WO2016045083A1

WO2016045083A1 - Communication method and user device

Info

Publication number: WO2016045083A1
Application number: PCT/CN2014/087536
Authority: WO
Inventors: 刘德平; 李强
Original assignee: 华为技术有限公司
Priority date: 2014-09-26
Filing date: 2014-09-26
Publication date: 2016-03-31
Also published as: CN105637961A

Abstract

Provided are a communication method and a user device, the method comprising: a first user device receives resource pool indication information sent by a base station, the first user device being located within the service range of the base station; the first user device sends the resource pool indication information to a second user device, the second user device not being located within the service range of any base station; the first user device receives a device-to-device (D2D) message sent by the second user device, the D2D message being sent by the second user device using time-frequency resources in a resource pool indicated by the resource pool indication information. Via the described technical solution, in a partial network coverage scenario, a user device located outside base station service may utilise device-to-device technology to perform normal communication with a user device located within a base station service range. In addition, time-frequency resources to be monitored by the user device located within the base station service range may be reduced.

Description

Communication method and user equipment

Technical field

Embodiments of the present invention relate to the field of communications technologies, and, more particularly, to a communication method and user equipment.

Background technique

In the traditional communication technology, the signaling and data interaction between the user equipment (English equipment) is required to go through the respective base stations.

Device to Device (English: Device to Device, D2D for short) technology is a direct communication technology. Data interaction between UEs does not need to be forwarded by the base station. The UEs can directly interact with each other or directly interact with the network.

In the prior art, the application of the D2D can be added to the existing communication system, that is, the D2D and the conventional wireless communication can coexist. As shown in FIG. 1, the UE1 101 can send the D2D data to the UE2 102 and the UE3 103 for D2D, and the UE1 also Communication can be made with the base station 100. The process in which the UE1 101 transmits the communication data and the base station 100 receives the communication data is referred to as uplink communication; the process in which the base station 100 transmits the communication data, and the UE1 101 receives the communication data is referred to as downlink communication; the UE1 101 serves as the data sender, and the UE2 102 and the UE3 The communication between the UE and the UE performed by 103 is D2D.

D2D has three working scenarios: network coverage, no network coverage, and partial network coverage. In the working scenario of network coverage, the user equipment participating in D2D is within the service range of the base station. In a scenario without network coverage, the user equipment participating in the D2D is outside the range of the base station service. In a scenario where part of the network is covered, part of the user equipment participating in the D2D is within the service range of the base station, and another part of the user equipment is outside the service range of the base station.

When part of the network covers the scenario, how to perform D2D for the user equipment in the service area of the base station and the user equipment outside the service range of the base station is a problem to be solved.

Summary of the invention

The embodiment of the present invention provides a communication method and a user equipment, which can enable a network-free user equipment in a part of the network coverage scenario to perform normal D2D, and reduce time-frequency resources that the user equipment in the service area of the base station needs to monitor.

In a first aspect, an embodiment of the present invention provides a user equipment, where the user equipment includes: And a sending unit, configured to send the resource pool indication information received by the receiving unit to the second user equipment, where the The second user equipment is not located in the service range of any one of the base stations; the receiving unit is further configured to receive the D2D message sent by the second user equipment, where the D2D message is indicated by the second user equipment by using the resource pool indication information The time-frequency resource in the resource pool is sent.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the resource pool indication information received by the receiving unit is used to indicate a resource pool of mode 2 of D2D communication and a resource pool of type 1 of D2D discovery. At least one resource pool, wherein the mode 2 of the D2D communication refers to that the user equipment selects data for transmitting direct communication from the resource pool, and the type 1 of the D2D discovery refers to multiple user equipments for The resource pool discovered by D2D is configured by the base station.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the resource pool of the mode 2 of the D2D communication indicated by the resource pool indication information received by the receiving unit is a resource pool for transmitting a message of mode 2 of the D2D communication, the resource pool of the type 1 of the D2D discovery indicated by the resource pool indication information received by the receiving unit is a type 1 resource for sending a message of the D2D discovery Pool.

With reference to the first aspect or any one of the foregoing possible implementation manners of the first aspect, in a third possible implementation manner of the first aspect, the sending unit is specifically configured to use a physical D2D synchronization channel, a D2D discovery channel, and a D2D At least one of the communication channels transmits the resource pool indication information to the second user equipment.

With reference to the first aspect, or any one of the foregoing possible implementation manners of the first aspect, in a fourth possible implementation manner of the first aspect, the receiving unit is further configured to receive request information sent by the second user equipment.

In a second aspect, the embodiment of the present invention provides a user equipment, where the user equipment includes: a receiving unit, configured to receive resource pool indication information sent by the first user equipment, where the first user equipment is located in a service range of the base station, The user equipment is not located in the service area of any one of the base stations; the sending unit is configured to send the D2D message to the first user equipment by using the time-frequency resource in the resource pool indicated by the resource pool indication information received by the receiving unit.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the resource pool indication information received by the receiving unit is used to indicate a resource pool of mode 2 of D2D communication and a resource pool of type 1 of D2D discovery. At least one resource pool, wherein mode 2 of the D2D communication refers to user equipment selecting data and scheduling allocation message for transmitting direct communication from the resource pool, the D2D is sent The current type 1 means that the resource pool for D2D discovery of multiple user equipments is configured by the base station.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the resource pool of the mode 2 of the D2D communication indicated by the resource pool indication information received by the receiving unit is a resource pool for transmitting a message of mode 2 of the D2D communication, the resource pool of the type 1 of the D2D discovery indicated by the resource pool indication information received by the receiving unit is a resource pool for transmitting a message of type 1 discovered by the D2D .

With reference to the second aspect or any one of the foregoing possible implementation manners of the second aspect, in a third possible implementation manner of the second aspect, the receiving unit is specifically configured to use a physical D2D synchronization channel, a D2D discovery channel, and a D2D At least one of the communication channels receives the resource pool indication information sent by the first user equipment.

With reference to the second aspect or any one of the foregoing possible implementation manners of the second aspect, in a fourth possible implementation manner of the second aspect, the sending unit is further configured to send the request information to the first user equipment.

In a third aspect, the embodiment of the present invention provides a user equipment, where the user equipment includes: a receiver, configured to receive resource pool indication information sent by a base station, where the user equipment is located in a service range of the base station; The resource pool indication information received by the receiver is sent to the second user equipment, where the second user equipment is not located in the service range of any one of the base stations; the receiver is further configured to receive the D2D sent by the second user equipment The message, the D2D message is sent by the second user equipment by using the time-frequency resource in the resource pool indicated by the resource pool indication information.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the resource pool indication information received by the receiver is used to indicate a resource pool of mode 2 of D2D communication and a resource pool of type 1 of D2D discovery. At least one resource pool, wherein the mode 2 of the D2D communication refers to that the user equipment selects data for transmitting direct communication from the resource pool, and the type 1 of the D2D discovery refers to multiple user equipments for The resource pool discovered by D2D is configured by the base station.

With reference to the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, the resource pool of the mode 2 of the D2D communication indicated by the resource pool indication information received by the receiver is a resource pool for transmitting a message of mode 2 of the D2D communication, the resource pool of the type 1 of the D2D discovery indicated by the resource pool indication information received by the receiver is a type 1 resource for sending a message of the D2D discovery Pool.

With the third aspect or any one of the foregoing possible implementation manners of the third aspect, in a third possible implementation manner of the third aspect, the transmitter is specifically configured to use a physical D2D synchronization channel, At least one of the D2D discovery channel and the D2D communication channel sends the resource pool indication information to the second user equipment.

With reference to the third aspect or any one of the foregoing possible implementation manners of the third aspect, in a fourth possible implementation manner of the third aspect, the receiver is further configured to receive the request information sent by the second user equipment.

In a fourth aspect, the embodiment of the present invention provides a user equipment, where the user equipment includes: a receiver, configured to receive resource pool indication information sent by the first user equipment, where the first user equipment is located in a service range of the base station, The user equipment is not located in the service area of any one of the base stations; the transmitter is configured to send the D2D message to the first user equipment by using the time-frequency resource in the resource pool indicated by the resource pool indication information received by the receiver.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the resource pool indication information received by the receiver is used to indicate a resource pool of mode 2 of D2D communication and a resource pool of type 1 of D2D discovery. At least one resource pool, wherein the mode 2 of the D2D communication refers to that the user equipment selects data for transmitting direct communication from the resource pool, and the type 1 of the D2D discovery refers to multiple user equipments for The resource pool discovered by D2D is configured by the base station.

With reference to the first possible implementation manner of the fourth aspect, in a second possible implementation manner of the fourth aspect, the resource pool of the mode 2 of the D2D communication indicated by the resource pool indication information received by the receiver is a resource pool for transmitting a message of mode 2 of the D2D communication, the resource pool of the type 1 of the D2D discovery indicated by the resource pool indication information received by the receiver is a resource pool for sending a message of type 1 discovered by the D2D .

With reference to the fourth aspect, or any one of the foregoing possible implementation manners of the fourth aspect, in a third possible implementation manner of the fourth aspect, the receiver is specifically configured to use a physical D2D synchronization channel, a D2D discovery channel, and a D2D At least one of the communication channels receives the resource pool indication information sent by the first user equipment.

With reference to the fourth aspect, or any one of the foregoing possible implementation manners of the fourth aspect, in a fourth possible implementation manner of the fourth aspect, the transmitter is further configured to send the request information to the first user equipment.

In a fifth aspect, the embodiment of the present invention provides a communication method, where the method includes: receiving, by a first user equipment, resource pool indication information sent by a base station, where the first user equipment is located in a service range of the base station; The resource pool indication information is sent to the second user equipment, where the second user equipment is not located in the service range of any one of the base stations; the first user equipment receives the second user equipment The D2D message sent by the user equipment, where the D2D message is sent by the second user equipment by using the time-frequency resource in the resource pool indicated by the resource pool indication information.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect, the resource pool indication information is used to indicate a resource pool of mode 2 of the D2D communication and at least one resource of the type 1 resource pool of the D2D discovery. The pool, wherein the mode 2 of the D2D communication refers to that the user equipment selects data for transmitting direct communication and the scheduling allocation message from the resource pool, and the type 1 of the D2D discovery refers to a resource pool for D2D discovery of multiple user equipments. It is configured by the base station.

With reference to the first possible implementation manner of the fifth aspect, in a second possible implementation manner of the fifth aspect, the resource pool of mode 2 of the D2D communication is a resource pool for sending a message of mode 2 of D2D communication The resource pool of type 1 discovered by the D2D is a resource pool for sending messages of type 1 discovered by D2D.

With the fifth aspect or the foregoing any possible implementation manner of the fifth aspect, in a third possible implementation manner of the fifth aspect, the first user equipment sends the resource pool indication information to the second user equipment, The method includes: sending, by the first user equipment, the resource pool indication information to the second user equipment by using at least one of a physical D2D synchronization channel, a D2D discovery channel, and a D2D communication channel.

With the fifth aspect or the foregoing any possible implementation manner of the fifth aspect, in a fourth possible implementation manner of the fifth aspect, the first user equipment sends the resource pool indication information to the second user equipment The method further includes: the first user equipment receiving the request information sent by the second user equipment.

In a sixth aspect, the embodiment of the present invention provides a communication method, where the method includes: the second user equipment receives the resource pool indication information sent by the first user equipment, where the first user equipment is located in a service range of the base station, where the The second user equipment is not located in the service range of any one of the base stations; the second user equipment sends the D2D message to the first user equipment by using the time-frequency resource in the resource pool indicated by the resource pool indication information.

With reference to the sixth aspect, in a first possible implementation manner of the sixth aspect, the resource pool indication information is used to indicate a resource pool of mode 2 of the D2D communication and at least one resource of the type 1 resource pool of the D2D discovery. The pool, wherein the mode 2 of the D2D communication refers to that the user equipment selects data for transmitting direct communication and the scheduling allocation message from the resource pool, and the type 1 of the D2D discovery refers to a resource pool for D2D discovery of multiple user equipments. It is configured by the base station.

In conjunction with the first possible implementation of the sixth aspect, the second possible implementation in the sixth aspect In the present mode, the resource pool of mode 2 of the D2D communication is a resource pool for transmitting a message of mode 2 of D2D communication, and the resource pool of type 1 of the D2D discovery is a type 1 resource for sending a message discovered by D2D. Pool.

With the sixth aspect or the foregoing any possible implementation manner of the sixth aspect, in a third possible implementation manner of the sixth aspect, the second user equipment receives the resource pool indication information sent by the first user equipment, including The second user equipment receives the resource pool indication information sent by the first user equipment by using at least one of a physical D2D synchronization channel, a D2D discovery channel, and a D2D communication channel.

With the sixth aspect or the foregoing any possible implementation manner of the sixth aspect, in a fourth possible implementation manner of the sixth aspect, before the second user equipment receives the resource pool indication information sent by the first user equipment, The method further includes: the second user equipment transmitting the request information to the first user equipment.

According to the foregoing technical solution, in a part of the network coverage scenario, the user equipment located outside the service range of the base station can communicate with the user equipment located in the service range of the base station by using D2D. At the same time, the time-frequency resource used by the user equipment located outside the service area of the base station to transmit the D2D message to the user equipment located in the service area of the base station is the time-frequency resource indicated by the user equipment located in the service range of the base station. The user equipment located in the service area of the base station can use the time-frequency resource to receive the user equipment located outside the service range of the base station. Therefore, the user equipment located in the service area of the base station does not need to monitor a large amount of time-frequency resources without a purpose, reduces the radio resource to be monitored, reduces the workload of the user equipment located in the service range of the base station, and improves the service area of the base station. User equipment efficiency.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only 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.

Figure 1 is a schematic diagram of the coexistence of D2D and conventional wireless communication.

2 is a schematic diagram of a partial network coverage scenario.

FIG. 3 is a structural block diagram of a user equipment according to an embodiment of the present invention.

FIG. 4 is a structural block diagram of another user equipment according to an embodiment of the present invention.

FIG. 5 is a structural block diagram of another user equipment according to an embodiment of the present invention.

FIG. 6 is a structural block diagram of another user equipment according to an embodiment of the present invention.

FIG. 7 is a schematic flowchart of a communication method according to an embodiment of the present invention.

FIG. 8 is a schematic flowchart of a communication method according to an embodiment of the present invention.

FIG. 9 is a schematic flowchart of a communication method 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 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 shall fall within the scope of the present invention.

It should be understood that the technical solutions of the embodiments of the present invention can be applied to various communication systems, for example, Global System of Mobile communication (GSM) system, code division multiple access (English: Code Division Multiple Access, Abbreviation: CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (English: General Packet Radio Service, GPRS for short), Long Term Evolution (English: Long Term) Evolution, referred to as LTE) system, LTE frequency division duplex (English: Frequency Division Duplex, FDD for short), LTE time division duplex (English: Time Division Duplex, TDD for short), universal mobile communication system (English: Universal) Mobile Telecommunication System, referred to as UMTS).

User equipment (English: User Equipment, UE for short) may also be called a mobile terminal (English: Mobile Terminal, MT), a mobile user equipment, etc., and may be accessed via a radio access network (for example, English: Radio Access Network, referred to as: RAN) communicates with one or more core networks, which may be mobile terminals, such as mobile phones (or "cellular" phones) and computers with mobile terminals, for example, portable, pocket, handheld, A built-in or in-vehicle mobile device. The user equipments involved in the embodiments of the present invention are all D2D-enabled user equipments.

The base station may be a base station in GSM or CDMA (English: Base Transceiver Station, BTS for short), or may be a base station in WCDMA (English: NodeB), or may be an eNB or an e-NodeB in LTE. Not limited.

In order to facilitate the understanding of the embodiments of the present invention, the phases introduced in the embodiments of the present invention are first introduced herein. Off factor.

D2D is divided into D2D discovery (English: D2D discovery) and D2D communication (English: D2D communication).

The D2D discovery means that the user equipment sends a discovery message (English: discovery message), and other user equipments obtain the information of the user equipment that sends the discovery message by reading the discovery message. The discovery message may include identity information of a user equipment that sends the discovery message, such as an identity (English: identity).

D2D discovery is divided into two types (English: type): type 1 (English: type1) and type 2 (English: type2). Type 1 refers to a resource pool for D2D discovery of a plurality of user equipments (the resource pool of which type 1 may be referred to as D2D discovery) is configured by the base station. Type 2 means that the transmission resource for D2D discovery of one user equipment is configured by the base station.

D2D communication means that the user equipment sends control information and data, and other user equipments obtain information such as the transmission format of the subsequent data by reading the control information, thereby correctly receiving subsequent data.

D2D communication is divided into two modes (English: mode): mode 1 (English: mode1) and mode 2 (English: mode2). Mode 1 (Mode1): refers to a resource used by a base station or a relay (English: relay) node to schedule user equipment to transmit D2D data and control information. Specifically, the control information is a Scheduling Assignment (SA) message. When mode 1 of D2D communication is adopted, the base station indicates, by downlink signaling, the resource and format of the scheduling allocation and data, and the like. Mode 2 (Mode 2) refers to a resource in which a user equipment itself selects data for transmitting direct communication and an SA message from a resource pool (which may be referred to as a resource pool of mode 2 of D2D communication), wherein the mode of the D2D communication The resource pool of 2 may include an SA message resource pool and a resource pool of data corresponding to the SA message. In other words, the user equipment may select a resource for transmitting the SA message from the SA message resource pool, and select a resource for transmitting data corresponding to the SA message from the resource pool of the data corresponding to the SA message.

A resource pool includes a set of time-frequency resources, which is a set of multiple time-frequency resources.

FIG. 2 is a schematic diagram of a partial network coverage scenario applied by an embodiment of the present invention. As shown in FIG. 2, the user equipment 201 is located within the service range of the base station 200, the user equipment 202 is located outside the service range of the base station 200, and the user equipment 202 is not located within the service range of any one of the base stations. User device 201 can be in communication with user device 202. User device 201 and user device 202 support D2D.

FIG. 3 is a structural block diagram of a user equipment according to an embodiment of the present invention. The user equipment shown in FIG. 3 may be referred to as a first user equipment, and the user equipment 300 includes: a receiving unit 301 and a sending unit. 302.

The receiving unit 301 is configured to receive resource pool indication information sent by the base station, where the user equipment 300 is located in a service range of the base station.

The sending unit 302 is configured to send the resource pool indication information to the second user equipment, where the second user equipment is not located in the service range of any one of the base stations.

The receiving unit 301 is further configured to receive the D2D message sent by the second user equipment, where the D2D message is sent by the second user equipment by using the time-frequency resource in the resource pool indicated by the resource pool indication information.

The user equipment 300 shown in FIG. 3 sends the resource pool indication information to the second user equipment, so that the second user equipment uses the time-frequency resource in the resource pool indicated by the received resource pool indication information to the first user. The device sends a D2D message. The first user equipment may receive the D2D message sent by the second user equipment by using the time-frequency resource in the resource pool indicated by the resource pool indication information. In this way, the time-frequency resource that the first user equipment needs to monitor can be reduced, the workload of the first user equipment is reduced, and the working efficiency of the first user equipment is improved.

Specifically, the receiving unit 301 may be specifically configured to receive the resource pool indication information that is sent by the base station by using at least one of high layer broadcast signaling and physical layer broadcast signaling. The receiving unit 301 is further configured to receive the resource pool indication information that is sent by the base station by using at least one of high layer dedicated signaling and physical layer dedicated signaling. For example, the receiving unit 301 may obtain the resource pool indication information by receiving a radio resource control (English: Radio Resource Control, RRC for short) message sent by the base station.

Optionally, as an embodiment, the resource pool indication information received by the receiving unit 301 is used to indicate at least one resource pool of the mode 2 resource pool of the D2D communication and the type 1 resource pool of the D2D discovery, where the D2D communication The resource pool of mode 2 includes an SA resource pool and a resource pool of data corresponding to the SA. Further, the resource pool of mode 2 of the D2D communication is a resource pool for transmitting a message of mode 2 of D2D communication, and the resource pool of type 1 of the D2D discovery is a resource pool for transmitting a message of type 1 discovered by D2D. The resource pool for transmitting a message of mode 2 of the D2D communication may also be referred to as a transmission resource pool of mode 2 of D2D communication. The resource pool for transmitting messages of type 1 of the D2D discovery may also be referred to as a type 1 transmission resource pool for D2D discovery.

Further, the sending unit 302 is specifically configured to send the resource pool indication information to the second user by using at least one of a physical D2D synchronization channel (English: Physical D2D Synchronization Channel, PD2DSCH), a D2D discovery channel, and a D2D communication channel. device.

Optionally, as an embodiment, the receiving unit 301 is further configured to receive request information sent by the second user equipment. The request information is used to request the user equipment 300 to send the resource pool indication information. The sending unit 302 is specifically configured to: after the receiving unit 301 receives the request information, send the resource pool indication message to the second user equipment.

FIG. 4 is a structural block diagram of another user equipment according to an embodiment of the present invention. The user equipment shown in FIG. 4 may be referred to as a first user equipment, and the user equipment 400 includes a receiver 401 and a transmitter 402.

The receiver 401 is configured to receive resource pool indication information sent by the base station, where the user equipment 400 is located in a service range of the base station.

The transmitter 402 is configured to send the resource pool indication information to the second user equipment, where the second user equipment is not located in the service range of any one of the base stations.

The receiver 401 is further configured to receive the D2D message sent by the second user equipment, where the D2D message is sent by the second user equipment by using the time-frequency resource in the resource pool indicated by the resource pool indication information.

The user equipment 400 shown in FIG. 4 sends the resource pool indication information to the second user equipment, so that the second user equipment uses the time-frequency resource in the resource pool indicated by the received resource pool indication information to the first user. The device sends a D2D message. The first user equipment may receive the D2D message sent by the second user equipment by using the time-frequency resource in the resource pool indicated by the resource pool indication information. In this way, the time-frequency resource that the first user equipment needs to monitor can be reduced, the workload of the first user equipment is reduced, and the working efficiency of the first user equipment is improved.

Specifically, the receiver 401 may be specifically configured to receive the resource pool indication information that is sent by the base station by using at least one of high layer broadcast signaling and physical layer broadcast signaling. The receiver 401 is further configured to receive the resource pool indication information that is sent by the base station by using at least one of a high layer dedicated signaling and a physical layer dedicated signaling. For example, the receiver 401 can obtain the resource pool indication information by receiving a radio resource control (English: Radio Resource Control, RRC for short) message sent by the base station.

Optionally, as an embodiment, the resource pool indication information received by the receiver 401 is used to indicate at least one resource pool of the mode 2 resource pool of the D2D communication and the type 1 resource pool of the D2D discovery, where the D2D communication The resource pool of mode 2 includes an SA resource pool and a resource pool of data corresponding to the SA. Further, the resource pool of mode 2 of the D2D communication is a resource pool for transmitting a message of mode 2 of D2D communication, and the resource pool of type 1 of the D2D discovery is a class of D2D discovery. Type 1 resource pool for sending messages. The resource pool for transmitting a message of mode 2 of the D2D communication may also be referred to as a transmission resource pool of mode 2 of D2D communication. The resource pool for transmitting messages of type 1 of the D2D discovery may also be referred to as a type 1 transmission resource pool for D2D discovery.

Further, the transmitter 402 is specifically configured to send the resource pool indication information to the second user by using at least one of a physical D2D synchronization channel (English: Physical D2D Synchronization Channel, PD2DSCH), a D2D discovery channel, and a D2D communication channel. device.

Optionally, as an embodiment, the receiver 401 is further configured to receive request information sent by the second user equipment. The request information is used to request the user equipment 400 to send the resource pool indication information. The transmitter 402 is configured to send the resource pool indication message to the second user equipment after the receiver 401 receives the request information.

FIG. 5 is a structural block diagram of another user equipment according to an embodiment of the present invention. The user equipment shown in FIG. 5 may be referred to as a second user equipment. As shown in FIG. 5, the user equipment 500 includes a receiving unit 501 and a transmitting unit 502.

The receiving unit 501 is configured to receive resource pool indication information sent by the first user equipment, where the first user equipment is located in a service range of the base station, and the user equipment 500 is not located in a service range of any one of the base stations.

The sending unit 502 is configured to send a D2D message to the first user equipment by using a time-frequency resource in the resource pool indicated by the resource pool indication information.

The user equipment 500 shown in FIG. 5 sends a D2D message to the first user equipment by using the time-frequency resource in the resource pool indicated by the received resource pool indication information. In this case, the first user equipment may receive the message sent by the second user equipment by using the time-frequency resource in the resource pool indicated by the resource pool indication information. In this way, the time-frequency resource that the first user equipment needs to monitor can be reduced, the workload of the first user equipment is reduced, and the working efficiency of the first user equipment is improved.

Optionally, as an embodiment, the resource pool indication information received by the receiving unit 501 is used to indicate a resource pool of mode 2 of D2D communication and a resource pool of at least one of resource pools of type 1 of D2D discovery, where The resource pool of mode 2 of D2D communication includes an SA resource pool and a resource pool of data corresponding to the SA. Further, the resource pool of mode 2 of the D2D communication is a resource pool for transmitting a message of mode 2 of D2D communication, and the resource pool of type 1 of the D2D discovery is a resource pool for sending a message of type 1 discovered by D2D. . That is, the sending unit 502 is specifically configured to use at least one of a resource pool for transmitting a message of mode 2 of the D2D communication and a resource pool for transmitting a message of type 1 of the D2D discovery for transmitting a message. Selected in the resource pool for The resource that sent the D2D message.

Further, the receiving unit 501 is configured to receive the resource pool indication information sent by the first user equipment by using at least one of a PD2DSCH, a D2D discovery channel, and a D2D communication channel.

Optionally, as an embodiment, the sending unit 502 is further configured to send the request information to the first user equipment. The request information is used to request the resource pool indication information sent by the first user equipment.

FIG. 6 is a structural block diagram of another user equipment according to an embodiment of the present invention. The user equipment shown in FIG. 6 may be referred to as a second user equipment. As shown in FIG. 6, the user equipment 600 includes a receiver 601 and a transmitter 602.

The receiver 601 is configured to receive resource pool indication information sent by the first user equipment, where the first user equipment is located in a service range of the base station, and the user equipment 600 is not located in a service range of any one of the base stations.

The sender 602 is configured to send a D2D message to the first user equipment by using a time-frequency resource in the resource pool indicated by the resource pool indication information.

The user equipment 600 shown in FIG. 6 sends a D2D message to the first user equipment by using the time-frequency resource in the resource pool indicated by the received resource pool indication information. In this case, the first user equipment may receive the message sent by the second user equipment by using the time-frequency resource in the resource pool indicated by the resource pool indication information. In this way, the time-frequency resource that the first user equipment needs to monitor can be reduced, the workload of the first user equipment is reduced, and the working efficiency of the first user equipment is improved.

Optionally, as an embodiment, the resource pool indication information received by the receiver 601 is used to indicate a resource pool of mode 2 of D2D communication and a resource pool of at least one of resource pools of type 1 of D2D discovery, where The resource pool of mode 2 of D2D communication includes an SA resource pool and a resource pool of data corresponding to the SA. Further, the resource pool of mode 2 of the D2D communication is a resource pool for transmitting a message of mode 2 of D2D communication, and the resource pool of type 1 of the D2D discovery is a resource pool for sending a message of type 1 discovered by D2D. . That is, the transmitter 602 is specifically configured to use at least one of a resource pool for transmitting a message of mode 2 of the D2D communication and a resource pool for sending a message of type 1 of the D2D discovery for transmitting a message. Select the resource used to send the D2D message in the resource pool.

Further, the receiver 601 is configured to receive the resource pool indication information sent by the first user equipment by using at least one of a PD2DSCH, a D2D discovery channel, and a D2D communication channel.

Optionally, as an embodiment, the transmitter 602 is further configured to send to the first user equipment. Request information. The request information is used to request the resource pool indication information sent by the first user equipment.

The user equipment 300 shown in FIG. 3 and the user equipment 400 shown in FIG. 4 may be the user equipment 201 shown in FIG. 2, or may be the first user equipment in FIG. 7 to FIG. The user equipment 500 shown in FIG. 5 and the user equipment 600 shown in FIG. 6 may be the user equipment 202 shown in FIG. 2, or may be the second user equipment in FIG. 7 to FIG.

701. The first user equipment receives the resource pool indication information sent by the base station, where the first user equipment is located in a service range of the base station.

702. The first user equipment sends the resource pool indication information to the second user equipment, where the second user equipment is not located in a service range of any one of the base stations.

703. The first user equipment receives the D2D message sent by the second user equipment, where the D2D message is sent by the second user equipment by using the time-frequency resource in the resource pool indicated by the resource pool indication information.

According to the method shown in FIG. 7, the first user equipment sends the resource pool indication information to the second user equipment, so that the second user equipment uses the received resource pool indicated by the resource pool indication information. The frequency resource sends a D2D message to the first user equipment. The first user equipment may receive the D2D message sent by the second user equipment by using the time-frequency resource in the resource pool indicated by the resource pool indication information. In this way, the time-frequency resource that the first user equipment needs to monitor can be reduced, the workload of the first user equipment is reduced, and the working efficiency of the first user equipment is improved.

In step 701, the resource pool indication information may be sent by the base station to the first user equipment by using at least one of a high level broadcast signaling and a physical layer broadcast signaling, where the resource pool indication information may also be a base station through a high layer dedicated letter. And transmitting at least one of physical layer-specific signaling to the first user equipment. For example, the first user equipment may obtain the resource pool indication information by receiving a radio resource control (English: Radio Resource Control, RRC for short) message sent by the base station.

Optionally, as an embodiment, the resource pool indication information is used to indicate a resource pool of mode 2 of D2D communication and at least one resource pool of type 1 of D2D discovery, where mode 2 of the D2D communication is The resource pool includes an SA resource pool and a resource pool of data corresponding to the SA. Further, the resource pool of mode 2 of the D2D communication is a resource pool for transmitting a message of mode 2 of D2D communication, and the resource pool of type 1 of the D2D discovery is a resource pool for sending a message of type 1 discovered by D2D. . That is, the second user equipment may use the resource pool for transmitting the message of mode 2 of the D2D communication and the resource pool for sending the message of type 1 of the D2D discovery. Selecting a resource for transmitting a message from at least one of the resource pools for transmitting the message.

Further, in step 702, the first user equipment may send the resource pool indication information to at least one of a physical D2D synchronization channel (English: Physical D2D Synchronization Channel, PD2DSCH), a D2D discovery channel, and a D2D communication channel. The second user device.

Optionally, as an embodiment, before the step 702, the method may further include: the first user equipment receiving the request information sent by the second user equipment. The request information may be used to request the first user equipment to send the resource pool indication information. After receiving the request information, the first user equipment sends the resource pool indication information to the second user equipment.

801. The second user equipment receives the resource pool indication information sent by the first user equipment, where the first user equipment is located in a service range of the base station, and the second user equipment is not located in a service range of any one of the base stations.

802. The second user equipment sends a D2D message to the first user equipment by using a time-frequency resource in the resource pool indicated by the resource pool indication information.

According to the method shown in FIG. 8, the second user equipment sends a D2D message to the first user equipment by using the received time-frequency resource in the resource pool indicated by the resource pool indication information. In this case, the first user equipment may receive the message sent by the second user equipment by using the time-frequency resource in the resource pool indicated by the resource pool indication information. In this way, the time-frequency resource that the first user equipment needs to monitor can be reduced, the workload of the first user equipment is reduced, and the working efficiency of the first user equipment is improved.

Optionally, as an embodiment, the resource pool indication information is used to indicate a resource pool of mode 2 of D2D communication and at least one resource pool of type 1 of D2D discovery, where mode 2 of the D2D communication is The resource pool includes an SA resource pool and a resource pool of data corresponding to the SA. Further, the resource pool of mode 2 of the D2D communication is a resource pool for transmitting a message of mode 2 of D2D communication, and the resource pool of type 1 of the D2D discovery is a resource pool for sending a message of type 1 discovered by D2D. . That is, the second user equipment may use at least one of a resource pool for transmitting a message of mode 2 of the D2D communication and a resource pool for transmitting a message of type 1 of the D2D discovery for transmitting a message. Select the resource used to send the message in the resource pool.

Further, in step 801, the second user equipment may receive the resource sent by the first user equipment by using at least one of a PD2DSCH, a D2D discovery channel, and a D2D communication channel. Pool indication information.

Optionally, as an embodiment, before the step 801, the method may further include: the second user equipment sends the request information to the first user equipment. The request information may be used to request the first user equipment to send the resource pool indication information.

901. The first user equipment receives the resource pool indication information sent by the base station. The first user equipment is located within the service range of the base station.

Further, the resource pool indication information is used to indicate at least one resource pool of the mode 2 resource pool of the D2D communication and the type 1 resource pool of the D2D communication, where the resource pool of the mode 2 of the D2D communication includes the SA resource pool and The resource pool of the data corresponding to the SA. Further, the resource pool of mode 2 of the D2D communication is a resource pool for transmitting a message of mode 2 of D2D communication, and the resource pool of type 1 of the D2D discovery is a resource pool for sending a message of type 1 discovered by D2D. . The resource pool used to send the message is used to indicate the resource pool in which the message is sent. That is, the second user equipment may use at least one of a resource pool for transmitting a message of mode 2 of the D2D communication and a resource pool for transmitting a message of type 1 of the D2D discovery for transmitting a message. Select the resource used to send the message in the resource pool.

Optionally, step 902 may also be included.

902. The second user equipment sends the request information to the first user equipment.

The second user equipment is not within the service range of any one of the base stations. The second user equipment may send the request information to the first user equipment if the D2D needs to be performed with the first user equipment.

903. The first user equipment sends the resource pool indication information to the second user equipment.

In the case that step 902 is performed, the first user equipment sends the resource pool indication information to the second user equipment when receiving the resource pool indication information sent by the second user equipment. Specifically, the first user equipment may start to broadcast the resource pool indication information when receiving the resource pool indication information sent by the second user equipment, or directly send the resource pool indication information to the first Two user devices.

If the step 902 is not performed, the first user equipment may broadcast the resource pool indication information by broadcasting to send the resource pool indication information to the second user equipment. The second user equipment receives the resource pool indication information sent by the first user equipment by monitoring.

Specifically, as an embodiment, the first user equipment may use a physical D2D synchronization signal. The resource pool indication information is sent to the second user equipment by at least one of a physical D2D Synchronization Channel (PD2DSCH), a D2D discovery channel, and a D2D communication channel. For example, when the first user equipment sends the resource pool indication information through the D2D discovery channel, the first user equipment may send the resource pool indication information to the second user equipment by using a discovery message. When the first user equipment sends the resource pool indication information through the D2D communication channel, the first user equipment may send the resource pool indication information to the second user equipment by using an SA message or data.

It can be understood that, in a case that the first user equipment sends the resource pool indication information to the second user equipment by using at least one of the D2D discovery channel and the D2D communication channel and the PD2DSCH, the first user equipment The partial information in the resource pool indication information is sent by using the PD2DSCH, and another part of the resource pool indication information is sent by using at least one of the D2D discovery channel and the D2D communication channel.

904. The second user equipment sends the D2D message to the first user equipment by using the time-frequency resource in the resource pool indicated by the resource pool indication information. The first user equipment receives the D2D message sent by the second user equipment, where the D2D message is sent by the second user equipment using the time-frequency resource in the resource pool indicated by the resource pool indication information.

Those skilled in the art can understand that the D2D message refers to a message sent or received when D2D is adopted, and may be a data and an SA message, or may be a discovery message. Specifically, in the case that the resource pool indication information is used to indicate the resource pool of the mode 2 of the D2D communication, the second user equipment causes the resource pool in the resource pool of the D2D communication mode 2 to send a message in the D2D communication. That is, data and SA messages. In the case that the resource pool indication information is used to indicate the resource pool of type 1 of the D2D discovery, the second user equipment sends a D2D discovery message using the resource in the resource pool of type 1 discovered by the D2D. In the case that the resource pool indication information is used to indicate the resource pool of mode 2 of the D2D communication and the resource pool of type 1 of the D2D discovery, the second user equipment enables the resource pool in the resource pool of the D2D communication mode 2 Transmitting the messages in the D2D communication, that is, the data and the SA message; the second user equipment sends the D2D discovery message using the resources in the resource pool of the Type 1 discovered by the D2D.

According to the method shown in FIG. 9, in a part of the network coverage scenario, the user equipment located outside the service range of the base station may perform D2D with the user equipment located in the service range of the base station. At the same time, when the user equipment located outside the service area of the base station sends a D2D message to the user equipment located in the service area of the base station, the time-frequency resource used is located in the resource pool indicated by the user equipment located in the service area of the base station. Time-frequency resources. The user equipment located in the service area of the base station can use the time-frequency resources in the resource pool to receive the D2D message sent by the user equipment located outside the service range of the base station. Therefore, the user equipment located in the service area of the base station does not need to listen to a large number of time-frequency resources without purpose, reduce the time-frequency resources that need to be monitored, reduce the workload of the user equipment located in the service range of the base station, and improve the service scope of the base station. The working efficiency of the user equipment within.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

The functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product stored in a storage medium. The instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps 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. .

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. All modifications are intended to be included within the scope of the invention, and the scope of the invention should be

Claims

A user equipment, where the user equipment includes:

a receiving unit, configured to receive resource pool indication information sent by the base station, where the user equipment is located in a service range of the base station;

a sending unit, configured to send, by the receiving unit, the resource pool indication information to a second user equipment, where the second user equipment is not located in a service range of any one of the base stations;

The receiving unit is further configured to receive a device-to-device D2D message sent by the second user equipment, where the D2D message is a time frequency in a resource pool indicated by the second user equipment by using the resource pool indication information. The resource was sent.
The user equipment according to claim 1, wherein the resource pool indication information received by the receiving unit is used to indicate at least one of a resource pool of mode 2 of D2D communication and a resource pool of type 1 of D2D discovery. a resource pool, wherein the mode 2 of the D2D communication refers to that the user equipment selects data for transmitting direct communication from the resource pool, and the type 1 of the D2D discovery refers to multiple user equipments for D2D. The discovered resource pool is configured by the base station.
The user equipment according to claim 2, wherein the resource pool of mode 2 of the D2D communication indicated by the resource pool indication information received by the receiving unit is a mode 2 for transmitting a message for D2D communication. The resource pool of type 1 of the D2D discovery indicated by the resource pool indication information received by the receiving unit is a resource pool of type 1 for D2D discovery for sending a message.
The user equipment according to any one of claims 1 to 3, wherein the sending unit is specifically configured to use the resource by at least one of a physical D2D synchronization channel, a D2D discovery channel, and a D2D communication channel. The pool indication information is sent to the second user equipment.
The user equipment according to any one of claims 1 to 4, wherein the receiving unit is further configured to receive request information sent by the second user equipment.
A user equipment, where the user equipment includes:

a receiving unit, configured to receive resource pool indication information sent by the first user equipment, where the first user equipment is located in a service range of the base station, and the user equipment is not located in a service scope of any one of the base stations;

And a sending unit, configured to send a device-to-device D2D message to the first user equipment by using a time-frequency resource in the resource pool indicated by the resource pool indication information received by the receiving unit.
User equipment according to claim 6, wherein said receiving unit receives The resource pool indication information is used to indicate at least one resource pool of the mode 2 resource of the D2D communication and the resource pool of the type 1 of the D2D discovery, where the mode 2 of the D2D communication refers to the user equipment from the resource pool. The data for transmitting direct communication and the scheduling assignment message are selected. The type 1 of the D2D discovery refers to that the resource pool for D2D discovery of multiple user equipments is configured by the base station.
The user equipment according to claim 7, wherein the resource pool of mode 2 of the D2D communication indicated by the resource pool indication information received by the receiving unit is a mode 2 for transmitting a message for D2D communication. The resource pool of type 1 of the D2D discovery indicated by the resource pool indication information received by the receiving unit is a resource pool of type 1 for D2D discovery for sending a message.
The user equipment according to any one of claims 6 to 8, wherein the receiving unit is specifically configured to receive the first part by using at least one of a physical D2D synchronization channel, a D2D discovery channel, and a D2D communication channel. The resource pool indication information sent by a user equipment.
The user equipment according to any one of claims 6 to 9, wherein the sending unit is further configured to send request information to the first user equipment.
A user equipment, where the user equipment includes:

a receiver, configured to receive resource pool indication information sent by the base station, where the user equipment is located in a service range of the base station;

a transmitter, configured to send the resource pool indication information received by the receiver to a second user equipment, where the second user equipment is not located in a service scope of any one of the base stations;

The receiver is further configured to receive a device-to-device D2D message sent by the second user equipment, where the D2D message is a time-frequency in a resource pool indicated by the second user equipment by using the resource pool indication information. The resource was sent.
The user equipment according to claim 11, wherein the resource pool indication information received by the receiver is used to indicate at least one of a resource pool of mode 2 of D2D communication and a resource pool of type 1 of D2D discovery. a resource pool, wherein the mode 2 of the D2D communication refers to that the user equipment selects data for transmitting direct communication from the resource pool, and the type 1 of the D2D discovery refers to multiple user equipments for D2D. The discovered resource pool is configured by the base station.
The user equipment according to claim 12, wherein the resource pool of mode 2 of the D2D communication indicated by the resource pool indication information received by the receiver is a mode 2 of D2D communication for transmitting a message. a resource pool of the type 1 of the D2D discovery indicated by the resource pool indication information received by the receiver is a type 1 of the D2D discovery for sending The resource pool for sending messages.
The user equipment according to any one of claims 11 to 13, wherein the transmitter is specifically configured to use the resource by at least one of a physical D2D synchronization channel, a D2D discovery channel, and a D2D communication channel. The pool indication information is sent to the second user equipment.
The user equipment according to any one of claims 11 to 14, wherein the receiver is further configured to receive request information sent by the second user equipment.
A user equipment, where the user equipment includes:

a receiver, configured to receive resource pool indication information sent by the first user equipment, where the first user equipment is located within a service range of the base station, and the user equipment is not located in a service scope of any one of the base stations;

And a transmitter, configured to send a device-to-device D2D message to the first user equipment by using a time-frequency resource in the resource pool indicated by the resource pool indication information received by the receiver.
The user equipment according to claim 16, wherein the resource pool indication information received by the receiver is used to indicate at least one of a resource pool of mode 2 of D2D communication and a resource pool of type 1 of D2D discovery. a resource pool, wherein the mode 2 of the D2D communication refers to that the user equipment selects data for transmitting direct communication from the resource pool, and the type 1 of the D2D discovery refers to multiple user equipments for D2D. The discovered resource pool is configured by the base station.
The user equipment according to claim 17, wherein the resource pool of mode 2 of the D2D communication indicated by the resource pool indication information received by the receiver is a mode 2 for transmitting a message for D2D communication. The resource pool of type 1 of the D2D discovery indicated by the resource pool indication information received by the receiver is a resource pool of type 1 for D2D discovery for sending a message.
The user equipment according to any one of claims 16 to 18, wherein the receiver is specifically configured to receive the first part by using at least one of a physical D2D synchronization channel, a D2D discovery channel, and a D2D communication channel. The resource pool indication information sent by a user equipment.
The user equipment according to any one of claims 16 to 19, wherein the transmitter is further configured to send request information to the first user equipment.
A communication method, characterized in that the method comprises:

Receiving, by the first user equipment, resource pool indication information sent by the base station, where the first user equipment is located in a service range of the base station;

Sending, by the first user equipment, the resource pool indication information to the second user equipment, where The second user equipment is not located in the service range of any one of the base stations;

The first user equipment receives the device-to-device D2D message sent by the second user equipment, where the D2D message is sent by the second user equipment using the time-frequency resource in the resource pool indicated by the resource pool indication information. of.
The method according to claim 21, wherein the resource pool indication information is used to indicate at least one resource pool of a mode 2 resource pool of D2D communication and a type 1 resource pool of D2D discovery, wherein The mode 2 of the D2D communication refers to that the user equipment selects data for transmitting direct communication and the scheduling allocation message from the resource pool. The type 1 of the D2D discovery refers to that the resource pool for D2D discovery of multiple user equipments is determined by the base station. Configured.
The method according to claim 22, wherein the resource pool of mode 2 of the D2D communication is a resource pool for transmitting a message of mode 2 of D2D communication, and the resource pool of type 1 of the D2D discovery is D2D. Discovered type 1 resource pool for sending messages.
The method according to any one of claims 21 to 23, wherein the first user equipment sends the resource pool indication information to the second user equipment, including:

The first user equipment sends the resource pool indication information to the second user equipment by using at least one of a physical D2D synchronization channel, a D2D discovery channel, and a D2D communication channel.
The method according to any one of claims 21 to 24, wherein before the first user equipment sends the resource pool indication information to the second user equipment, the method further includes:

The first user equipment receives request information sent by the second user equipment.
A communication method, characterized in that the method comprises:

The second user equipment receives the resource pool indication information sent by the first user equipment, where the first user equipment is located in a service range of the base station, and the second user equipment is not located in a service scope of any one of the base stations;

The second user equipment sends a device-to-device D2D message to the first user equipment by using a time-frequency resource in the resource pool indicated by the resource pool indication information.
The method according to claim 26, wherein the resource pool indication information is used to indicate a resource pool of mode 2 of D2D communication and at least one resource pool of type 1 of D2D discovery, wherein The mode 2 of the D2D communication refers to that the user equipment selects data for transmitting direct communication and the scheduling allocation message from the resource pool. The type 1 of the D2D discovery refers to that the resource pool for D2D discovery of multiple user equipments is determined by the base station. Configured.
The method according to claim 27, wherein the resource pool of mode 2 of the D2D communication is a resource pool for transmitting a message of mode 2 of D2D communication, and the resource pool of type 1 of the D2D discovery is D2D. Discovered type 1 resource pool for sending messages.
The method according to any one of claims 26 to 28, wherein the second user equipment receives the resource pool indication information sent by the first user equipment, including:

The second user equipment receives the resource pool indication information sent by the first user equipment by using at least one of a physical D2D synchronization channel, a D2D discovery channel, and a D2D communication channel.
The method according to any one of claims 26 to 29, wherein before the second user equipment receives the resource pool indication information sent by the first user equipment, the method further includes:

The second user equipment sends request information to the first user equipment.