WO2016119219A1

WO2016119219A1 - Communication method, base station, and user equipment

Info

Publication number: WO2016119219A1
Application number: PCT/CN2015/071953
Authority: WO
Inventors: 常俊仁; 郭轶; 冯淑兰
Original assignee: 华为技术有限公司
Priority date: 2015-01-30
Filing date: 2015-01-30
Publication date: 2016-08-04
Also published as: CN106031268A; CN106031268B

Abstract

Disclosed are a communication method, user equipment, and base station. The method comprises: at least one among first indication information transmitted by a first base station and second indication information transmitted by a second base station is received by a user equipment, where the first indication information is used for indicating a first time-frequency resource contended by the first base station on a first unlicensed carrier, the second indication information is used for indicating a second time-frequency contended by the second base station on a second unlicensed carrier, the first base station is configured with at least one licensed carrier and at least one unlicensed carrier comprising the first unlicensed carrier, and the second base station is configured with at least one unlicensed carrier comprising the second unlicensed carrier; and, the presence or absence of a resource conflict between the first base station and the second base station is determined on the basis of the at least one among the first indication information and the second indication information that is received. The disclosed communication method allows prevention of interference caused by the first base station and the second base station being hidden nodes to each other.

Description

Communication method, base station and user equipment

Technical field

The present invention relates to the field of communications and, more particularly, to a communication method, a base station, and a user equipment.

Background technique

Spectrum management is a spectrum planning method established for the efficient use of radio frequencies. In the current spectrum management, a part of the spectrum is licensed to a mobile operator or a mobile technology (such as Universal Mobile Telecommunication System (UMTS) or Long Term Evolution (LTE)). The part of the spectrum is called a licensed spectrum. The carrier on the licensed spectrum is generally called a licensed carrier. The cell corresponding to the authorized carrier is called a licensed cell (L-Cell). In addition, some spectrums are also allocated to unauthorized users. Different wireless devices can share the frequency resources. This spectrum is called unlicensed spectrum and can include 2.4-2.4835GHz and 5.725-5.850GHz. The carrier on the unlicensed spectrum is generally called an unlicensed carrier, and the uncorrelated cell is called an unlicensed cell (U-Cell).

Currently, wireless Fidelity (WiFi) devices mostly work on unlicensed spectrum, and the spectrum utilization rate of unlicensed spectrum is relatively low. At the same time, users have more and more demand for mobile broadband, so mobile operators have spectrum resources. The need is getting bigger and bigger. For example, operators hope to deploy a Third Generation Partnership Project (3GPP) network (such as LTE) on unlicensed spectrum, so that the licensed spectrum can be assisted by the licensed spectrum of the existing LTE network. Cooperate with unlicensed spectrum to provide services to users. Generally, an LTE system using an unlicensed spectrum is referred to as LTE-U or U-LTE, or also referred to as License Assisted Access (LAA).

Figures 1 and 2 show examples of scenarios for cooperative transmission of licensed spectrum and unlicensed spectrum, respectively. In the scenario shown in FIG. 1, the system includes a macro cell, a small cell 1 and a small cell 2 deployed in a non-co-located manner, wherein the small cell 1 And the small cell 2 constitutes a small cell cluster, and the macro cell and each small cell in the small cell cluster are connected by an ideal backhaul link. An authorized carrier f1 is configured on the macro cell, and an unlicensed carrier f3 is configured on the small cell cluster. Thus, with the assistance of the authorized carrier f1 on the macro cell, the small cell Each small cell in the cluster can use the unlicensed carrier f3 for data transmission. In the scenario shown in FIG. 2, the system includes a small cell 1 and a small cell 3 deployed in a co-located manner, and a small cell 2 and a small cell deployed in a co-located manner. 4. The small cell 1 and the small cell 3, and the small cell 2 and the small cell 4 are connected by an ideal backhaul link. Specifically, the small cell 1 and the small cell 2 form a small cell cluster 1 and are configured with an authorized carrier 2; the small cell 3 and the small cell 4 constitute a small cell cluster 2, and are configured with an unlicensed carrier 3. Thus, with the assistance of the authorized carrier f2 of the small cell cluster 1, each small cell in the small cell cluster 2 can use the unlicensed carrier f3 for data transmission.

In the above LAA scenario, the LTE system on the U-Cell still needs to compete with other systems (such as Wifi) for unlicensed spectrum resources, so the resources available on the U-Cell are not persistent. At present, the carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) mechanism is generally used to control the access of the shared unlicensed carrier. In the CSMA/CA mechanism, each node must perform carrier sensing before performing transmission. If the channel is detected to be busy, the node delays its data transmission; if it detects that the channel is idle, the node can perform data transmission. However, if two nodes simultaneously check that the channel is idle and the two nodes are hidden nodes from each other, a transmission collision occurs, which degrades system performance.

As shown in FIG. 3, the user equipment (User Equipment, UE) 1 and the UE 2 are both located in the common coverage of the base station A and the base station B. The base station A and the base station B cannot detect each other's wireless signals, that is, the base station A. And base station B are mutual reference nodes. In this way, when the base station A and the base station B simultaneously detect that the unlicensed carrier is idle, the base station A can perform data transmission with the UE1, and the base station B also detects that the unlicensed carrier is idle, so it is also possible to perform the interaction with the UE 2. data transmission. Therefore, the data transmission between the base station A and the UE1 will collide with the data transmission between the base station B and the UE 2. As shown in FIG. 4, the access point (AP) and the base station A are located outside the listening range of the other party, that is, the base station A and the WiFi AP are hidden nodes. In this way, when the base station A schedules the UE1 to use the unlicensed carrier, if the AP also detects that the unlicensed carrier is idle, the data transmission between the base station A and the UE 1 may be interfered by the data transmission between the UE2 and the AP.

In summary, in the scenario where the cellular network uses the licensed spectrum and the unlicensed spectrum for cooperative transmission, how to solve the interference caused by the hidden nodes is an urgent problem to be solved in the field.

Summary of the invention

The embodiments of the present invention provide a communication method, a user equipment, and a base station, which are beneficial to avoid interference caused by hidden nodes.

The first aspect provides a communication method, including: receiving, by a user equipment, at least one of first indication information sent by a first base station and second indication information sent by a second base station, where the first indication information is used to indicate the a first time-frequency resource that the first base station contends on the first unlicensed carrier, where the second indication information is used to indicate a second time-frequency resource that the second base station contends on the second unlicensed carrier, where The first base station is configured with at least one authorized carrier and at least one unlicensed carrier including the first unlicensed carrier, the second base station configured with at least one unlicensed carrier including the second unlicensed carrier; Determining, by at least one of the indication information and the second indication information, whether there is a resource conflict between the first base station and the second base station.

In a first possible implementation manner, determining, according to at least one of the received first indication information and the second indication information, whether there is a resource conflict between the first base station and the second base station, including: Receiving the first indication information and the second indication information, determining, according to the first indication information and the second indication information, whether the first time-frequency resource and the second time-frequency resource overlap; if the first time-frequency The resource overlaps with the second time-frequency resource, and determines that there is a resource conflict between the first base station and the second base station.

In combination with the foregoing possible implementation manner, in a second possible implementation, the method further includes: if it is determined that the first base station and the second base station have a resource conflict, sending resource conflict indication information to the first base station, the resource The conflict indication information is used to indicate that there is a resource conflict.

In combination with the foregoing possible implementation manner, in a third possible implementation, the sending the resource conflict indication information to the first base station includes: sending a resource conflict message to the first base station, where the resource conflict message carries at least one bit The resource conflict indication information of the bit; or sending a resource collision energy signal to the first base station.

In combination with the foregoing possible implementation manner, in a fourth possible implementation manner, the resource conflict indication information is further used to indicate time-frequency resources that are overlapped between the first base station and the second base station.

In conjunction with the foregoing possible implementation manner, in a fifth possible implementation, before the sending the resource conflict indication information to the first base station, the method further includes: generating a random number; sending the resource conflict indication to the first base station The information includes: sending the resource conflict indication information to the first base station if the random number satisfies a feedback trigger condition of the resource conflict indication information.

In combination with the foregoing possible implementation manner, in a sixth possible implementation, the feedback triggering condition of the resource conflict indication information includes at least one of the following: the random number is in the first numerical range The difference between the random number and the feedback reference value is in a second value range, wherein the feedback reference value is configured by the first base station.

In conjunction with the foregoing possible implementation manner, in a seventh possible implementation manner, before the sending the resource conflict indication information to the first base station, the method further includes: performing radio resource management RRM on the reference signal sent by the first base station The measurement is performed to obtain the RRM measurement result. The sending the resource conflict indication information to the first base station includes: sending the resource conflict indication information to the first base station if the RRM measurement result is lower than the first threshold.

In combination with the foregoing possible implementation manner, in an eighth possible implementation manner, before the sending the resource conflict indication information to the first base station, the method further includes: receiving, by the first base station, third indication information, where The third indication information is used to indicate the target user equipment for the feedback resource conflict in the first user equipment group, where the first user equipment group includes the user equipment; the sending the resource conflict indication information to the first base station, including: The target user equipment indicated by the third indication information is the user equipment, and the resource conflict indication information is sent to the first base station.

In combination with the foregoing possible implementation manner, in a ninth possible implementation manner, the receiving the first indication information sent by the first base station and the second indication information sent by the second base station, including: receiving the first The first enhanced request sent by the base station sends at least one of an RTS message and a second enhanced RTS message sent by the second base station, where the first enhanced RTS message carries the first indication information, and the second enhanced RTS message carries the first The second indication information, the sending the resource conflict message to the first base station, includes: sending an enhanced clear sending CTS message to the first base station, where the enhanced CTS message carries the resource conflict indication information.

In combination with the foregoing possible implementation manner, in a tenth possible implementation manner, the first enhanced RTS message carries at least one of the following information: the identifier information of the first base station, and the first cell controlled by the first base station And the identification information of the first user equipment group to which the user equipment belongs in the first base station, where the first cell is a serving cell of the user equipment.

In combination with the foregoing possible implementation manner, in an eleventh possible implementation manner, the receiving the at least one of the first indication information sent by the first base station and the second indication information sent by the second base station, The first RTS message sent by the base station on the third unlicensed carrier and the second RTS message sent by the second base station on the fourth unlicensed carrier; the sending the enhanced CTS message to the first base station, including: And competing for the time-frequency resource on the first unlicensed carrier; if the third time-frequency resource is contending on the first unlicensed carrier, sending the enhanced CTS message to the first base station on the third time-frequency resource.

In conjunction with the foregoing possible implementation manner, in a twelfth possible implementation manner, before the sending the resource conflict indication information to the first base station, the method further includes: receiving fourth indication information sent by the first base station, where The fourth indication information is used to indicate the feedback resource allocated by the first base station to the user equipment on the first authorized carrier, where the at least one authorized carrier configured by the first base station includes the first authorized carrier; the sending to the first base station The resource conflict indication information includes: sending the resource conflict indication information to the first base station by using the feedback resource.

In combination with the foregoing possible implementation manner, in a thirteenth possible implementation manner, the fourth indication information is specifically used to indicate an uplink transmission opportunity of the user equipment in each subframe of the first authorized carrier.

In combination with the foregoing possible implementation manner, in a fourteenth possible implementation, the feedback resource is shared by multiple user equipments, and the feedback resource includes multiple resource blocks, and the feedback resource is used to send to the first base station. The resource conflict indication information includes: randomly selecting a target resource block from the plurality of resource blocks; and using the target resource block, sending the resource conflict indication information to the first base station.

In combination with the foregoing possible implementation manner, in a fifteenth possible implementation, the second base station is further configured with at least one authorized carrier; the receiving the first indication information sent by the first base station and the second indication sent by the second base station At least one of the information includes: receiving at least one of first indication information sent by the first base station on the second authorized carrier, and second indication information sent by the second base station on the third authorized carrier, The at least one authorized carrier configured by the first base station includes the second authorized carrier, and the at least one authorized carrier configured by the second base station includes the third authorized carrier.

In combination with the foregoing possible implementation manner, in a sixteenth possible implementation manner, the receiving, by the first base station, the first indication information sent by the second base station, and the second base station sending the third authorized carrier At least one of the second indication information includes: receiving at least one of the first indication information and the second indication information by detecting a downlink control channel of the second authorized carrier and detecting a downlink control channel of the third authorized carrier Kind.

In conjunction with the foregoing possible implementation manner, in the seventeenth possible implementation manner, the downlink control channel includes at least one of the following: a physical downlink control channel and a physical broadcast channel.

With reference to the foregoing possible implementation manner, in the eighteenth possible implementation, the method is characterized in that, before receiving the at least one of the first indication information sent by the first base station and the second indication information sent by the second base station, The method further includes: receiving the fifth indication information sent by the first base station, where the fifth indication information includes at least one of the following information: identifier information of the second base station, identifier information of the fifth carrier, and the fifth Carrier type information of the carrier, wherein the second base station is in the fifth The second indication information is sent on the carrier, and the carrier type of the fifth carrier is an authorized carrier or an unlicensed carrier.

In combination with the foregoing possible implementation manner, in a nineteenth possible implementation, if the carrier type of the fifth carrier is an authorized carrier, the fifth indication information further includes at least one of the following information: the fifth carrier The resource configuration information of the downlink control channel, the information about the time-frequency resource configured to send the second indication information configured on the fifth carrier, the radio network temporary identifier C-RNTI of the user equipment in the second base station, and the Identification information of the second user equipment group to which the user equipment belongs in the second base station.

In combination with the foregoing possible implementation manner, in the twentieth possible implementation manner, before the receiving the at least one of the first indication information sent by the first base station and the second indication information sent by the second base station, the method further The method includes: receiving, by the first base station, sixth indication information, where the sixth indication information includes at least one of the following information: identifier information of the first base station, identifier information of the sixth carrier, and a carrier type of the sixth carrier And the first base station sends the second indication information on the sixth carrier, where the carrier type of the sixth carrier is an authorized carrier or an unlicensed carrier.

In conjunction with the foregoing possible implementation manner, in the twenty-first possible implementation manner, before the receiving the at least one of the first indication information and the second indication information, the method further includes: to the first base station Sending the RRM measurement result, so that the first base station determines the user equipment as the target user equipment for detecting the resource conflict according to the RRM measurement result.

In a second aspect, another communication method is provided, including: a first base station contending for a time-frequency resource on a first unlicensed carrier, wherein the first base station is configured with at least one authorized carrier and including the first unlicensed carrier At least one unlicensed carrier; if the first time-frequency resource is contending on the first unlicensed carrier, the first indication information is sent to the first user equipment, where the first indication information is used to indicate that the first base station competes for the a first time-frequency resource; receiving the resource conflict indication information sent by the first user equipment according to the first indication information, where the resource conflict indication information is used to indicate that a resource conflict exists; and according to the resource conflict indication information, the first time-frequency Resources are scheduled.

In a first possible implementation manner, the receiving the resource conflict indication information that is sent by the first user equipment according to the first indication information includes: receiving a resource conflict message sent by the first user equipment according to the first indication information, The resource conflicting message carries the resource conflict indication information that occupies at least one bit; or receives the resource conflict energy signal sent by the first user equipment according to the first indication information.

In combination with the above possible implementation manners, in a second possible implementation manner, the resource conflict refers to The indication information is further used to indicate a time-frequency resource in which the resource conflict exists in the first time-frequency resource.

In combination with the foregoing possible implementation manner, in a third possible implementation, the resource conflict indication information is specifically used to indicate that the first time-frequency resource and the second base station compete for the second time-frequency on the second unlicensed carrier. The resources overlap, wherein the second base station is configured with at least one unlicensed carrier including the second unlicensed carrier.

In combination with the foregoing possible implementation manner, in a fourth possible implementation manner, before the receiving, by the first user equipment, the resource conflict indication information sent by the first indication information, the method further includes: grouping from the first user equipment Determining, by the at least one user equipment, the target user equipment for feeding back the resource conflict indication information, where the first user equipment belongs to the first user equipment group, and sending the third indication information to the at least one user equipment, where the The third indication information is used to indicate the target user equipment; the receiving the resource conflict indication information that is sent by the first user equipment according to the first indication information, including: receiving, by the first user equipment, determining that the target user equipment is the first user The resource conflict indication information sent by the device according to the first indication information.

In combination with the foregoing possible implementation manner, in a fifth possible implementation, the sending, by the first user equipment, the first indication information includes: sending an enhanced request to the first user equipment to send an RTS message, where the enhanced RTS message carries the An indication information, the receiving the resource conflict indication information sent by the first user equipment according to the first indication information, comprising: receiving an enhanced clear sending CTS message sent by the first user equipment according to the first indication information, the enhanced CTS message Carry the resource conflict indication information.

In conjunction with the foregoing possible implementation manner, in a sixth possible implementation, the enhanced RTS message carries at least one of the following information: the identifier information of the first base station, and the identifier of the first cell controlled by the first base station. The information and the identification information of the first user equipment group to which the first user equipment belongs in the first base station, where the first cell is a serving cell of the first user equipment.

In combination with the foregoing possible implementation manner, in a seventh possible implementation manner, the sending, by the first user equipment, the enhanced RTS message includes: sending the enhanced RTS message to the first user equipment on a third unlicensed carrier; Receiving the enhanced CTS message sent by the first user equipment according to the first indication information, including: receiving the enhanced CTS message sent by the first user equipment on the third time-frequency resource according to the enhanced RTS message, where the third The time-frequency resource is that the first user equipment competes on the third unlicensed carrier.

In combination with the foregoing possible implementation manner, in an eighth possible implementation manner, before the receiving the resource conflict indication information sent by the first user equipment according to the first indication information, the method further includes The fourth indication information is sent to the first user equipment, where the fourth indication information is used to indicate the feedback resource allocated by the first base station to the first user equipment on the first authorized carrier, where the first base station is configured. An authorized carrier includes the first authorized carrier, and the receiving the resource conflict indication information that is sent by the first user equipment according to the first indication information, including: receiving the resource conflict indication information sent by the first user equipment on the feedback resource .

In conjunction with the foregoing possible implementation manner, in a ninth possible implementation, the fourth indication information is specifically used to indicate an uplink transmission opportunity of the first user equipment in each subframe of the first authorized carrier.

In combination with the foregoing possible implementation manner, in a tenth possible implementation manner, the feedback resource is shared by multiple user equipments that include the first user equipment, and the feedback resource includes multiple resource blocks; Receiving the resource conflict indication information that is sent by the first user equipment according to the first indication information, including: receiving the resource conflict indication information sent by the first user equipment on the target resource block, where the target resource block is the first user The device is randomly selected from the plurality of resource blocks.

In combination with the foregoing possible implementation manner, in the eleventh possible implementation manner, the sending, by the first user equipment, the first indication information, the sending, by the first user equipment, the first indication information The at least one authorized carrier configured by the first base station includes the second authorized carrier.

In conjunction with the foregoing possible implementation manner, in a twelfth possible implementation manner, before the sending the first indication information to the first user equipment, the method further includes: sending, to the first user equipment, fifth indication information, where The fifth indication information includes at least one of the following information: identification information of the second base station, identification information of the fifth carrier, and information of a carrier type of the fifth carrier, where the second base station transmits on the fifth carrier The second indication information is used to indicate a second time-frequency resource that the second base station contends on the second unlicensed carrier, and the carrier type of the fifth carrier is an authorized carrier or an unlicensed carrier.

With reference to the foregoing possible implementation manner, in a thirteenth possible implementation manner, if the carrier type of the fifth carrier is an authorized carrier, the fifth indication information further includes at least one of the following information: the fifth carrier The resource configuration information of the downlink control channel, the information about the time-frequency resource configured to send the second indication information, and the radio network temporary identifier C-RNTI of the first user equipment in the second base station And identifier information of the second user equipment group to which the first user equipment belongs in the second base station.

In conjunction with the foregoing possible implementation manner, in the fourteenth possible implementation manner, before the sending the fifth indication information to the first user equipment, the method further includes: using a backhaul link with the second base station And receiving the configuration information sent by the second base station, where the configuration information includes information about the fifth carrier, and generating the fifth indication information according to the configuration information.

In conjunction with the foregoing possible implementation manner, in the fifteenth possible implementation manner, before the sending the first indication information to the first user equipment, the method further includes: sending, to the first base station, sixth indication information, where The six indication information includes at least one of the following information: identification information of the first base station, identification information of the sixth carrier, and information of a carrier type of the sixth carrier, where the first base station transmits on the sixth carrier The second indication information, the carrier type of the sixth carrier is an authorized carrier or an unlicensed carrier.

In conjunction with the foregoing possible implementation manner, in the sixteenth possible implementation manner, before the sending the first indication information to the first user equipment, the method further includes: receiving the radio resource management RRM sent by the first user equipment And measuring, according to the RRM measurement result, the first user equipment is determined as a target user equipment for detecting a resource conflict.

In combination with the foregoing possible implementation manner, in the seventeenth possible implementation, the first indication information is further used to indicate a feedback reference value, so that the first user equipment generates the reference user value according to the feedback reference value and the first user equipment. The difference of the random values determines whether the resource conflict indication information is sent to the first base station.

A third aspect provides a user equipment, including: a receiving unit, configured to receive at least one of first indication information sent by a first base station and second indication information sent by a second base station, where the first indication information is used by And indicating the first time-frequency resource that the first base station contends on the first unlicensed carrier, where the second indication information is used to indicate the second time-frequency resource that the second base station contends on the second unlicensed carrier, The first base station is configured with at least one authorized carrier and at least one unlicensed carrier including the first unlicensed carrier, the second base station is configured with at least one unlicensed carrier including the second unlicensed carrier, and a determining unit, And determining, according to at least one of the received first indication information and the second indication information, whether the first base station and the second base station have a resource conflict.

In a first possible implementation manner, the determining unit is specifically configured to: if the receiving unit receives the first indication information and the second indication information, determine, according to the first indication information and the second indication information, Whether the first time-frequency resource and the second time-frequency resource overlap; if the first time-frequency resource and the second time-frequency resource overlap, it is determined that the first base station and the second base station have a resource conflict.

In combination with the foregoing possible implementation manners, in a second possible implementation manner, the method further includes: sending And a unit, configured to: if the determining unit determines that the first base station and the second base station have a resource conflict, send resource conflict indication information to the first base station, where the resource conflict indication information is used to indicate that a resource conflict exists.

In combination with the foregoing possible implementation manner, in a third possible implementation manner, the sending unit is configured to: send a resource conflict message to the first base station, where the resource conflict message carries the resource conflict indication information that occupies at least one bit Or transmitting a resource collision energy signal to the first base station.

In combination with the foregoing possible implementation manner, in a fifth possible implementation, the method further includes: a generating unit, configured to generate a random number before the sending unit sends the resource conflict indication information to the first base station; And if the random number generated by the generating unit satisfies the feedback trigger condition of the resource conflict indication information, the resource conflict indication information is sent to the first base station.

In combination with the foregoing possible implementation manner, in a sixth possible implementation, the feedback triggering condition of the resource conflict indication information includes at least one of the following: the random number is in a first value range; the random number and the feedback reference The difference in value is in the second range of values, wherein the feedback reference value is configured by the first base station.

With reference to the foregoing possible implementation manner, in a seventh possible implementation, the method further includes: a measuring unit, configured to send, by the sending unit, the reference signal sent by the first base station before sending the resource conflict indication information to the first base station Performing radio resource management RRM measurement to obtain an RRM measurement result; the sending unit is specifically configured to send the resource conflict indication information to the first base station if the RRM measurement result obtained by the measurement unit is lower than a first threshold.

In combination with the foregoing possible implementation manner, in an eighth possible implementation manner, the receiving unit is further configured to: before the transmitting unit sends the resource conflict indication information to the first base station, receive the third indication sent by the first base station Information, the third indication information is used to indicate a target user equipment in the first user equipment group for feeding back a resource conflict, where the first user equipment group includes the user equipment; the sending unit is specifically configured to receive, if the receiving unit receives The target user equipment indicated by the third indication information is the user equipment, and the resource conflict indication information is sent to the first base station.

In combination with the foregoing possible implementation manner, in a ninth possible implementation manner, the receiving unit is configured to: receive a first enhanced request sending RTS message sent by the first base station, and a second enhanced RTS message sent by the second base station At least one of the first enhanced RTS messages carrying the first indication information, the second enhanced RTS message carrying the second indication information; the sending unit is specifically configured to The first base station sends an enhanced clear to send CTS message, where the enhanced CTS message carries the resource conflict indication information.

In combination with the foregoing possible implementation manner, in an eleventh possible implementation manner, the receiving unit is specifically configured to receive the first RTS message sent by the first base station on a third unlicensed carrier, and the second base station is in the first The second RTS message sent on the four unlicensed carriers; the sending unit includes: a resource contention subunit, configured to compete for time-frequency resources on the third unlicensed carrier; and the first sending subunit, if the resource competing subunit Competing for the third time-frequency resource on the third unlicensed carrier, and transmitting the enhanced CTS message to the first base station on the third time-frequency resource.

In conjunction with the foregoing possible implementation manner, in a twelfth possible implementation manner, the receiving unit is further configured to: before the sending, by the sending unit, the resource conflict indication information, send the fourth Instructing information, the fourth indication information is used to indicate a feedback resource allocated by the first base station to the user equipment on the first authorized carrier, where the at least one authorized carrier configured by the first base station includes the first authorized carrier; Specifically, the method uses the feedback resource indicated by the fourth indication information received by the receiving unit to send the resource conflict indication information to the first base station.

In combination with the foregoing possible implementation manner, in a fourteenth possible implementation manner, the feedback resource is shared by multiple user equipments, and the feedback resource includes multiple resource blocks; the sending unit includes: a selection submodule, configured to The target resource block is randomly selected from the plurality of resource blocks, and the second sending sub-module is configured to send the resource conflict indication information to the first base station by using the target resource block selected by the selecting sub-module.

In combination with the foregoing possible implementation manner, in a fifteenth possible implementation, the second base station is further configured with at least one authorized carrier, where the receiving unit is configured to receive, by using the first base station, the second authorized carrier. At least one of the indication information and the second indication information sent by the second base station on the third authorized carrier, where the at least one authorized carrier configured by the first base station includes the second authorized carrier, the second base station Configuring at least one authorized carrier including the third authorized carrier wave.

In combination with the foregoing possible implementation manner, in a sixteenth possible implementation manner, the receiving unit is configured to receive, by detecting, a downlink control channel of the second authorized carrier, and detecting a downlink control channel of the third authorized carrier, At least one of an indication information and the second indication information.

In combination with the foregoing possible implementation manner, in the eighteenth possible implementation, before receiving at least one of the first indication information sent by the first base station and the second indication information sent by the second base station, the receiving unit further And receiving, by the first base station, the fifth indication information, where the fifth indication information includes at least one of the following information: identifier information of the second base station, identifier information of the fifth carrier, and a carrier type of the fifth carrier And the second base station sends the second indication information on the fifth carrier, where the carrier type of the fifth carrier is an authorized carrier or an unlicensed carrier; and according to the fifth indication information, detecting, sending, by the second base station The second indication information.

In combination with the foregoing possible implementation manner, in a twentieth possible implementation manner, the receiving unit is further configured to: receive at least one of first indication information sent by the first base station and second indication information sent by the second base station Before receiving the sixth indication information sent by the first base station, the sixth indication information includes at least one of the following information: identifier information of the first base station, identifier information of the sixth carrier, and carrier of the sixth carrier a type of information, where the first base station sends the second indication information on the sixth carrier, the carrier type of the sixth carrier is an authorized carrier or an unlicensed carrier; and the first base station is detected according to the sixth indication information. The first indication information sent.

In combination with the foregoing possible implementation manner, in the twenty-first possible implementation manner, the sending unit is further configured to: before the receiving unit receives the at least one of the first indication information and the second indication information, The first base station sends an RRM measurement result, so that the first base station determines the user equipment as a target user equipment for detecting a resource conflict according to the RRM measurement result.

In a fourth aspect, a base station is provided, including: a resource contention unit, configured to be in the first unauthorized Compensating time-frequency resources on the carrier, wherein the base station is configured with at least one authorized carrier and at least one unlicensed carrier including the first unlicensed carrier; and the sending unit is configured to: if the resource contention unit is on the first unlicensed carrier Competing with the first time-frequency resource, the first user information is sent to the first user equipment, where the first indication information is used to indicate the first time-frequency resource that the base station contends, and the receiving unit is configured to receive the first user equipment. And the resource conflict indication information is used to indicate that there is a resource conflict according to the resource conflict indication information that is sent by the sending unit, and the resource scheduling unit is configured to: according to the resource conflict indication information received by the receiving unit, The first time-frequency resource is scheduled.

In a first possible implementation manner, the receiving unit is configured to: receive a resource conflict message sent by the first user equipment according to the first indication information, where the resource conflict message carries the resource conflict indication that occupies at least one bit And receiving a resource conflict energy signal sent by the first user equipment according to the first indication information.

In combination with the foregoing possible implementation manner, in a second possible implementation, the resource conflict indication information is further used to indicate a time-frequency resource in which the resource conflict exists in the first time-frequency resource.

In conjunction with the foregoing possible implementation manner, in a fourth possible implementation, the method further includes: a first determining unit, configured to: before the receiving unit receives the resource conflict indication information that is sent by the first user equipment according to the first indication information, Determining, from the at least one user equipment included in the first user equipment group, a target user equipment for feeding back resource conflict indication information, where the first user equipment belongs to the first user equipment group; the sending unit is further configured to The at least one user equipment sends a third indication information, where the third indication information is used to indicate the target user equipment determined by the first determining unit, and the receiving unit is further configured to receive the first user equipment that is sent according to the sending unit The third indication information determines the resource conflict indication information that is sent according to the first indication information when the target user equipment is the first user equipment.

In combination with the foregoing possible implementation manner, in a fifth possible implementation manner, the sending unit is configured to send an enhanced request to send an RTS message to the first user equipment, where the enhanced RTS message carries the first indication information; And receiving, by the first user equipment, an enhanced clear sending CTS message sent according to the first indication information, where the enhanced CTS message carries the resource conflict indication information.

In combination with the foregoing possible implementation manner, in a sixth possible implementation, the enhanced RTS message carries at least one of the following information: identifier information of the base station, identifier information of the first cell controlled by the base station, and the Identification information of a first user equipment group to which the user equipment belongs in the base station, where the first cell is a serving cell of the first user equipment.

In conjunction with the foregoing possible implementation manner, in a seventh possible implementation, the sending unit is specifically configured to send the enhanced RTS message to the first user equipment on a third unlicensed carrier; the receiving unit is specifically configured to receive the The enhanced CTS message sent by the first user equipment on the third time-frequency resource according to the enhanced RTS message sent by the sending unit, where the third time-frequency resource is that the first user equipment is on the third unlicensed carrier Competing.

In combination with the foregoing possible implementation manner, in an eighth possible implementation manner, the sending unit is further configured to: before the receiving unit receives the resource conflict indication information that is sent by the first user equipment according to the first indication information, The user equipment sends the fourth indication information, where the fourth indication information is used to indicate the feedback resource allocated by the base station to the first user equipment on the first authorized carrier, where the at least one authorized carrier configured by the first base station includes the first And the receiving unit is configured to receive the resource conflict indication information sent by the first user equipment on the feedback resource indicated by the fourth indication information sent by the sending unit.

In combination with the foregoing possible implementation manners, in a tenth possible implementation manner, the feedback resource is shared by multiple user equipments that include the first user equipment, and the feedback resource includes multiple resource blocks; Receiving the resource conflict indication information sent by the first user equipment on the target resource block, where the target resource block is randomly selected by the first user equipment from the multiple resource blocks.

In combination with the foregoing possible implementation manner, in an eleventh possible implementation manner, the sending unit is configured to send the first indication information to the first user equipment on the second authorized carrier, where the first base station is configured An authorized carrier includes the second authorized carrier.

In combination with the foregoing possible implementation manner, in a twelfth possible implementation manner, the sending unit is further configured to: before sending the first indication information to the first user equipment, send the fifth indication information to the first user equipment, The fifth indication information includes at least one of the following information: a label of the second base station The second information indicating that the second information is sent by the second base station on the fifth carrier, where the second indication information is used to indicate the second information. A second time-frequency resource that the base station contends on the second unlicensed carrier, where the carrier type of the fifth carrier is an authorized carrier or an unlicensed carrier.

In combination with the foregoing possible implementation manner, in a fourteenth possible implementation manner, the receiving unit is further configured to: before the sending, by the sending unit, the fifth indication information, to the first user equipment, The backhaul link receives the configuration information sent by the second base station, and the configuration information includes the information of the fifth carrier. The base station further includes: a generating unit, configured to generate the first information according to the configuration information received by the receiving unit Five instructions.

In combination with the foregoing possible implementation manner, in a fifteenth possible implementation manner, the sending unit is further configured to: before sending the first indication information to the first user equipment, send the sixth indication information to the first user equipment, The sixth indication information includes at least one of the following information: identification information of the first base station, identification information of the sixth carrier, and information of a carrier type of the sixth carrier, where the first base station is on the sixth carrier The second indication information is sent, and the carrier type of the sixth carrier is an authorized carrier or an unlicensed carrier.

In combination with the foregoing possible implementation manner, in the seventeenth possible implementation, the first indication information is further used to indicate a feedback reference value, so that the first user equipment generates the reference user value according to the feedback reference value and the first user equipment. The difference of the random values determines whether the resource conflict indication information is sent to the base station.

Based on the foregoing technical solution, the communication method, the user equipment, and the base station provided by the embodiment of the present invention receive, by the user equipment, a first time base station that is sent by the first base station to indicate that the first base station competes on the first unlicensed carrier. An indication information, and/or receiving second indication information that is sent by the second base station to indicate time-frequency resources that the second base station contends on the second unlicensed carrier, and according to the received first indication information and And/or the second indication information, determining whether the first base station and the second base station have resource conflicts, which is beneficial to avoid avoiding that the first base station and the second base station are hidden nodes The interference between the first base station and the second base station is caused, thereby improving system performance.

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 or the description of the prior art will be briefly described below. Obviously, the drawings described below are only the present invention. For some embodiments, other drawings may be obtained from those of ordinary skill in the art without departing from the drawings.

FIG. 1 is a schematic diagram of an example of a scenario in which a licensed carrier and an unlicensed carrier perform cooperative transmission.

2 is a schematic diagram of another scenario example of cooperative transmission of an authorized carrier and an unlicensed carrier.

3 is a schematic diagram of a hidden node in a scenario in which a licensed carrier and an unlicensed carrier perform cooperative transmission.

4 is another schematic diagram of a hidden node in a scenario in which a licensed carrier and an unlicensed carrier perform cooperative transmission.

FIG. 5 is a schematic flowchart of a communication method according to an embodiment of the present invention.

FIG. 6 is a schematic flowchart of another communication method according to an embodiment of the present invention.

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

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

FIG. 9 is a schematic block diagram of a user equipment according to an embodiment of the present invention.

FIG. 10 is a schematic block diagram of a base station according to an embodiment of the present invention.

FIG. 11 is a schematic block diagram of another user equipment according to an embodiment of the present invention.

FIG. 12 is a schematic block diagram of another base station 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 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, such as a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, and a wideband code. Wideband Code Division Multiple Access (WCDMA) system, general packet radio service (General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunications System (Universal Mobile Telecommunication System, UMTS), etc.

It should be understood that, in the embodiment of the present invention, a user equipment (User Equipment, UE) may be referred to as a terminal (Mobile), a mobile station (Mobile Station, MS), a mobile terminal (Mobile Terminal), etc., and the user equipment may be A radio access network (RAN) communicates with one or more core networks. For example, the user equipment may be a mobile phone (or a cellular phone), a computer with a mobile terminal, etc., for example, the user equipment may also Portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange voice and/or data with a wireless access network.

It should also be understood that, in the embodiment of the present invention, the base station may be a Base Transceiver Station (BTS) in GSM or CDMA, a base station (NodeB) in WCDMA, or an evolved base station in LTE ( Evolved Node B, eNB or e-NodeB), which is not limited by the present invention.

It should also be understood that, in the embodiment of the present invention, the time-frequency resource may specifically refer to a time domain resource or a frequency domain resource, or a time domain resource and a frequency domain resource. Correspondingly, the time-frequency resource that the base station contends on the certain unlicensed carrier may be the time resource that the base station contends on the unlicensed carrier, or the frequency resource that the base station contends on the unlicensed carrier, or The time and frequency resources that the base station contends on the unlicensed carrier are not limited in this embodiment of the present invention.

It should also be understood that when the embodiment of the present invention is applied to a TDD system, the carrier may have both an uplink subframe configuration and a downlink subframe configuration. When the embodiment of the present invention is applied to an FDD system, the carrier may be specifically an uplink carrier or a downlink carrier, or a carrier pair composed of an uplink carrier and a downlink carrier, and the embodiment of the present invention is not limited thereto.

FIG. 5 is a schematic flowchart of a communication method 100 according to an embodiment of the present invention. The method 100 can be applied to a scenario in which a user equipment in a cellular network and a serving base station of the user equipment support communication by using an unlicensed time-frequency resource, such as the scenario shown in FIG. 1 or FIG. The method 100 can be performed by a user equipment. Specifically, the first base station may control multiple cells, where the multiple cells include at least one U-Cell and at least one L-Cell, but the embodiment of the present invention is not limited thereto.

S110: Receive at least one of first indication information sent by the first base station and second indication information sent by the second base station, where the first indication information is used to indicate that the first base station is on the first unlicensed carrier. Competing first time-frequency resource, the second indication information is used to indicate a second time-frequency resource that the second base station contends on the second unlicensed carrier, where the first base station is configured with at least one authorized carrier and At least one unlicensed carrier of the first unlicensed carrier is configured, and the second base station is configured with at least one unlicensed carrier including the second unlicensed carrier.

The user equipment may be located within the coverage of the first base station and within the coverage of the second base station, that is, the user equipment is located within a common coverage of the first base station and the second base station. The first base station may be a serving base station of the user equipment, and the second base station may be a neighbor base station of the first base station. The first base station and the second base station may be hidden nodes, that is, the first base station does not receive the wireless signal sent by the second base station, and the second base station does not receive the wireless signal sent by the first base station. Optionally, the first base station and the second base station may communicate by using an X2 interface, that is, using a backhaul link, where the second base station may be a neighboring base station of the first base station, but the embodiment of the present invention is not limited thereto. .

The first base station may be an access point in a cellular network, such as a BS or an eNB, the first base station being configured with at least one authorized carrier and at least one unlicensed carrier. The second base station may be an access point in the cellular network, and may be configured with at least one authorized carrier and at least one unlicensed carrier; or the second base station may also be an access point (AP) of the WLAN, and correspondingly, And at least one unlicensed carrier may be configured, but the embodiment of the present invention is not limited thereto.

The first base station may contend for the time-frequency resource on the first unlicensed carrier, and send the first indication information when competing for the time-frequency resource. The second base station may contend for the time-frequency resource on the second unlicensed carrier, and send the second indication information when competing for the time-frequency resource. The first unlicensed carrier and the second unlicensed carrier may be the same or different, and the embodiment of the present invention is not limited thereto.

S120. Determine, according to at least one of the received first indication information and the second indication information, whether the second base station and the first base station have a resource conflict.

The resource conflict between the second base station and the first base station may be that the unlicensed time-frequency resources that the second base station contends with the unlicensed time-frequency resources that the first base station contends with, that is, partially or completely overlapping, for example, the The unlicensed time-frequency resource that the second base station contends with the unlicensed time-frequency resource that the first base station contends partially or completely overlaps in the time domain, or the unlicensed time-frequency resource that the second base station contends with the first The unlicensed time-frequency resources that the base station competes for partially or completely overlap in the frequency domain.

Therefore, the communication method according to the embodiment of the present invention receives, by the user equipment, first indication information, which is sent by the first base station, for indicating time-frequency resources that the first base station contends on the first unlicensed carrier, and/or receives The second base station sends the second base station to indicate that the second base station is on the second unlicensed carrier. And determining, by the first indication information and/or the second indication information, whether there is a resource conflict between the first base station and the second base station, which is beneficial to avoid A base station and the second base station are hidden nodes of each other to cause interference between the first base station and the second base station, thereby improving system performance.

In the embodiment of the present invention, the carrier and the cell have a one-to-one correspondence, wherein the authorized carrier corresponds to the authorized cell L-Cell, and the unlicensed carrier corresponds to the unlicensed cell U-Cell. The embodiments of the present invention are described in terms of "authorized carrier" and "unlicensed carrier", but may be described by using an "authorized cell" and an "unauthorized cell", and the embodiment of the present invention is not limited thereto.

The first base station and the second base station may send the first indication information and the second indication information in multiple forms. As an optional embodiment, S110, the receiving the at least one of the first indication information sent by the first base station and the second indication information sent by the second base station, includes:

Receiving at least one of a first enhanced request sending RTS message sent by the first base station and a second enhanced RTS message sent by the second base station, where the first enhanced RTS message carries the first indication information, the second enhanced RTS The message carries the second indication information.

At this time, the first base station sends a first enhanced RTS message to indicate a first time-frequency resource that the first base station contends on the first unlicensed carrier, and the second base station sends a second enhanced RTS message to indicate the first a second time-frequency resource that the second base station contends on the second unlicensed carrier. The first enhanced RTS message and the second RTS message may be sent on the authorized carrier or the unlicensed carrier, which is not limited in this embodiment of the present invention.

Optionally, the first enhanced RTS message may carry at least one of the following information: identifier information of the first base station, identifier information of the first cell controlled by the first base station, and the user equipment in the first base station Identification information of the first user equipment group, where the first cell is a serving cell of the user equipment.

The identifier information of the first base station that carries the first base station may indicate that the first time base resource that the first base station contends on the first unlicensed carrier can be served by the first base station. use.

The first enhanced RTS message carrying the identifier information of the first cell may indicate that the first time-frequency resource can be used by at least one user equipment in the first cell, where the first cell is a serving cell of the user equipment. The user equipment may have one or more serving cells, and the first cell may be an authorized cell or an unlicensed cell, and optionally, the first cell may be a primary cell of the user equipment, but the embodiment of the present invention is not limited thereto. this.

The first enhanced RTS message carrying the identifier information of the first user equipment group may indicate that the first time-frequency resource can be used by the at least one user equipment included in the first user equipment group, but the embodiment of the present invention is not limited thereto.

The second enhanced RTS message may also carry similar information, and details are not described herein again. In addition, the first indication information and the second indication information may also have other forms, and the embodiment of the present invention is not limited thereto.

In the embodiment of the present invention, the first base station may send the first indication information on the authorized carrier or the unlicensed carrier, and correspondingly, the user equipment may detect the first indication information on the authorized carrier or the unlicensed carrier. Similarly, the second base station may also send the second indication information on the authorized carrier or the unlicensed carrier. Accordingly, the user equipment may detect the second indication information on the authorized carrier or the unlicensed carrier.

As an optional embodiment, the second base station is further configured with at least one authorized carrier, and correspondingly, S110, the receiving the first indication information sent by the first base station and the second indication information sent by the second base station ,include:

Receiving at least one of the first indication information sent by the first base station on the second authorized carrier and the second indication information sent by the second base station on the third authorized carrier, where the first base station is configured with at least one An authorized carrier includes the second authorized carrier, and the at least one authorized carrier configured by the second base station includes the third authorized carrier.

At this time, the user equipment may receive at least one of the first indication information and the second indication information by detecting a downlink control channel. Correspondingly, the S110, the first indication information that is sent by the first base station on the second authorized carrier, and the second indication information that is sent by the second base station on the third authorized carrier, includes:

And receiving at least one of the first indication information and the second indication information by detecting a downlink control channel of the second authorized carrier and detecting a downlink control channel of the third authorized carrier.

The downlink control channel may include at least one of the following: a physical downlink control channel (PDCCH) and a physical broadcast channel (PBCH).

Specifically, the user equipment may detect the PDCCH, or detect the physical broadcast channel PBCH, or detect the PDCCH and the PBCH at the same time, which is not limited in this embodiment of the present invention.

The user equipment may determine time-frequency resources that need to be detected when detecting the first indication information and the second indication information in multiple manners, for example, may be predefined, or configured on the network side. Optional The time-frequency resource that needs to be detected by the user equipment when detecting the first indication information may be notified by the first base station to the user equipment, and the time-frequency resource that needs to be detected when the user equipment detects the second indication information may be used by the first base station. Or the second base station notifies the user equipment, which is not limited by the embodiment of the present invention.

As an optional embodiment, the time-frequency resource that needs to be detected when the user equipment detects the second indication information may be configured by the first base station. Correspondingly, before S110, the method 100 further includes:

And receiving, by the first base station, the fifth indication information, where the fifth indication information includes at least one of the following information: the identifier information of the second base station, the identifier information of the fifth carrier, and the carrier type information of the fifth carrier. The second base station sends the second indication information on the fifth carrier, where the carrier type of the fifth carrier is an authorized carrier or an unlicensed carrier;

Correspondingly, S110, receiving at least one of the first indication information sent by the first base station and the second indication information sent by the second base station, includes:

And detecting, according to the fifth indication information, the second indication information sent by the second base station.

The fifth indication information is used to indicate that the user equipment detects a configuration corresponding to the second indication information, where the configuration may include a time-frequency resource that needs to be detected when detecting the second indication information. The user equipment may detect the second indication information on the fifth carrier according to the fifth indication information, where the second base station is configured with the fifth carrier. Optionally, the fifth carrier may be an authorized carrier, for example, a third authorized carrier. In this case, the user equipment may detect the second indication information on a downlink control channel of the fifth carrier; or the fifth carrier may For the unlicensed carrier, for example, the second unlicensed carrier, the user equipment can perform blind detection at all times, but the embodiment of the present invention is not limited thereto.

If the correspondence between the base station and the carrier for transmitting the indication information indicating the time-frequency resource that is contending on the unlicensed carrier is pre-defined or configured, the fifth indication information may include the identifier information of the second base station, corresponding The user equipment may determine the fifth carrier according to the identification information of the second base station. If the second base station is not configured with other carriers of the same carrier type as the fifth carrier, the fifth indication information may only include information of a carrier type of the fifth carrier, and the user equipment may be configured according to the fifth carrier. The carrier type information determines the fifth carrier, but the embodiment of the present invention is not limited thereto.

In addition, the first base station may send the fifth indication information on the authorized carrier or the unlicensed carrier. For example, the first base station may contend for resources on the first unlicensed carrier, and the fifth indication information is sent on the first unlicensed carrier; or the first base station may send the fifth on the second authorized carrier. The information is indicated, but the embodiment of the invention is not limited thereto.

In the case that the fifth carrier is an authorized carrier, optionally, the fifth indication information may further enter Determining the configuration information of the downlink control channel of the fifth carrier in a step, or further indicating a specific time-frequency resource configured on the downlink control channel of the fifth carrier for detecting the second indication information, and the user equipment may be in the first The detection is performed on the downlink control channel of the five carriers or on the specific time-frequency resources of the downlink control channel, but the embodiment of the present invention is not limited thereto.

As another optional embodiment, if the fifth carrier is an authorized carrier, the fifth indication information further includes at least one of the following information: resource configuration information of the downlink control channel of the fifth carrier, and the fifth carrier The configured information of the time-frequency resource for transmitting the second indication information, the Cell Radio Network Temporary Identifier (C-RNTI) of the user equipment in the second base station, and the user equipment in the Identification information of the second user equipment group to which the second base station belongs.

The second user equipment grouping may include at least one user equipment, wherein the second base station may classify the at least one user equipment into the same user equipment group according to parameters, such as a location, a service type, and the like of the at least one user equipment. Optionally, the fifth indication information may further include other information, and the embodiment of the present invention is not limited thereto.

If the fifth indication information includes at least one of a C-RNTI of the user equipment in the second base station and identification information of the second user equipment group, the user equipment may adopt the C-RNTI and the second At least one of the identification information of the user equipment group, detecting the downlink control channel of the fifth carrier, that is, detecting the second indication information on the downlink control channel of the fifth carrier. Specifically, if the fifth indication information includes the C-RNTI of the user equipment in the second base station, the user equipment may detect the PDCCH of the fifth carrier by using the C-RNTI. If the fifth indication information includes the identifier information of the second user equipment group, the user equipment may detect the PDCCH and/or the PBCH of the fifth carrier by using the identifier information of the second user equipment group, but the embodiment of the present invention is not limited thereto. this.

In another embodiment, if the fifth indication information includes the identifier information of the second user equipment group, the fifth indication information may further indicate that the at least one user equipment included in the second user equipment group is used for A base station feeds back a target user equipment with a resource conflict. At this time, after receiving the fifth indication information, the user equipment may determine whether the target user equipment indicated by the fifth indication information is the user equipment, and only when determining that the target user equipment is the user equipment, The second indication information is detected on the downlink control channel of the fifth carrier indicated by the fifth indication information, but the embodiment of the present invention is not limited thereto.

The first base station can obtain configuration information of the second base station in multiple manners. As one can In an embodiment, the first base station may receive configuration information of the second base station sent by the second base station by using a backhaul link (ie, an X2 interface) with the second base station, where the configuration of the second base station is configured. The information may include at least one of the following information: the identification information of the second base station, the information of the fifth carrier, the information configured on the fifth carrier for detecting the time-frequency resource of the second indication information, the user The C-RNTI of the device in the second base station and the identification information of the second user equipment group. Optionally, the configuration information of the second base station may further include other information, but the embodiment of the present invention is not limited thereto. The second carrier, the time-frequency resource information (or resource configuration information) of the downlink control channel of the fifth carrier, or the time-frequency resource configured on the fifth carrier for detecting the second indication information may be used by the second The base station is determined separately, or is determined by the first base station and the second base station, which is not limited by the embodiment of the present invention.

In the embodiment of the present invention, the user equipment may determine, by using multiple manners, a configuration for detecting the first indication information. For example, the time-frequency resource may be predefined, or the user equipment is obtained from a predetermined location, or the first base station is configured by high layer signaling or physical layer signaling.

As an optional embodiment, before S110, the method 100 further includes:

And receiving, by the first base station, the sixth indication information, where the sixth indication information includes at least one of the following information: the identifier information of the first base station, the identifier information of the sixth carrier, and the carrier type information of the sixth carrier. The first base station sends the second indication information on the sixth carrier, where the carrier type of the sixth carrier is an authorized carrier or an unlicensed carrier.

The sixth indication information is used to indicate that the user equipment detects the configuration of the first indication information, and the configuration may include a time-frequency resource for detecting the first indication information. The first base station is configured with the sixth carrier. Optionally, the sixth carrier may be an authorized carrier, for example, a second authorized carrier. In this case, the user equipment may detect the first indication information on a downlink control channel of the sixth carrier; or the sixth carrier is The unlicensed carrier, for example, the first unlicensed carrier. In this case, the user equipment can perform blind detection all the time, but the embodiment of the present invention is not limited thereto.

The first base station may send the fifth indication information and the sixth indication information in the same or different messages, which is not limited by the embodiment of the present invention. In addition, the first base station may send the sixth indication information on the authorized carrier or the unlicensed carrier. For example, the first base station may contend for resources on the first unlicensed carrier, and the sixth indication information is sent on the first unlicensed carrier; or the first base station may send the sixth on the second authorized carrier. The information is indicated, but the embodiment of the invention is not limited thereto.

Optionally, the sixth carrier and the carrier that sends the sixth indication information may be the same carrier. This The sixth indication information may not include the identifier information and the carrier type information of the sixth carrier, and the sixth indication information is received on a carrier of the user equipment, and the carrier used to send the sixth indication information may be determined. The first indication information is detected, but the embodiment of the present invention is not limited thereto. Optionally, the sixth indication information may further include other information, and the embodiment of the present invention is not limited thereto.

If the first base station is not configured with other carriers having the same carrier type as the sixth carrier, the sixth indication information may include only information of a carrier type of the sixth carrier, and the user equipment may be configured according to the sixth carrier. The carrier type information determines the sixth carrier, but the embodiment of the present invention is not limited thereto.

If the sixth carrier is an authorized carrier, the sixth indication information may further include at least one of the following information: configuration information of a downlink control channel of the sixth carrier, and configured to send the first downlink carrier Information indicating the time-frequency resource of the information, the C-RNTI of the user equipment in the first base station, and the identification information of the first user equipment group to which the user equipment belongs in the first base station, but the embodiment of the present invention does not Limited to this.

In this way, the user equipment may detect the downlink control channel of the sixth carrier by using the C-RNTI indicated by the sixth indication information and/or the identifier information of the first user equipment group, but the embodiment of the present invention is not limited thereto.

In the embodiment of the present invention, the first base station may configure all user equipments served by the first base station to detect resource conflicts, and send the first indication information to all user equipments of the service. Alternatively, the first base station may also determine, from the plurality of user equipments that serve, the target user equipment for detecting the resource conflict, and send the first indication information to the at least one target user equipment. The first base station can determine the at least one target user equipment in a plurality of manners. Specifically, the first base station may determine, as the target user equipment, the at least one user equipment located at the edge of the coverage of the first base station among the multiple user equipments. Alternatively, the first base station may determine at least one target user equipment from the plurality of user equipments according to a radio resource management (RRM) measurement result reported by the multiple user equipments, where the RRM measurement result The user equipment may be obtained by measuring a reference signal sent by the first base station on a certain unlicensed carrier (for example, the first unlicensed carrier), or may be the user equipment authorized by the first base station. The reference signal transmitted on the carrier is obtained by measurement, and the embodiment of the present invention is not limited thereto. For example, the first base station may lower the Reference Signal Receiving Power (RSRP) in the reported RRM measurement result to be lower than a first preset threshold and/or a Reference Signal Receiving Quality (RSRQ) is lower than User equipment with a second preset threshold It is determined as the target user equipment, but the embodiment of the present invention is not limited thereto.

As another optional embodiment, before receiving the at least one of the first indication information and the second indication information, the method 100 further includes:

And transmitting, by the first base station, the RRM measurement result, so that the first base station determines the user equipment as the target user equipment for detecting a resource conflict according to the RRM measurement result.

In the process of the user equipment detecting the first indication information and the second indication information, the user equipment may receive only the first indication information or the second indication information, or receive the First indication information and the second indication information. If the user equipment only receives one of the first indication information and the second indication information, it indicates that only one of the second base station and the first base station competes for time-frequency resources on the unlicensed carrier, and If another base station does not compete for the time-frequency resource on the unlicensed carrier, the user equipment may determine that there is no resource conflict between the first base station and the second base station. If the user equipment receives the first indication information and the second indication information within a certain period of time, it indicates that both the first base station and the second base station compete for time-frequency resources on the unlicensed carrier. At this time, the user equipment may determine whether the first base station and the second base station are present by comparing the first time-frequency resource indicated by the first indication information with the second time-frequency resource indicated by the second indication information. Resource conflicts.

As an optional embodiment, S120, determining, according to at least one of the received first indication information and the second indication information, whether the first base station and the second base station have a resource conflict, including:

And determining, by the first indication information and the second indication information, whether the first time-frequency resource and the second time-frequency resource overlap according to the first indication information and the second indication information;

If the first time-frequency resource and the second time-frequency resource overlap, it is determined that there is a resource conflict between the first base station and the second base station.

The overlapping of the first time-frequency resource and the second time-frequency resource may mean that the first time-frequency resource and the second time-frequency resource partially or completely overlap. Optionally, the first base station and the second base station may compete for resources in the same unlicensed frequency band, that is, the first unlicensed carrier and the second unlicensed carrier are the same unlicensed carrier, where one base station competes with one A resource on an unlicensed carrier may refer to a time resource that the base station contends to on the unlicensed carrier. In this case, the base station may use all frequency resources on the unlicensed carrier in a time period. Correspondingly, the user equipment may specifically determine whether the first time-frequency resource and the second time-frequency resource overlap in the time domain. If there is overlap, determining that there is a resource conflict between the first base station and the second base station; if not overlapping, determining the first base station and the first There is no resource conflict between the two base stations, but the embodiment of the present invention is not limited thereto.

As another optional embodiment, a base station competing for resources on an unlicensed carrier may also refer to a time and frequency resource that the base station competes on the unlicensed carrier. At this time, the user equipment may determine whether the first time-frequency resource that the first base station contends and the second time-frequency resource that the second base station contends overlap in the frequency domain and the time domain, respectively. If the first time-frequency resource and the second time-frequency resource overlap in the time domain but do not overlap in the frequency domain, or overlap in the frequency domain but do not overlap in the time-frequency domain, the user equipment may determine the first There is no resource conflict between a base station and the second base station, but the embodiment of the present invention is not limited thereto.

As an optional embodiment, after the user equipment determines whether there is a resource conflict between the second base station and the first base station, the user equipment may send, to the first base station, indication information indicating whether there is a resource conflict, Correspondingly, the first base station determines, according to the indication of the indication information, whether there is a resource conflict, and accordingly schedules the first time-frequency resource that is contending. Specifically, if the first base station determines that there is a resource conflict, the first base station may avoid scheduling the unlicensed time-frequency resources that are contending to the user equipment at the cell edge or the user equipment that is in conflict with the feedback resource, for example, the first base station. The unlicensed time-frequency resource is scheduled to the user equipment in the cell center. If the first base station determines that there is no resource conflict, the first base station may flexibly schedule the contending first time-frequency resources to different user equipments according to requirements, but the embodiment of the present invention is not limited thereto.

As another optional embodiment, the user equipment may also send indication information for indicating a resource conflict to the first base station only when it is determined that there is a resource conflict, and not send the first base station when determining that there is no resource conflict. Any instructions. At this time, the first base station may start a timer after transmitting the second indication information. If the first base station does not receive the feedback of the user equipment before the timer expires, the first base station determines that there is no resource conflict, but the embodiment of the present invention is not limited thereto.

As an optional embodiment, the method 100 further includes:

If it is determined that the first base station and the second base station have a resource conflict, the resource conflict indication information is sent to the first base station, where the resource conflict indication information is used to indicate that there is a resource conflict.

The resource conflict indication information may be carried in the message, or the resource conflict indication information may be an energy signal, and correspondingly, the sending the resource conflict indication information to the first base station, including:

Sending a resource conflict feedback message to the first base station, where the resource conflict feedback message carries the resource conflict indication information that occupies at least one bit; or

A resource collision energy signal is transmitted to the first base station.

If the user equipment sends a resource conflict feedback message to the first base station, the resource conflict indication information may occupy one bit, and the value of the bit is 0 or 1 indicates that there is a resource conflict, but the embodiment of the present invention is not limited thereto. .

As another optional embodiment, the resource conflict indication information is further used to indicate time-frequency resources that the first base station and the second base station overlap.

The resource conflict indication information may be further used to indicate time-frequency resources that are overlapped by the first base station and the second base station, and may specifically indicate time domain resources and/or frequency domain resources that are overlapped by the first base station and the second base station, for example, If the first unlicensed carrier and the second unlicensed carrier correspond to the same frequency band, the resource conflict indication information may indicate overlapping time domain resources, but the embodiment of the present invention is not limited thereto.

As an optional embodiment, if the user equipment receives the first enhanced RTS message and the second enhanced RTS message, the user equipment may send an enhanced clear sending (Clear To) carrying the resource conflict indication information to the first base station. Send, CTS) message. Correspondingly, the sending the resource conflict feedback message to the first base station includes:

Sending an enhanced CTS message to the first base station, where the enhanced CTS message carries the resource conflict indication information.

The user equipment may send the enhanced CTS message on the authorized carrier or the unlicensed carrier. For example, the user equipment may send the enhanced CTS message on the sixth carrier that sends the first enhanced RTS message, but the embodiment of the present invention is not limited thereto. . Optionally, if the second base station is an AP in the WLAN, the user equipment may also send a normal CTS message to the first base station while sending the enhanced CTS message, where the normal CTS message may be the CTS in the current WLAN protocol. The message that the common CTS message can carry the identification information of the user equipment in the WLAN system and the information of the first time-frequency resource, so that the second base station can evade according to the normal CTS message sent by the user equipment, thereby further reducing the transmission. The probability of interference, but the embodiment of the invention is not limited thereto.

As another optional embodiment, S110, receiving at least one of the first indication information sent by the first base station and the second indication information sent by the second base station, includes:

Receiving, by the first base station, the first RTS message sent on the third unlicensed carrier and the second RTS message sent by the second base station on the fourth unlicensed carrier;

Correspondingly, the sending the enhanced CTS message to the first base station includes:

Competing for time-frequency resources on the third unlicensed carrier;

And if the third time-frequency resource is contending on the third unlicensed carrier, sending the enhanced CTS message to the first base station on the third time-frequency resource.

In this case, the fifth carrier is specifically a third unlicensed carrier, and the sixth carrier is specifically a fourth unlicensed carrier. Optionally, the third unlicensed carrier and the first unlicensed carrier may be the same or different carriers. The fourth unlicensed carrier and the second unlicensed carrier may be the same or different carriers, which is not limited in this embodiment of the present invention. The user equipment transmits an enhanced CTS message on a third unlicensed carrier that receives the first enhanced RTS message. At this time, the first base station may not configure the time-frequency resource for detecting the first enhanced RTS message and the second enhanced RTS message for the user equipment, and correspondingly, the user equipment may perform blind detection. The first enhanced RTS message and the second enhanced RTS message are received, but the embodiment of the present invention is not limited thereto.

In the existing CSMA/CA mechanism, the access point may send an RTS message to the station and the station feeds back the CTS message to the access point for channel reservation. The reserved resource is only used for data transmission between the access point and the site, and other stations delay transmission according to the CTS message, thereby avoiding transmission interference. The enhanced RTS message and the enhanced CTS message in the embodiment of the present invention are used to determine whether there is a resource conflict, and the first base station may perform resource scheduling according to the enhanced CTS message, and schedule the contented time-frequency resources to be used by multiple user equipments. , thereby improving resource utilization.

If the user equipment sends the resource conflict indication information to the first base station on the unlicensed carrier, the time-frequency resource used by the user equipment to send the resource conflict indication information may be predefined or pre-configured by the first base station. As an optional embodiment, before the sending the resource conflict indication information to the first base station, the method 100 further includes:

And receiving, by the first base station, the fourth indication information, where the fourth indication information is used to indicate the feedback resource allocated by the first base station to the user equipment on the first authorized carrier, where the at least one authorized carrier configured by the first base station includes The first authorized carrier;

Correspondingly, the sending the resource conflict indication information to the first base station includes:

The resource conflict indication information is sent to the first base station by using the feedback resource.

The first authorized carrier and the sixth carrier may be the same carrier or different carriers. The feedback resource may include at least one resource element (Resource Element, RE) in each subframe, but the embodiment of the present invention is not limited thereto. The first base station may determine the feedback resource according to parameters such as the number of configured user equipments for detecting resource conflicts, current resource utilization of the system, and signal quality of the user equipment. In addition, the first base station may send the fourth indication information and the fifth indication information in different messages or the same message, and the embodiment of the present invention is not limited thereto.

Optionally, the fourth indication information is specifically used to indicate an uplink transmission opportunity of the user equipment in each subframe of the first authorized carrier.

For example, the fourth indication information is specifically used to indicate the number of uplink transmission opportunities that the user equipment includes in each subframe, the time occupied by the uplink transmission opportunity (for example, several microseconds), and/or the frequency resource and the uplink transmission opportunity. At least one of the repetition periods, such that the feedback resource includes at least one uplink transmission opportunity in each subframe, and the user equipment can perform feedback in a short time, but the embodiment of the present invention is not limited thereto.

Optionally, the feedback resource includes multiple resource blocks, and each resource block includes at least one resource unit. At this time, the sending the resource conflict indication information to the first base station includes:

Selecting a target resource block randomly from the plurality of resource blocks;

The resource conflict indication information is sent to the first base station on the target resource block.

In addition, in order to improve the utilization of the uplink resources, the feedback resource may be shared by the user equipment and the at least one other user equipment, but the embodiment of the present invention is not limited thereto.

In the embodiment of the present invention, the user equipment may send the resource conflict indication information to the first base station by determining that there is a resource conflict between the second base station and the first base station. Alternatively, the user equipment may determine whether the feedback trigger condition is met after determining that the second base station and the first base station have resource conflicts, and send the resource conflict indication information to the first base station only when the feedback trigger condition is met. The feedback triggering condition may include at least one of the following: the random number generated by the user equipment meets a preset condition, the RRM measurement result of the user equipment meets a preset condition, and the user equipment is configured for the first base station for feedback. a target user equipment of a resource conflict, where the RRM measurement result may correspond to a reference signal sent by an unlicensed carrier of the first base station (for example, a first unlicensed carrier), or may correspond to the first base station. The reference signal transmitted on the carrier is authorized, but the embodiment of the present invention is not limited thereto.

As an optional embodiment, before the sending the resource conflict indication information to the first base station, the method 100 further includes:

Generate a random number;

If the random number satisfies the feedback trigger condition of the resource conflict indication information, the resource conflict indication information is sent to the first base station.

The user equipment may generate a random number when the first base station and the second base station have a resource conflict, and the random number may belong to a certain preset range, for example, between 0 and 10, but the embodiment of the present invention Not limited to this.

Optionally, the feedback triggering condition of the resource conflict indication information includes at least one of the following:

The random number is within a first range of values;

The difference between the random number and the feedback reference value is in a second value range, wherein the feedback reference value is configured by the first base station.

The first range of values may be predefined or pre-configured by the first base station, the first range of values may be between 0 and N (ie belonging to [0, N]), or the first range of values may be greater than N (ie The value of (N, +∞)), N is an integer greater than or equal to 1, but the numerical range may also be other numerical ranges, which is not limited by the embodiment of the present invention. The user equipment may determine whether the generated random number is located in the first value range, and if the random number is in the first value range, the user equipment sends the resource conflict indication information to the first base station; The user equipment does not send the resource conflict indication information to the first base station, but the embodiment of the present invention is not limited thereto.

Alternatively, the user equipment may also determine whether to send the resource conflict indication information to the first base station according to the generated random number and the feedback reference value. The feedback reference value may be an integer greater than or equal to 1, and may be a random number generated by the first base station, or the feedback reference value may also be predefined. The second range of values can also be predefined or pre-configured by the first base station. Optionally, the first base station may indicate the feedback reference value and/or the second value range in the fifth indication information, the sixth indication information, the fourth indication information, the first indication information, or other indication information, The feedback reference value indicated by the first base station in the different first indication information may be different if the first base station indicates the feedback reference value in the first indication information, but the embodiment of the present invention is not limited thereto.

The user equipment may determine whether the generated difference between the random number and the feedback reference value is within the second value range. If the generated difference between the random number and the feedback reference value is in the second value range, the user equipment may send the resource conflict indication information to the first base station; otherwise, the user equipment may not A base station sends the resource conflict indication information, and the embodiment of the present invention is not limited thereto.

In another embodiment, the user equipment may further determine, according to the RRM measurement result, whether the resource conflict indication information is sent to the first base station. Specifically, before the sending the resource conflict indication information to the first base station, the method 100 further includes:

Performing radio resource management RRM measurement on the reference signal sent by the first base station to obtain an RRM measurement result;

Sending the resource conflict indication to the first base station if the RRM measurement result is lower than the first threshold information.

The RRM measurement result may include at least one of RSRP and RSRQ, but the embodiment of the present invention is not limited thereto.

As another optional embodiment, the user equipment may send the resource conflict indication information to the first base station only when the user equipment is the user equipment specified by the first base station for feeding back a resource conflict. Correspondingly, before the sending the resource conflict indication information to the first base station, the method 100 further includes:

And receiving the third indication information that is sent by the first base station, where the third indication information is used to indicate a target user equipment used to feed back a resource conflict in the first user equipment group, where the first user equipment group includes the user equipment;

And if the target user equipment indicated by the third indication information is the user equipment, sending the resource conflict indication information to the first base station.

The third indication information may be sent in the same or different message as the first indication information, the fourth indication information, the fifth indication information, or the sixth indication information, which is not limited by the embodiment of the present invention. In addition, in an example of the present invention, the at least one target user equipment for detecting a resource conflict may include the user equipment for feeding back a resource conflict, that is, the user equipment set composed of the at least one user equipment for feeding back a resource conflict. A subset of a set of user equipment consisting of at least one user equipment for detecting resource conflicts. Specifically, the at least one target user equipment for detecting a resource conflict may be used to feed back a resource conflict. Alternatively, the part of the at least one target user equipment used for detecting the resource conflict is used to feed back a resource conflict, for example, the first indication information indicates that the at least one target user equipment for detecting a resource conflict is used for And transmitting, by the first base station, the first indication information to the target user equipment used for the feedback resource conflict in the at least one target user equipment for detecting the resource conflict, but the embodiment of the present invention Not limited to this.

Therefore, the communication method according to the embodiment of the present invention receives, by the user equipment, first indication information, which is sent by the first base station, for indicating time-frequency resources that the first base station contends on the first unlicensed carrier, and/or receives The second indication information that is sent by the second base station to indicate the time-frequency resource that the second base station contends on the second unlicensed carrier, and is determined according to the received first indication information and/or the second indication information. Whether there is a resource conflict between the first base station and the second base station, which is beneficial to avoid between the first base station and the second base station caused by the first base station and the second base station being hidden nodes Interference, which improves system performance.

FIG. 6 shows another communication method 200 provided by an embodiment of the present invention. The communication method can be performed by any network side device, such as a base station, a base station controller, and the like. The method is performed by the first base station as an example. The first base station is configured with at least one authorized carrier and at least one unlicensed carrier, where the at least one unlicensed carrier includes a first unlicensed carrier, but the present invention The embodiment is not limited to this.

S210. Compete the time-frequency resource on the first unlicensed carrier.

The first base station can be an access point in a cellular network, such as a BS or an eNB. The first base station may compete with other access points and stations in the cellular network for supporting unlicensed carriers and/or access points and stations in the WLAN on the first unlicensed carrier, and the time-frequency resource may refer to the time domain resource. The embodiment of the present invention does not limit the frequency domain resource or the time and frequency resources.

S220. If the first time-frequency resource is contending on the first unlicensed carrier, send the first indication information to the first user equipment, where the first indication information is used to indicate the first time-frequency that the first base station competes for. Resources.

The first base station can be a serving base station of the first user equipment. In addition, the first user equipment may also be located within the coverage of the second base station. The second base station may be a neighboring base station of the first base station, the first base station and the second base station may be hidden nodes, and the second base station may also be configured with at least one unlicensed carrier. The second base station may be another communication device that supports the unlicensed carrier. For example, the access point in the other base station or the WLAN network different from the first base station in the cellular network is not limited in this embodiment of the present invention.

The first base station may contend for the time-frequency resource on the configured at least one unlicensed carrier, and send the first indication information when the first unlicensed carrier contends to the time-frequency resource, where the first base station may only The first user equipment sends the first indication information, or sends the first indication information to a plurality of target user equipments for detecting a resource conflict, including the first user equipment, and the embodiment of the present invention is not limited thereto.

The first base station may send the first indication information on the authorized carrier or on the unlicensed carrier. For example, the first indication information is sent on the first unlicensed carrier, or the first base station may send the first indication information to the first user equipment on a downlink control channel of the authorized carrier, where the downlink control channel may Specifically, it is a PDCCH or a PBCH. It should be noted that the PBCH channel here may be different from the PBCH channel (ie, the MIB: master system information block) of the current LTE system, for example, occupying different time-frequency resources, using different modulation and coding modes, and the like. This hair The embodiment does not limit this.

Similarly, the second base station may also compete for the time-frequency resource on the second unlicensed carrier, and send a second indication for indicating the second time-frequency resource to the first user equipment when competing for the second time-frequency resource. The information that the first user equipment can receive only one of the first indication information and the second indication information or receive the first indication information and the second indication information for a period of time, This embodiment of the present invention does not limit this.

S230. Receive resource conflict indication information that is sent by the first user equipment according to the first indication information, where the resource conflict indication information is used to indicate that a resource conflict exists.

The resource conflict indication information may be specifically used to indicate that a resource conflict exists between the second base station and the first base station, where a resource conflict between the first base station and the second base station may refer to a first time frequency that the first base station competes for. The resources overlap with the second time-frequency resources that the second base station competes with, that is, partially or completely overlapping. As an optional embodiment, if the first unlicensed carrier and the second unlicensed carrier correspond to the same carrier, the resource conflict between the second base station and the first base station may refer to the first time-frequency resource and the second The time-frequency resources partially or completely overlap in the time domain, but the embodiment of the present invention is not limited thereto.

Optionally, the resource conflict indication information is specifically used to indicate that the first time-frequency resource and the second base station compete for a second time-frequency resource that is contending on the second unlicensed carrier, where the second base station is configured to include the At least one unlicensed carrier of the second unlicensed carrier.

If the first user equipment only receives the first indication information, the first user equipment may determine that there is no resource conflict. If the first user equipment receives the first indication information and the second indication information, and determines that the first time-frequency resource that the first base station contends and the second time-frequency resource that the second base station contends overlap, The first user equipment may determine that there is a resource conflict, and send the resource conflict indication information to the first base station.

S240. Scheduling the first time-frequency resource according to the resource conflict indication information.

The first base station may determine that there is a resource conflict according to the resource conflict indication information, and perform resource scheduling accordingly. Specifically, the first base station may be configured to schedule the first time-frequency resource to the user equipment at the cell edge or the first user equipment with the feedback resource conflict, for example, the first base station schedules the first time-frequency resource to the cell. The central user equipment, but the embodiment of the invention is not limited thereto.

Therefore, the communication method according to the embodiment of the present invention, the first base station contends for the time-frequency resource on the first unlicensed carrier, and sends the first user equipment to indicate that the first base station competes on the first unlicensed carrier. The first indication information of the first time-frequency resource is received by the first user equipment according to Decoding the first time-frequency resource according to the resource conflict indication information, and scheduling the first time-frequency resource according to the resource conflict indication information, thereby preventing the first base station from being hidden by the first base station and the second base station Interference with the second base station to improve system performance.

The first indication information may be used only to indicate the first time-frequency resource that the first base station contends. Accordingly, the first user equipment may determine that the first base station and other base stations (for example, the second base station) have resources. When the collision occurs, the resource conflict indication information is sent to the first base station. Alternatively, the first indication information may be further used to indicate a feedback reference value, so that the first user equipment determines whether to send to the first base station according to a difference between the feedback reference value and a random value generated by the first user equipment. The resource conflict indication information. At this time, the first user equipment may generate a random number when determining that the first base station and the other base station have a resource conflict, and determine whether the difference between the random number and the feedback reference value is within a second value range. Determining whether to send the resource conflict indication information to the first base station, so as to avoid interference and resource waste caused by the multiple user equipments transmitting the resource conflict indication information to the first base station at the same time, but the embodiment of the present invention is not limited thereto.

As another alternative embodiment, before S230, the method 200 further includes:

Determining, by the at least one user equipment included in the first user equipment group, a target user equipment for feeding back resource conflict indication information, where the first user equipment belongs to the first user equipment group;

Sending, to the at least one user equipment, third indication information, where the third indication information is used to indicate the target user equipment;

Correspondingly, the S230 receives the resource conflict indication information that is sent by the first user equipment according to the first indication information, and includes:

Receiving the resource conflict indication information that is sent by the first user equipment according to the first indication information when determining that the target user equipment is the first user equipment.

The first base station may determine the target user equipment according to multiple manners, for example, randomly selecting or according to the RRM measurement result or service type of the at least one user equipment, and the like, which is not limited by the embodiment of the present invention. The first base station may send the third indication information to all the user equipments in the first user equipment group, or only send the third indication information to the target user equipment, and the embodiment of the present invention is not limited thereto.

In the embodiment of the present invention, the first base station may configure multiple user equipments to detect resource conflicts, and determine a target user equipment for feeding back resource conflicts from the multiple user equipments when competing for the first time-frequency resources; or The first base station may be configured only for the target for feeding back resource conflicts. The user equipment detects a resource conflict. In this case, the target user equipment is a user equipment for detecting a resource conflict, and the embodiment of the present invention is not limited thereto.

The first base station may send the first indication information to the first user equipment in multiple manners. As an optional embodiment, S220, sending the first indication information to the user equipment, including:

And sending an enhanced RTS message to the user equipment, where the enhanced RTS message carries the first indication information.

The enhanced RTS message can be obtained by improving the RTS message in the existing WLAN protocol. As an optional embodiment, the enhanced RTS message carries at least one of the following information: the identifier information of the first base station, the identifier information of the first cell controlled by the first base station, and the first user equipment in the Identification information of a first user equipment group to which the base station belongs, where the first cell is a serving cell of the first user equipment.

Specifically, the carrying the identifier information of the first base station in the enhanced RTS message may indicate that the first time-frequency resource can be used by at least one user equipment served by the first base station.

The enhanced RTS message carrying the identifier information of the first cell may indicate that the first time-frequency resource can be used by at least one user equipment in the first cell, where the first cell is a serving cell of the first user equipment. The first user equipment may have one or more serving cells, and the first cell may be an authorized cell or an unlicensed cell, and optionally, the first cell may be a primary cell of the first user equipment, but the present invention The embodiment is not limited to this.

The enhanced RTS message carrying the identifier information of the first user equipment group may indicate that the first time-frequency resource can be used by at least one user equipment in the first user equipment group, but the embodiment of the present invention is not limited thereto.

The resource conflict indication information received by the first base station may be specifically an energy signal or carried in a message. As an optional embodiment, S230, receiving resource conflict indication information that is sent by the user equipment according to the first indication information, includes:

Receiving, by the first user equipment, a resource conflict indication message sent according to the first indication information, where the resource conflict indication message carries the resource conflict indication information that occupies at least one bit; or

Receiving a resource conflict energy signal sent by the first user equipment according to the first indication information.

For example, the resource conflict indication information may occupy one bit in the resource conflict feedback message, and the value of the bit is 0 or 1 indicates that there is a resource conflict, but the embodiment of the present invention is not limited thereto.

The overlapping time-frequency resources may be included in the first time-frequency resource that the first base station competes for. All of the time-frequency resources, or part of the time-frequency resources included in the first time-frequency resource that the first base station contends, are not limited in this embodiment of the present invention.

If the first indication information is carried in the enhanced RTS message, the user equipment may send an enhanced CTS message to the first base station when determining that there is a resource conflict. As an optional embodiment, S230, receiving resource conflict indication information that is sent by the user equipment according to the first indication information, includes:

And receiving an enhanced CTS message sent by the user equipment according to the first indication information, where the enhanced CTS message carries the resource conflict indication information.

At this time, the first base station may send the enhanced RTS message on the authorized carrier or the unlicensed carrier, and may receive the enhanced CTS message sent by the user equipment on the authorized carrier or the unlicensed carrier. As another optional embodiment, S220, sending an enhanced RTS message to the user equipment, including:

Transmitting the enhanced RTS message to the first user equipment on the third unlicensed carrier;

Correspondingly, S230, receiving an enhanced CTS message sent by the first user equipment according to the first indication information, includes:

Receiving the enhanced CTS message sent by the first user equipment on the third time-frequency resource according to the first indication information, where the third time-frequency resource is that the first user equipment competes on the third unlicensed carrier of.

The third unlicensed carrier may be the same or different carrier as the first unlicensed carrier. At this time, the first base station may not configure the time-frequency resource for detecting the enhanced RTS message for the user equipment, and correspondingly, the user equipment may perform blind detection to obtain the first base station and/or the second base station. The enhanced RTS message is sent, but the embodiment of the present invention is not limited thereto.

As another optional embodiment, the first base station may send the enhanced RTS message to the user equipment on the authorized carrier, and receive the enhanced CTS message sent by the user equipment on the unlicensed carrier; or the first base station is The enhanced RTS message is sent to the user equipment on the unlicensed carrier, and the enhanced CTS message sent by the user equipment is received on the authorized carrier, and the embodiment of the present invention is not limited thereto.

If the first user equipment sends the resource conflict indication information on the authorized carrier, for example, the enhanced CTS message, the time-frequency resource used by the first user equipment to send the resource conflict indication information may be pre-defined, or by the first The base station is configured in advance for the user equipment. As an optional embodiment, before S230, the method 200 further includes:

Sending, to the user equipment, fourth indication information, where the fourth indication information is used to indicate the first base station a feedback resource allocated to the first user equipment on the first authorized carrier, where the at least one authorized carrier configured by the first base station includes the first authorized carrier;

Correspondingly, the S230 receives the resource conflict indication information that is sent by the user equipment according to the first indication information, and includes:

Receiving the resource conflict indication information sent by the first user equipment on the feedback resource.

The first base station may determine the feedback resource according to parameters such as the number of configured user equipments for detecting resource conflicts, current resource utilization of the system, and signal quality of the user equipment. The feedback resource may be shared by multiple user equipments including the first user equipment, and may include multiple resource blocks, but the embodiment of the present invention is not limited thereto.

Optionally, the fourth indication information is specifically used to indicate an uplink transmission opportunity of the first user equipment in each subframe of the first authorized carrier.

For example, the fourth indication information is specifically used to indicate the number of uplink transmission opportunities that the user equipment includes in each subframe, the time occupied by the uplink transmission opportunity (for example, several microseconds), and/or the frequency resource and the uplink transmission opportunity. At least one of the repetition periods, but the embodiment of the invention is not limited thereto. The feedback resource or the uplink transmission opportunity may be dynamically configured or semi-statically configured, which is not limited in this embodiment of the present invention.

As another optional embodiment, the feedback resource is shared by a plurality of user equipments including the first user equipment, and the feedback resource includes a plurality of resource blocks. At this time, the receiving, by the first user equipment, the resource conflict indication information that is sent by the first user equipment according to the first indication information, includes:

Receiving the resource conflict indication information sent by the first user equipment on the target resource block, where the target resource block is randomly selected by the first user equipment from the multiple resource blocks.

In this way, multiple user equipments share the feedback resource, which can improve resource utilization.

As another optional embodiment, S220, sending the first indication information to the first user equipment, including:

The first indication information is sent to the first user equipment on the second authorized carrier, and the at least one authorized carrier configured by the first base station includes the second authorized carrier.

Specifically, the first base station may send the first indication information on a downlink control channel of the second authorized carrier, where the downlink control channel may include a PDCCH or a PBCH.

Correspondingly, the second base station may send the second indication information on the third authorized carrier.

The second authorized carrier and the first authorized carrier may be the same or different.

The time-frequency resource used by the first base station to transmit the first indication information may be predefined. This In addition, the first base station may configure, in advance, the time-frequency resource for detecting the resource conflict for the user equipment. As an optional embodiment, before S220, the method 200 further includes:

Sending, to the first user equipment, fifth indication information, where the fifth indication information includes at least one of the following information: identifier information of the second base station, identifier information of the fifth carrier, and information about a carrier type of the fifth carrier, The second base station sends the second indication information on the fifth carrier, where the second indication information is used to indicate the second time-frequency resource that the second base station contends on the second unlicensed carrier, the fifth The carrier type of the carrier is an authorized carrier or an unlicensed carrier.

The first base station may send the fifth indication information on the authorized carrier or the unlicensed carrier. For example, the first base station may contend for resources on the first unlicensed carrier, and the fifth indication information is sent on the first unlicensed carrier; or the first base station may be in the second authorized carrier or the first authorization The fifth indication information is sent on the carrier, but the embodiment of the present invention is not limited thereto.

The first base station may send the third indication information, the fourth indication information, and the fifth indication information to the user equipment in the same message or different messages.

As another optional embodiment, if the carrier type of the fifth carrier is an authorized carrier, the fifth indication information further includes at least one of the following information: resource configuration information of the downlink control channel of the fifth carrier, the first Information for transmitting time-frequency resources of the second indication information configured on the five carriers, a radio network temporary identifier C-RNTI of the first user equipment in the second base station, and the second user equipment in the second Identification information of the second user equipment group to which the base station belongs.

The user equipment may use the identifier information of the C-RNTI and/or the second user equipment group to detect the second indication information sent by the second base station, but the embodiment of the present invention is not limited thereto.

The first base station may determine configuration information of the second base station, that is, information included in the fifth indication information, and optionally, the first base station may pass a wired link with the second base station. Obtaining configuration information of the second base station sent by the second base station. Correspondingly, before the sending the fifth indication information to the first user equipment, the method 200 further includes:

Receiving, by the backhaul link with the second base station, configuration information sent by the second base station, where the configuration information includes information about the fifth carrier;

The fifth indication information is generated according to the configuration information.

The second base station may actively send the configuration information of the second base station to the first base station, or may send the configuration information to the first base station after receiving the request sent by the first base station. In addition, the fifth carrier may be determined by the first base station and the second base station, or may be determined independently by the second base station, and the embodiment of the present invention is not limited thereto.

As another alternative embodiment, before S220, the method 200 further includes:

Sending sixth indication information to the first base station, where the sixth indication information includes at least one of the following information: identifier information of the first base station, identifier information of the sixth carrier, and information of a carrier type of the sixth carrier, The first base station sends the second indication information on the sixth carrier, where the carrier type of the sixth carrier is an authorized carrier or an unlicensed carrier.

The first base station is configured with the sixth carrier. Optionally, the sixth carrier may be an authorized carrier, for example, a second authorized carrier. In this case, the user equipment may detect the first indication information on a downlink control channel of the sixth carrier; or the sixth carrier is The unlicensed carrier, for example, the first unlicensed carrier. In this case, the user equipment can perform blind detection all the time, but the embodiment of the present invention is not limited thereto.

The first base station may send the fourth indication information and the fifth indication information in the same or different messages, and the first base station may send the fifth indication information and the sixth indication information in the same or different messages. This embodiment of the present invention does not limit this. In addition, the first base station may send the sixth indication information on the authorized carrier or the unlicensed carrier. For example, the first base station may contend for resources on the first unlicensed carrier, and the sixth indication information is sent on the first unlicensed carrier; or the first base station may be in the second authorized carrier or the first authorization The sixth indication information is sent on the carrier, but the embodiment of the present invention is not limited thereto.

Optionally, the sixth carrier may be the same carrier as the carrier that sends the sixth indication information. In this case, the sixth indication information may not include the identifier information and the carrier type information of the sixth carrier, and the sixth indication information is received on a carrier of the user equipment, and may be determined to be used for sending the sixth indication information. The first indication information is detected on the carrier, but the embodiment of the present invention is not limited thereto. Optionally, the sixth indication information may further include other information, and the embodiment of the present invention is not limited thereto.

If the sixth carrier is an authorized carrier, the sixth indication information may further include at least one of the following information: configuration information of a downlink control channel of the sixth carrier, and configured to send the first downlink carrier Information indicating a time-frequency resource of the information, a C-RNTI of the user equipment in the first base station, and identification information of a first user equipment group to which the user equipment belongs in the first base station.

The first base station can determine, for detecting, from multiple user equipments of the service in multiple manners. At least one user device with a resource conflict. Specifically, the first base station may determine, as the user equipment for detecting a resource conflict, the at least one user equipment that is located at the edge of the coverage of the first base station among the multiple user equipments. Alternatively, the first base station may determine, according to the RRM measurement result reported by the multiple user equipments, the user equipment for detecting a resource conflict from the multiple user equipments. At this time, before the sending the first indication information to the first user equipment, the method 200 further includes:

Receiving a radio resource management RRM measurement result sent by the first user equipment;

And determining, according to the RRM measurement result, the first user equipment as a target user equipment for detecting a resource conflict.

The first base station may determine, according to the RRM measurement result, at least one of a time-frequency resource configured to detect the first indication information and a time-frequency resource used to detect the second indication information, configured by the first user equipment. For example, the first base station may determine, as the user equipment for detecting a resource conflict, the user equipment whose RSRP is lower than a preset threshold in the RRM measurement result, or the user whose RSR measurement result is lower than a preset threshold in the RRM measurement result. The device is determined to be a user equipment for detecting a resource conflict, but the embodiment of the present invention is not limited thereto.

In the communication method 200, the first base station is equivalent to the first base station in the communication method 100, and the second base station is equivalent to the second base station in the communication method 100, and the first user equipment is equivalent to the user equipment in the communication method 100. . The communication method 100 and the communication method 200 describe the communication method provided by the embodiment of the present invention from the user equipment side and the base station side, respectively, and the corresponding parts can refer to each other. For brevity, details are not described herein again.

Therefore, the communication method according to the embodiment of the present invention, the first base station contends for the time-frequency resource on the first unlicensed carrier, and sends the first user equipment to indicate that the first base station competes on the first unlicensed carrier. Receiving the first indication information of the first time-frequency resource, receiving the resource conflict indication information sent by the first user equipment according to the first indication information, and scheduling the first time-frequency resource according to the resource conflict indication information, thereby facilitating avoiding Since the first base station and the second base station are hidden nodes of each other, interference between the first base station and the second base station is caused, thereby improving system performance.

The communication method provided by the embodiment of the present invention will be described in more detail below with reference to specific examples. FIG. 7 is a schematic flowchart of another communication method 300 according to an embodiment of the present invention.

S310. The first base station sends a configuration indication message to the UE when determining that the U-Cell is configured for the UE, where the configuration indication message includes information about at least one second base station and/or a fast physical uplink control channel (Quick-Physical Uplink Control Channel). The configuration information of the Q-PUCCH, where the Q-PUCCH is used by the user equipment to feed back the resource conflict to the first base station.

The first base station may be a serving base station of the UE, and the first base station may configure at least one authorized carrier and at least one unlicensed carrier. The at least one second base station may be specifically at least one neighbor base station of the first base station. Each of the at least one second base station may be configured with at least one unlicensed carrier. The number of the at least one second base station may be one or more, and the information of the at least one second base station may include information of each of the at least one second base station. The information of a second base station may include the identifier information of the second base station (or the identifier information of the cell controlled by the second base station) and the configuration information of the second base station for detecting the resource conflict, that is, the second base station sends the indication for indicating the Configuration information of the indication information of the resources that the second base station contends on the unlicensed carrier.

In addition, the configuration indication information may further include configuration information of the first base station (or a cell controlled by the first base station), where the configuration information may include sending a resource for indicating that the first base station competes on the unlicensed carrier. The configuration information of the indication information, or the configuration information of the indication information used by the first base station (or the cell controlled by the first base station) to indicate the resource that the second base station contends on the unlicensed carrier may not be the second The configuration information of the base station (or the cell controlled by the second base station) is sent in a message, that is, the message may be sent by using different messages, and the embodiment of the present invention is not limited thereto.

The first base station and/or the second base station may send indication information indicating resources contending on the unlicensed carrier on the downlink control channel of the authorized carrier, where the downlink control channel may be a PDCCH or a physical downlink broadcast channel . The configuration information of the downlink control channel may include information about an L-Cell that sends the downlink control channel, and specific time-frequency resource information of the downlink control channel on the L-Cell and/or when the UE detects the downlink control channel. Identification information used. For example, the first base station may allocate a C-RNTI for detecting a PDCCH of the first base station, and the first base station may allocate a C-RNTI for detecting a PDCCH of each second base station; correspondingly, the The identifier information used by the UE to detect the downlink control channel may include the C-RNTI, but the embodiment of the present invention is not limited thereto.

Optionally, the configuration information of the Q-PUCCH may include information about an uplink resource allocated to the UE within one subframe (typically 1 millisecond). For example, in one subframe, multiple uplink transmission opportunities are allocated to the UE, and each uplink transmission opportunity may occupy n microseconds. The number of uplink transmission opportunities allocated to the UE in the one subframe, the time occupied by the uplink transmission opportunity (for example, several microseconds), and/or at least one of the frequency resources and the repetition period of the uplink transmission opportunity may be used by the first base station Flexible control based on the number of UEs, resource usage, and signal quality of the UE. This embodiment of the present invention does not limit this.

Optionally, the first base station may send the configuration indication message on the authorized carrier. The resource that is configured by the first base station and the second base station to detect the resource conflict may be the resource on the authorized carrier, and the uplink resource configured by the Q-PUCCH may be the time-frequency resource on the authorized carrier, but the embodiment of the present invention is not limited thereto. .

S320. After the first base station and the second base station in the at least one second base station compete for the time-frequency resource on the unlicensed carrier, the first base station and the second base station will compete on the U-Cell through the PDCCH or the physical broadcast channel. The information of the obtained time-frequency resource is sent to the UE.

Optionally, the first base station may start a timer after transmitting the information of the time-frequency resource that the first base station contends on the U-Cell. If the first base station does not receive the feedback of the UE before the timer expires, it may be determined that there is no conflict in the contented time-frequency resources, so that data transmission may be performed.

Similarly, the second base station may also start a timer, and may determine that there is no conflict in the unlicensed time-frequency resource when the UE does not receive the feedback before the timer expires, but the embodiment of the present invention is not limited thereto.

S330. The UE acquires information about time-frequency resources that the first base station and the second base station compete on the U-Cell by using the PDCCH or the physical broadcast channel of the first base station and the second base station configured by the first base station.

If the first base station and the second base station send the information of the resources they contend on the U-Cell through the PDCCH, the UE uses the allocated C-RNTI corresponding to the first base station and the second base station to respectively the first base station and the second base station. The PDCCH is detected to acquire information of time-frequency resources that the respective base stations compete on the U-Cell from the PDCCH. Similarly, if the first base station and the second base station send the information of the time-frequency resources that they compete on the U-Cell through the physical layer broadcast channel, the UE may detect that each base station sends the time-frequency resources of the physical layer broadcast channel to obtain Information about the resources they compete on U-Cell.

S340. The UE determines, according to the received resource information that the first base station and the second base station compete on the U-Cell, whether there is a resource conflict (or resource overlap) between the time-frequency resources that the first base station and the second base station compete for.

The resource conflict herein may refer to a partial or total overlap of resources of the first base station competing to resources on the U-Cell and resources on the same U-Cell that the second base station competes with.

If some or all of the resources overlap, the UE may be configured through the S310. The Q-PUCCH performs feedback, and the Q-PUCCH can be located on the L-Cell. Specifically, the UE can perform feedback in the following three ways:

Mode 1: If there is some or all resource conflicts/overlaps, the UE feeds back resource conflict indication information on the Q-PUCCH, and the resource conflict indication information may use one bit to indicate that there is a resource conflict or use an energy signal to indicate that there is a resource conflict. However, embodiments of the invention are not limited thereto.

Manner 2: If there is some or all resource conflicts, the UE feeds back information of the conflicting time-frequency resources on the Q-PUCCH. For example, if only some resources conflict, the UE may explicitly indicate the time range in which the conflict exists, but the embodiment of the present invention is not limited thereto.

Mode 3: The UE performs feedback on the Q-PUCCH regardless of whether there is a resource conflict. That is, if there is no resource conflict, the UE feeds back the indication information indicating that there is no resource conflict on the Q-PUCCH; if there is a resource conflict, the UE may feed back the resource conflict indication information according to the mode 1 or the mode 2.

In addition, if multiple UEs simultaneously detect that there is a resource conflict between the first base station and the second base station, and both pass the Q-PUCCH feedback, the multiple UEs may have resource shortage problems when feeding back on the Q-PUCCH. In order to save the uplink resources, the embodiment of the present invention can reduce the number of UEs that are fed back by:

Manner 4: The first base station receives the RRM measurement results reported by the multiple UEs, and only indicates that the UE with poor received signals is configured on the PDCCH or the physical broadcast channel of the first base station and the second base station for detecting resource conflicts for the RRM measurement result. Time-frequency resources.

Manner 5: When the first base station sends the information of the resources that the first base station contends on the U-Cell on the PDCCH or the physical broadcast channel, generates and sends a random number within a certain range (for example, [0-10]). . When determining that there is a resource conflict, the UE may generate a random number within a certain range, where the range may be pre-configured by the first base station to the UE. If the random number generated by the UE is smaller than (or greater than) the random number sent by the first base station, the UE determines that the resource conflict indication information needs to be sent to the first base station; otherwise, the UE does not send the resource conflict indication information.

Manner 6: The first base station configures a random number range or threshold for the UE. When the UE determines that there is a conflict between the resources that the first base station and the second base station compete on the U-Cell, the UE generates a random number. If the generated random number is (or is not in) the random number range configured by the first base station, or the random number is less than (or greater than) the threshold value configured by the first base station, the UE feeds back the resource conflict indication information. Otherwise, the UE does not feed back the resource conflict indication information.

Mode 7: The first base station allocates a common Q-PUCCH for multiple UEs or one UE group A resource, the common Q-PUCCH resource may include multiple resource blocks. When a certain UE determines that there is a conflict between the resources that the first base station and the second base station compete on the U-Cell, the UE may randomly select one of the Q-PUCCH resources to feed back the resource conflict indication information.

Mode 8: The first base station indicates one or more specific UEs in the UE packet as the UE that feeds back the resource conflict indication information. Optionally, the first base station may indicate in the configuration indication message. In this way, only the UE indicated by the first base station feeds back the resource conflict indication information to the first base station, or further does not detect the PDCCH or the PBCH.

Manner 9: The first base station configures a threshold for the UE. When the RRM measurement result of the first base station is lower than the threshold, the UE feeds back the resource conflict indication information to the first base station.

The embodiment of the present invention may further reduce the number of UEs that perform feedback at the same time, and the embodiment of the present invention is not limited thereto.

S350. The first base station schedules the unlicensed time-frequency resources that are contending on the U-Cell based on the resource conflict indication information reported by the UE.

The first base station may determine how to use the resources that are contending on the U-Cell based on the resource conflict indication information reported by the UE. If the first base station receives the indication information that is sent by the UE to indicate that there is a conflict, the first base station may schedule the contending time-frequency resources to be used by the UE in the cell center, and avoid scheduling the time-frequency resource to the cell edge UE. Or reported a UE with a resource conflict. If the first base station determines that there is no resource conflict, the base station can flexibly schedule the resources to different UEs. The first base station schedules the competing time-frequency resources to the appropriate UE for use.

Therefore, the communication method provided by the embodiment of the present invention configures, by the first base station, a time-frequency resource on the authorized carrier for detecting the downlink control channel of the first base station and the second base station, and the first base station and the second When the base station competes for the time-frequency resource on the unlicensed carrier, the base station transmits the information of the time-frequency resource on the unlicensed carrier that is contending to the user equipment on the time-frequency resource on the configured authorized carrier, and the user equipment receives the information according to the received information. Determining time-frequency resource overlap on the unlicensed carrier that the first base station and the second base station compete for, and feeding back the resource conflict indication information to the first base station, where the first base station competes against the non-competitive Scheduling time-frequency resources on the licensed carrier can avoid interference problems caused by hidden nodes, thereby improving system performance.

FIG. 8 shows another communication method 400 provided by an embodiment of the present invention.

S410. The UE receives the configuration information of the second base station that is sent by the first base station, where the configuration information of the second base station includes the identifier information of the second base station or the identifier information of the cell controlled by the second base station.

In addition, the configuration information may further include grouping information of the first base station to the UE, That is, the UE is allocated one UE group, and includes the identification information of the UE group.

Optionally, the configuration information may be used to indicate the type of the cell used by the first base station and/or the second base station to send the enhanced RTS message, and the type of the cell may be a U-Cell or an L-Cell, but the embodiment of the present invention Not limited to this.

S420. The first base station and the second base station send an enhanced RTS message. The enhanced RTS message sent by each base station may include the identity information of the base station, or the identity information of one cell of the base station, or the identity information of the UE group to which the UE belongs.

The enhanced RTS message includes the identity information of the base station or the cell, and is used to indicate that the time-frequency resource on the unlicensed carrier that is in the competition indicated by the RTS can be used by the base station or the LAA UE in the cell.

The identification information of the UE group to which the UE is included in the enhanced RTS message is used to indicate that the time-frequency resources on the contending unlicensed carrier indicated in the RTS can be used by the group of LAA UEs.

Specifically, the first base station and the second base station may send the enhanced RTS message on the L-Cell or on the U-Cell. If the transmission is performed on the U-Cell, the base station may transmit through the enhanced WiFi module, or may be transmitted through the enhanced LTE system module, which is not limited in the present invention.

S430. The UE detects an enhanced RTS message sent by multiple base stations. In addition, when the UE detects that there is a conflict/overlap of resources on the U-Cell that the first base station and the second base station compete for, the UE determines to send an enhanced CTS message to the first base station.

The resource conflict may refer to a partial or total overlap of the resources on the same U-Cell that the first base station competes with the resources on the U-Cell and the second U-cell. The enhanced CTS message may carry the resource conflict indication information or further carry the information of the conflicting time-frequency resource, and the embodiment of the present invention is not limited thereto. The enhanced CTS message may be sent by the L-Cell or by the U-Cell, and the embodiment of the present invention is not limited thereto.

S440. The first base station schedules resources that are contending on the U-Cell based on the enhanced CTS message reported by the UE.

The first base station schedules the contending resources for use by the appropriate UE. In addition, the method 400 may also adopt a similar measure to the mode 4 to the mode 9 to reduce the probability that multiple UEs simultaneously feed back the enhanced CTS message. For brevity, no further details are provided herein.

It should be noted that the examples of FIG. 7 and FIG. 8 are intended to help those skilled in the art to better understand the embodiments of the present invention and not to limit the scope of the embodiments of the present invention. Those skilled in the art according to the given It is apparent that various modifications and changes can be made to the examples of FIG. 7 and FIG. 8, and such modifications or variations are also within the scope of the embodiments of the present invention.

It should be understood that the size of the sequence numbers of the above processes does not imply a sequence of executions, and the order of execution of the processes should be determined by its function and internal logic, and should not be construed as limiting the implementation process of the embodiments of the present invention.

The communication method according to an embodiment of the present invention is described in detail above with reference to FIG. 1 to FIG. 8. Hereinafter, a user equipment and a base station according to an embodiment of the present invention will be described with reference to FIG. 9 to FIG.

FIG. 9 shows a user equipment 500 according to an embodiment of the present invention. The user equipment 500 includes:

The receiving unit 510 is configured to receive at least one of the first indication information sent by the first base station and the second indication information sent by the second base station, where the first indication information is used to indicate that the first base station is in the first unlicensed carrier a first time-frequency resource that is contending, the second indication information is used to indicate a second time-frequency resource that the second base station contends on the second unlicensed carrier, where the first base station is configured with at least one authorized carrier And at least one unlicensed carrier including the first unlicensed carrier, the second base station configured with at least one unlicensed carrier including the second unlicensed carrier;

The determining unit 520 is configured to determine, according to at least one of the first indication information and the second indication information received by the receiving unit 510, whether the first base station and the second base station have a resource conflict.

Therefore, the user equipment according to the embodiment of the present invention receives the first indication information sent by the first base station to indicate the time-frequency resource that the first base station competes on the first unlicensed carrier, and/or receives the first indication information. The second indication information that is sent by the second base station to indicate the time-frequency resource that the second base station contends on the second unlicensed carrier, and determines the first according to the received first indication information and/or the second indication information. Whether there is a resource conflict between a base station and the second base station is beneficial to avoid interference between the first base station and the second base station caused by the first base station and the second base station being hidden nodes, thereby improving system performance.

The resource conflict between the second base station and the first base station may be that the unlicensed time-frequency resources that the second base station contends with the unlicensed time-frequency resources that the first base station contends with, that is, partially or completely overlapping, for example, the The unlicensed time-frequency resources that the second base station contends with and the unlicensed time-frequency resources that the first base station contends partially or completely overlap in the time domain.

Optionally, the determining unit 520 is specifically configured to:

If the receiving unit 510 receives the first indication information and the second indication information, determining, according to the first indication information and the second indication information, whether the first time-frequency resource and the second time-frequency resource are overlapping;

As another optional embodiment, the user equipment 500 further includes:

And a sending unit, configured to: if the determining unit 520 determines that the first base station and the second base station have a resource conflict, send the resource conflict indication information to the first base station, where the resource conflict indication information is used to indicate that there is a resource conflict.

As another optional embodiment, the sending unit is specifically configured to:

A resource collision energy signal is transmitted to the first base station.

Specifically, the resource conflict indication information may occupy one or more bits in the resource conflict feedback message.

As another optional embodiment, the user equipment 500 further includes:

a generating unit, configured to generate a random number before the sending unit sends the resource conflict indication information to the first base station;

Correspondingly, the sending unit is specifically configured to send the resource conflict indication information to the first base station if the random number generated by the generating unit satisfies a feedback trigger condition of the resource conflict indication information.

As an optional embodiment, the feedback trigger condition of the resource conflict indication information includes at least one of the following:

The random number is within a first range of values;

As another optional embodiment, the user equipment 500 further includes: a measuring unit, configured to perform radio resource management RRM on the reference signal sent by the first base station before the sending unit sends the resource conflict indication information to the first base station. Measure to obtain RRM measurement results;

Correspondingly, the sending unit is specifically configured to send the resource conflict indication information to the first base station if the RRM measurement result obtained by the measurement unit is lower than a first threshold.

As another optional embodiment, the receiving unit 510 is further configured to: in the sending unit to the first Before receiving the resource conflict indication information, the first base station receives the third indication information that is sent by the first base station, where the third indication information is used to indicate the target user equipment used for the feedback resource conflict in the first user equipment group, where the first User equipment grouping includes the user equipment;

Correspondingly, the sending unit is specifically configured to send the resource conflict indication information to the first base station if the target user equipment indicated by the third indication information received by the receiving unit 510 is the user equipment.

As another optional embodiment, the receiving unit 510 is specifically configured to: receive at least one of a first enhanced request sending RTS message sent by the first base station and a second enhanced RTS message sent by the second base station, where the An enhanced RTS message carries the first indication information, where the second enhanced RTS message carries the second indication information;

Correspondingly, the sending unit is configured to send an enhanced clear sending CTS message to the first base station, where the enhanced CTS message carries the resource conflict indication information.

As another optional embodiment, the first enhanced RTS message carries at least one of the following information: identifier information of the first base station, identifier information of the first cell controlled by the first base station, and the user equipment is in the Identification information of the first user equipment group to which the first base station belongs, where the first cell is a serving cell of the user equipment.

As another optional embodiment, the receiving unit 510 is specifically configured to receive the first RTS message sent by the first base station on a third unlicensed carrier and the second base station send the fourth unlicensed carrier Two RTS messages;

Correspondingly, the sending unit comprises:

a resource competition subunit, configured to compete for time-frequency resources on the third unlicensed carrier;

And the first sending subunit, if the resource competing subunit contends to the third time-frequency resource on the third unlicensed carrier, sending the enhanced CTS message to the first base station on the third time-frequency resource.

As another optional embodiment, the receiving unit 510 is further configured to:

Before the transmitting unit sends the resource conflict indication information to the first base station, receiving the fourth indication information that is sent by the first base station, where the fourth indication information is used to indicate that the first base station is the user equipment on the first authorized carrier. The allocated feedback resource, the at least one authorized carrier configured by the first base station includes the first authorized carrier;

Correspondingly, the sending unit is configured to: send the resource conflict indication information to the first base station by using the feedback resource indicated by the fourth indication information received by the receiving unit 510.

As another optional embodiment, the fourth indication information is specifically used to indicate that the user equipment is in the An uplink transmission opportunity in each subframe of the first authorized carrier.

At this time, the feedback resource includes at least one uplink transmission opportunity in each subframe of the first authorized carrier.

As another alternative embodiment, the feedback resource is shared by a plurality of user devices, and the feedback resource includes a plurality of resource blocks. At this time, the sending unit includes:

Selecting a submodule for randomly selecting a target resource block from the plurality of resource blocks;

The second sending submodule is configured to send the resource conflict indication information to the first base station by using the target resource block selected by the selecting submodule.

As another optional embodiment, the second base station is further configured with at least one authorized carrier;

The receiving unit 510 is specifically configured to receive at least one of first indication information that is sent by the first base station on the second authorized carrier, and the second indication information that is sent by the second base station on the third authorized carrier, where The at least one authorized carrier configured by the first base station includes the second authorized carrier, and the at least one authorized carrier configured by the second base station includes the third authorized carrier.

Optionally, the receiving unit 510 is configured to receive at least one of the first indication information and the second indication information by detecting a downlink control channel of the second authorized carrier and detecting a downlink control channel of the third authorized carrier. .

Optionally, the downlink control channel includes at least one of the following: a physical downlink control channel and a physical broadcast channel.

Receiving the fifth indication information sent by the first base station, where the fifth indication information includes the following information, before receiving the at least one of the first indication information sent by the first base station and the second indication information sent by the second base station At least one of: the identifier information of the second base station, the identifier information of the fifth carrier, and the carrier type information of the fifth carrier, where the second base station sends the second indication information on the fifth carrier, where The carrier type of the five carriers is an authorized carrier or an unlicensed carrier;

As another optional embodiment, if the carrier type of the fifth carrier is an authorized carrier, the fifth indication information further includes at least one of the following information: resource configuration information of the downlink control channel of the fifth carrier, the first The information of the time-frequency resource for transmitting the second indication information, the radio network temporary identifier C-RNTI of the user equipment in the second base station, and the user equipment belongs to the second base station Identification information of the second user equipment group.

Before receiving the at least one of the first indication information sent by the first base station and the second indication information sent by the second base station, receiving, by the first base station, sixth indication information, where the sixth indication information includes the following information At least one of: the identification information of the first base station, the identification information of the sixth carrier, and the carrier type information of the sixth carrier, where the first base station sends the second indication information on the sixth carrier, where The carrier type of the six carriers is an authorized carrier or an unlicensed carrier;

And detecting, according to the sixth indication information, the first indication information sent by the first base station.

In another optional embodiment, the sending unit is further configured to: before the receiving unit 510 receives at least one of the first indication information sent by the first base station and the second indication information sent by the second base station, A base station sends an RRM measurement result, so that the first base station determines the user equipment as a target user equipment for detecting a resource conflict according to the RRM measurement result.

The user equipment 500 according to an embodiment of the present invention may correspond to a user equipment or a first user equipment in a communication method according to an embodiment of the present invention, and the above-described and other operations and/or functions of respective modules in the user equipment 500 are respectively implemented The corresponding processes of the respective methods in FIG. 5 to FIG. 8 are not described herein again for the sake of brevity.

FIG. 10 shows a base station 600 according to an embodiment of the present invention. The base station 600 includes:

The resource competition unit 610 is configured to compete for time-frequency resources on the first unlicensed carrier, where the base station is configured with at least one authorized carrier and at least one unlicensed carrier including the first unlicensed carrier;

The sending unit 620 is configured to: if the resource contention unit 610 contends to the first time-frequency resource on the first unlicensed carrier, send the first indication information to the first user equipment, where the first indication information is used to indicate that the base station competes The first time-frequency resource arrived;

The receiving unit 630 is configured to receive resource conflict indication information that is sent by the first user equipment according to the first indication information sent by the sending unit 620, where the resource conflict indication information is used to indicate that a resource conflict exists;

The resource scheduling unit 640 is configured to schedule the first time-frequency resource according to the resource conflict indication information received by the receiving unit 630.

Therefore, the base station according to the embodiment of the present invention, by competing for the time-frequency resource on the first unlicensed carrier, and transmitting, to the first user equipment, the first time-frequency resource for indicating that the base station competes on the first unlicensed carrier. The first indication information, the resource conflict indication information sent by the first user equipment according to the first indication information, and the scheduling of the first time-frequency resource according to the resource conflict indication information, thereby facilitating avoidance of the base station and other base stations Mutual hidden nodes cause interference between the base station and other base stations, thereby improving system performance.

The resource conflict indication information may be specifically used to indicate that there is a resource conflict between the base station and the second base station, where the resource conflict between the base station and the second base station may refer to the first time-frequency resource and the second that the base station competes for. The second time-frequency resources that the base station competes for are overlapping, that is, partially or completely overlapping.

As an optional embodiment, the receiving unit 630 is specifically configured to:

Receiving, by the first user equipment, a resource conflict message sent according to the first indication information, where the resource conflict message carries the resource conflict indication information that occupies at least one bit; or

As another optional embodiment, the resource conflict indication information is further used to indicate a time-frequency resource in which the resource conflict exists in the first time-frequency resource.

As another optional embodiment, the base station 600 further includes:

a first determining unit, configured to determine, from the at least one user equipment included in the first user equipment group, the feedback, before the receiving unit 630 receives the resource conflict indication information that is sent by the first user equipment according to the first indication information The target user equipment of the resource conflict indication information, wherein the first user equipment belongs to the first user equipment group.

At this time, the sending unit 620 is further configured to send the third indication information to the at least one user equipment, where the third indication information is used to indicate the target user equipment determined by the first determining unit;

Correspondingly, the receiving unit 630 is further configured to receive, according to the third indication information sent by the sending unit 620, that the target user equipment is the first user equipment, and send the information according to the first indication information. The resource conflict indication information.

As another optional embodiment, the sending unit 620 is specifically configured to send to the first user equipment. The enhanced request sends an RTS message, and the enhanced RTS message carries the first indication information.

As an optional embodiment, the enhanced RTS message carries at least one of the following information: identifier information of the base station, identifier information of the first cell controlled by the base station, and a number of the first user equipment that belongs to the base station. Identification information of a user equipment group, where the first cell is a serving cell of the first user equipment.

As another optional embodiment, the receiving unit 630 is specifically configured to receive an enhanced clear sending CTS message sent by the first user equipment according to the first indication information, where the enhanced CTS message carries the resource conflict indication information.

As an optional embodiment, the sending unit 620 is specifically configured to send the enhanced RTS message to the first user equipment on the third unlicensed carrier.

Correspondingly, the receiving unit 630 is specifically configured to receive the enhanced CTS message that is sent by the first user equipment according to the enhanced RTS message sent by the sending unit 620 on the third time-frequency resource, where the third time-frequency resource is The first user equipment contends on the third unlicensed carrier.

As another optional embodiment, the sending unit 620 is further configured to: before the receiving unit 630 receives the resource conflict indication information sent by the first user equipment according to the first indication information, send a fourth indication to the first user equipment. Information, the fourth indication information is used to indicate that the base station allocates feedback resources for the first user equipment on the first authorized carrier, and the at least one authorized carrier configured by the first base station includes the first authorized carrier;

Correspondingly, the receiving unit 630 is specifically configured to receive the resource conflict indication information that is sent by the first user equipment on the feedback resource indicated by the fourth indication information that is sent by the sending unit 620.

As another optional embodiment, the fourth indication information is specifically used to indicate an uplink transmission opportunity of the first user equipment in each subframe of the first authorized carrier.

As another optional embodiment, the feedback resource is shared by a plurality of user equipments including the first user equipment, and the feedback resource includes a plurality of resource blocks. At this time, the receiving unit 630 is specifically configured to receive the resource conflict indication information that is sent by the first user equipment on the target resource block, where the target resource block is randomly selected by the first user equipment from the multiple resource blocks.

As another optional embodiment, the sending unit 620 is specifically configured to send the first indication information to the first user equipment on the second authorized carrier, where the at least one authorized carrier configured by the first base station includes the second authorized carrier .

As another optional embodiment, the sending unit 620 is further configured to: send to the first user equipment Before sending the first indication information, sending, to the first user equipment, fifth indication information, where the fifth indication information includes at least one of the following information: identifier information of the second base station, identifier information of the fifth carrier, and the fifth Information about the carrier type of the carrier, where the second base station sends the second indication information on the fifth carrier, where the second indication information is used to indicate that the second base station competes on the second unlicensed carrier. For the time-frequency resource, the carrier type of the fifth carrier is an authorized carrier or an unlicensed carrier.

As another optional embodiment, the sending unit 620 is further configured to: before sending the first indication information to the first user equipment, send, to the first user equipment, sixth indication information, where the sixth indication information includes the following information. At least one of the identifier information of the first base station, the identifier information of the sixth carrier, and the carrier type information of the sixth carrier, where the first base station sends the second indication information on the sixth carrier, where The carrier type of the sixth carrier is an authorized carrier or an unlicensed carrier.

As another optional embodiment, the receiving unit 630 is further configured to: before the sending unit 620 sends the first indication information to the first user equipment, receive the radio resource management RRM measurement result sent by the first user equipment;

Correspondingly, the base station 600 further includes: a second determining unit, configured to determine, according to the RRM measurement result received by the receiving unit 630, the first user equipment as a target user equipment for detecting a resource conflict.

As another optional embodiment, the receiving unit 630 is further configured to: before the sending, by the sending unit 620, send the fifth indication information to the first user equipment, by receiving a backhaul link with the second base station, Configuration information sent by the second base station, where the configuration information includes information about the fifth carrier;

Correspondingly, the base station 600 further includes: a generating unit, configured to generate the fifth indication information according to the configuration information received by the receiving unit 630.

At this time, the sending unit 620 is specifically configured to send the fifth indication information generated by the generating unit to the first user equipment.

In another optional embodiment, the first indication information is further used to indicate a feedback reference value, so that the first user equipment determines whether to use the difference between the feedback reference value and the random value generated by the first user equipment. The base station sends the resource conflict indication information.

The base station 600 according to an embodiment of the present invention may correspond to a first base station in a communication method according to an embodiment of the present invention, and the above-described and other operations and/or functions of respective modules in the base station 600 are respectively implemented in FIG. 5 to FIG. The corresponding processes of the various methods are not repeated here for the sake of brevity.

FIG. 11 shows a user equipment 700 according to an embodiment of the present invention. The user equipment 700 includes:

The receiver 710 is configured to receive at least one of the first indication information sent by the first base station and the second indication information sent by the second base station, where the first indication information is used to indicate that the first base station is in the first unlicensed carrier. a first time-frequency resource that is contending, the second indication information is used to indicate a second time-frequency resource that the second base station contends on the second unlicensed carrier, where the first base station is configured with at least one authorized carrier And at least one unlicensed carrier including the first unlicensed carrier, the second base station configured with at least one unlicensed carrier including the second unlicensed carrier;

The processor 720 is configured to determine, according to at least one of the first indication information and the second indication information that is received by the receiver 710, whether the first base station and the second base station have a resource conflict.

Optionally, the processor 720 is specifically configured to:

If the receiver 710 receives the first indication information and the second indication information, according to the first Determining, by the indication information, the second indication information, whether the first time-frequency resource and the second time-frequency resource overlap;

As another optional embodiment, the user equipment 700 further includes:

The transmitter is configured to: if the processor 720 determines that the first base station and the second base station have a resource conflict, send the resource conflict indication information to the first base station, where the resource conflict indication information is used to indicate that a resource conflict exists.

As another alternative embodiment, the transmitter is specifically configured to:

A resource collision energy signal is transmitted to the first base station.

As another optional embodiment, the processor 720 is configured to generate a random number before the transmitter sends the resource conflict indication information to the first base station;

Correspondingly, the transmitter is specifically configured to send the resource conflict indication information to the first base station if the random number generated by the processor satisfies a feedback trigger condition of the resource conflict indication information.

The random number is within a first range of values;

As another optional embodiment, the processor 720 is further configured to perform radio resource management RRM measurement on the reference signal sent by the first base station to obtain the RRM before the transmitter sends the resource conflict indication information to the first base station. Measurement result

Correspondingly, the transmitter is specifically configured to send the resource conflict indication information to the first base station if the RRM measurement result obtained by the processor 720 is lower than a first threshold.

As another optional embodiment, the receiver 710 is further configured to: at the transmitter to the first base Receiving, by the first base station, the third indication information that is sent by the first base station, where the third indication information is used to indicate a target user equipment used for feeding back a resource conflict in the first user equipment group, where the first user The device grouping includes the user equipment;

Correspondingly, the transmitter is specifically configured to send the resource conflict indication information to the first base station if the target user equipment indicated by the third indication information received by the receiver 710 is the user equipment.

As another optional embodiment, the receiver 710 is specifically configured to: receive at least one of a first enhanced request sending RTS message sent by the first base station and a second enhanced RTS message sent by the second base station, where the An enhanced RTS message carries the first indication information, where the second enhanced RTS message carries the second indication information;

As another optional embodiment, the transmitter is specifically configured to send an enhanced clear sending CTS message to the first base station, where the enhanced CTS message carries the resource conflict indication information.

As another optional embodiment, the receiver 710 is specifically configured to receive the first RTS message sent by the first base station on a third unlicensed carrier and the second base station send the fourth unlicensed carrier Two RTS messages;

The processor 720 is further configured to compete for time-frequency resources on the third unlicensed carrier;

The transmitter is further configured to: if the processor 720 contends to the third time-frequency resource on the third unlicensed carrier, send the enhanced CTS message to the first base station on the third time-frequency resource.

As another alternative embodiment, the receiver 710 is further configured to:

Receiving, by the first base station, the fourth indication information that is sent by the first base station, where the fourth indication information is used by the first base station to indicate that the first base station is the user equipment on the first authorized carrier. The allocated feedback resource, the at least one authorized carrier configured by the first base station includes the first authorized carrier;

Correspondingly, the transmitter is specifically configured to: send the resource conflict indication information to the first base station by using the feedback resource indicated by the fourth indication information received by the receiver 710.

As another alternative embodiment, the feedback resource is shared by a plurality of user devices, and the feedback resource includes a plurality of resource blocks. At this point, the sender includes:

Correspondingly, the receiver 710 is specifically configured to receive at least one of first indication information sent by the first base station on the second authorized carrier and the second indication information sent by the second base station on the third authorized carrier. The at least one authorized carrier configured by the first base station includes the second authorized carrier, and the at least one authorized carrier configured by the second base station includes the third authorized carrier.

Optionally, the receiver 710 is configured to receive at least one of the first indication information and the second indication information by detecting a downlink control channel of the second authorized carrier and detecting a downlink control channel of the third authorized carrier. .

As another alternative embodiment, the receiver 710 is further configured to:

In another optional embodiment, the transmitter is further configured to send the RRM measurement result to the first base station before the receiver 710 receives the at least one of the first indication information and the second indication information, so as to facilitate The first base station determines the user equipment as a target user equipment for detecting a resource conflict according to the RRM measurement result.

The user equipment 700 according to an embodiment of the present invention may correspond to a user equipment or a first user equipment in a communication method according to an embodiment of the present invention, and the above-described and other operations and/or functions of respective modules in the user equipment 700 are respectively implemented for The corresponding processes of the respective methods in FIG. 5 to FIG. 8 are not described herein again for the sake of brevity.

FIG. 12 shows a base station 800 provided by an embodiment of the present invention. The base station 800 includes:

The processor 810 is configured to compete for time-frequency resources on the first unlicensed carrier, where the base station is configured with at least one authorized carrier and at least one unlicensed carrier including the first unlicensed carrier;

The transmitter 820 is configured to send the first indication information to the first user equipment if the processor 810 contends to the first time-frequency resource on the first unlicensed carrier, where the first indication information is used to indicate that the base station competes The first time-frequency resource;

The receiver 830 is configured to receive resource conflict indication information that is sent by the first user equipment according to the first indication information sent by the sender 820, where the resource conflict indication information is used to indicate that a resource conflict exists;

The processor 810 is further configured to: according to the resource conflict indication information received by the receiver 830, The first time-frequency resource is scheduled.

As an optional embodiment, the receiver 830 is specifically configured to:

As another optional embodiment, the processor 810 is further configured to: at least one included in the first user equipment group before the receiver 830 receives the resource conflict indication information sent by the first user equipment according to the first indication information. And determining, by the user equipment, the target user equipment for feeding back the resource conflict indication information, where the first user equipment belongs to the first user equipment group.

At this time, the transmitter 820 is further configured to send the third indication information to the at least one user equipment, where the third indication information is used to indicate the target user equipment determined by the processor 810;

Correspondingly, the receiver 830 is further configured to receive, according to the third indication information sent by the sender 820, that the target user equipment is the first user equipment, and send the information according to the first indication information. The resource conflict indication information.

As another optional embodiment, the transmitter 820 is specifically configured to send an enhanced request sending RTS message to the first user equipment, where the enhanced RTS message carries the first indication information.

As an optional embodiment, the enhanced RTS message carries at least one of the following information: The identifier information of the base station, the identifier information of the first cell controlled by the base station, and the identifier information of the first user equipment group to which the first user equipment belongs in the base station, where the first cell is the first user equipment Service area.

As another optional embodiment, the receiver 830 is specifically configured to receive an enhanced clear sending CTS message sent by the first user equipment according to the first indication information, where the enhanced CTS message carries the resource conflict indication information.

As an optional embodiment, the transmitter 820 is specifically configured to send the enhanced RTS message to the first user equipment on the third unlicensed carrier.

Correspondingly, the receiver 830 is specifically configured to receive the enhanced CTS message that is sent by the first user equipment on the third time-frequency resource according to the enhanced RTS message sent by the sender 820, where the third time-frequency resource is The first user equipment contends on the third unlicensed carrier.

As another optional embodiment, the transmitter 820 is further configured to: before the receiver 830 receives the resource conflict indication information sent by the first user equipment according to the first indication information, send a fourth indication to the first user equipment. Information, the fourth indication information is used to indicate that the base station allocates feedback resources for the first user equipment on the first authorized carrier, and the at least one authorized carrier configured by the first base station includes the first authorized carrier;

Correspondingly, the receiver 830 is specifically configured to receive the resource conflict indication information that is sent by the first user equipment on the feedback resource indicated by the fourth indication information that is sent by the sender 820.

As another optional embodiment, the feedback resource is shared by a plurality of user equipments including the first user equipment, and the feedback resource includes a plurality of resource blocks. At this time, the receiver 830 is specifically configured to receive the resource conflict indication information that is sent by the first user equipment on the target resource block, where the target resource block is randomly selected by the first user equipment from the multiple resource blocks.

As another optional embodiment, the transmitter 820 is specifically configured to send the first indication information to the first user equipment on the second authorized carrier, where the at least one authorized carrier configured by the first base station includes the second authorized carrier .

As another optional embodiment, the transmitter 820 is further configured to: before sending the first indication information to the first user equipment, send, to the first user equipment, fifth indication information, where the fifth indication information includes the following information. At least one of: identification information of the second base station, identification information of the fifth carrier, and information of a carrier type of the fifth carrier, wherein the second base station sends the first carrier on the fifth carrier The second indication information is used to indicate the second time-frequency resource that the second base station contends on the second unlicensed carrier, and the carrier type of the fifth carrier is an authorized carrier or an unlicensed carrier.

As another optional embodiment, the transmitter 820 is further configured to: before sending the first indication information to the first user equipment, send, to the first user equipment, sixth indication information, where the sixth indication information includes the following information. At least one of the identifier information of the first base station, the identifier information of the sixth carrier, and the carrier type information of the sixth carrier, where the first base station sends the second indication information on the sixth carrier, where The carrier type of the sixth carrier is an authorized carrier or an unlicensed carrier.

As another optional embodiment, the receiver 830 is further configured to: before the sending, by the transmitter 820, the first user information, send the radio resource management RRM measurement result sent by the first user equipment;

Correspondingly, the processor 810 is further configured to determine, according to the RRM measurement result received by the receiver 830, the first user equipment as a target user equipment for detecting a resource conflict.

As another optional embodiment, the receiver 830 is further configured to: receive, after the transmitter 820 sends the fifth indication information to the first user equipment, by using a backhaul link with the second base station. Configuration information sent by the second base station, where the configuration information includes information about the fifth carrier;

Correspondingly, the processor 810 is further configured to generate the fifth indication information according to the configuration information received by the receiver 830.

At this time, the transmitter 820 is specifically configured to send the fifth indication information generated by the processor 810 to the first user equipment.

The base station 800 according to an embodiment of the present invention may correspond to a first base station in a communication method according to an embodiment of the present invention, and the above and other operations and/or functions of respective modules in the base station 800 are respectively implemented in FIG. 5 to FIG. The corresponding processes of the various methods are not repeated here for the sake of brevity.

Therefore, the base station according to an embodiment of the present invention spends time by competing on the first unlicensed carrier. And sending, to the first user equipment, first indication information, which is used by the first user equipment to indicate the first time-frequency resource that the base station contends on the first unlicensed carrier, and receives the resource that is sent by the first user equipment according to the first indication information. The conflict indication information, and scheduling the first time-frequency resource according to the resource conflict indication information, is beneficial to avoid interference between the base station and other base stations due to the hidden nodes of the base station and other base stations, thereby improving system performance.

It should be understood that in the embodiments of the present invention, the term and/or merely an association relationship describing the associated object indicates that there may be three relationships. For example, A and/or B may indicate that A exists separately, and A and B exist simultaneously, and B cases exist alone. In addition, the character / in this paper generally indicates that the contextual object is an OR relationship.

Those skilled in the art will appreciate that the various method steps and elements described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, in order to clearly illustrate hardware and software. Interchangeability, the steps and composition of the various embodiments have been generally described in terms of function in the foregoing description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. Different methods may be used to implement the described functionality 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, or an electrical, mechanical or other form of connection.

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 objectives of the embodiments of the present invention.

In addition, each functional unit in various embodiments of the present invention may be integrated in one processing unit In addition, each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention contributes in essence or to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) 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, which can store program codes. .

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any equivalent person can be easily conceived within the technical scope of the present invention by any person skilled in the art. Modifications or substitutions are intended to be included within the scope of the invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

A communication method, comprising:

The user equipment receives at least one of the first indication information sent by the first base station and the second indication information sent by the second base station, where the first indication information is used to indicate that the first base station competes on the first unlicensed carrier. a first time-frequency resource, the second indication information is used to indicate a second time-frequency resource that the second base station contends on the second unlicensed carrier, where the first base station is configured with at least one authorization a carrier and at least one unlicensed carrier including the first unlicensed carrier, the second base station configured with at least one unlicensed carrier including the second unlicensed carrier;

And determining, according to at least one of the received first indication information and the second indication information, whether the first base station and the second base station have a resource conflict.
The method according to claim 1, wherein the determining the first base station and the second base station according to at least one of the received first indication information and the second indication information Whether there are resource conflicts, including:

And determining, according to the first indication information and the second indication information, whether the first time-frequency resource and the second time-frequency resource overlap according to the first indication information and the second indication information ;

If the first time-frequency resource and the second time-frequency resource overlap, it is determined that the first base station and the second base station have resource conflicts.
The method according to claim 1 or 2, wherein the method further comprises:

If it is determined that the first base station and the second base station have a resource conflict, the resource conflict indication information is sent to the first base station, where the resource conflict indication information is used to indicate that a resource conflict exists.
The method according to claim 3, wherein the sending the resource conflict indication information to the first base station comprises:

Sending a resource conflict feedback message to the first base station, where the resource conflict feedback message carries the resource conflict indication information that occupies at least one bit; or

Transmitting a resource collision energy signal to the first base station.
The method according to claim 3 or 4, wherein the resource conflict indication information is further used to indicate time-frequency resources in which the first base station and the second base station overlap.
The method according to any one of claims 3 to 5, wherein before the sending the resource conflict indication information to the first base station, the method further includes:

Generate a random number;

The sending the resource conflict indication information to the first base station includes:

And if the random number satisfies the feedback trigger condition of the resource conflict indication information, sending the resource conflict indication information to the first base station.
The method according to claim 6, wherein the feedback triggering condition of the resource conflict indication information comprises at least one of the following:

The random number is within a first range of values;

The difference between the random number and the feedback reference value is in a second value range, wherein the feedback reference value is configured by the first base station.
The method according to any one of claims 3 to 7, wherein before the sending the resource conflict indication information to the first base station, the method further includes:

Performing radio resource management RRM measurement on the reference signal sent by the first base station to obtain an RRM measurement result;

The sending the resource conflict indication information to the first base station includes:

And if the RRM measurement result is lower than the first threshold, sending the resource conflict indication information to the first base station.
The method according to any one of claims 3 to 8, wherein before the sending the resource conflict indication information to the first base station, the method further includes:

And receiving the third indication information that is sent by the first base station, where the third indication information is used to indicate a target user equipment used to feed back a resource conflict in the first user equipment group, where the first user equipment group includes the User equipment

The sending the resource conflict indication information to the first base station includes:

And if the target user equipment indicated by the third indication information is the user equipment, sending the resource conflict indication information to the first base station.
The method according to any one of claims 3 to 9, wherein the receiving at least one of the first indication information sent by the first base station and the second indication information sent by the second base station comprises:

Receiving at least one of a first enhanced request sending RTS message sent by the first base station and a second enhanced RTS message sent by the second base station, where the first enhanced RTS message carries the first indication information, where The second enhanced RTS message carries the second indication information;

The sending a resource conflict feedback message to the first base station includes:

Sending an enhanced clear sending CTS message to the first base station, where the enhanced CTS message carries The resource conflict indication information.
The method according to claim 10, wherein the first enhanced RTS message carries at least one of the following information: identification information of the first base station, and first cell controlled by the first base station Identification information and identification information of the first user equipment group to which the user equipment belongs in the first base station, where the first cell is a serving cell of the user equipment.
The method according to claim 10 or 11, wherein the receiving the at least one of the first indication information sent by the first base station and the second indication information sent by the second base station comprises:

Receiving, by the first base station, the first RTS message sent on a third unlicensed carrier and the second RTS message sent by the second base station on a fourth unlicensed carrier;

The sending the enhanced CTS message to the first base station includes:

Competing for time-frequency resources on the third unlicensed carrier;

And if the third time-frequency resource is contending on the third unlicensed carrier, sending the enhanced CTS message to the first base station on the third time-frequency resource.
The method according to any one of claims 3 to 11, wherein before the sending the resource conflict indication information to the first base station, the method further includes:

Receiving fourth indication information that is sent by the first base station, where the fourth indication information is used to indicate a feedback resource that is allocated by the first base station to the user equipment on a first authorized carrier, where the first base station is configured At least one authorized carrier includes the first authorized carrier;

The sending the resource conflict indication information to the first base station includes:

And using the feedback resource to send the resource conflict indication information to the first base station.
The method according to claim 13, wherein the fourth indication information is specifically used to indicate an uplink transmission opportunity of the user equipment in each subframe of the first authorized carrier.
The method according to claim 13 or 14, wherein the feedback resource is shared by a plurality of user equipments, and the feedback resource comprises a plurality of resource blocks;

And the sending, by using the feedback resource, the resource conflict indication information to the first base station, including:

Selecting a target resource block randomly from the plurality of resource blocks;

And using the target resource block, sending the resource conflict indication information to the first base station.
The method according to any one of claims 1 to 15, wherein said The second base station is further configured with at least one authorized carrier;

Receiving at least one of the first indication information sent by the first base station and the second indication information sent by the second base station, including:

Receiving at least one of first indication information sent by the first base station on the second authorized carrier and the second indication information sent by the second base station on the third authorized carrier, where the first The at least one authorized carrier configured by the base station includes the second authorized carrier, and the at least one authorized carrier configured by the second base station includes the third authorized carrier.
The method according to claim 16, wherein the receiving the first indication information sent by the first base station on a second authorized carrier and the transmitting the second base station on a third authorized carrier At least one of the two indications includes:

And receiving at least one of the first indication information and the second indication information by detecting a downlink control channel of the second authorized carrier and detecting a downlink control channel of the third authorized carrier.
The method of claim 17, wherein the downlink control channel comprises at least one of the following: a physical downlink control channel and a physical broadcast channel.
The method according to any one of claims 1 to 18, wherein before the receiving at least one of the first indication information sent by the first base station and the second indication information sent by the second base station, The method also includes:

Receiving, by the first base station, fifth indication information, where the fifth indication information includes at least one of the following information: identifier information of the second base station, identifier information of a fifth carrier, and the fifth carrier a carrier type information, where the second base station sends the second indication information on the fifth carrier, where a carrier type of the fifth carrier is an authorized carrier or an unlicensed carrier;

Receiving at least one of the first indication information sent by the first base station and the second indication information sent by the second base station, including:

And detecting, according to the fifth indication information, the second indication information sent by the second base station.
The method according to claim 19, wherein if the carrier type of the fifth carrier is an authorized carrier, the fifth indication information further includes at least one of the following information: downlink control of the fifth carrier The resource configuration information of the channel, the information about the time-frequency resource configured to send the second indication information, and the radio network temporary identifier C-RNTI of the user equipment in the second base station And identifier information of the second user equipment group to which the user equipment belongs in the second base station.
The method according to any one of claims 1 to 20, wherein before receiving the at least one of the first indication information sent by the first base station and the second indication information sent by the second base station, The method also includes:

Receiving, by the first base station, sixth indication information, where the sixth indication information includes at least one of the following information: identifier information of the first base station, identifier information of a sixth carrier, and the sixth carrier a carrier type information, where the first base station sends the second indication information on the sixth carrier, and the carrier type of the sixth carrier is an authorized carrier or an unlicensed carrier;

Receiving at least one of the first indication information sent by the first base station and the second indication information sent by the second base station, including:

And detecting, according to the sixth indication information, the first indication information sent by the first base station.
The method according to any one of claims 1 to 21, wherein before the receiving at least one of the first indication information sent by the first base station and the second indication information sent by the second base station, The method also includes:

And transmitting, by the first base station, the RRM measurement result, so that the first base station determines the user equipment as a target user equipment for detecting a resource conflict according to the RRM measurement result.
A communication method, comprising:

The first base station contends for a time-frequency resource on the first unlicensed carrier, wherein the first base station is configured with at least one authorized carrier and at least one unlicensed carrier including the first unlicensed carrier;

If the first time-frequency resource is contending on the first unlicensed carrier, the first indication information is sent to the first user equipment, where the first indication information is used to indicate that the first base station competes with the first Time-frequency resources;

And receiving the resource conflict indication information that is sent by the first user equipment according to the first indication information, where the resource conflict indication information is used to indicate that a resource conflict exists;

And scheduling the first time-frequency resource according to the resource conflict indication information.
The method according to claim 23, wherein the receiving the resource conflict indication information that is sent by the first user equipment according to the first indication information comprises:

Receiving a resource conflict feedback message sent by the first user equipment according to the first indication information, where the resource conflict feedback message carries the resource conflict indication information that occupies at least one bit; or

Receiving a resource conflict energy signal sent by the first user equipment according to the first indication information.
The method according to claim 23 or 24, wherein the resource conflict indication information is further used to indicate a time-frequency resource in which the resource conflict exists in the first time-frequency resource.
The method according to any one of claims 23 to 25, wherein the resource conflict indication information is specifically used to indicate that the first time-frequency resource and the second base station compete on the second unlicensed carrier. The second time-frequency resource overlaps, wherein the second base station is configured with at least one unlicensed carrier including the second unlicensed carrier.
The method according to any one of claims 23 to 26, wherein before the receiving the resource conflict indication information that is sent by the first user equipment according to the first indication information, the method further includes:

Determining, by the at least one user equipment included in the first user equipment group, a target user equipment for feeding back resource conflict indication information, where the first user equipment belongs to the first user equipment group;

Sending, to the at least one user equipment, third indication information, where the third indication information is used to indicate the target user equipment;

The receiving the resource conflict indication information that is sent by the first user equipment according to the first indication information includes:

Receiving, by the first user equipment, the resource conflict indication information that is sent according to the first indication information when determining that the target user equipment is the first user equipment.
The method according to any one of claims 23 to 27, wherein the sending the first indication information to the first user equipment comprises:

Sending an enhanced request to send an RTS message to the first user equipment, where the enhanced RTS message carries the first indication information;

The receiving the resource conflict indication information that is sent by the first user equipment according to the first indication information includes:

Receiving, by the first user equipment, an enhanced clear sending CTS message sent according to the first indication information, where the enhanced CTS message carries the resource conflict indication information.
The method according to claim 28, wherein the enhanced RTS message carries at least one of the following information: identifier information of the first base station, and identifier information of a first cell controlled by the first base station And identifier information of the first user equipment group that the first user equipment belongs to in the first base station, where the first cell is a serving cell of the first user equipment.
The method according to claim 28 or 29, wherein the sending the enhanced RTS message to the first user equipment comprises:

Transmitting the enhanced RTS message to the first user equipment on a third unlicensed carrier;

The receiving the enhanced CTS message that is sent by the first user equipment according to the first indication information includes:

Receiving, by the first user equipment, the enhanced CTS message that is sent on the third time-frequency resource according to the enhanced RTS message, where the third time-frequency resource is that the first user equipment is in the third non- Authorized on the carrier.
The method according to any one of claims 23 to 29, wherein before the receiving the resource conflict indication information that is sent by the first user equipment according to the first indication information, the method further includes:

Transmitting, to the first user equipment, fourth indication information, where the fourth indication information is used to indicate, by the first base station, a feedback resource allocated by the first base station to the first user equipment, where the first base station The configured at least one authorized carrier includes the first authorized carrier;

The receiving the resource conflict indication information that is sent by the first user equipment according to the first indication information includes:

Receiving, by the first user equipment, the resource conflict indication information sent by the feedback resource.
The method according to claim 31, wherein the fourth indication information is specifically used to indicate an uplink transmission opportunity of the first user equipment in each subframe of the first authorized carrier.
The method according to claim 31 or 32, wherein the feedback resource is shared by a plurality of user equipments including the first user equipment, and the feedback resource comprises a plurality of resource blocks;

And the receiving, by the first user equipment, the resource conflict indication information that is sent by the first user equipment according to the first indication information, including:

Receiving, by the first user equipment, the resource conflict indication information that is sent by the first user equipment, where the target resource block is randomly selected by the first user equipment from the multiple resource blocks.
The method according to any one of claims 23 to 33, wherein the sending the first indication information to the first user equipment comprises:

Sending the first indication information to the first user equipment on the second authorized carrier, where the At least one authorized carrier configured by a base station includes the second authorized carrier.
The method according to any one of claims 23 to 34, wherein before the sending the first indication information to the first user equipment, the method further comprises:

Sending, to the first user equipment, fifth indication information, where the fifth indication information includes at least one of the following information: identifier information of the second base station, identifier information of the fifth carrier, and a carrier type of the fifth carrier The second base station sends the second indication information on the fifth carrier, where the second indication information is used to indicate that the second base station competes on the second unlicensed carrier. The second time frequency resource, the carrier type of the fifth carrier is an authorized carrier or an unlicensed carrier.
The method according to claim 35, wherein if the carrier type of the fifth carrier is an authorized carrier, the fifth indication information further includes at least one of the following information: downlink control of the fifth carrier The resource configuration information of the channel, the information about the time-frequency resource configured to send the second indication information, and the wireless network temporary identifier C of the first user equipment in the second base station - RNTI and identification information of the second user equipment group to which the first user equipment belongs in the second base station.
The method according to claim 35 or claim 36, wherein before the sending the fifth indication information to the first user equipment, the method further comprises:

Receiving configuration information sent by the second base station by using a backhaul link with the second base station, where the configuration information includes information about the fifth carrier;

And generating the fifth indication information according to the configuration information.
The method according to any one of claims 23 to 37, wherein before the sending the first indication information to the first user equipment, the method further comprises:

Transmitting, to the first base station, sixth indication information, where the sixth indication information includes at least one of the following information: identifier information of the first base station, identifier information of a sixth carrier, and a carrier of the sixth carrier The type of information, where the first base station sends the second indication information on the sixth carrier, and the carrier type of the sixth carrier is an authorized carrier or an unlicensed carrier.
The method according to any one of claims 23 to 38, wherein before the sending the first indication information to the first user equipment, the method further comprises:

Receiving a radio resource management RRM measurement result sent by the first user equipment;

Determining, according to the RRM measurement result, the first user equipment as a target user equipment for detecting a resource conflict.
The method according to any one of claims 23 to 39, wherein said An indication information is further used to indicate a feedback reference value, so that the first user equipment determines whether to send the identifier to the first base station according to a difference between the feedback reference value and a random value generated by the first user equipment. Resource conflict indication information.
A user equipment, comprising:

a receiving unit, configured to receive at least one of first indication information sent by the first base station and second indication information sent by the second base station, where the first indication information is used to indicate that the first base station is in the first unauthorized a first time-frequency resource that is contending on the carrier, where the second indication information is used to indicate a second time-frequency resource that the second base station contends on the second unlicensed carrier, where the first base station is configured with At least one authorized carrier and at least one unlicensed carrier including the first unlicensed carrier, the second base station configured with at least one unlicensed carrier including the second unlicensed carrier;

a determining unit, configured to determine, according to at least one of the first indication information and the second indication information that is received by the receiving unit, whether the first base station and the second base station have a resource conflict.
The user equipment according to claim 41, wherein the determining unit is specifically configured to:

And if the receiving unit receives the first indication information and the second indication information, determining, according to the first indication information and the second indication information, the first time-frequency resource and the second time Whether the frequency resources overlap;

If the first time-frequency resource and the second time-frequency resource overlap, it is determined that the first base station and the second base station have resource conflicts.
The user equipment according to claim 41 or 42, further comprising:

a sending unit, configured to: if the determining unit determines that the first base station and the second base station have a resource conflict, send resource conflict indication information to the first base station, where the resource conflict indication information is used to indicate that a resource conflict exists .
The user equipment according to claim 43, wherein the sending unit is specifically configured to:

Sending a resource conflict feedback message to the first base station, where the resource conflict feedback message carries the resource conflict indication information that occupies at least one bit; or

Transmitting a resource collision energy signal to the first base station.
The user equipment according to claim 43 or 44, wherein the resource conflict indication information is further used to indicate time-frequency resources in which the first base station and the second base station overlap.
The user equipment according to any one of claims 43 to 45, further comprising:

a generating unit, configured to generate a random number before the sending unit sends the resource conflict indication information to the first base station;

The sending unit is specifically configured to send the resource conflict indication information to the first base station if the random number generated by the generating unit satisfies a feedback trigger condition of the resource conflict indication information.
The user equipment according to claim 46, wherein the feedback triggering condition of the resource conflict indication information comprises at least one of the following:

The random number is within a first range of values;

The difference between the random number and the feedback reference value is in a second value range, wherein the feedback reference value is configured by the first base station.
The user equipment according to any one of claims 43 to 47, further comprising:

a measuring unit, configured to perform radio resource management RRM measurement on the reference signal sent by the first base station to obtain an RRM measurement result, before the sending unit sends the resource conflict indication information to the first base station;

The sending unit is specifically configured to send the resource conflict indication information to the first base station if the RRM measurement result obtained by the measurement unit is lower than a first threshold.
The user equipment according to any one of claims 43 to 48, wherein the receiving unit is further configured to:

Before the transmitting unit sends the resource conflict indication information to the first base station, receiving third indication information that is sent by the first base station, where the third indication information is used to indicate that the first user equipment group is used for feeding back resources. a conflicting target user equipment, wherein the first user equipment group includes the user equipment;

The sending unit is specifically configured to: if the target user equipment indicated by the third indication information received by the receiving unit is the user equipment, send the resource conflict indication information to the first base station.
The user equipment according to any one of claims 43 to 49, wherein the receiving unit is specifically configured to:

Receiving, by the first base station, a first enhanced request to send an RTS message and the second base station At least one of the second enhanced RTS message that is sent, the first enhanced RTS message carries the first indication information, and the second enhanced RTS message carries the second indication information;

The sending unit is specifically configured to send an enhanced clear sending CTS message to the first base station, where the enhanced CTS message carries the resource conflict indication information.
The user equipment according to claim 50, wherein the first enhanced RTS message carries at least one of the following information: identification information of the first base station, and a first cell controlled by the first base station And the identification information of the first user equipment group to which the user equipment belongs in the first base station, where the first cell is a serving cell of the user equipment.
The user equipment according to claim 50 or 51, wherein the receiving unit is specifically configured to receive the first RTS message and the second base station that are sent by the first base station on a third unlicensed carrier. The second RTS message sent on the fourth unlicensed carrier;

The sending unit includes:

a resource competition subunit, configured to compete for time-frequency resources on the third unlicensed carrier;

a first sending subunit, if the resource competing subunit contends for a third time-frequency resource on the third unlicensed carrier, sending the enhanced CTS to the first base station on the third time-frequency resource Message.
The user equipment according to any one of claims 43 to 51, wherein the receiving unit is further configured to:

Before the transmitting unit sends the resource conflict indication information to the first base station, receiving fourth indication information that is sent by the first base station, where the fourth indication information is used to indicate that the first base station is in the first authorized carrier a feedback resource allocated to the user equipment, where the at least one authorized carrier configured by the first base station includes the first authorized carrier;

The sending unit is specifically configured to:

And using the feedback resource indicated by the fourth indication information received by the receiving unit, sending the resource conflict indication information to the first base station.
The user equipment according to claim 53, wherein the fourth indication information is specifically used to indicate an uplink transmission opportunity of the user equipment in each subframe of the first authorized carrier.
The user equipment according to claim 53 or 54, wherein the feedback resource is shared by a plurality of user equipments, and the feedback resource comprises a plurality of resource blocks;

The sending unit includes:

Selecting a submodule for randomly selecting a target resource block from the plurality of resource blocks;

And a second sending submodule, configured to send the resource conflict indication information to the first base station by using the target resource block selected by the selecting submodule.
The user equipment according to any one of claims 41 to 55, wherein the second base station is further configured with at least one authorized carrier;

The receiving unit is specifically configured to receive at least one of first indication information sent by the first base station on the second authorized carrier and the second indication information sent by the second base station on the third authorized carrier. The at least one authorized carrier configured by the first base station includes the second authorized carrier, and the at least one authorized carrier configured by the second base station includes the third authorized carrier.
The user equipment according to claim 56, wherein the receiving unit is configured to receive the first control channel by detecting a downlink control channel of the second authorized carrier and detecting a downlink control channel of the third authorized carrier. At least one of an indication information and the second indication information.
The user equipment according to claim 57, wherein the downlink control channel comprises at least one of the following: a physical downlink control channel and a physical broadcast channel.
The user equipment according to any one of claims 43 to 60, wherein the receiving unit is further configured to:

Receiving, by the first base station, fifth indication information, where the fifth indication information includes the following information, before receiving at least one of the first indication information sent by the first base station and the second indication information sent by the second base station At least one of: the identification information of the second base station, the identification information of the fifth carrier, and the carrier type information of the fifth carrier, where the second base station sends the information on the fifth carrier a second indication information, the carrier type of the fifth carrier is an authorized carrier or an unlicensed carrier;

And detecting, according to the fifth indication information, the second indication information sent by the second base station.
The user equipment according to claim 59, wherein if the carrier type of the fifth carrier is an authorized carrier, the fifth indication information further includes at least one of the following information: a downlink of the fifth carrier The resource configuration information of the control channel, the information about the time-frequency resource configured to send the second indication information configured on the fifth carrier, and the wireless network temporary identifier C- of the user equipment in the second base station Identification information of the RNTI and the second user equipment group to which the user equipment belongs in the second base station.
The user equipment according to any one of claims 41 to 60, wherein the receiving unit is further configured to:

Receiving the sixth indication information sent by the first base station, where the sixth indication information includes the following information, before receiving the at least one of the first indication information sent by the first base station and the second indication information sent by the second base station At least one of the identification information of the first base station, the identification information of the sixth carrier, and the carrier type information of the sixth carrier, where the first base station sends the information on the sixth carrier a second indication information, where the carrier type of the sixth carrier is an authorized carrier or an unlicensed carrier;

And detecting, according to the sixth indication information, the first indication information sent by the first base station.
The user equipment according to any one of claims 41 to 61, wherein the transmitting unit is further configured to:

Before the receiving unit receives at least one of the first indication information sent by the first base station and the second indication information sent by the second base station, sending, by the first base station, an RRM measurement result, so as to facilitate the first base station. Determining, by the RRM measurement result, the user equipment as a target user equipment for detecting a resource conflict.
A base station, comprising:

a resource competition unit, configured to compete for time-frequency resources on the first unlicensed carrier, where the base station is configured with at least one authorized carrier and at least one unlicensed carrier including the first unlicensed carrier;

a sending unit, configured to send first indication information to the first user equipment, where the resource contention unit contends to the first time-frequency resource on the first unlicensed carrier, where the first indication information is used to indicate the The first time-frequency resource that the base station competes with;

a receiving unit, configured to receive resource conflict indication information that is sent by the first user equipment according to the first indication information that is sent by the sending unit, where the resource conflict indication information is used to indicate that a resource conflict exists;

And a resource scheduling unit, configured to schedule the first time-frequency resource according to the resource conflict indication information received by the receiving unit.
The base station according to claim 63, wherein the receiving unit is specifically configured to:

Receiving a resource conflict feedback message sent by the first user equipment according to the first indication information, where the resource conflict feedback message carries the resource conflict indication signal occupying at least one bit Interest; or

Receiving a resource conflict energy signal sent by the first user equipment according to the first indication information.
The base station according to claim 63 or claim 64, wherein the resource conflict indication information is further used to indicate a time-frequency resource in which the resource conflict exists in the first time-frequency resource.
The base station according to any one of claims 63 to 65, wherein the resource conflict indication information is specifically used to indicate that the first time-frequency resource and the second base station compete on the second unlicensed carrier. The second time-frequency resource overlaps, wherein the second base station is configured with at least one unlicensed carrier including the second unlicensed carrier.
The base station according to any one of claims 63 to 66, further comprising:

a first determining unit, configured to determine, from the at least one user equipment included in the first user equipment group, before the receiving unit receives the resource conflict indication information that is sent by the first user equipment according to the first indication information And a target user equipment that feeds back the resource conflict indication information, where the first user equipment belongs to the first user equipment group;

The sending unit is further configured to send the third indication information to the at least one user equipment, where the third indication information is used to indicate the target user equipment determined by the first determining unit;

The receiving unit is further configured to receive, according to the third indication information sent by the sending unit, that the target user equipment is the first user equipment, according to the first indication information The resource conflict indication information sent.
The base station according to any one of claims 63 to 67, wherein the sending unit is configured to send an enhanced request to send an RTS message to the first user equipment, where the enhanced RTS message carries the first indication information ;

The receiving unit is configured to receive an enhanced clear CTS message sent by the first user equipment according to the first indication information, where the enhanced CTS message carries the resource conflict indication information.
The base station according to claim 68, wherein the enhanced RTS message carries at least one of the following information: identification information of the base station, identification information of a first cell controlled by the base station, and the Identification information of a first user equipment group to which the user equipment belongs in the base station, where the first cell is a serving cell of the first user equipment.
The base station according to claim 68 or 69, wherein the sending unit is specifically configured to send the enhanced RTS message to the first user equipment on a third unlicensed carrier;

The receiving unit is configured to receive the enhanced CTS message that is sent by the first user equipment according to the enhanced RTS message sent by the sending unit on a third time-frequency resource, where the third time-frequency resource is And the first user equipment competes on the third unlicensed carrier.
The base station according to any one of claims 63 to 69, wherein the sending unit is further configured to receive, at the receiving unit, a resource conflict indication sent by the first user equipment according to the first indication information. Sending the fourth indication information to the first user equipment, where the fourth indication information is used to indicate the feedback resource allocated by the base station to the first user equipment on the first authorized carrier, the first At least one authorized carrier configured by the base station includes the first authorized carrier;

The receiving unit is specifically configured to receive the resource conflict indication information that is sent by the first user equipment on the feedback resource indicated by the fourth indication information that is sent by the sending unit.
The base station according to claim 71, wherein the fourth indication information is specifically used to indicate an uplink transmission opportunity of the first user equipment in each subframe of the first authorized carrier.
The base station according to claim 71 or 72, wherein the feedback resource is shared by a plurality of user equipments including the first user equipment, and the feedback resource comprises a plurality of resource blocks;

The receiving unit is specifically configured to receive the resource conflict indication information that is sent by the first user equipment on a target resource block, where the target resource block is randomly selected by the first user equipment from the multiple resource blocks. of.
The base station according to any one of claims 63 to 73, wherein the sending unit is configured to send the first indication information to the first user equipment on a second authorized carrier, where the At least one authorized carrier configured by a base station includes the second authorized carrier.
The base station according to any one of claims 63 to 74, wherein the transmitting unit is further configured to:

Before transmitting the first indication information to the first user equipment, sending, to the first user equipment, fifth indication information, where the fifth indication information includes at least one of the following information: identifier information of the second base station, and fifth And the second base station sends the second indication information on the fifth carrier, where the second indication information is used to indicate the A second time-frequency resource that the second base station contends on the second unlicensed carrier, where the carrier type of the fifth carrier is an authorized carrier or an unlicensed carrier.
The base station according to claim 75, wherein if the carrier type of the fifth carrier is an authorized carrier, the fifth indication information further includes at least one of the following information: downlink control of the fifth carrier The resource configuration information of the channel, the information about the time-frequency resource configured to send the second indication information, and the wireless network temporary identifier C of the first user equipment in the second base station - RNTI and identification information of the second user equipment group to which the first user equipment belongs in the second base station.
The base station according to claim 75 or 76, wherein the receiving unit is further configured to:

Receiving configuration information sent by the second base station by using a backhaul link with the second base station, where the sending unit sends the fifth indication information to the first user equipment, where the configuration information includes Information about the fifth carrier;

The base station further includes: a generating unit, configured to generate the fifth indication information according to the configuration information received by the receiving unit.
The base station according to any one of claims 63 to 77, wherein the transmitting unit is further configured to:

Before transmitting the first indication information to the first user equipment, sending, to the first user equipment, sixth indication information, where the sixth indication information includes at least one of the following information: identifier information of the first base station, The identifier information of the sixth carrier and the carrier type information of the sixth carrier, where the first base station sends the second indication information on the sixth carrier, and the carrier type of the sixth carrier is an authorization Carrier or unlicensed carrier.
The base station according to any one of claims 63 to 78, wherein the receiving unit is further configured to:

Receiving, by the sending unit, the radio resource management RRM measurement result sent by the first user equipment, before sending the first indication information to the first user equipment;

The base station further includes: a second determining unit, configured to determine, according to the RRM measurement result received by the receiving unit, the first user equipment as a target user equipment for detecting a resource conflict.
The base station according to any one of claims 63 to 79, wherein the first indication information is further used to indicate a feedback reference value, so that the first user equipment is configured according to the feedback reference value and the The difference of the random values generated by the first user equipment determines whether the resource conflict indication information is sent to the base station.