region, including the configuration parameter of the discovery resource region of Type 1 and/or the configuration parameter of the discovery resource region of Type 2B;

Type 2B user equipment-specific configuration parameters for discovery resources.

In a preferred embodiment of the present invention, the D2D resource configuration parameter includes one or more of the following parameters:

The period of the D2D resource;

Frequency domain resource bandwidth of D2D resources;

The number of D2D subframes in the D2D resource;

a radio frame position corresponding to the D2D subframe in the D2D resource;

D2D subframe position within the D2D resource;

a bit bit bitmap for indicating the position of the D2D subframe;

The number of resource groups in the D2D resource;

The number of radio frames is included in the D2D resource group;

a bit bit bitmap indicating a D2D subframe position in the D2D resource group;

D2D resource group offset, discovery resource group interval;

The hopping mode of the user equipment dedicated resource;

For example, the configuration parameters of the discovery resource area include some or all of the following parameters:

Discovering the period of the resource area, discovering the frequency domain resource bandwidth of the resource area, discovering the radio frame number (SFN) offset corresponding to the start position of the resource area, discovering the number of subframes found in the resource area, and discovering the subframe corresponding to the discovery in the resource area. Position of the radio frame, find the location of the sub-frame in the resource area, indicate the bit bitmap of the sub-frame position, discover the number of resource groups, the number of radio frames in the discovery resource group, find the resource group offset, and discover the resource group interval. The hopping mode of the user equipment dedicated resource;

Or, it is an index corresponding to the combination of the above parameters.

In a preferred embodiment of the present invention, the configuration parameter corresponding to the first resource allocation mode and the configuration parameter corresponding to the second allocation mode are independent of each other, or some of the parameters are the same.

For example, the configuration parameter of the discovery resource area of Type 1 and the configuration parameter of the discovery resource area of Type 2B are independent of each other, or some of the parameters are the same.

In a preferred embodiment of the present invention, the configuration parameter corresponding to the first resource allocation mode and the configuration parameter corresponding to the second allocation mode may have multiple sets of different parameters at the same time, corresponding to different D2D resource regions.

For example, for Type 1 discovery, there are N sets of different configuration parameters, corresponding to N different resource areas, and different UEs may send D2D discovery signals in different resource areas.

In a preferred embodiment of the present invention, the configuration parameter of the user equipment-specific resource corresponding to the first resource allocation mode and/or the second resource allocation mode includes one or more of the following parameters:

For example, the configuration parameter of the user equipment-specific discovery resource of the Type 2B includes some or all of the following parameters:

The initial location or all locations of the user equipment-specific discovery resources of Type 2B, and the hopping mode of the user equipment-specific resources;

Or, it is an index corresponding to the combination of the above parameters.

In a preferred embodiment of the present invention, the expression used by the initial location of the user equipment-specific resource corresponding to the first resource allocation mode and/or the second resource allocation mode includes any one of the following methods:

Using a parameter to indicate that the initial location of the user equipment specific resource is within the D2D resource The index number, the index number has a mapping relationship corresponding to the time domain and the frequency domain location of the user resource-specific discovery resource in the first resource allocation mode and/or the second resource allocation mode in the D2D resource.

For example, the manner in which the initial location of the user equipment-specific discovery resource of the Type 2B is expressed includes one of the following methods:

The time domain parameter and the frequency domain parameter respectively indicate a time domain location of the initial location of the user equipment-specific discovery resource of the Type 2B, such as a radio frame number and a subframe number and a frequency domain location, such as a resource block location;

A parameter is used to indicate an index number of the initial location of the user equipment-specific discovery resource of the Type 2B in the discovery resource area, and the index number has a mapping corresponding to the location of the user equipment-specific discovery resource of the Type 2B in the discovery resource area. relationship.

In a preferred embodiment of the present invention, the indicating in the manner of indicating signaling and/or signaling includes one or more of the following manners:

For example, the configuration signaling includes the following:

Dedicating configuration parameters of the discovery resource area by using system information or RRC common signaling;

The configuration parameter of the user equipment-specific discovery resource of the second discovery type is sent by using RRC dedicated signaling.

In a preferred implementation manner of the embodiment of the present invention, the indication is performed in a manner of indicating signaling and/or a signal, and further includes an indication for the D2D resource configuration parameter between adjacent different cells;

For a neighboring cell of the non-synchronous network, the neighboring cell configures the D2D resource according to the same or different parameters, and is determined by the indication of the second cell and combined with the resource configuration parameter of the first cell and the timing reference of the second cell. The D2D resource of the second cell, so that the user equipment receives the D2D signal of the second cell according to the D2D resource of the second cell;

For example, the indication for discovering resource configuration between adjacent different cells includes:

For the neighboring cell of the synchronization network, the user equipment directly determines the discovery resource region of the neighboring cell according to the discovery resource configuration information of the current cell, and receives the discovery signal of the neighboring cell in the discovery resource region.

For a neighboring cell of the non-synchronous network, the user equipment determines the discovery resource region of the neighboring cell according to the indication of the neighboring cell and the discovery resource configuration information of the current cell, and receives the discovery signal of the neighboring cell in the discovery resource region.

In a preferred embodiment of the present invention, the indication manner of the D2D resource configuration parameter between the adjacent different cells includes any one of the following:

For example, the indication of the neighboring cell includes one of the following:

The base station to which the neighboring cell belongs to the small medium by using the information of the interaction cell ID and the radio frame number The base station of the area indicates, for the user equipment in the local cell, a configuration parameter of the discovery resource area of the first type of discovery or/and a configuration parameter of the discovery resource area of the second type of discovery;

The edge UE forwards the radio frame number to the neighboring user equipment, and indicates the configuration parameter of the discovery resource region of the first type of discovery or/and the configuration parameter of the discovery resource region of the second type of discovery for the neighboring user equipment.

In summary, in the embodiment of the present invention, part or all of the D2D resource configuration parameters may be indicated to the user equipment by using indication signaling and/or signaling manner; and the D2D resource configuration parameter is used by the user equipment to obtain the D2D resource. So that the user equipment can accurately know the D2D resources sent and received by the D2D discovery signal without affecting the cellular system.

As an example of the D2D discovery scenario, there is a problem that the D2D UE first needs to know the resource region available for D2D discovery in the system resource, and can send or detect the discovery signal on the valid resource. For the problem, the inventor of the present application analyzes in the process of implementing the technical solution of the embodiment of the present application: First, for both Type 1 and Type 2B D2 UEs, both types of D2D UEs need to know that the signal can be sent for discovery. And the received resource area, that is, the discovery resource pool; at the same time, for the Type 2B D2D UE, each D2D UE needs to know the corresponding dedicated resource for transmitting the discovery signal. Therefore, the solution proposed by the embodiment of the present invention is a D2D resource configuration scheme. In brief, the network side configures a resource pool and a UE-specific resource for the D2D UE according to a specified manner, and indicates the D2D UE by using a specified method. The D2D UE can be made aware of valid discovery resources and send or receive discovery signals on the effective resources, thereby realizing resource allocation for D2D discovery.

The network device of the embodiment of the present invention, as shown in FIG. 5, includes:

The first determining unit 11 is configured to determine a device-to-device D2D resource configuration parameter;

The indication sending unit 12 is configured to indicate part or all of the D2D resource configuration parameter to the user equipment by using indication signaling and/or signaling manner; the D2D resource configuration parameter is used by the user equipment to obtain the D2D resource.

The content of the D2D resource includes one or more of the following contents:

In a preferred embodiment of the present invention, the manner in which the network side determines the D2D resource configuration parameter includes one or more of the following manners:

To describe a parameter expression manner of the D2D resource;

The period of the D2D resource;

Frequency domain resource bandwidth of D2D resources;

The number of D2D subframes in the D2D resource;

a radio frame position corresponding to the D2D subframe in the D2D resource;

D2D subframe position within the D2D resource;

a bit bit bitmap for indicating the position of the D2D subframe;

The number of resource groups in the D2D resource;

The number of radio frames is included in the D2D resource group;

a bit bit bitmap indicating a D2D subframe position in the D2D resource group;

D2D resource group offset, discovery resource group interval;

The hopping mode of the user equipment dedicated resource;

Using the time domain parameter and the frequency domain parameter to indicate the first resource allocation mode and/or the second resource respectively Time domain and frequency domain location of the initial location of the user equipment dedicated resource of the source allocation mode;

In a preferred embodiment of the present invention, the indication sending unit is further configured to indicate in the manner of indicating signaling and/or signaling, including one or more of the following manners:

In a preferred embodiment of the present invention, the indication sending unit is further configured to indicate in a manner of indicating signaling and/or a signal, and further, configured to configure the D2D resource between adjacent different cells. An indication of the parameter;

For a neighboring cell of the non-synchronous network, the neighboring cell configures the D2D resource by the same parameter or different, and is determined by the indication of the second cell and combined with the resource configuration parameter of the first cell and the timing reference of the second cell. The D2D resource of the second cell, so that the user equipment receives the D2D signal of the second cell according to the D2D resource of the second cell;

The D2D resource processing method of the embodiment of the present invention, as shown in FIG. 6, includes:

Step 201: The user equipment obtains a D2D resource configuration parameter by receiving an indication on the network side.

Step 202: The user equipment determines the D2D resource according to the D2D resource configuration parameter.

After the step 202, the method may further include the step of: the user equipment performs transmission or reception of the communication signal according to the D2D resource.

In a preferred embodiment of the present invention, the communication signal includes: a D2D signal and/or a cellular system communication signal;

The D2D signal is transmitted or received at the D2D resource; the D2D signal includes: a D2D discovery signal and/or a D2D communication signal;

The cellular system communication signal cannot be transmitted or received at the D2D resource.

The user equipment of the embodiment of the present invention, as shown in FIG. 7, the user equipment includes:

The obtaining unit 21 is configured to obtain a D2D resource configuration parameter by receiving an indication on the network side;

The second determining unit 22 is configured to determine the D2D resource according to the D2D resource configuration parameter.

The user equipment may further include: a transmitting and receiving unit 23 configured to perform transmission or reception of a communication signal according to the D2D resource.

The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

The techniques described herein are applicable to cellular wireless communication systems or networks. Common cellular radio communication systems can be based on Code Division Multiplexing (CDMA) technology, Frequency Division Multiplexing (FDMA) technology, Orthogonal Frequency Division Multiple Access (OFDMA) technology. Single-carrier frequency division multiple access (SC-FDMA, Single Carrier-FDMA) technology, etc. For example, 3GPP (3GPP, 3rd Generation Partnership Project) Long Term Evolution (LTE)/Advanced Long Term Evolution (LTE-A, LTE-Advanced) cellular communication system downlink (or forward direction) Link) Based on OFDMA technology, the uplink (or reverse link) is based on SC-FDMA multiple access technology. In the future, it is possible to support hybrid multiple access technology on one link.

In an OFDMA/SC-FDMA system, a radio resource for communication is a form of time-frequency two-dimensional. For example, for an LTE/LTE-A system, uplink and downlink communication resources are divided in units of radio frames in the time direction, and each radio frame has a length of 10 ms, including There are 10 sub-frames of length 1 ms, each of which includes two slots of length 0.5 ms, as shown in FIG. According to the configuration of the Cyclic Prefix (CP), each time slot may include 6 or 7 OFDM or SC-FDM symbols.

In the frequency direction, resources are divided into subcarriers. In communication, the smallest unit of frequency domain resource allocation is a resource block (RB, Resource Block), and one physical resource block corresponding to a physical resource (PRB, Physical RB). ). A PRB contains 12 sub-carriers in the frequency domain, corresponding to one slot in the time domain. A resource corresponding to one subcarrier on each OFDM/SC-FDM symbol is referred to as a resource element (RE). Figure 2 Shown.

In the LTE/LTE-A cellular communication, the user equipment UE discovers the LTE network by detecting a synchronization signal (SS, Synchronization Signal). The synchronization signal includes a primary synchronization signal (PSS, Primary SS) and a secondary synchronization signal (SSS, Secondary SS). By detecting the synchronization signal, the UE obtains downlink frequency and time synchronization with the base station. Moreover, since the synchronization signal carries the physical cell identity, detecting the synchronization signal also means that the UE discovers the LTE/LTE-A cell.

On the uplink, when the UE has uplink data transmission, it is required to initiate random access (RA, Random Access) for uplink synchronization and establish a radio resource control (RRC) connection, that is, from the RRC idle (Idle) state. RRC Connected state. The UE needs to send a random access preamble (preamble) during random access, and the network side detects the random access preamble in a specific time-frequency resource to implement identification of the UE and synchronization of the uplink.

FIG. 3 is a schematic diagram of network deployment of a cellular wireless communication system. Shown in Figure 3 may be a 3GPP LTE/LTE-A system, or other cellular wireless communication technology. In an access network of a cellular radio communication system, a network device generally includes a certain number of base stations (also referred to as a Node B, a Node B, or an evolved Node B, an evolved Node B, an eNB, or an enhanced Node B, Enhanced Node B, eNB), and other network entities or network elements. Or, in general, it can also be collectively referred to as an E-UTRAN (Evolved Universal Terrestrial Radio Access Network) in 3GPP. The base station referred to herein also includes a Low Power Node (LPN) in the network, such as a femto cell or a home base station (pico, relay, femto, HeNB, Home eNB, etc.). For simplicity of description, only three base stations are shown in FIG. The base station provides a certain wireless signal coverage, and a terminal (such as a user equipment, User Equipment, UE, or device) within the coverage area can perform wireless communication with the base station. The radio signal coverage area of a base station may be divided into one or more cell cells or sector sectors based on certain criteria, for example, may be three cells.

For D2D communication devices, the D2D user equipment uses the uplink radio resources of the cellular system. In order not to interfere with the data of the user equipment of the cellular system, a dedicated resource area needs to be demarcated for the D2D user equipment, and the D2D equipment discovery can only be performed in this resource area, and at the same time, the user equipment of the cellular system cannot transmit data in the resource area. However, the user equipment itself cannot determine the resource area available to the D2D user equipment, and can obtain the available resource area only from the D2D discovery resource configuration information indication sent by the network side. In order to enable the D2D UE to accurately know the resources transmitted and received by the D2D discovery signal, it does not affect the cellular system, which requires a reasonable and effective configuration of the D2D discovery resources, and a certain configuration indication method.

Based on the above considerations, the embodiment of the present invention provides a D2D resource configuration method, which specifically includes:

The D2D resource is converted into the D2D resource configuration information in a specified manner, and the network side indicates part or all of the resource configuration information corresponding to the D2D resource to the user equipment by using configuration signaling and/or other manners;

Correspondingly, the user equipment obtains D2D resource configuration information according to the indication, and recovers the D2D resource according to the D2D resource configuration information, and the user equipment performs transmission and reception of the communication signal according to the D2D resource.

Embodiment 1

A way to discover the configuration parameters of a resource zone. The configuration parameters include:

Discovering the period of the resource area, the frequency domain resource bandwidth of the discovery resource area, the radio frame number (SFN) offset corresponding to the start location of the discovery resource area, the number of discovered subframes in the discovery resource area, and the corresponding subframes found in the discovery resource area. The location of the radio frame is found in the discovery resource area, and the user equipment determines the discovery resource area of the discovery type according to the configuration parameter; or

Discovering the period of the resource region, the frequency domain resource bandwidth of the discovery resource region, the radio frame number (SFN) offset corresponding to the start location of the discovery resource region, the location of the radio frame corresponding to the discovery subframe in the discovery resource region, and the discovery in the discovery resource region Subframe position, the user equipment according to the configuration parameter Number of discovery resources that determine the type of discovery; or,

And discovering a frequency of the resource region, a frequency domain resource bandwidth of the discovery resource region, and a radio frame number (SFN) offset corresponding to the start location of the resource region, where the user equipment calculates the discovery type according to the configuration parameter and a predefined formula. Discovery resource area; or,

Discovering a period of the resource region, a frequency domain resource bandwidth of the discovery resource region, a radio frame number (SFN) offset corresponding to the start location of the discovery resource region, and a 10-bit bitmap indication parameter indicating the subframe position, the user equipment Determining a discovery resource region of a discovery type according to the configuration parameter and a pre-agreed special rule, and a 10-bit bitmap; or

Discovering a period of the resource region, a radio frame number (SFN) offset corresponding to the start location of the discovery resource region, and the user equipment according to the fixed frequency domain resource bandwidth, and determining the discovery type according to the configuration parameter and a predefined formula. Discover the resource area; or,

And discovering a frequency domain resource bandwidth of the resource area, a 10-bit bitmap indication parameter for indicating a subframe position, and the user equipment according to the fixed discovery resource area period and the radio frame number corresponding to the fixed discovery resource area start position (SFN) Offset, determining the discovery resource area of the discovery type according to the configuration parameters and the pre-agreed special rules, and the 10-bit bitmap; or

Discover the period of the resource area, the frequency domain resource bandwidth of the discovery resource area, the radio frame number (SFN) offset corresponding to the start location of the discovery resource area, the number of discovered resource groups in the period, the number of radio frames included in the discovery resource group, and the period The first discovery resource group corresponds to the offset of the start location of the discovery resource region, the resource group interval, and the 10-bit bitmap indication parameter used to indicate the subframe position, and the user equipment determines the discovery resource region of the discovery type according to the configuration parameter. .

The configuration described above can also form a new configuration by different combinations.

The configuration parameters of the discovery resource area of the second discovery type may also include a hopping manner of the user equipment-specific discovery resource.

The configuration of the discovery resource area includes: discovering the period of the resource area, discovering the frequency domain resource bandwidth of the resource area, and discovering the radio frame number (SFN) offset corresponding to the start position of the resource area, and discovering The number of subframes found in the resource area, the location of the radio frame corresponding to the sub-frame found in the discovery resource area, and the location of the sub-frame found in the discovery resource area.

The period of the resource area is determined by the number of radio frames, and the time period of the N-discovery resource area is 10*N milliseconds, which can support a limited number of periods. The network side selects one of the configurations and indicates the corresponding index. Give the user device. For example, the maximum support is 8: {4, 8, 16, 32, 64, 128, 256, 512}. If the configuration is 16 (160 ms), the index number 3 is indicated to the UE. The specific supported period values can be more, such as {5,10,20,50,100,200,500,1000,...}. The user equipment determines the period of the discovered resource area according to the indicated index.

The radio frame number offset (SFNoffset) corresponding to the start position of the resource region is found, the system frame number SFN satisfies the radio frame of the formula SFN mod N=SFNoffset as the start frame of the resource pool period, and mod represents the modulo operation. Or the network side indicates the radio frame number offset of the D2D resource region start position to SFN #0. For example, four values are supported: {f0, f1, f2, f3}, and the network side indicates the corresponding index to the user equipment. The user equipment determines, according to the indicated index, a radio frame number offset corresponding to the start location of the discovery resource region.

The frequency domain resource bandwidth of the resource region can be represented by two parameters: the starting resource block location and the number of resource blocks, k0: the starting resource block location, and K: the number of resource blocks. The user equipment determines the frequency domain resource bandwidth of the discovery resource region according to the parameters k0 and K. It is also possible to fix several configurations, and the parameters are combined into a resource block position and a resource block number, and each configuration corresponds to one index, and the signaling indication index can be configured. Table 1 below is an example of this approach.

IndexIndex	起始资源块位置Starting resource block location	资源块个数Number of resource blocks
IndexIndex	起始资源块位置Starting resource block location	资源块个数Number of resource blocks	00	00	5050
11	2020	2525	00	00	5050

Table 1

The number of subframes M found in the resource area is found, indicating the number of subframes in the discovery resource region that can be used for discovering signal transmission. Can support a limited number of values, select one of the configurations on the network side, and Indicate the corresponding index to the user equipment. For example, the maximum support is 8: {1, 2, 4, 8, 16, 32, 64, 128}. If the configuration is 16 (160 ms), the index number 4 is indicated to the UE. The user equipment determines the number of discovered subframes of the discovered resource area according to the indicated index. Here is just an example. The number of discovered sub-frames can be more likely, such as {3,5,6,7,9,10,20,100,...}.

The location of the radio frame corresponding to the sub-frame is found in the resource area, and the location of the radio frame where the sub-frame is located is indicated. The location of the radio frame may be indicated by an index of the sequence of the radio frames in which the subframe is found in the corresponding period. For example, if the period includes three discovery subframes, respectively, in three radio frames, the frame number is from small to large. The indexes of the three radio frames are 0, 1, and 2, respectively. If two discovery sub-frames are configured in a frame, the corresponding frame index is sent twice, in a similar manner multiple times. FIG. 8 shows an example in which three discovery subframes are included in two radio frames, and the corresponding frame index in the signaling is 0, 1, and 1, and the subframe numbers are 3, 3, and 8, respectively.

In another configuration, the manner in which the location of the radio frame corresponding to the subframe is found in the resource region is calculated by using a formula. For example, if the resource pool period is N, the number of subframes is found to be M, and (N mod M) is obtained. The first radio frame position with the discovery sub-frame, assuming the start position of the cycle is L, the first radio frame position containing the discovery sub-frame is (L+(N mod M)). Later, the position of the radio frame is found in steps of (N/M), and the position is determined in turn, and / indicates the quotient of the division.

The radio frame position corresponding to the discovery sub-frame in the discovery resource area may also be configured by using a special rule, for example, according to the parity frame configuration, indicating that a parameter b is used to indicate that the sub-frame is configured on the odd or even frame, and if it is an odd number, the former The discovery subframe is configured on the M odd radio frames, and the discovery subframe is configured on the first M even radio frames.

The configuration of discovering the location of the subframe in the resource area is configured by the subframe number. The subframe configuration in FIG. 10 is 3, 3, and 8, respectively.

Another configuration of the subframe position is indicated by a 10-bit bitmap, corresponding to 10 subframe positions, "1" is indicated as a discovery subframe, and "0" is not. Such a frame contains multiple hairs When the sub-frame is present, it is not necessary to repeat the indication frame index. For example, 000000000 indicates that subframe 3 in the radio frame is configured to discover a subframe, and for example, 0000000110 indicates that subframe 7 and subframe 8 in the radio frame are configured as a discovery subframe.

Similarly, the configuration of the subframe position can also be determined by the convention formula, which is similar to the configuration of the radio frame. For example, if the resource pool period is N and the number of subframes is found to be M, in the radio frame that determines the discovery subframe, The location of the discovery subframe is determined according to (SFN mod Nu), where Nu is the number of subframes after the downlink subframe is removed in the radio frame.

In addition, the position of the sub-frame can be indicated by a 10-bit bit bitmap, and the position of the sub-frame is found according to the bit bitmap configuration in all radio frames.

It should be noted that the numbers herein are examples and are not intended to limit the embodiments of the present invention.

The discovery of the resource area configuration may further include: discovering the period of the resource area, discovering the frequency domain resource bandwidth of the resource area, discovering the radio frame number (SFN) offset corresponding to the start position of the resource area, discovering the number of resource groups in the period, and discovering The number of radio frames included in the resource group, the offset of the first discovery resource group corresponding to the start location of the discovery resource region, the resource group interval, and the 10-bit bitmap indication parameter used to indicate the subframe position, where the user equipment is The configuration parameters determine the discovery resource area of the discovery type.

The configuration of the number of resource groups found in the period can be indicated by a parameter, for example: Ng=3/5/8/16/..., Ng indicates the number of resource groups found in the period, indicating that there are 3/5/8/ in the discovery resource period. 16/... resource groups. The number of radio frames included in the discovery resource group can be indicated by a parameter value. For example, 1/2/3/... indicates that the number of radio frames included in the discovery resource group is 1/2/3/. The offset of the first discovery resource group corresponding to the start location of the discovery resource region in the period is used to indicate the offset value of the start position of the first resource group in the discovery resource period, and it is assumed that the number of radio frames that can be offset is represented by GroupOffset. The indication, for example: GroupOffset=0/1/2/3/..., indicates that the resource area start position offset is 0/1/2/3/... after the radio frame is the position of the first discovery resource group in the period. Resource group interval Shown is the interval between resource groups found in the period, which can be indicated by a parameter. For example, 0/1/2/... indicates that the interval between resource groups found in the period is 0/1/2/... radio frames. Within the discovery resource group, the configured discovery subframe position is represented by a 10-bit bit bitmap. For example, 0000000110 indicates that subframe 7 and subframe 8 in the radio frame are configured as discovery subframes. At the same time, the bit map of the number of subframes included in the resource group may be used to represent the configured D2D subframe position, and the indication of the entire resource group is implemented in a repeated manner.

The location of the discovered resource group can also be calculated by the convention formula, for example, according to the formula (SFN mod Np)=offset, where SFN is the radio frame number, Np is the discovery resource group interval, and offset is the configured resource group offset value. The formula indicates that if the value of the radio frame number modulo the discovery resource group interval is equal to the configured offset value, the corresponding radio frame is the starting radio frame of the discovery resource group, and the consecutive K radio frames are the discovery resource group, where K is Discover the number of radio frames that the resource group contains. Here K is not greater than the discovery resource group interval Np. For example, if the resource group offset value is set to 0, the resource group interval is configured to be 10, and the number of radio frames included in the discovery resource group is 3. The user equipment according to the formula (SFN mod 10)=0, the radio frame satisfying the formula is the start frame of the discovery resource group, and three consecutive radio frames form one discovery resource group.

In addition, the above formula may also be calculated by using the index number of the radio frame in the discovery resource region period, so that the formula becomes (SfIndex mod Np)=offset, where SfIndex is the index number of the radio frame in the discovery resource region period. An example is shown in FIG. 9. It is assumed that the period of the resource region is 320 ms, and the frequency domain resource bandwidth of the resource region is found to be 0 to 49, and the radio frame number (SFN) offset corresponding to the start location of the discovery resource region is 0. The resource group offset value is set to 0, and the resource group interval is configured to be 10 radio frames. The number of radio frames included in the discovery resource group is 3, and the 10-bit long bit bitmap indicating the location of the found sub-frame is 0000000010.

The parameter configuration of the discovery resource area can also be implemented by discovering the resource area configuration table. The configuration table includes different fixed configurations of the resource area parameters. Each fixed configuration corresponds to an index number, and the network side only needs to indicate the The index number is given to the user device. User setting The corresponding specific configuration parameter is found in the discovery resource area configuration table according to the index number. An example is shown in Table 2. In the example of Table 2, the resource area configuration table includes eight configuration parameters, which respectively correspond to 8 index numbers of 0 to 7. Assuming that the network side determines that the configuration parameter corresponding to index number 7 is the configuration parameter of the discovery resource area, the network side passes The configuration signaling sends the index number 7 to the user equipment. After receiving the index number 7, the user equipment determines that the configuration parameter corresponding to the index number 7 is the configuration parameter of the corresponding discovery resource area by using the discovery resource area configuration table.

Table 2

Again, the above numbers are examples and are not to be construed as limiting the invention.

Embodiment 2

For the second type of discovery, in addition to configuring the resource region parameter, the parameter of the user equipment-specific discovery resource needs to be configured, and the user equipment determines the location of the discovery resource dedicated to the user equipment according to the dedicated discovery resource parameter, and sends the second A discovery signal of the type of discovery.

The location of the discovery resource dedicated to the user equipment may be indicated by two parameters: time domain and frequency domain. For example, Td2d=0 indicates that the discovery subframe in the radio frame with the radio frame number SFN in the resource region is an exclusive number of the user equipment. The resource time domain location, Td2d=1, indicates that the discovery subframe in the radio frame with the radio frame number SFN in the resource region is the dedicated resource time domain location of a certain user equipment; Fd2d represents the frequency domain of the user equipment dedicated discovery resource. The location, Fd2d=1/2/3/... indicates that the resource block 1/2/3/... is the frequency domain location of the dedicated discovery resource of a certain user equipment.

The user equipment-specific discovery resource location may also be indicated by a parameter indicating that the user equipment-specific discovery resource location is in the discovery resource region of the second discovery type by using one parameter. A resource index number in the domain, where the resource index number corresponds to a resource location in a discovery resource area of the second discovery type according to a certain mapping relationship. An example of the mapping relationship is shown in FIG. Assuming that there are three discovery sub-frames in the resource discovery period, and each sub-frame contains n resource blocks (RBs), the resources in the resource area will be found in the order of the resource block (RB) as shown in the figure. The index of ~n+m-1 establishes a mapping relationship. The mapping method includes two types, including a pre-frequency domain and a first-time domain. As shown in FIG. 11, the figure corresponds to a case where the discovery resource period includes m subframes, and each subframe includes n resource blocks.

An example of indicating the location of the discovery resource dedicated to the user equipment by using one parameter Rd2d: Rd2d=0 indicates that the resource block whose resource index number is odd in the discovery resource area of the second discovery type is a dedicated discovery resource of a certain user equipment; Rd2d= 0 indicates that the resource block whose resource index number is even in the discovery resource area of the second discovery type is a dedicated discovery resource of a certain user equipment. The user equipment determines the location of the dedicated discovery resource according to the parameter Rd2d and the mapping relationship shown in FIG. 10 and FIG. Of course, the specific mapping method can also adopt other methods.

The user equipment-specific discovery resource may also be configured by the parameter indicating the initial location of the dedicated discovery resource and the discovery resource hopping mode. The resource hopping mode may be indicated by a parameter or may be agreed to a certain mode. For example, the time domain parameter Td2d=1/2/3/... indicates that the first discovery subframe of the 1/2/3/...th radio frame in the resource region is the time domain location of the initial location of the dedicated discovery resource, Fd2d = 1/2/3/... indicates that the resource block 1/2/3/... is the frequency domain position of the initial location of the dedicated discovery resource. The user equipment determines the initial location of the dedicated discovery resource according to the indicated parameters Td2d and Fd2d, and combines the indicated or agreed discovery resource hopping manner, for example, hopping three discovery discovery subframes in the time domain to determine the dedicated discovery resource of the user equipment. . Another example: the parameter Rd2d=3 indicates the resource block index number of the start position of the dedicated discovery resource, and the user equipment determines the starting position of the dedicated discovery resource according to the mapping relationship of FIG. 10 and FIG. 11 as the first discovery subframe in the period. The resource block 3, in combination with the indicated or agreed resource hopping manner, determines the user equipment-specific discovery resource in the discovery resource area.

The above numbers are all examples and are not intended to limit the invention.

Embodiment 3

For D2D resource configuration between adjacent different cells, an indication of configuration signaling between cells may be required. The following is an example of D2D discovery technology, but it is also applicable to D2D communication technology.

For neighboring cells of the synchronization network, timing synchronization between adjacent cells, and radio frames and radio frame numbers are aligned. Different cells adopt the same discovery resource configuration, so that the user equipment directly determines the discovery resource region of the neighboring cell according to the discovery resource configuration information of the current cell, and receives the discovery signal of the neighboring cell in the discovery resource region.

For neighboring cells of the asynchronous network, the timing between adjacent cells is not synchronized, and the radio frame and the radio frame number are not aligned. Even if different cells adopt the same discovery resource configuration, configuration signaling indications between neighboring cells are still required. The user equipment determines the discovery resource region of the neighboring cell according to the configuration signaling indication of the neighboring cell and the discovery resource configuration information of the local cell, and receives the discovery signal of the neighboring cell in the discovery resource region.

An inter-cell resource configuration signaling indication manner is that part or all of the resource configuration parameters, and/or radio frame information, are discovered by the base station to which the neighboring cell belongs through the X interface or the implementation layer interface or the wireless air interface interaction, and / or cell identification information. The user equipment acquires the discovery resource configuration information of the neighboring cell from the configuration signaling indication sent by the base station, and determines the discovery resource area of the neighboring cell.

An example of the resource allocation signaling indication mode of the small interval is shown in FIG. The UE 83 and the UE 84 belong to the cell Cell 85 and the Cell 86 in the base station 81 and the base station 82, respectively. The discovery resource areas of Cell 85 and Cell86 are the same or different configurations, because the timings of Cell1 and Cell2 are not synchronized, and the radio frame numbers are not aligned. Assuming that Cell 85 and Cell 86 obtain mutual timing information by other means, base station 81 and base station 82 exchange cell ID and radio frame number through an X interface or an implementation layer interface or a wireless air interface. After receiving the radio frame number of the neighboring cell base station, the base station may receive the radio frame number. The obtained radio frame number counts the radio frame number of the neighboring cell according to the radio frame timing, and obtains the radio frame number timing of the neighboring cell. For example, the base station 2 performs the radio frame number counting of the Cell 85 based on the received radio frame number of the base station 1. The radio frame number timing of the Cell 85 is obtained, and the radio frame number timing of the Cell 85 is indicated to the user equipment such as the UE 84. The UE 84 determines the discovery resource of the Cell 85 based on the resource pool configuration information of the cell 86 of the cell, and receives the discovery signal of the neighboring cell on the corresponding resource according to the radio frame number of the Cell 85 sent by the base station.

Another example of a resource allocation signaling indication mode for a small interval is shown in FIG. The non-synchronized neighboring cells forward the timing information and/or the radio frame number through the UE, and the forwarded resource location is in the first discovery subframe of the discovery resource region period, as in the subframe 91 in FIG. The resource pool information of the neighboring cell is consistently configured. The receiving UE can obtain the neighboring cell timing according to the timing information forwarded by the neighboring cell UE. According to the offset of the first discovered subframe and the pre-configured resource period, the neighboring resource discovery area can be determined. The starting location, combined with the discovery resource configuration of the cell, can determine the radio resources of the neighboring cell. Alternatively, the receiving UE obtains the neighboring cell radio frame number timing according to the radio frame number forwarded by the neighboring cell UE, and can determine the neighboring cell radio resource according to the discovery resource configuration of the cell.

The above embodiments are mostly described by taking the D2D discovery signal as an example, but this does not limit the application of the present invention to D2D communication.

The integrated modules described in the embodiments of the present invention may also be stored in a computer readable storage medium if they are implemented in the form of software functional modules and sold or used as separate products. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions. A computer device (which may be a personal computer, server, or network device, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. . Thus, the embodiment of the present invention is not limited Made from any specific combination of hardware and software.

Correspondingly, the embodiment of the present invention further provides a computer storage medium, wherein the computer program is used to execute the device-to-device resource configuration method and the device-to-device resource processing method in the embodiment of the present invention.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Industrial applicability

Claims

A device-to-device resource configuration method, the method comprising:

The network side determines device to device D2D resource configuration parameters;

Part or all of the D2D resource configuration parameter is indicated to the user equipment by means of signaling and/or signaling; and the D2D resource configuration parameter is used by the user equipment to obtain the D2D resource.
The method of claim 1, wherein the D2D resource comprises: a radio resource that the D2D user equipment can use to transmit or receive a D2D signal;

The content of the D2D resource includes one or more of the following contents:

a resource corresponding to the first resource allocation mode and/or a resource corresponding to the second resource allocation mode;

User equipment specific resources corresponding to the first resource allocation manner and/or the second resource allocation manner.
The method according to claim 1, wherein the manner in which the network side determines the D2D resource configuration parameter comprises one or more of the following manners:

To describe a parameter expression manner of the D2D resource;

Declaring a combination of a parameter set describing the D2D resource and an index corresponding to the parameter set;

The manner in which the parameter expression manner, and/or the parameter set and the index combination expression manner are mapped by a formula is used.
The method according to claim 1, wherein the D2D resource configuration parameter comprises: configuration parameter content corresponding to the D2D resource;

The D2D resource configuration parameter content includes one or more of the following contents:

a D2D resource configuration parameter including a configuration parameter corresponding to the first resource allocation mode and/or a configuration parameter corresponding to the second resource allocation mode;

A configuration parameter of the user equipment-specific resource corresponding to the first resource allocation mode and/or the second resource allocation mode.
The method of claim 4, wherein the D2D resource configuration parameter, the package Includes one or more of the following parameters:

The period of the D2D resource;

Frequency domain resource bandwidth of D2D resources;

The radio frame number SFN offset corresponding to the start position of the D2D resource;

The number of D2D subframes in the D2D resource;

a radio frame position corresponding to the D2D subframe in the D2D resource;

D2D subframe position within the D2D resource;

a bit bit bitmap for indicating the position of the D2D subframe;

The number of resource groups in the D2D resource;

The number of radio frames is included in the D2D resource group;

a bit bit bitmap indicating a D2D subframe position in the D2D resource group;

D2D resource group offset, discovery resource group interval;

The hopping mode of the user equipment dedicated resource;

Or the configuration parameter of the discovery resource area further includes an index corresponding to the combination of one or more parameters.
The method according to claim 4, wherein the configuration parameter corresponding to the first resource allocation mode and the configuration parameter corresponding to the second allocation mode are independent of each other, or some of the parameters are the same.
The method according to claim 4, wherein the configuration parameter of the user equipment-specific resource corresponding to the first resource allocation manner and/or the second resource allocation manner includes one or more of the following parameters:

The initial location or all locations of the user equipment specific resources corresponding to the first resource allocation manner and/or the second resource allocation manner;

a hopping manner of the user equipment-specific resource corresponding to the first resource allocation manner and/or the second resource allocation manner;

Alternatively, the configuration parameter of the user equipment-specific resource corresponding to the first resource allocation manner and/or the second resource allocation manner further includes an index corresponding to the combination of one or more parameters.
The method according to claim 7, wherein the expression manner adopted by the initial location of the user equipment-specific resource corresponding to the first resource allocation manner and/or the second resource allocation manner includes any one of the following manners:

And using a time domain parameter and a frequency domain parameter to respectively indicate a time domain and a frequency domain location of the initial location of the user equipment dedicated resource of the first resource allocation manner and/or the second resource allocation manner;

Using a parameter to indicate an index number of the initial location of the user equipment-specific resource in the D2D resource, the index number and the first resource allocation manner in the D2D resource and/or the user equipment-specific discovery resource in the second resource allocation manner The time domain and the frequency domain location have corresponding mapping relationships.
The method of claim 1 wherein said indicating in a manner indicative of signaling and/or signaling comprises one or more of the following:

Dedicating the D2D resource configuration parameter by using system information or RRC common signaling;

The configuration parameter of the user equipment-specific resource corresponding to the first resource allocation mode and/or the second resource allocation mode is sent by the RRC dedicated signaling.
The method of claim 1, wherein the indicating is performed in a manner indicating signaling and/or signaling, further comprising an indication of the D2D resource configuration parameter between adjacent different cells;

The indication for the D2D resource configuration parameter between adjacent different cells includes any one of the following:

For the neighboring cell of the synchronization network, the neighboring cell configures the D2D resource according to the same parameter, and the D2D resource of the second cell is determined by the D2D resource configuration parameter of the first cell, so that the user equipment is based on the D2D of the second cell. The resource receives the D2D signal of the second cell;

For a neighboring cell of the non-synchronous network, the neighboring cell configures the D2D resource according to the same parameter, and is indicated by the second cell and combined with the resource configuration parameter of the first cell and the second cell. Determining, by the timing reference, the D2D resource of the second cell, so that the user equipment receives the D2D signal of the second cell according to the D2D resource of the second cell;

The first cell and the second cell are mutually adjacent to the second cell, where the first cell is a cell where the user equipment resides, and the second cell is a neighbor of the first cell. Community.
The method according to claim 10, wherein the indication manner of the D2D resource configuration parameter between the adjacent different cells comprises any one of the following:

The base station to which the second cell belongs in the neighboring cell sends the cell identifier ID and the radio frame number corresponding to the second cell to the base station to which the first cell belongs, and the base station to which the first cell belongs sends the cell identifier ID and the radio frame number. The user equipment in the first cell is forwarded by the user equipment in the second cell, and the user equipment in the first cell receives the forwarded radio frame number.
A network device, the network device comprising:

a first determining unit, configured to determine a device-to-device D2D resource configuration parameter;

The indication sending unit is configured to indicate part or all of the D2D resource configuration parameter to the user equipment by means of indication signaling and/or signaling; and the D2D resource configuration parameter is used by the user equipment to obtain the D2D resource.
The network device according to claim 12, wherein the D2D resource comprises: a radio resource that the D2D user equipment can use to transmit or receive a D2D signal;

The content of the D2D resource includes one or more of the following contents:

a resource corresponding to the first resource allocation mode and/or the second resource allocation mode;

User equipment specific resources corresponding to the first resource allocation manner and/or the second resource allocation manner.
The network device according to claim 12, wherein the manner in which the network side determines the D2D resource configuration parameter comprises one or more of the following manners:

To describe a parameter expression manner of the D2D resource;

Declaring a combination of a parameter set describing the D2D resource and an index corresponding to the parameter set formula;

The manner in which the parameter expression manner, and/or the parameter set and the index combination expression manner are mapped by a formula is used.
The network device according to claim 12, wherein the D2D resource configuration parameter comprises: configuration parameter content corresponding to the D2D resource;

The D2D resource configuration parameter content includes one or more of the following contents:

a D2D resource configuration parameter including a configuration parameter corresponding to the first resource allocation mode and/or a configuration parameter corresponding to the second resource allocation mode;

A configuration parameter of the user equipment-specific resource corresponding to the first resource allocation mode and/or the second resource allocation mode.
The network device according to claim 15, wherein the D2D resource configuration parameter comprises one or more of the following parameters:

The period of the D2D resource;

Frequency domain resource bandwidth of D2D resources;

The radio frame number SFN offset corresponding to the start position of the D2D resource;

The number of D2D subframes in the D2D resource;

a radio frame position corresponding to the D2D subframe in the D2D resource;

D2D subframe position within the D2D resource;

a bit bit bitmap for indicating the position of the D2D subframe;

The number of resource groups in the D2D resource;

The number of radio frames is included in the D2D resource group;

a bit bit bitmap indicating a D2D subframe position in the D2D resource group;

D2D resource group offset, discovery resource group interval;

The hopping mode of the user equipment dedicated resource;

Or the configuration parameter of the discovery resource area further includes one or more parameters corresponding to the foregoing The index of the number combination.
The network device according to claim 15, wherein the configuration parameter corresponding to the first resource allocation mode and the configuration parameter corresponding to the second allocation mode are independent of each other, or some of the parameters are the same.
The network device according to claim 15, wherein the configuration parameter of the user equipment-specific resource corresponding to the first resource allocation manner and/or the second resource allocation manner includes one or more of the following parameters:

The initial location or all locations of the user equipment specific resources corresponding to the first resource allocation manner and/or the second resource allocation manner;

a hopping manner of the user equipment-specific resource corresponding to the first resource allocation manner and/or the second resource allocation manner;

Alternatively, the configuration parameter of the user equipment-specific resource corresponding to the first resource allocation manner and/or the second resource allocation manner further includes an index corresponding to the combination of one or more parameters.
The network device according to claim 18, wherein the expression manner adopted by the initial location of the user equipment-specific resource corresponding to the first resource allocation manner and/or the second resource allocation manner includes any one of the following manners:

And using a time domain parameter and a frequency domain parameter to respectively indicate a time domain and a frequency domain location of the initial location of the user equipment dedicated resource of the first resource allocation manner and/or the second resource allocation manner;

Using a parameter to indicate an index number of the initial location of the user equipment-specific resource in the time domain and the frequency domain in the D2D resource, the index number and the first resource allocation manner and/or the second resource allocation manner in the D2D resource The location of the user equipment-specific discovery resource has a corresponding mapping relationship.
The network device according to claim 12, wherein the indication sending unit is further configured to indicate in a manner of indicating signaling and/or a signal, including one or more of the following manners:

Dedicating the D2D resource configuration parameter by using system information or RRC common signaling;

Is sent by RRC dedicated signaling to indicate the first resource allocation mode and/or the second resource allocator The configuration parameter of the user equipment-specific resource corresponding to the formula.
The network device according to claim 12, wherein the indication sending unit is further configured to indicate in a manner of indicating signaling and/or a signal, and further comprising, for the D2D resource between adjacent different cells. An indication of the configuration parameters;

The indication for the D2D resource configuration parameter between adjacent different cells includes any one of the following:

For the neighboring cell of the synchronization network, the neighboring cell configures the D2D resource according to the same parameter, and the D2D resource of the second cell is determined by the D2D resource configuration parameter of the first cell, so that the user equipment is based on the D2D of the second cell. The resource receives the D2D signal of the second cell;

For a neighboring cell of the non-synchronous network, the neighboring cell configures the D2D resource according to the same parameter, and determines, according to the indication of the second cell, the resource configuration parameter of the first cell, and the timing reference of the second cell. The D2D resource of the second cell, so that the user equipment receives the D2D signal of the second cell according to the D2D resource of the second cell;

The first cell and the second cell are mutually adjacent to the second cell, where the first cell is a cell where the user equipment resides, and the second cell is a neighbor of the first cell. Community.
The network device according to claim 21, wherein the indication manner of the D2D resource configuration parameter between the adjacent different cells comprises any one of the following:

The base station to which the second cell belongs in the neighboring cell sends the cell identifier ID and the radio frame number corresponding to the second cell to the base station to which the first cell belongs, and the base station to which the first cell belongs sends the cell identifier ID and the radio frame number. The user equipment in the first cell is forwarded by the user equipment in the second cell, and the user equipment in the first cell receives the forwarded radio frame number.
A device-to-device resource processing method, the method comprising:

The user equipment obtains a D2D resource configuration parameter by receiving an indication on the network side;

The user equipment determines the D2D resource according to the D2D resource configuration parameter.
A user equipment, the user equipment comprising:

An obtaining unit, configured to obtain a D2D resource configuration parameter by receiving an indication of a network side;

a second determining unit, configured to determine a D2D resource according to the D2D resource configuration parameter.