WO2016155113A1

WO2016155113A1 - Group communication method, user equipment, base station device and system

Info

Publication number: WO2016155113A1
Application number: PCT/CN2015/080407
Authority: WO
Inventors: 郑倩; 雷艺学; 张晨璐; 张云飞; 何成名
Original assignee: 宇龙计算机通信科技(深圳)有限公司
Priority date: 2015-03-31
Filing date: 2015-05-29
Publication date: 2016-10-06
Also published as: CN104754524B; CN104754524A

Abstract

The invention discloses a group communication method, comprising: transmitting a buffer status report (BSR) to a base station device, wherein the BSR carries at least one group index, each group index corresponds to a group recognition code of at least one group in which the current user equipment is located, and each group index or each group recognition code is mapped to a predefined priority value, so that the base station device distributes time frequency resources for different user equipment according to the priority value; acquiring time frequency resources distributed by the base station device to the present user equipment; distributing the time frequency resources to the group in which the current user equipment is located according to the priority value; and performing group communication with other user equipment in the group to which the time frequency resources are distributed. Accordingly, the embodiments of the present invention also disclose a user equipment, a base station device and a group communication system. By means of the group communication method of the present invention, it can be ensured that resources required by group communication are distributed reasonably, improving business quality.

Description

Group communication method, user equipment, base station equipment and system

This application claims priority to Chinese Patent Application No. 201510147650.3, entitled "Method of Group Communication, User Equipment, Base Station Equipment and System", filed on March 31, 2015. The content is incorporated herein by reference.

Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a method, a user equipment, a base station device, and a system for group communication.

Background technique

With the continuous development of wireless communication technology, Device to Device (D2D) has become one of the hotspots of 3GPP Rel-12 standardization technology. D2D allows two user equipments (User Equipments, UEs) to directly transmit data through a specific channel (Sidelink Channel) without going through an evolved base station device (Evolutional Node B, eNB). Of course, D2D is not limited to two users. Data transmission between devices can also support single-point to multi-point group communication (Group Communication). For example, referring to FIG. 7, the SRC UE indicates a source UE (ie, a UE that transmits data), and the DST UE indicates a target UE (ie, a UE that receives data), and the source UE and the target UE perform a Sidelink Channel in their group. Group communication, in addition, it can be seen from the figure that the source UE and the target UE can be in different groups at the same time.

The process of the existing group communication of the D2D is: (1) the source UE sends a Buffer Status Report (BSR) to the eNB to request the time-frequency resource; (2) the source UE listens to the physical downlink control channel (Physical Downlink) Control Channel, PDCCH), or Enhanced Physical Downlink Control Channel (ePDCCH), to demodulate the buffer demand (Buffer Size) allocated to it, real-time resources; (3) source UE time Frequency resources are allocated to each group for group communication.

However, since the eNB does not distinguish the priorities of different source UEs and the priorities of different groups of the same source UE, the following problems occur: (1) the eNB can only randomly limit the time-frequency resources. The source UEs are allocated to the source UE. If the source UEs with high priority have fewer time-frequency resources and the lower-priority source UEs request more time-frequency resources, most of the resources are allocated to the source with lower priority. (2) The eNB can only allocate the limited time-frequency resources to the group of the same source UE. If the group with the higher priority has less time-frequency resources and the lower-priority group requests the time-frequency resources, More, it is likely that most of the resources are assigned to a group with a lower priority.

Summary of the invention

The invention provides a group communication method, a user equipment, a base station device and a system, and solves the problem that the communication group resource allocation is unbalanced. The technical solution can ensure that resources required for group communication are properly allocated and improve services. quality.

The user equipment described in the present invention refers to a communication device having data transmission capability, including but not limited to a mobile terminal, an intelligent terminal, and a wearable device. The base station device described in the present invention includes a conventional base station device and has a base station function. Equipment, such as a terminalized cell (T-SC).

A first aspect of the embodiments of the present invention provides a method for group communication, where the method is applied to a terminal side, including:

And sending, to the base station device, a buffer status report BSR, where the BSR carries at least one group index, where each of the group indexes corresponds to a group identifier of at least one group where the user equipment is located, and each of the groups The index or each of the group identifiers is mapped to a predefined priority value, so that the base station device allocates time-frequency resources according to the user equipment whose priority value is different;

Obtaining, by the base station device, the time-frequency resource allocated by the user equipment;

Allocating the time-frequency resource to the group where the user equipment is located according to the priority value;

Group communication with other user equipment in the group assigned to the time-frequency resource.

In a first possible implementation manner of the first aspect, before the sending the buffer status report BSR to the base station device, the method further includes:

Determining whether there is a time-frequency resource required for transmitting the BSR, and if not, transmitting a scheduling request SR to the base station device, so that the base station device allocates a time-frequency resource required for sending the BSR to the user equipment.

With reference to the possible implementation manner of the first aspect, in a second possible implementation, the mapping between the group index and the priority value includes:

The same group index is mapped to the same priority value, wherein the group index corresponding to the group of the same service type is the same.

With reference to the first aspect, and the second possible implementation manner of the first aspect, in a third possible implementation manner, a mapping relationship between the group index and the priority value is broadcast by the base station device Message, or RRC message, or non-access stratum NAS message notification.

With reference to the possible implementation manner of the first aspect, in a fourth possible implementation manner, the corresponding relationship between the group index and the group identifier is defined by the user equipment and is through a radio control protocol RRC message or non- The access layer NAS message is reported to the base station device.

With reference to the first aspect, and the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner, a mapping relationship between the group identifier and the priority value is performed by a proximity service function Prose Function Define and notify the user equipment or the base station equipment.

A second aspect of the embodiments of the present invention provides a method for group communication, where the method is applied to a base station side, including:

Receiving, by the at least one user equipment, a buffer status report BSR, where the BSR carries at least one group index, and each of the group indexes corresponds to a group identifier of at least one group where the user equipment is located, where each Decoding the group index or each of the group identifiers to a predefined priority value;

Allocating time-frequency resources according to the user equipments with different priority values, so that each of the user equipments respectively allocates the time-frequency resources to respective groups, and the group allocated to the time-frequency resources Other user devices in the group perform group communication.

In a first possible implementation manner of the second aspect, before the receiving the BSR sent by the at least one user equipment, the method further includes:

If the scheduling request SR sent by any user equipment is received, the user equipment is allocated the time-frequency resource required for sending the BSR.

With reference to the possible implementation manner of the second aspect, in a second possible implementation, the mapping between the group index and the priority value includes:

With reference to the second aspect, and the second possible implementation manner of the second aspect, in the third possible implementation, before the receiving the BSR sent by the at least one user equipment, the method further includes:

And mapping the relationship between the group index and the priority value to each user equipment by using a broadcast message, or an RRC message, or a non-access stratum NAS message.

With reference to the possible implementation manner of the second aspect, in a fourth possible implementation manner, a corresponding relationship between the group index and the group identifier is defined by each user equipment and is a RRC message through a radio control protocol. Or reported by a non-access stratum NAS message.

With reference to the second aspect, and the fourth possible implementation manner of the second aspect, in a fifth possible implementation manner, a mapping relationship between the group identifier and the priority value is defined by a proximity service function Prose Function And notified by the proximity service function, or the specified user equipment, or the mobility management entity MME/Home Subscriber Server HSS.

A third aspect of the embodiments of the present invention provides a user equipment, including:

a report sending module, configured to send a buffer status report BSR to the base station device, where the BSR carries at least one group index, and each of the group indexes corresponds to a group identifier of at least one group where the user equipment is located, Each of the group index or each of the group identifiers is mapped to a predefined priority value, so that the base station device allocates time-frequency resources according to the user equipment whose priority value is different;

a resource obtaining module, configured to acquire the time-frequency resource allocated by the base station device to the user equipment;

a resource allocation module, configured to allocate the time-frequency resource to the group where the user equipment is located according to the priority value;

a group communication module, configured to perform group communication with other user equipments in the group allocated to the time-frequency resource.

In a first possible implementation manner of the third aspect, the user equipment further includes:

a scheduling requesting module, configured to determine whether there is a time-frequency resource required for sending the BSR, and if not, sending a scheduling request SR to the base station device, so that the base station device allocates, to the user equipment, the required to send the BSR Time-frequency resources.

In conjunction with a possible implementation of the third aspect, in a second possible implementation, the group index A mapping relationship with the priority value, including:

With reference to the third aspect, and the second possible implementation manner of the third aspect, in a third possible implementation manner, a mapping relationship between the group index and the priority value is broadcast by the base station device Message, or RRC message, or non-access stratum NAS message notification.

With reference to the possible implementation manner of the third aspect, in a fourth possible implementation manner, the corresponding relationship between the group index and the group identifier is defined by the user equipment and is through a radio control protocol RRC message or non- The access layer NAS message is reported to the base station device.

With reference to the third aspect, and the fourth possible implementation manner of the third aspect, in a fifth possible implementation manner, a mapping relationship between the group identifier and the priority value is performed by a proximity service function Prose Function Define and notify the user equipment or the base station equipment.

A fourth aspect of the embodiments of the present invention provides a method for group communication, including:

a report receiving module, configured to receive a buffer status report BSR sent by at least one user equipment, where the BSR carries at least one group index, where each group index corresponds to a group of at least one group in which the user equipment is located An identification code, each of the group index or each of the group identification codes being mapped to a predefined priority value;

a resource allocation module, configured to allocate time-frequency resources according to the user equipments with different priority values, so that each of the user equipments respectively allocates the time-frequency resources to respective groups, and when allocated to the respective groups Other user equipments in the group of frequency resources perform group communication.

In a first possible implementation manner of the fourth aspect, the base station device further includes:

The scheduling response module is configured to allocate, to the user equipment, a time-frequency resource required for sending the BSR, if the scheduling request SR sent by any user equipment is received.

With reference to the possible implementation manner of the fourth aspect, in a second possible implementation, the mapping between the group index and the priority value includes:

In combination with the fourth aspect and the second possible implementation of the fourth aspect, in a third possible implementation The base station device further includes:

The relationship notification module is configured to notify each user equipment by using a broadcast message, or an RRC message, or a non-access stratum NAS message, to map the relationship between the group index and the priority value.

With reference to the possible implementation manner of the fourth aspect, in a fourth possible implementation manner, the corresponding relationship between the group index and the group identifier is defined by each user equipment and passed a radio control protocol RRC message. Or reported by a non-access stratum NAS message.

With reference to the fourth aspect, and the fourth possible implementation manner of the fourth aspect, in a fifth possible implementation manner, a mapping relationship between the group identifier and the priority value is defined by a proximity service function Prose Function And notified by the proximity service function, or the specified user equipment, or the mobility management entity MME/Home Subscriber Server HSS.

A fifth aspect of the embodiments of the present invention provides a system for group communication, including at least one user equipment provided by the third aspect, and the base station device provided by the fourth aspect.

In the embodiment of the present invention, the user equipment carries at least one group index in the BSR sent by the base station device, where each group index corresponds to a group identifier of at least one group where the user equipment is located, and each group index Or each group identifier is mapped to a predefined priority value, so that the base station device allocates time-frequency resources according to the BSR and the predefined user equipment with different priority values, and each user equipment receives the time-frequency allocated thereto. After the resources are allocated, the allocated time-frequency resources are allocated to the respective groups in which they are located according to the predefined priority values, and then group communication is performed with other user equipments in the group allocated to the time-frequency resources, thereby ensuring the group. The resources required for group communication are allocated reasonably, and the time-frequency resources are not excessively allocated to user equipments and groups with smaller priority values, thereby improving service quality.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

1 is a schematic flowchart of a method for group communication according to an embodiment of the present invention;

2 is a schematic flowchart of another method for group group communication according to an embodiment of the present invention;

3 is a schematic flowchart of still another method for group communication according to an embodiment of the present invention;

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

FIG. 5 is a schematic structural diagram of a base station device according to an embodiment of the present disclosure;

6 is a schematic structural diagram of a system for group communication according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a scenario of group communication according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

It should be understood that the technical solutions of the embodiments of the present invention may be applied to various communication systems, such as a Long Term Evolution (LTE) system, and an OFDM Frequency Division Duplex (FDD). System, LTE Time Division Duplex ("TDD"), Universal Mobile Telecommunication System (UMTS) or Worldwide Interoperability for Microwave Access (referred to as "WiMAX") communication system, etc.

It should be understood that, in the embodiment of the present invention, a user equipment (User Equipment, referred to as "UE") may be referred to as a terminal (Mobile), a mobile station ("MS" for short) or a mobile terminal (Mobile Terminal). And so on, the user equipment can communicate with one or more core networks via a Radio Access Network ("RAN"), for example, the user equipment can be a mobile phone (or "cellular" phone) Or a computer with a mobile terminal, etc., for example, the user device can also be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges voice and/or data with the wireless access network. Correspondingly, the base station device may be an evolved base station (Evolutional Node B, referred to as "eNB") in LTE.

For the sake of understanding, the scenario of group communication in the embodiment of the present invention is first introduced. Referring to FIG. 7, the SRC UE indicates a source UE (ie, a UE transmitting data), and the DST UE indicates a target UE (ie, receiving data). UE), the dotted circle represents the group group, and the source UE and the target UE pass through the group The group communication is performed through the Sidelink Channel. In addition, it can be seen from the figure that the source UE and the target UE can be in different groups at the same time. As shown in the figure, the eNB indicates a base station device, and the source UE needs to request the time-frequency resource from the eNB to implement group communication with the target UE in the group.

FIG. 1 is a schematic flowchart of a method for group communication according to an embodiment of the present invention, where the method is applied to user equipment in a communication system. The flow of the method for group communication in this embodiment as shown in the figure may include:

S101. Send a buffer status report BSR to the base station device, where the BSR carries at least one group index, and each of the group indexes corresponds to a group identifier of at least one group where the user equipment is located, and each of the The group index or each of the group identifiers is mapped to a predefined priority value, so that the base station device allocates time-frequency resources according to the user equipment whose priority value is different.

In the LTE communication system, the Buffer Status Report (BSR) is used to report the Buffer Size of the UE to the eNB, that is, the required time-frequency resource. In the embodiment of the present invention, The eNB reports the required time-frequency resources of each group group in which the UE is located, so that the eNB allocates time-frequency resources for each group, for example, there are three groups in which the source UE is located, and Group1, Group2, and Group3 respectively need The time-frequency resources are a, b, and c. After the source UE sends the BSR to the eNB, the eNB allocates the time-frequency resources of a+b+c to the source UE, and the source UEs respectively allocate them to Group1, Group2, and Group3.

In order to ensure that the time-frequency resources required for the group communication are properly allocated, the limited time-frequency resources can be allocated to the group with higher priority as much as possible by means of the eNB control or the proximity service function Prose Function.

1 eNB control mode.

Specifically, the user equipment (source UE) sends a BSR to the base station device, where the BSR carries at least one group index, and each of the group indexes corresponds to a group identifier of at least one group where the user equipment is located, and each The group index is mapped to a predefined priority value. The group index is the information in the group index field in the BSR, and the group identifier can uniquely identify the group. It can be understood that different groups are distinguished by the group index field in the BSR, and each group index is mapped to one. A predefined priority value. For example, there are three groups in which the source UE is located, group IDs of group1, group2, and group3 are g1, g2, and g3, and the corresponding group indexes are Gi1, Gi2, and Gi3. The predefined priority values are Gi1=5, Gi2=3, and Gi3=1.

Correspondingly, the base station device receives the BSR sent by the at least one user equipment, and allocates the time-frequency resource according to the user equipment with different priority values. For example, the eNB receives the BSRs sent by the two source UEs, and the group index carried by the BSRs sent by the source UE1 is Gi1, Gi2, and Gi3, and the group index carried by the BSRs sent by the source UE2 has Gi4 and Gi5, and the predefined priorities. The value Gi1=5, Gi2=3, Gi3=1, Gi4=2, Gi5=4, and the time-frequency resources required for group1, group2, group3, group4, and group5 are all a, if the eNB has a+a+a The time-frequency resources are allocated for allocation, and the time-frequency resources allocated by the eNB for Gi1, Gi2, Gi3, Gi4, and Gi5 are 0, a, a, a, and 0, respectively, according to the order of priority values being small to large. The time-frequency resources allocated by the eNB for the source UE1 and the source UE2 are a+a and a, respectively.

2 Proximity service function Prose Function control mode.

Specifically, the user equipment (source UE) sends a BSR to the base station device, where the BSR carries at least one group index, and each of the group indexes corresponds to a group identifier of at least one group where the user equipment is located, and Different group identification codes are distinguished by a group index field in the BSR, and each group identification code is mapped to a predefined priority value. For example, there are three groups in which the source UE is located, group IDs of group1, group2, and group3 are g1, g2, and g3, and the corresponding group indexes are Gi1, Gi2, and Gi3, and the predefined priority value is g1=5. G2=3, g3=1.

Correspondingly, the base station device receives the BSR sent by the at least one user equipment, and allocates the time-frequency resource according to the user equipment with different priority values. For example, the eNB receives the BSRs sent by the two source UEs, and the group index carried by the BSRs sent by the source UE1 is Gi1, Gi2, and Gi3, and the group index carried by the BSRs sent by the source UE2 is Gi4 and Gi5, and Gi1, Gi2, and Gi The group identifiers corresponding to Gi4 and Gi5 are g1, g2, g3, g4, and g5, respectively, and the predefined priority values are g1=5, g2=3, g3=1, g4=2, g5=4, and group1. The time-frequency resources required by respectively, group2, group3, group4, and group5 are all a. If the eNB has a time-frequency resource of a+a+a for allocation, the eNB is g1 according to the priority value from small to large. The time-frequency resources allocated by g2, g3, g4, and g5 are 0, a, a, a, and 0, respectively. It can be seen that the time-frequency resources allocated by the eNB for the source UE1 and the source UE2 are a+a and a, respectively.

S102. Acquire, by the base station device, the time-frequency resource allocated by the user equipment.

Specifically, the user equipment (source UE) acquires all the groups in which the base station device is located by monitoring the physical downlink control channel (PDCCH) or the enhanced physical downlink control channel (ePDCCH). The sum of the allocated time-frequency resources.

S103. Allocate the time-frequency resource to the group where the user equipment is located according to the priority value.

For example, suppose that the user equipment (source UE) has three groups, the group identifiers of group1, group2, and group3 are g1, g2, and g3, and the corresponding group indexes are Gi1, Gi2, and Gi3, and the predefined priorities are The value Gi1=5, Gi2=3, Gi3=1, or the predefined priority value g1=5, g2=3, g3=1, and the time-frequency resources required for group1, group2, and group3 are all a, and the eNB is The allocated time-frequency resources are only a+a in total, and the time-frequency resources allocated by the user equipment for group1, group2, and group3 are 0, a, and a, according to the order of priority values.

S104. Perform group communication with other user equipments in the group allocated to the time-frequency resource.

For example, if the time-frequency resources allocated by group1, group2, and group3 are 0, a, and a, then the source UE performs group communication with the target UE in group2 and the target UE in group3.

2 is a schematic flowchart of a method for communication of another group group in the embodiment of the present invention, and specifically describes a group communication method based on an eNB management mode, which is applied to user equipment and base station equipment in a communication system. Can include:

S201: The base station device notifies each user equipment by using a broadcast message, a radio control protocol RRC message, or a non-access stratum NAS message to map the relationship between the group index and the priority value.

The English name of RRC is called Radio Resource Control, and the English name of NAS is called Non-Access Stratum. The priority value is predefined and may be defined by a base station device. It can also be defined by the designer and is not limited here.

S202. The user equipment determines whether there is a time-frequency resource required for sending the BSR.

Specifically, the user equipment (source UE) determines whether there is currently a time-frequency resource required for transmitting the BSR. If not, step S203 is performed, and if yes, step S205 is performed.

S203. The user equipment sends a scheduling request SR to the base station device.

The English name of the SR is called the Scheduling Request. Specifically, the user equipment (source UE) sends a scheduling request SR to the base station device to request allocation of time-frequency resources.

S204. The base station device allocates a time-frequency resource required for sending the BSR to the user equipment, if it receives a scheduling request SR sent by any user equipment.

S205, the user equipment sends a buffer status report BSR to the base station device, where the BSR carries at least one group index, and each of the group indexes corresponds to a group identifier of at least one group where the user equipment is located, and each The group index is mapped to a predefined priority value.

Specifically, the user equipment (source UE) sends a BSR to the base station device, where the BSR carries at least one group index, and each of the group indexes corresponds to a group identifier of at least one group where the user equipment is located, and each The group index is mapped to a predefined priority value. The group index is the information in the group index field in the BSR, and the group identifier can uniquely identify the group. It can be understood that different groups are distinguished by the group index field in the BSR, and each group index is mapped to one. A predefined priority value. For example, there are three groups in which the source UE is located, group IDs of group1, group2, and group3 are g1, g2, and g3, and the corresponding group indexes are Gi1, Gi2, and Gi3, and the predefined priority value is Gi1=5. Gi2=3, Gi3=1.

Optionally, the same group index is mapped to the same priority value, and the group index corresponding to the group of the same service type is the same. It can be understood that the source UE groups the groups with the same service type into the same group index.

S206. The base station device receives a buffer status report BSR sent by at least one user equipment.

S207. The base station device allocates a time-frequency resource according to the user equipment whose priority value is different.

For example, the eNB receives the BSRs sent by the two source UEs, and the group index carried by the BSRs sent by the source UE1 is Gi1, Gi2, and Gi3, and the group index carried by the BSRs sent by the source UE2 has Gi4 and Gi5, and the predefined priorities. The value Gi1=5, Gi2=3, Gi3=1, Gi4=2, Gi5=4, and the time-frequency resources required for group1, group2, group3, group4, and group5 are all a, if the eNB has a+a+a Time The frequency resource is used for allocation, and the time-frequency resources allocated by the eNB for Gi1, Gi2, Gi3, Gi4, and Gi5 are 0, a, a, a, and 0, respectively, according to the order of the priority values, and the eNB is The time-frequency resources allocated by the source UE1 and the source UE2 are respectively a+a and a.

S208. The user equipment acquires the time-frequency resource allocated by the base station device to the user equipment.

S209. The user equipment allocates the time-frequency resource to the group where the user equipment is located according to the priority value.

For example, suppose that the user equipment (source UE) has three groups, the group identifiers of group1, group2, and group3 are g1, g2, and g3, and the corresponding group indexes are Gi1, Gi2, and Gi3, and the predefined priorities are The value Gi1=5, Gi2=3, Gi3=1, the time-frequency resources required by group1, group2, and group3 are all a, and the time-frequency resources allocated by the eNB are only a+a, then the value is small according to the priority value. In the large order, the time-frequency resources allocated by the user equipment for group1, group2, and group3 are 0, a, and a.

S210. The user equipment performs group communication with other user equipments in the group that are allocated to the time-frequency resource.

In the embodiment of the present invention, the user equipment carries at least one group index in the BSR sent by the base station device, where each group index corresponds to a group identifier of at least one group where the user equipment is located, and each group index Mapping to a predefined priority value, so that the base station device allocates time-frequency resources according to the BSR and the predefined user equipment with different priority values, and each user equipment receives the time-frequency resource allocated thereto, and then according to the predefined The priority value assigns the allocated time-frequency resources to each group in which they are located, and then performs group communication with other user equipments in the group allocated to the time-frequency resource, thereby ensuring resources required for group communication. Reasonable allocation to avoid excessive allocation of time-frequency resources to user equipment and groups with lower priority values to improve service quality.

3 is a schematic flowchart of another method for group communication according to an embodiment of the present invention, and specifically describes a group communication method based on a Prose Function management mode, which is applied to user equipment and base station equipment in a communication system, Can include:

S301: The user equipment defines a correspondence between the group index and the group identifier, and reports the information to the base station device by using a radio control protocol RRC message or a non-access stratum NAS message.

The English name of RRC is called Radio Resource Control, and the English name of NAS is called Non-Access Stratum.

In addition, the relationship between the group identification code and the priority value is defined by the proximity service function Prose Function and notified to the user equipment or the base station device.

Correspondingly, the eNB obtains the mapping between the group identifier and the priority value from the Prose Function through the predefined interface, and can also pass the mobility management entity MME (Mobility Management Entity)/Home Subscriber Server (HSS). The related interface of the Home Subscriber Server is obtained from the LSP message sent by the source UE (required that the source UE first acquires from the related interface of the Prose Function).

S302. The user equipment determines whether there is a time-frequency resource required for sending the BSR.

Specifically, the user equipment (source UE) determines whether there is currently a time-frequency resource required for transmitting the BSR. If not, step S303 is performed, and if yes, step S305 is performed.

S303. The user equipment sends a scheduling request SR to the base station device.

S304. The base station device allocates a time-frequency resource required for sending the BSR to the user equipment, if it receives a scheduling request SR sent by any user equipment.

S305, the user equipment sends a buffer status report BSR to the base station device, where the BSR carries at least one group index, and each of the group indexes corresponds to a group identifier of at least one group where the user equipment is located, and each The group identification code is mapped to a predefined priority value.

Specifically, the user equipment (source UE) sends a BSR to the base station device, where the BSR carries at least one group index, and each of the group indexes corresponds to a group identifier of at least one group where the user equipment is located, and Different group identification codes are distinguished by a group index field in the BSR, and each group identification code is mapped to a predefined priority value. For example, there are 3 groups in which the source UE is located. The group identification codes of group1, group2, and group3 are g1, g2, and g3, and the corresponding group indexes are Gi1, Gi2, and Gi3, and the predefined priority values are g1=5, g2=3, and g3=1.

S306. The base station device receives a buffer status report BSR sent by at least one user equipment.

S307. The base station device allocates a time-frequency resource according to the user equipment whose priority value is different.

For example, the eNB receives the BSRs sent by the two source UEs, and the group index carried by the BSRs sent by the source UE1 is Gi1, Gi2, and Gi3, and the group index carried by the BSRs sent by the source UE2 is Gi4 and Gi5, and Gi1, Gi2, and Gi The group identifiers corresponding to Gi4 and Gi5 are g1, g2, g3, g4, and g5, respectively, and the predefined priority values are g1=5, g2=3, g3=1, g4=2, g5=4, and group1. The time-frequency resources required by respectively, group2, group3, group4, and group5 are all a. If the eNB has a time-frequency resource of a+a+a for allocation, the eNB is g1 according to the priority value from small to large. The time-frequency resources allocated by g2, g3, g4, and g5 are 0, a, a, a, and 0, respectively. It can be seen that the time-frequency resources allocated by the eNB for the source UE1 and the source UE2 are a+a and a, respectively.

S308. The user equipment acquires the time-frequency resource allocated by the base station device to the user equipment.

S309. The user equipment allocates the time-frequency resource to the group where the user equipment is located according to the priority value.

For example, suppose that the user equipment (source UE) has three groups, the group identifiers of group1, group2, and group3 are g1, g2, and g3, and the corresponding group indexes are Gi1, Gi2, and Gi3, and the predefined priorities are The value g1=5, g2=3, g3=1, the time-frequency resources required by group1, group2, and group3 are all a, and the time-frequency resources allocated by the eNB are only a+a, then the value is small according to the priority value. In the large order, the time-frequency resources allocated by the user equipment for group1, group2, and group3 are 0, a, and a.

S310. The user equipment performs group communication with other user equipments in the group that are allocated to the time-frequency resource.

In the embodiment of the present invention, the user equipment carries at least one group index in the BSR sent by the base station device, where each group index corresponds to a group identifier of at least one group in which the user equipment is located, and each group identifier The code is mapped to a predefined priority value, so that the base station device allocates time-frequency resources according to the BSR and the predefined priority value of the user equipment, and each user equipment receives the time-frequency resource allocated thereto, and then according to the pre- The defined priority value allocates the allocated time-frequency resources to each group in which they are located, and then performs group communication with other user equipments in the group allocated to the time-frequency resource, thereby ensuring resources required for group communication. A reasonable allocation is made to avoid excessive allocation of time-frequency resources to user equipments and groups with lower priority values, thereby improving service quality.

FIG. 4 is a schematic structural diagram of a user equipment according to an embodiment of the present invention. The user equipment in the embodiment of the present invention may include at least a report sending module 410, a resource obtaining module 420, a resource allocating module 430, and a group communication module 440, where:

The report sending module 410 is configured to send a buffer status report BSR to the base station device, where the BSR carries at least one group index, and each of the group indexes corresponds to a group identifier of at least one group where the user equipment is located. Each of the group index or each of the group identifiers is mapped to a predefined priority value, so that the base station device allocates time-frequency resources according to the user equipment whose priority value is different.

1 eNB control mode.

Specifically, the report sending module 410 sends a BSR to the base station device, where the BSR carries at least one a group index, each of the group indexes corresponding to a group identifier of at least one group in which the user equipment is located, each of the group indexes being mapped to a predefined priority value. The group index is the information in the group index field in the BSR, and the group identifier can uniquely identify the group. It can be understood that different groups are distinguished by the group index field in the BSR, and each group index is mapped to one. A predefined priority value. For example, there are three groups in which the source UE is located, group IDs of group1, group2, and group3 are g1, g2, and g3, and the corresponding group indexes are Gi1, Gi2, and Gi3, and the predefined priority value is Gi1=5. Gi2=3, Gi3=1.

2 Proximity service function Prose Function control mode.

Specifically, the report sending module 410 sends a BSR to the base station device, where the BSR carries at least one group index, and each of the group indexes corresponds to a group identifier of at least one group where the user equipment is located, and is different. The group identification code is distinguished by a group index field in the BSR, and each group identification code is mapped to a predefined priority value. For example, there are three groups in which the source UE is located, group IDs of group1, group2, and group3 are g1, g2, and g3, and the corresponding group indexes are Gi1, Gi2, and Gi3, and the predefined priority value is g1=5. G2=3, g3=1.

Correspondingly, the base station device receives the BSR sent by the at least one user equipment, and allocates the time-frequency resource according to the user equipment with different priority values. For example, the eNB receives the BSRs sent by the two source UEs, and the group index carried by the BSRs sent by the source UE1 is Gi1, Gi2, and Gi3, and the group index carried by the BSRs sent by the source UE2 is Gi4 and Gi5, and Gi1, Gi2, and Gi The group identifiers corresponding to Gi4 and Gi5 are g1, g2, g3, g4, and g5, respectively, and the predefined priority values are g1=5, g2=3, g3=1, g4=2, g5=4, and group1. The time-frequency resources required by group, group2, group3, group4, and group5 are all a. If the eNB has a time-frequency resource of a+a+a for allocation, then the priority value is small to large. The time-frequency resources allocated by the eNB for g1, g2, g3, g4, and g5 are 0, a, a, a, and 0, respectively. It can be seen that the time-frequency resources allocated by the eNB for the source UE1 and the source UE2 are a+a and a.

The resource obtaining module 420 is configured to acquire the time-frequency resource allocated by the base station device to the user equipment.

Specifically, the resource acquisition module 420 acquires a Physical Downlink Control Channel (PDCCH) or an Enhanced Physical Downlink Control Channel (ePDCCH) to obtain an allocation of all the groups in which the base station device is located. The sum of time-frequency resources.

The resource allocation module 430 is configured to allocate the time-frequency resource to the group where the user equipment is located according to the priority value.

For example, suppose that the user equipment (source UE) has three groups, the group identifiers of group1, group2, and group3 are g1, g2, and g3, and the corresponding group indexes are Gi1, Gi2, and Gi3, and the predefined priorities are The value Gi1=5, Gi2=3, Gi3=1, or the predefined priority value g1=5, g2=3, g3=1, and the time-frequency resources required for group1, group2, and group3 are all a, and the eNB is The allocated time-frequency resources only have a+a in total, and the time-frequency resources allocated by the resource allocation module 430 for group1, group2, and group3 are 0, a, and a, according to the order of priority values.

The group communication module 440 is configured to perform group communication with other user equipments in the group allocated to the time-frequency resource.

For example, if the time-frequency resources allocated by group1, group2, and group3 are 0, a, a, then the group communication module 440 performs group communication with the target UE in group2 and the target UE in group3.

Optionally, referring to FIG. 4, the user equipment in the embodiment of the present invention may further include a scheduling request module 450, configured to determine whether there is a time-frequency resource required for sending the BSR, and if not, to The base station device sends a scheduling request SR, so that the base station device allocates time-frequency resources required for sending the BSR to the user equipment.

FIG. 5 is a schematic structural diagram of a base station device according to an embodiment of the present invention. The base station device in the embodiment of the present invention may include at least a report receiving module 510 and a resource allocating module 520, where:

The report receiving module 510 is configured to receive a buffer status report sent by at least one user equipment. a BSR, where the BSR carries at least one group index, each of the group indexes corresponding to a group identifier of at least one group in which one user equipment is located, and each of the group indexes or each of the groups The identification code is mapped to a predefined priority value.

1 eNB control mode.

The user equipment (source UE) sends a BSR to the base station device, where the BSR carries at least one group index, and each of the group indexes corresponds to a group identifier of at least one group in which the user equipment is located, and each of the The group index is mapped to a predefined priority value. The group index is the information in the group index field in the BSR, and the group identifier can uniquely identify the group. It can be understood that different groups are distinguished by the group index field in the BSR, and each group index is mapped to one. A predefined priority value. For example, there are three groups in which the source UE is located, group IDs of group1, group2, and group3 are g1, g2, and g3, and the corresponding group indexes are Gi1, Gi2, and Gi3, and the predefined priority value is Gi1=5. Gi2=3, Gi3=1. Specifically, the report receiving module 510 receives the BSR sent by at least one user equipment.

2 Proximity service function Prose Function control mode.

The user equipment (source UE) sends a BSR to the base station device, where the BSR carries at least one group index, and each of the group indexes corresponds to a group identifier of at least one group in which the user equipment is located, and different groups are The group identification code is distinguished by a group index field in the BSR, and each group identification code is mapped to a predefined priority value. For example, there are three groups in which the source UE is located, group IDs of group1, group2, and group3 are g1, g2, and g3, and the corresponding group index is Gi1. Gi2 and Gi3, predefined priority values g1=5, g2=3, g3=1. Specifically, the report receiving module 510 receives the BSR sent by at least one user equipment.

The resource allocation module 520 is configured to allocate time-frequency resources according to the user equipments with different priority values, so that each of the user equipments respectively allocates the time-frequency resources to respective groups, and allocates to the Other user equipments in the group of time-frequency resources perform group communication.

1 eNB control mode.

For example, the report receiving module 510 receives the BSRs sent by the two source UEs, and the group index carried by the BSRs sent by the source UE1 is Gi1, Gi2, and Gi3, and the group indexes carried by the BSRs sent by the source UE2 are Gi4 and Gi5, and are predefined. The priority value of Gi1=5, Gi2=3, Gi3=1, Gi4=2, Gi5=4, and the time-frequency resources required for group1, group2, group3, group4, and group5 are all a, if the eNB has a+ The time-frequency resources of a+a are used for allocation, and the time-frequency resources allocated by the resource allocation module 520 for Gi1, Gi2, Gi3, Gi4, and Gi5 are 0, a, a, respectively, according to the order of priority values being small to large. a, 0, and further, the time-frequency resources allocated by the resource allocation module 520 for the source UE1 and the source UE2 are a+a and a, respectively.

2 Proximity service function Prose Function control mode.

For example, the report receiving module 510 receives the BSRs sent by the two source UEs, and the group index carried by the BSRs sent by the source UE1 is Gi1, Gi2, and Gi3, and the group index carried by the BSRs sent by the source UE2 is Gi4 and Gi5, Gi1. The group identification codes corresponding to Gi2, Gi, Gi4, and Gi5 are g1, g2, g3, g4, and g5, respectively, and the predefined priority values are g1=5, g2=3, g3=1, g4=2, and g5=4. And the time-frequency resources required by group1, group2, group3, group4, and group5 are all a. If the eNB has a time-frequency resource of a+a+a for allocation, then according to the order of priority values from small to large, The time-frequency resources allocated by the resource allocation module 520 for g1, g2, g3, g4, and g5 are 0, a, a, a, and 0, respectively. Further, the time-frequency resources allocated by the resource allocation module 520 for the source UE1 and the source UE2 are respectively a+a and a.

Further, the user equipment (source UE) acquires all the groups in which the base station device is located by monitoring the physical downlink control channel (PDCCH) or the enhanced physical downlink control channel (ePDCCH). The sum of the allocated time-frequency resources, and then the time-frequency resource is allocated to the group in which the user equipment is located according to the priority value. For example, suppose that the user equipment (source UE) has three groups, and the group identifiers of group1, group2, and group3 are g1, g2, and g3, and their corresponding groups. The group index is Gi1, Gi2 and Gi3, the predefined priority values Gi1=5, Gi2=3, Gi3=1, or the predefined priority values g1=5, g2=3, g3=1, group1, group2 and group3 respectively The required time-frequency resources are all a, and the time-frequency resources allocated by the eNB are only a+a, and the time-frequency resources allocated by the user equipment for group1, group2, and group3 are in the order of priority values being small to large. 0, a, a.

Further, the user equipment performs group communication with other user equipments in the group allocated to the time-frequency resource. For example, if the time-frequency resources allocated by group1, group2, and group3 are 0, a, and a, then the source UE performs group communication with the target UE in group2 and the target UE in group3.

Optionally, referring to FIG. 5, the base station device in the embodiment of the present invention may further include a scheduling requesting module 530, configured to allocate the scheduling request SR sent by any user equipment to the user equipment. The time-frequency resource required to send the BSR.

Optionally, referring to FIG. 5, the base station device in the embodiment of the present invention may further include a relationship notification module 540, configured to map a relationship between the group index and the priority value. Each of the user equipments is notified by a broadcast message, or an RRC message, or a non-access stratum NAS message.

FIG. 6 is a schematic structural diagram of a system for group communication according to an embodiment of the present invention. The system for group communication in the embodiment of the present invention as shown in the figure may include at least one user equipment 610 and a base station device 620, where:

The user equipment 610 is a user equipment as described above with reference to FIG. 4, and is configured to send a buffer status report BSR to the base station apparatus 620, where the BSR carries at least one group index, and each group index corresponds to the user equipment 610. a group identifier of at least one group, each group index or each group identifier is mapped to a predefined priority value; acquiring a time-frequency resource allocated by the base station device 620 for the user equipment 610; The level value allocates a time-frequency resource for the group in which the user equipment 610 is located; and performs group communication with other user equipments in the group allocated to the time-frequency resource.

The base station device 620 is a base station device as described above with reference to FIG. 5, and is configured to receive a buffer status report BSR sent by at least one user equipment 610; and allocate time-frequency resources according to different user equipments 610 with different priority values.

One of ordinary skill in the art can understand that all or part of the process of implementing the foregoing embodiments can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. When executed, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

The steps in the method of the embodiment of the present invention may be sequentially adjusted, merged, and deleted according to actual needs.

The modules in the apparatus of the embodiment of the present invention may be combined, divided, and deleted according to actual needs.

The module in the embodiment of the present invention may be implemented by a general-purpose integrated circuit, such as a CPU (Central Processing Unit) or an ASIC (Application Specific Integrated Circuit).

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and thus equivalent changes made in the claims of the present invention are still within the scope of the present invention.

Claims

A method for group communication, wherein the method is applied to a terminal side, and the method includes:

And sending, to the base station device, a buffer status report BSR, where the BSR carries at least one group index, where each of the group indexes corresponds to a group identifier of at least one group where the user equipment is located, and each of the groups The index or each of the group identifiers is mapped to a predefined priority value, so that the base station device allocates time-frequency resources according to the user equipment whose priority value is different;

Obtaining, by the base station device, the time-frequency resource allocated by the user equipment;

Allocating the time-frequency resource to the group where the user equipment is located according to the priority value;

Group communication with other user equipment in the group assigned to the time-frequency resource.
The method according to claim 1, wherein before the sending the buffer status report BSR to the base station device, the method further includes:

Determining whether there is a time-frequency resource required for transmitting the BSR, and if not, transmitting a scheduling request SR to the base station device, so that the base station device allocates a time-frequency resource required for sending the BSR to the user equipment.
The method of claim 1, wherein the mapping between the group index and the priority value comprises:

The same group index is mapped to the same priority value, wherein the group index corresponding to the group of the same service type is the same.
The method according to claim 3, wherein the mapping between the group index and the priority value is performed by the base station device by using a broadcast message, or a radio resource control protocol RRC message, or Access layer NAS message notification.
The method according to claim 1, wherein the relationship between the group index and the group identification code is defined by the user equipment and passed a wireless control protocol RRC message or The non-access stratum NAS message is reported to the base station device.
The method according to claim 5, wherein the relationship between the group identification code and the priority value is defined by the proximity service function Prose Function and notified to the user equipment or the base station device of.
A method for group communication, wherein the method is applied to a base station side, and the method includes:

Receiving, by the at least one user equipment, a buffer status report BSR, where the BSR carries at least one group index, and each of the group indexes corresponds to a group identifier of at least one group where the user equipment is located, where each Decoding the group index or each of the group identifiers to a predefined priority value;

Allocating time-frequency resources according to the user equipments with different priority values, so that each of the user equipments respectively allocates the time-frequency resources to respective groups, and the group allocated to the time-frequency resources Other user devices in the group perform group communication.
The method of claim 7, wherein before receiving the BSR sent by the at least one user equipment, the method further includes:

If the scheduling request SR sent by any user equipment is received, the user equipment is allocated the time-frequency resource required for sending the BSR.
The method of claim 7, wherein the mapping between the group index and the priority value comprises:

The same group index is mapped to the same priority value, wherein the group index corresponding to the group of the same service type is the same.
The method according to claim 9, wherein before receiving the BSR sent by the at least one user equipment, the method further includes:

Mapping the relationship between the group index and the priority value, by broadcasting a message, or wirelessly The control protocol RRC message, or the non-access stratum NAS message, notifies each of the user equipments.
The method according to claim 7, wherein the relationship between the group index and the group identification code is defined by each of the user equipments and passed through a radio control protocol RRC message or a non-access layer. The NAS message was reported.
The method according to claim 11, wherein the relationship between the group identification code and the priority value is defined by a proximity service function Prose Function and is specified by the proximity service function, or specified The user equipment, or the mobility management entity MME/Home Subscriber Server HSS is notified.
A user equipment, where the user equipment includes:

a report sending module, configured to send a buffer status report BSR to the base station device, where the BSR carries at least one group index, and each of the group indexes corresponds to a group identifier of at least one group where the user equipment is located, Each of the group index or each of the group identifiers is mapped to a predefined priority value, so that the base station device allocates time-frequency resources according to the user equipment whose priority value is different;

a resource obtaining module, configured to acquire the time-frequency resource allocated by the base station device to the user equipment;

a resource allocation module, configured to allocate the time-frequency resource to the group where the user equipment is located according to the priority value;

a group communication module, configured to perform group communication with other user equipments in the group allocated to the time-frequency resource.
The user equipment of claim 13, wherein the user equipment further comprises:

a scheduling requesting module, configured to determine whether there is a time-frequency resource required for sending the BSR, and if not, sending a scheduling request SR to the base station device, so that the base station device allocates, to the user equipment, the required to send the BSR Time-frequency resources.
The user equipment of claim 13, wherein the mapping between the group index and the priority value comprises:

The same group index is mapped to the same priority value, wherein the group index corresponding to the group of the same service type is the same.
The user equipment according to claim 15, wherein the mapping between the group index and the priority value is performed by the base station device by using a broadcast message, or a RRC message, or Non-access stratum NAS message notification.
The user equipment according to claim 13, wherein the relationship between the group index and the group identification code is defined by the user equipment and is through a radio control protocol RRC message or a non-access stratum NAS. The message is reported to the base station device.
The user equipment according to claim 17, wherein the relationship between the group identification code and the priority value is defined by the proximity service function Prose Function and notified to the user equipment or the base station. equipment.
A base station device, where the base station device includes:

a report receiving module, configured to receive a buffer status report BSR sent by at least one user equipment, where the BSR carries at least one group index, where each group index corresponds to a group of at least one group in which the user equipment is located An identification code, each of the group index or each of the group identification codes being mapped to a predefined priority value;

a resource allocation module, configured to allocate time-frequency resources according to the user equipments with different priority values, so that each of the user equipments respectively allocates the time-frequency resources to respective groups, and when allocated to the respective groups Other user equipments in the group of frequency resources perform group communication.
The base station device according to claim 19, wherein the base station device further comprises:

The scheduling response module is configured to allocate, to the user equipment, a time-frequency resource required for sending the BSR, if the scheduling request SR sent by any user equipment is received.
The base station device according to claim 19, wherein the mapping between the group index and the priority value comprises:

The same group index is mapped to the same priority value, wherein the group index corresponding to the group of the same service type is the same.
The base station device according to claim 21, wherein the base station device further comprises:

The relationship notification module is configured to notify each user equipment by using a broadcast message, or a radio control protocol RRC message, or a non-access stratum NAS message, to map the relationship between the group index and the priority value.
The base station device according to claim 19, wherein a relationship between the group index and the group identification code is defined by each of the user equipments and is RRC message or non-access through a radio control protocol. The layer NAS message is reported.
The base station device according to claim 23, wherein a relationship between the group identification code and the priority value is defined by a proximity service function Prose Function, and is performed by the proximity service function, or The specified user equipment, or the mobility management entity MME/Home Subscriber Server HSS is notified.
A system for group communication, characterized in that the system comprises at least one user equipment according to any of claims 13-18, and a base station device according to any of claims 19-24.