CN104703164A

CN104703164A - Method of acquiring synchronous references, method of transmitting synchronous information and equipment

Info

Publication number: CN104703164A
Application number: CN201310667013.XA
Authority: CN
Inventors: 陈文洪; 高秋彬; 赵锐; 彭莹
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2013-12-10
Filing date: 2013-12-10
Publication date: 2015-06-10
Anticipated expiration: 2033-12-10
Also published as: CN104703164B

Abstract

The invention discloses a method of acquiring synchronous references, a method of transmitting synchronous information and corresponding equipment. The method of acquiring synchronous references includes the steps: a terminal acquires synchronous information of neighbor cells or neighbor clusters, which at least contains synchronous condition of the neighbor cells or the neighbor clusters; the terminal acquires the synchronous references of the neighbor cells or the neighbor clusters or another terminal belonging to the neighbor cells or the neighbor clusters. The method provided by the embodiment allows easier processing.

Description

Method for acquiring synchronization reference, method and equipment for sending synchronization information

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method for acquiring a synchronization reference, and a method and an apparatus for sending synchronization information.

Background

Device-to-Device (D2D), a terminal direct technology, means that a terminal (i.e., a neighboring terminal) in a short distance can perform data transmission through a direct link without forwarding through a central node (i.e., a base station).

The Long Time Evolution (LTE) D2D technology refers to a D2D discovery and communication process controlled by an LTE network and operating on an LTE licensed frequency band. On one hand, the advantages of the D2D technology can be fully exerted, and meanwhile, the control of the LTE network can also overcome the problems of uncontrollable interference and the like existing in the traditional D2D technology. The introduction of the LTE D2D feature will advance the LTE Technology from pure wireless mobile cellular communication Technology towards Universal Connectivity Technology (Universal Connectivity Technology).

LTE D2D technology includes two aspects of D2D discovery and D2D communication, where D2D discovery refers to one D2D User Equipment (UE) discovering other D2D UEs in the vicinity; D2D communication refers to data transmission between D2D UEs. Whether D2D discovery or D2D communication is carried out, synchronization reference needs to be acquired for synchronization between D2 DUEs to detect a D2D discovery signal or a D2D communication signal of a counterpart. Meanwhile, the D2D UE transmitting the D2D discovery signal or the D2D communication signal also needs to use the synchronization reference.

Currently, the D2D UE determines a synchronization reference with other D2D UEs in the serving cell (or home cluster) according to the acquired synchronization reference of the serving cell (or home cluster).

Herein, in the network coverage, the UE camping cell is called a serving cell. The concept of clusters is defined outside the network coverage, similar to the concept of cells. The cluster is a logical area with a cluster head as a central node, and provides synchronization reference and/or control information for the UEs belonging to the cluster, wherein the UE sending the synchronization reference and/or control information is called a cluster head.

For D2D UEs of a neighboring cell (or a neighboring cluster), the D2D UE can only acquire the synchronization reference of the D2DUE of the neighboring cell (or the neighboring cluster) by blindly detecting the synchronization signal of the D2D UE or the neighboring cell (or the neighboring cluster). Without any synchronization information or resource information, the D2D UE needs to blindly detect all possible synchronization signals, which is a high processing complexity. The neighboring cells are also called neighboring cells, and the neighboring clusters are also called neighboring clusters.

The technical problem in the prior art is described above by taking only a scenario in which the D2D UE between neighboring cells acquires a synchronization reference as an example. It should be noted that the above problem also exists for other scenarios where the UE needs to acquire synchronization reference of neighboring cells.

Disclosure of Invention

The invention aims to provide a method for acquiring a synchronous reference, a method and equipment for sending synchronous information, and aims to solve the problem of high complexity in acquiring the synchronous reference in the prior art.

The purpose of the invention is realized by the following technical scheme:

a method of acquiring a synchronization reference, comprising:

a terminal acquires synchronization information of a neighboring cell or a neighboring cluster, wherein the synchronization information at least comprises synchronization conditions of the neighboring cell or the neighboring cluster;

the terminal acquires the synchronization reference of the adjacent cell or the adjacent cluster according to the synchronization information; or the terminal acquires the synchronization reference of the terminal belonging to the adjacent cell or the adjacent cluster according to the synchronization information.

The synchronization condition of the neighboring cell (or the neighboring cluster) specifically includes: synchronization situation between a neighboring cell (or neighboring cluster) and a reference synchronization source. For the adjacent cells, the synchronization condition can be whether the adjacent cells are synchronized with the service cell of the terminal or not, or whether the adjacent cells are synchronized with other adjacent cells or not, or whether the adjacent cells are synchronized with a synchronization source such as a Global Positioning System (GPS) or not; for the adjacent cluster, the synchronization condition may be whether the adjacent cluster is synchronized with the terminal home cluster, whether the adjacent cluster is synchronized with other adjacent clusters, or whether the adjacent cluster is synchronized with a synchronization source such as a GPS.

The reference synchronization source may be, but not limited to, a serving cell of the terminal, a home cluster of the terminal, a neighboring cell of the terminal, a neighboring cluster of the terminal, or a GPS or other synchronization source where the terminal is located. For example, when the synchronization information indicates whether or not the neighboring cell (or neighboring cluster) is synchronized with the serving cell (or home cluster) of the terminal, the reference synchronization source refers to the serving cell (or home cluster); when the synchronization information indicates whether the neighboring cells (or the neighboring clusters) are synchronized, the reference synchronization source refers to one of the neighboring cells (or the neighboring clusters); when the synchronization information indicates whether the neighboring cell (or neighboring cluster) is synchronized with a synchronization source such as a GPS, the reference synchronization source refers to a synchronization source such as a GPS where the terminal is located.

The method for acquiring the synchronization reference of the neighboring cell or the neighboring cluster, or acquiring the synchronization reference of the terminal belonging to the neighboring cell or the neighboring cluster depends on the requirements of the actual application scenario.

The method provided by the embodiment of the invention acquires the synchronization information of the adjacent cell or the adjacent cluster, and acquires the synchronization reference of the adjacent cell or the adjacent cluster or the terminal therein according to the synchronization information. Compared with the prior art, the method has the advantages that the synchronous reference is directly obtained in a blind detection mode, and the processing complexity is reduced.

Preferably, the synchronization information of the neighboring cell or the neighboring cluster may further include at least one of the following:

identification information of a neighboring cell or a neighboring cluster;

sequence identification information of a synchronization signal of a terminal belonging to a neighboring cell or a neighboring cluster;

scrambling identification information of a synchronization signal of a terminal belonging to a neighboring cell or a neighboring cluster;

physical resource configuration information of neighboring cells or neighboring clusters.

Preferably, for the case that the synchronization information indicates that the neighboring cell or the neighboring cluster is synchronized with the reference synchronization source, a specific implementation manner of the terminal acquiring the synchronization reference of the neighboring cell or the neighboring cluster according to the synchronization information may be: the terminal determines the adjacent cell or the adjacent cluster synchronized with the reference synchronization source according to the synchronization condition of the adjacent cell or the adjacent cluster included in the synchronization information; and acquiring the synchronization reference of the adjacent cell or the adjacent cluster according to the synchronization reference of the reference synchronization source.

Preferably, for the case that the synchronization information indicates that the neighboring cell or the neighboring cluster is synchronized with the reference synchronization source, a specific implementation manner for the terminal to acquire the synchronization reference of the terminal belonging to the neighboring cell or the neighboring cluster according to the synchronization information may be: the terminal determines the adjacent cell or the adjacent cluster synchronized with the reference synchronization source according to the synchronization condition of the adjacent cell or the adjacent cluster included in the synchronization information; and acquiring the synchronization reference of the terminal belonging to the adjacent cell or the adjacent cluster according to the synchronization reference of the reference synchronization source.

The specific implementation manner of the terminal acquiring the synchronization reference of the neighboring cell or the neighboring cluster according to the synchronization reference of the reference synchronization source may be, but is not limited to, the following:

and (I) the terminal takes the synchronization reference of the reference synchronization source as the synchronization reference of the adjacent cell or the adjacent cluster synchronized with the reference synchronization source.

And secondly, the terminal shifts the synchronization reference of the reference synchronization source to be used as the synchronization reference of the adjacent cell or the adjacent cluster synchronized with the reference synchronization source.

The offset for performing the offset may be predetermined, or may be notified to the terminal by the base station or the cluster head.

In the embodiment of the present invention, the synchronization reference may be a synchronization reference in a time domain (i.e., synchronization timing), a synchronization reference in a frequency domain, or a synchronization reference in a time-frequency domain. If the synchronization timing is the synchronization timing, the offset is an offset in the time domain, if the synchronization timing is the synchronization reference in the frequency domain, the offset is an offset in the frequency domain, and if the synchronization timing is the synchronization reference in the time domain, the offset is an offset in the time domain and/or the frequency domain.

Thirdly, the terminal determines a first time-frequency resource position of a synchronization signal of a neighboring cell or a neighboring cluster which is synchronous with the terminal according to the synchronization reference of the reference synchronization source; detecting the synchronous signal of the adjacent cell or the adjacent cluster according to the determined position of the first time-frequency resource; and acquiring the synchronization reference of the adjacent cell or the adjacent cluster according to the detected synchronization signal.

and (I) the terminal takes the synchronization reference of the reference synchronization source as the synchronization reference of the terminal belonging to the adjacent cell or the adjacent cluster synchronized with the terminal.

And secondly, after the terminal shifts the synchronization reference of the reference synchronization source, the synchronization reference is used as the synchronization reference of the terminal belonging to the adjacent cell or the adjacent cluster synchronized with the terminal.

Thirdly, the terminal determines a first time-frequency resource position of a synchronization signal of a terminal which belongs to a neighboring cell or a neighboring cluster synchronized with the terminal according to the synchronization reference of the reference synchronization source; detecting a synchronization signal of a terminal belonging to the adjacent cell or the adjacent cluster according to the determined position of the first time-frequency resource; and acquiring the synchronization reference of the terminal belonging to the adjacent cell or the adjacent cluster according to the detected synchronization signal.

Preferably, for the case that the synchronization information indicates that the neighboring cell or the neighboring cluster is not synchronized with the reference synchronization source, a specific implementation manner of the terminal acquiring the synchronization reference of the neighboring cell or the neighboring cluster according to the synchronization information may be: the terminal determines the adjacent cell or the adjacent cluster which is not synchronous with the reference synchronous source according to the synchronous condition of the adjacent cell or the adjacent cluster included by the synchronous information; and detecting the synchronization signal of the adjacent cell or the adjacent cluster, and acquiring the synchronization reference of the adjacent cell or the adjacent cluster according to the detected synchronization signal.

Preferably, for the case that the synchronization information indicates that the neighboring cell or the neighboring cluster is not synchronized with the reference synchronization source, the specific implementation manner of the terminal acquiring the synchronization reference of the terminal belonging to the neighboring cell or the neighboring cluster according to the synchronization information may be: the terminal determines the adjacent cell or the adjacent cluster which is not synchronous with the reference synchronous source according to the synchronous condition of the adjacent cell or the adjacent cluster included by the synchronous information; and detecting a synchronization signal of the terminal belonging to the adjacent cell or the adjacent cluster, and acquiring a synchronization reference of the terminal belonging to the adjacent cell or the adjacent cluster according to the detected synchronization signal.

Preferably, the specific implementation manner of the terminal detecting the synchronization signal of the neighboring cell or the neighboring cluster may be, but is not limited to, the following:

and (I) the terminal detects the synchronous signals of the adjacent cells or the adjacent clusters by using the identification information of the adjacent cells or the adjacent clusters included by the synchronous information.

And (II) the terminal detects the synchronization signal of the adjacent cell or the adjacent cluster by using the sequence identification information of the synchronization signal of the terminal belonging to the adjacent cell or the adjacent cluster, which is included in the synchronization information.

And (III) the terminal detects the synchronous signal of the adjacent cell or the adjacent cluster by using the scrambling identification information of the synchronous signal of the terminal belonging to the adjacent cell or the adjacent cluster, which is included in the synchronous information.

And (IV) the terminal determines a second time-frequency resource position for detecting the synchronization signal of the adjacent cell or the adjacent cluster by using the physical resource configuration information of the adjacent cell or the adjacent cluster included by the synchronization information, and detects the synchronization signal of the adjacent cell or the adjacent cluster according to the second time-frequency resource position.

Preferably, the specific implementation manner of the terminal detecting the synchronization signal of the terminal belonging to the neighboring cell or the neighboring cluster may be, but is not limited to, the following:

and (I) the terminal detects the synchronous signal of the terminal belonging to the adjacent cell or the adjacent cluster by using the identification information of the adjacent cell or the adjacent cluster included by the synchronous information.

And (II) the terminal detects the synchronization signal of the terminal belonging to the adjacent cell or the adjacent cluster by using the sequence identification information of the synchronization signal of the terminal belonging to the adjacent cell or the adjacent cluster, which is included in the synchronization information.

And (III) the terminal detects the synchronous signal of the terminal belonging to the adjacent cell or the adjacent cluster by using the scrambling identification information of the synchronous signal of the terminal belonging to the adjacent cell or the adjacent cluster, which is included in the synchronous information.

And (IV) the terminal determines a second time-frequency resource position for detecting the synchronization signal of the adjacent cell or the adjacent cluster by using the physical resource configuration information of the adjacent cell or the adjacent cluster included by the synchronization information, and detects the synchronization signal of the terminal belonging to the adjacent cell or the adjacent cluster according to the second time-frequency resource position.

A method of transmitting synchronization information, comprising:

the communication management equipment acquires the synchronization information of the adjacent cell or the adjacent cluster, wherein the synchronization information at least comprises the synchronization condition of the adjacent cell or the adjacent cluster;

the communication management device sends the synchronization information to a terminal.

So that the terminal acquires the adjacent cell or the adjacent cluster according to the synchronization information; or acquiring the synchronization reference of the terminal belonging to the adjacent cell or the adjacent cluster according to the synchronization information.

Wherein, the communication management device is a base station or a cluster head.

In the method provided by the embodiment of the present invention, the communication management device sends synchronization information to the terminal, so that the terminal acquires synchronization information of a neighboring cell or a neighboring cluster, acquires the neighboring cell or the neighboring cluster according to the synchronization information, or acquires a synchronization reference of the terminal belonging to the neighboring cell or the neighboring cluster according to the synchronization information. Compared with the prior art, the method has the advantages that the synchronous reference is directly obtained in a blind detection mode, and the processing complexity is reduced.

Preferably, the specific implementation manner of the communication management device acquiring the synchronization information of the neighboring cell or the neighboring cluster may be, but is not limited to, the following:

the communication management equipment determines the communication management equipment to which the adjacent cell or the adjacent cluster belongs, and acquires the synchronization information of the adjacent cell or the adjacent cluster according to the communication management equipment to which the adjacent cell or the adjacent cluster belongs.

And secondly, the communication management equipment acquires the synchronization information of the adjacent cell or the adjacent cluster from the communication management equipment to which the adjacent cell or the adjacent cluster belongs.

And thirdly, the communication management equipment detects the synchronous signal sent by the communication management equipment to which the adjacent cell or the adjacent cluster belongs, and acquires the information of the adjacent cell or the adjacent cluster according to the detected synchronous signal.

Based on the same inventive concept as the method, an embodiment of the present invention provides a terminal, including:

a synchronization information acquiring unit, configured to acquire synchronization information of a neighboring cell or a neighboring cluster, where the synchronization information at least includes a synchronization condition of the neighboring cell or the neighboring cluster;

a synchronization reference acquiring unit, configured to acquire a synchronization reference of the neighboring cell or the neighboring cluster according to the synchronization information; or, according to the synchronization information, acquiring a synchronization reference of a terminal belonging to the neighboring cell or the neighboring cluster.

The terminal provided by the embodiment of the invention acquires the synchronization information of the adjacent cell or the adjacent cluster, and acquires the synchronization reference of the adjacent cell or the adjacent cluster or the terminal therein according to the synchronization information. Compared with the prior art, the method has the advantages that the synchronous reference is directly obtained in a blind detection mode, and the processing complexity is reduced.

Preferably, the synchronization information of the neighboring cell or the neighboring cluster may further include at least one of:

identification information of a neighboring cell or a neighboring cluster;

Preferably, the synchronization condition of the neighboring cell or the neighboring cluster specifically includes:

synchronization situation between a neighboring cell or neighboring cluster and a reference synchronization source.

Further, the reference synchronization source may be, but is not limited to: a serving cell of the terminal; or, a home cluster of the terminal; or, a neighboring cell of the terminal; or, a neighboring cluster of the terminal; or a synchronization source such as a GPS where the terminal is located.

Preferably, when acquiring the synchronization reference of the neighboring cell or the neighboring cluster, the synchronization reference acquiring unit is specifically configured to:

determining the adjacent cell or the adjacent cluster synchronized with the reference synchronization source according to the synchronization condition of the adjacent cell or the adjacent cluster included in the synchronization information; and acquiring the synchronization reference of the adjacent cell or the adjacent cluster according to the synchronization reference of the reference synchronization source.

Preferably, when acquiring a synchronization reference of a terminal belonging to the neighboring cell or the neighboring cluster, the synchronization reference acquiring unit is specifically configured to:

determining the adjacent cell or the adjacent cluster synchronized with the reference synchronization source according to the synchronization condition of the adjacent cell or the adjacent cluster included in the synchronization information; and acquiring the synchronous reference of the terminal belonging to the adjacent cell or the adjacent cluster according to the synchronous reference of the reference synchronous source.

Preferably, when the synchronization reference of the neighboring cell or the neighboring cluster is acquired according to the synchronization reference of the reference synchronization source, the synchronization reference acquiring unit is specifically configured to:

taking the synchronization reference of the reference synchronization source as the synchronization reference of the adjacent cell or the adjacent cluster; or, the synchronization reference of the reference synchronization source is shifted and then used as the synchronization reference of the neighboring cell or the neighboring cluster.

Preferably, when acquiring the synchronization reference of the terminal belonging to the neighboring cell or the neighboring cluster according to the synchronization reference of the reference synchronization source, the synchronization reference acquiring unit is specifically configured to:

taking the synchronization reference of the reference synchronization source as the synchronization reference of the terminal belonging to the adjacent cell or the adjacent cluster; or, the synchronization reference of the reference synchronization source is used as the synchronization reference of the terminal belonging to the neighboring cell or the neighboring cluster after being shifted.

determining a first time-frequency resource position for detecting the synchronization signal of the adjacent cell or the adjacent cluster according to the synchronization reference of the reference synchronization source; detecting the synchronous signals of the adjacent cells or the adjacent clusters according to the determined first time-frequency resource position; and acquiring the synchronization reference of the adjacent cell or the adjacent cluster according to the detected synchronization signal.

determining a first time-frequency resource position of a synchronization signal of a terminal which belongs to the adjacent cell or the adjacent cluster according to the synchronization reference of the reference synchronization source; detecting a synchronization signal of a terminal belonging to the adjacent cell or the adjacent cluster according to the determined position of the first time-frequency resource; and acquiring the synchronization reference of the terminal belonging to the adjacent cell or the adjacent cluster according to the detected synchronization signal.

determining a neighboring cell or a neighboring cluster which is not synchronized with the reference synchronization source according to the synchronization condition of the neighboring cell or the neighboring cluster included in the synchronization information;

and detecting the synchronization signal of the adjacent cell or the adjacent cluster, and acquiring the synchronization reference of the adjacent cell or the adjacent cluster according to the detected synchronization signal.

determining a neighboring cell or a neighboring cluster which is not synchronized with the reference synchronization source according to the synchronization condition of the neighboring cell or the neighboring cluster included in the synchronization information; and detecting a synchronization signal of the terminal belonging to the adjacent cell or the adjacent cluster, and acquiring a synchronization reference of the terminal belonging to the adjacent cell or the adjacent cluster according to the detected synchronization signal.

Preferably, when detecting the synchronization signal of the neighboring cell or the neighboring cluster, the synchronization reference acquiring unit is specifically configured to:

detecting a synchronization signal of the neighboring cell or the neighboring cluster using the identification information of the neighboring cell or the neighboring cluster included in the synchronization information; or, using sequence identification information of a synchronization signal of a terminal belonging to the neighboring cell or the neighboring cluster included in the synchronization information, detecting the synchronization signal of the neighboring cell or the neighboring cluster; or, using scrambling identification information of a synchronization signal of a terminal belonging to the neighboring cell or the neighboring cluster included in the synchronization information, detecting the synchronization signal of the neighboring cell or the neighboring cluster; or, determining a second time-frequency resource position for detecting the synchronization signal of the neighboring cell or the neighboring cluster by using the physical resource configuration information of the neighboring cell or the neighboring cluster included in the synchronization information, and detecting the synchronization signal of the neighboring cell or the neighboring cluster according to the second time-frequency resource position.

Preferably, when detecting a synchronization signal of a terminal belonging to the neighboring cell or the neighboring cluster, the synchronization reference acquiring unit is specifically configured to:

detecting a synchronization signal of a terminal belonging to the neighboring cell or the neighboring cluster using the identification information of the neighboring cell or the neighboring cluster included in the synchronization information; or, using sequence identification information of the synchronization signal of the terminal belonging to the neighboring cell or the neighboring cluster included in the synchronization information, detecting the synchronization signal of the terminal belonging to the neighboring cell or the neighboring cluster; or, using scrambling identification information of a synchronization signal of a terminal belonging to the neighboring cell or the neighboring cluster included in the synchronization information, detecting the synchronization signal of the terminal belonging to the neighboring cell or the neighboring cluster; or, determining a second time-frequency resource location of detecting a synchronization signal of a terminal belonging to the neighboring cell or the neighboring cluster by using the physical resource configuration information of the neighboring cell or the neighboring cluster included in the synchronization information, and detecting the synchronization signal of the terminal belonging to the neighboring cell or the neighboring cluster according to the second time-frequency resource location.

Based on the same inventive concept as the method, the embodiment of the invention also provides a terminal, which comprises a processor and a radio frequency unit.

Wherein the radio frequency unit is configured to acquire synchronization information of a neighboring cell or a neighboring cluster.

The processor is configured to acquire a synchronization reference of the neighboring cell or the neighboring cluster according to the synchronization information; or, acquiring a synchronization reference of a terminal belonging to a neighboring cell or a neighboring cluster according to the synchronization information.

Based on the same inventive concept as the method, an embodiment of the present invention provides a communication management apparatus, including:

a synchronization information acquisition unit for acquiring synchronization information of a neighboring cell or a neighboring cluster;

and the synchronous information sending unit is used for sending the synchronous information to the terminal.

So that the terminal can acquire the neighboring cell or the neighboring cluster according to the synchronization information, or acquire the synchronization reference of the terminal belonging to the neighboring cell or the neighboring cluster according to the synchronization information.

The communication management device provided by the embodiment of the invention sends the synchronization information to the terminal, so that the terminal can acquire the synchronization information of the adjacent cell or the adjacent cluster, and acquire the synchronization reference of the adjacent cell or the adjacent cluster or the terminal therein according to the synchronization information. Compared with the prior art, the method has the advantages that the synchronous reference is directly obtained in a blind detection mode, and the processing complexity is reduced.

Preferably, the synchronization information obtaining unit is specifically configured to:

determining a base station to which a neighboring cell or a neighboring cluster belongs, and acquiring synchronization information of the neighboring cell or the neighboring cluster according to the base station to which the neighboring cell or the neighboring cluster belongs; or,

acquiring synchronization information of a neighboring cell or a neighboring cluster from a base station or a cluster head to which the neighboring cell or the neighboring cluster belongs; or,

and detecting a synchronization signal sent by a base station or a cluster head to which the adjacent cell or the adjacent cluster belongs, and acquiring synchronization information of the adjacent cell or the adjacent cluster according to the detected synchronization signal.

Based on the same inventive concept as the method, an embodiment of the present invention further provides a communication management apparatus, including a processor configured to acquire synchronization information of a neighboring cell or a neighboring cluster, and send the synchronization information to a terminal.

The communication management device provided by the embodiment of the invention sends the synchronization information to the terminal, so that the terminal can acquire the adjacent cell or the adjacent cluster according to the synchronization information, or acquire the synchronization reference of the terminal belonging to the adjacent cell or the adjacent cluster according to the synchronization information. Compared with the prior art, the method has the advantages that the synchronous reference is directly obtained in a blind detection mode, and the processing complexity is reduced.

Drawings

Fig. 1 is a flowchart of a method for acquiring a synchronization reference according to an embodiment of the present invention;

fig. 2 is a flowchart of a method for sending synchronization information according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a terminal according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a communication control device according to an embodiment of the present invention.

Detailed Description

The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

The method for acquiring the synchronization reference provided by the embodiment of the invention is shown in fig. 1, and specifically comprises the following operations:

step 100, the terminal acquires the synchronization information of the adjacent cell or the adjacent cluster.

The terminal may obtain the synchronization information from the serving cell, for example, through a broadcast message or downlink control signaling. The terminal may also obtain the synchronization information from the home cluster.

Wherein neighboring cells may be characterized by a cell ID; neighboring clusters may be characterized by a cluster ID.

Step 110, the terminal obtains the synchronization reference of the adjacent cell or the adjacent cluster according to the synchronization information; or, the terminal acquires the synchronization reference of the terminal belonging to the neighboring cell or the neighboring cluster according to the synchronization information.

The synchronization condition of the neighboring cell or the neighboring cluster specifically includes: synchronization situation between a neighboring cell or neighboring cluster and a reference synchronization source. For the adjacent cells, the synchronization condition can be whether the adjacent cells are synchronized with the service cell of the terminal or not, or whether the adjacent cells are synchronized with other adjacent cells or not, or whether the adjacent cells are synchronized with a synchronization source such as a Global Positioning System (GPS) or not; for the adjacent cluster, the synchronization condition may be whether the adjacent cluster is synchronized with the terminal home cluster, whether the adjacent cluster is synchronized with other adjacent clusters, or whether the adjacent cluster is synchronized with a synchronization source such as a GPS.

Wherein the reference synchronization source is characterized by a cell identifier or a cluster identifier, or is an agreed synchronization source (such as a serving cell or GPS). Specifically, if the reference synchronization source is a cell, the reference synchronization source is characterized by a cell ID, and the UE uses a synchronization reference obtained by performing synchronization signal detection based on the corresponding cell ID as a synchronization reference of the reference synchronization source; if the reference synchronization source is a cluster, the reference synchronization source is characterized by a cluster ID, and the UE takes a synchronization reference obtained by performing synchronization signal detection based on the corresponding cluster ID as a synchronization reference of the reference synchronization source; if the reference synchronization source is the serving cell, the UE takes the synchronization reference of the serving cell where the UE is located as the synchronization reference of the reference synchronization source; and if the reference synchronization source is the agreed GPS, the UE takes the synchronization reference determined by the GPS signal received by the UE as the synchronization reference of the reference synchronization source.

Wherein the synchronization information indicates at least a synchronization situation of the neighboring cell or the neighboring cluster. And, in one synchronization information, a synchronization situation of at least one neighboring cell or neighboring cluster may be indicated. The reference synchronization source may be, but not limited to, a serving cell of the terminal, a home cluster of the terminal, a neighboring cell of the terminal, a neighboring cluster of the terminal, or a GPS or other synchronization source where the terminal is located. For example, when the synchronization information indicates whether or not the neighboring cell (or neighboring cluster) is synchronized with the serving cell (or home cluster) of the terminal, the reference synchronization source refers to the serving cell (or home cluster); when the synchronization information indicates whether the neighboring cells (or the neighboring clusters) are synchronized, the reference synchronization source refers to one of the neighboring cells (or the neighboring clusters); when the synchronization information indicates whether the neighboring cell (or neighboring cluster) is synchronized with a synchronization source such as a GPS, the reference synchronization source refers to a synchronization source such as a GPS where the terminal is located.

The embodiment of the present invention does not limit the specific content contained in the synchronization information, and the following only exemplifies the content that may be contained in the synchronization information:

the synchronization information may include content (one), identification information of neighboring cells or neighboring clusters. Specifically, the cell ID of the neighboring cell may be used for detecting a synchronization signal or other data transmission signal (such as D2D signal) of the neighboring cell. Or cluster IDs of neighboring clusters for performing detection of synchronization signals of neighboring cells or other data transmission signals, such as D2D signals.

The synchronization information may include cell IDs (or cluster IDs) of all neighboring cells (or neighboring clusters), may include only cell IDs (or cluster IDs) of neighboring cells (or neighboring clusters) synchronized with a serving cell (or home cluster) of the terminal, and may include only cell IDs (or cluster IDs) of neighboring cells (or neighboring clusters) not synchronized with the serving cell (or home cluster) of the terminal. Specifically, the cell IDs (or cluster IDs) of neighboring cells (or neighboring clusters) are pre-agreed by the base station (or cluster head) and the terminal, or the base station (or cluster head) informs the terminal in advance, or are defined in the communication standard.

The synchronization signal of the neighboring cell (or the neighboring cluster) refers to a synchronization signal transmitted by a base station (or a cluster head) to which the neighboring cell belongs, and is transmitted on an agreed fixed physical resource.

The synchronization information may include content (two), sequence identification information or scrambling identification information of a synchronization signal of a terminal of a home neighbor cell or a neighbor cluster. Specifically, the sequence ID or the scrambling ID used by the terminal in the neighboring cell (or the neighboring cluster) to transmit the synchronization signal may be used for detecting the synchronization signal of the terminal in the neighboring cell (or the neighboring cluster).

The synchronization information may include sequence IDs or scrambling IDs of synchronization signals of terminals in all neighboring cells (or neighboring clusters), may include only sequence IDs or scrambling IDs of synchronization signals of terminals in neighboring cells (or neighboring clusters) synchronized with a serving cell (or home cluster) of the terminal, and may include only sequence IDs or scrambling IDs of synchronization signals of terminals in neighboring cells (or neighboring clusters) not synchronized with the serving cell (or home cluster) of the terminal. Specifically, the sequence ID or scrambling ID of the synchronization signal of the terminal in which the neighboring cell (or neighboring cluster) is included is predetermined by the base station (or cluster head) and the terminal, or the base station (or cluster head) notifies the terminal in advance, or is defined in the communication standard.

Wherein the synchronization signal comprises a synchronization sequence or a synchronization sequence and a synchronization channel. The sequence ID is used to generate a synchronization sequence and the scrambling ID is used to perform scrambling of the synchronization channel.

The synchronization information may include content (three), synchronization situation of neighboring cells or neighboring clusters. In addition to the above-mentioned synchronization situation between the neighboring cell or the neighboring cluster and the reference synchronization source, a synchronization error range between the neighboring cell or the neighboring cluster and the reference synchronization source may be included.

The synchronization information may include contents (four), physical resource configuration information of neighboring cells or neighboring clusters. And specifically, the physical resource configuration information of the neighboring cell (or neighboring cluster) is used to reduce the complexity of synchronization and signal detection of the neighboring cell (or neighboring cluster) between the terminal and the neighboring cell (or neighboring cluster). The physical resource configuration information specifically includes one or a combination of the following: uplink and downlink subframe configuration information, D2D resource configuration information and carrier information.

The method provided by the embodiment of the invention acquires the synchronization information of the adjacent cell or the adjacent cluster, and acquires the synchronization timing of the adjacent cell or the adjacent cluster or the terminal therein in a proper mode according to the synchronization condition indicated by the synchronization information. Compared with the prior art, the method and the device directly acquire synchronous timing in a blind detection mode, and reduce the processing complexity.

In the embodiment of the invention, the synchronous reference of the reference synchronous source is obtained by the terminal through detecting the synchronous signal or the GPS signal of the reference synchronous source.

The specific implementation manner of determining the first time-frequency resource location may be: the terminal determines the time-frequency resource position of the signal transmitted between the terminal and the reference synchronization source according to the synchronization timing of the reference synchronization source, and determines the time-frequency resource position as the basic time-frequency resource position of the signal transmitted between the terminal and the adjacent cell or the adjacent cluster (or the terminal belonging to the adjacent cell or the adjacent cluster); a first time-frequency resource location based on the base time-frequency resource location is determined.

Preferably, the terminal may determine the first time-frequency resource location based on the basic time-frequency resource location according to a maximum difference of transmission delays between different neighboring cells or neighboring clusters and the terminal. The terminal may also determine a first time-frequency resource location based on the basic time-frequency resource location according to a synchronization error range between the neighboring cell or the neighboring cluster included in the synchronization information and the reference synchronization source.

In LTE, a UE uses a downlink synchronization signal transmitted by an evolved node b (eNB) to obtain a synchronization reference for downlink reception and uplink transmission. The downlink synchronous signal is composed of a main synchronous signal and an auxiliary synchronous signal, and respectively uses a ZC sequence and an m sequence to occupy a fixed resource position. The UE can acquire a cell id (cell id) of the cell by detecting the primary synchronization signal and the secondary synchronization signal of the cell, so as to perform subsequent processing, such as a cell access process.

The specific implementation manner for determining the second time-frequency resource position may be: and the terminal determines the basic time-frequency resource position of the signal transmitted between the terminal and the adjacent cell or the adjacent cluster (or the terminal belonging to the adjacent cell or the adjacent cluster) according to the physical resource configuration information of the adjacent cell or the adjacent cluster included in the synchronization information, and takes the basic time-frequency resource position as a second time-frequency resource position. Or determining a second time frequency resource position based on the basic time frequency resource position by combining the basic time frequency resource position with the first time frequency resource position. Preferably, the first time-frequency resource position and the second time-frequency resource position each indicate partial physical resource information.

As shown in fig. 2, a method for sending synchronization information according to an embodiment of the present invention specifically includes the following operations:

step 200, the communication management device acquires the synchronization information of the adjacent cell or the adjacent cluster.

Step 210, the communication management device sends the synchronization information to the terminal.

Wherein, the communication management device is a base station or a cluster head. For the base station, the synchronization information may be sent through a broadcast message or downlink control signaling.

In the method provided by the embodiment of the invention, the communication management equipment sends the synchronization information to the terminal so that the terminal can acquire the synchronization information of the adjacent cell or the adjacent cluster, and acquires the synchronization reference of the adjacent cell or the adjacent cluster or the terminal in the adjacent cell or the adjacent cluster according to the synchronization information. Compared with the prior art, the method has the advantages that the synchronous reference is directly obtained in a blind detection mode, and the processing complexity is reduced.

For example, the base station determines that it is synchronized with the serving cell of the terminal for neighboring cells belonging to the own base station, and determines that it is not synchronized with the serving cell of the terminal for neighboring cells belonging to other base stations. For another example, the base station determines that two neighboring cells belong to the same base station, and then determines that the two neighboring cells are synchronized, otherwise, determines that the two neighboring cells are not synchronized.

And secondly, the communication management equipment acquires the synchronization information of the adjacent cell or the adjacent cluster from the communication management equipment to which the adjacent cell or the adjacent cluster belongs. For example, the communication management device of the serving cell communicates with the communication management device of the neighboring cell or the neighboring cluster through the X2 interface, and acquires the synchronization information of the neighboring cell or the neighboring cluster from the communication management device of the neighboring cell or the neighboring cluster.

The following describes the technical solution provided by the embodiments of the present invention in detail by taking an example of acquiring the synchronization timing of a neighboring cell or a neighboring cluster, and taking an example of a UE and a base station cooperating with a specific application scenario.

It should be noted that this does not mean that the two must be implemented in cooperation. In fact, when the base station and the UE are implemented separately, the problems of the base station and the UE are solved, and when the base station and the UE are used in combination, a better technical effect is obtained.

In addition, the implementation manners of obtaining the synchronization reference of the UE in the neighboring cell, obtaining the synchronization reference of the neighboring cluster, and obtaining the synchronization reference of the UE in the neighboring cluster may refer to the implementation manner of obtaining the synchronization reference of the neighboring cell, and will not be described in detail again.

The application scene one:

assume that the UE1 is within network coverage with its serving cell being cell 1 and cell ID being ID 1; there are 3 neighboring cells, cell 2 (cell ID is ID 2), cell 3 (cell ID is ID 3), and cell 4 (cell ID is ID 4).

The base station of the serving cell where the UE1 is located obtains the synchronization information of the neighboring cell according to the condition of the base station to which the neighboring cell belongs. Specifically, cells belonging to the same base station may be considered synchronized, and cells belonging to different base stations may be considered unsynchronized.

The base station transmits the obtained synchronization information including the cell IDs of the neighboring cells of all cells 1 and information on whether to synchronize with cell 1 to the UE 1. Specifically, the synchronization information ID2, ID3, ID4 and 1-bit indication information corresponding to all cell IDs, where the value of the indication information is 0, indicate that all neighboring cells corresponding to the cell IDs carried in the synchronization information are synchronized with cell 1. If the value of the indication information is 1, it indicates that the neighboring cells corresponding to the cell ID carried in the synchronization information are not synchronized with the cell 1.

UE1 obtains the synchronization information from the base station and determines from the synchronization information that cell 2, cell 3, and cell 4 are all synchronized with cell 1. Then, the UE1 takes the downlink synchronization timing obtained from the cell 1 as the downlink synchronization timing of each neighboring cell.

The UE1 detects signals from neighboring cells based on their cell IDs and downlink synchronization timing.

Application scenario two:

The base station of the serving cell where the UE1 is located performs information interaction with neighboring base stations, thereby obtaining synchronization information indicating synchronization conditions of the neighboring cells. Specifically, the base stations may interact with each other at the starting time of the subframe and the current subframe number, so that the base station of the serving cell determines whether the neighboring cell and the serving cell are synchronized and/or the synchronization error range. In addition, the base stations can also interact with each other to synchronize with the GSP so as to acquire the information whether to synchronize.

The base station transmits the obtained synchronization information including the cell IDs of all neighboring cells to the UE 1. Specifically, the synchronization information includes ID2, ID3, and ID4, and the synchronization information further includes 1-bit indication information corresponding to each cell ID, where a value of the indication information is 0, which indicates that neighboring cells corresponding to the corresponding cell IDs are all synchronized with cell 1, and a value of the indication information is 1, which indicates that neighboring cells corresponding to the corresponding cell IDs are all not synchronized with cell 1. In this embodiment, the value of the 1-bit indication information corresponding to the ID2 is 0, and the values of the 1-bit indication information corresponding to the ID3 and the 1-bit indication information corresponding to the ID4 are both 1.

The UE1 obtains the above synchronization information and determines that cell 2 is synchronized with cell 1 and that cell 3 and cell 4 are not synchronized with cell 1 based on the synchronization information. Then, the UE1 determines the basic time-frequency resource position of the downlink signal of the cell 2 according to the downlink synchronization timing obtained from the cell 1, detects the downlink synchronization signal of the cell 2 within plus or minus 10us near the basic time-frequency resource position, and obtains the downlink synchronization timing of the cell 2 according to the detected downlink synchronization signal. Where 10us is the maximum difference in the transmission delays of downlink synchronization signals of two neighboring cells of the assumed UE1 to reach the UE 1. The UE1 detects the downlink synchronization signal of the cell 2, that is, correlates the synchronization sequence determined according to the cell ID2 of the cell 2 included in the synchronization information with the received signal within a period of time, and determines the start position of the current synchronization signal according to the position of the correlation peak, thereby obtaining the downlink timing of the cell 2. The UE1 detects downlink synchronization signals transmitted by the base stations of the cells 3 and 4 based on the cell IDs (ID 3 and ID 4) of the cells 3 and 4, respectively. Assume that the UE1 detects the downlink synchronization signal of cell 3 and thus obtains the downlink timing of cell 3.

Since the UE1 does not detect the downlink synchronization signal of the cell 4, it is necessary to continue to detect the synchronization signal transmitted by the UE in the cell 4. The synchronization signal sent by the UE in cell 4 can be blindly detected based on ID4 until the synchronization timing of cell 4 is detected and obtained. Specifically, the UE1 blindly detects all the physical resources that may be used for the UE in the cell 4 to transmit the synchronization signal on the bandwidth of the synchronization signal.

The UE detects signals from the cells 2,3,4 based on the downlink timing of the cells 2,3, the synchronization timing of the cell 4, and the respective cell IDs of the cells 2,3, 4.

Application scenario three:

The base station of the serving cell in which the UE1 is located obtains synchronization information indicating synchronization conditions of neighboring cells by detecting synchronization signals transmitted by neighboring base stations.

The base station transmits the obtained synchronization information including the cell IDs of all neighboring cells to the UE 1. Specifically, the synchronization information ID2, ID3 and ID4 further include indication information that cell 2 is synchronized with cell 1, indication information that cell 3 is not synchronized with cell 1, and indication information that cell 3 is synchronized with cell 4.

The UE1 obtains the above synchronization information, and determines that cell 2 is synchronized with cell 1, cell 3 is not synchronized with cell 1, and cell 3 is synchronized with cell 4 according to the synchronization information. Then, the UE1 determines the basic time-frequency resource position of the downlink signal of the cell 2 according to the downlink synchronization timing obtained from the cell 1, detects the downlink synchronization signal of the cell 2 within plus or minus 10us near the basic time-frequency resource position, and obtains the downlink synchronization timing of the cell 2 according to the detected downlink synchronization signal. Where 10us is the maximum difference in the transmission delays of downlink synchronization signals of two neighboring cells of the assumed UE1 to reach the UE 1. The UE1 detects the downlink synchronization signal of the cell 2, that is, correlates the synchronization sequence with the received signal within 10us, and determines the starting position of the current synchronization signal according to the position of the correlation peak, thereby obtaining the downlink timing of the cell 2. The UE1 detects the downlink synchronization signal transmitted by the base station of the cell 3 from the cell ID (ID 3) of the cell 3, and thereby obtains the downlink timing of the cell 3. The UE1 determines the downlink timing of cell 4 based on the downlink timing of cell 3 (cell 3 is the reference synchronization source for cell 4).

The UE detects signals from cells 2,3,4 based on the downlink timing of cells 2,3,4 and the respective cell IDs of cells 2,3, 4.

Application scenario four

Suppose the UE1 is outside the network coverage, the cluster in which it is located is cluster 1, and the cluster ID is ID 1; there are 2 adjacent clusters, cluster 2 (cluster ID is ID 2) and cluster 3 (cluster ID is ID 3).

The cluster head of the cluster where the UE1 is located obtains the synchronization information of the neighboring cluster by directly detecting the synchronization signal transmitted by the neighboring cluster head.

The cluster head of the cluster 1 transmits the acquired synchronization information to the UE, and the synchronization information includes information on whether each neighboring cluster is synchronized with the cluster 1, and a cluster ID of a cluster that is not synchronized with the cluster 1. Wherein, the information whether each adjacent cluster is synchronous with the cluster 1 is respectively indicated by 1 bit information, 0 represents that the adjacent cluster is synchronous with the cluster 1, and 1 represents that the adjacent cluster is not synchronous with the cluster 1; it is assumed here that cluster 2 corresponds to an indication of 0, and cluster 3 corresponds to an indication of 1, and that the cluster ID of unsynchronized cluster 3 is ID 3.

The UE1 acquires the synchronization information, and determines the downlink timing that has been acquired from the cluster 1 as the downlink timing of the cluster 2 according to the synchronization information; information that cluster 3 obtained from the cluster head is not synchronized with cluster 1, and the cluster ID (ID 3) of cluster 3, a downlink synchronization signal transmitted by the cluster head of cluster 3 is detected based on ID 3. And the downlink synchronous signals sent by the cluster heads are sent on the appointed time frequency resources. Assume that the UE1 detects the downlink synchronization signal of cluster 3 and thus obtains the downlink timing of cluster 3.

The UE1 detects signals from clusters 2,3 based on the downlink timing of clusters 2, 3.

Based on the same inventive concept as the method, an embodiment of the present invention provides a terminal, as shown in fig. 3, including:

a synchronization information acquiring unit 301, configured to acquire synchronization information of a neighboring cell or a neighboring cluster, where the synchronization information at least includes a synchronization condition of the neighboring cell or the neighboring cluster;

a synchronization reference acquiring unit 302, configured to acquire a synchronization reference of the neighboring cell or the neighboring cluster according to the synchronization information; or, according to the synchronization information, acquiring a synchronization reference of a terminal belonging to the neighboring cell or the neighboring cluster.

identification information of a neighboring cell or a neighboring cluster;

Preferably, when acquiring the synchronization reference of the neighboring cell or the neighboring cluster, the synchronization reference acquiring unit 302 is specifically configured to:

Preferably, when acquiring a synchronization reference of a terminal belonging to the neighboring cell or the neighboring cluster, the synchronization reference acquiring unit 302 is specifically configured to:

Preferably, when acquiring the synchronization reference of the neighboring cell or the neighboring cluster according to the synchronization reference of the reference synchronization source, the synchronization reference acquiring unit 302 is specifically configured to:

Preferably, when acquiring the synchronization reference of the terminal belonging to the neighboring cell or the neighboring cluster according to the synchronization reference of the reference synchronization source, the synchronization reference acquiring unit 302 is specifically configured to:

Preferably, when detecting the synchronization signal of the neighboring cell or the neighboring cluster, the synchronization reference acquiring unit 302 is specifically configured to:

Preferably, when detecting a synchronization signal of a terminal belonging to the neighboring cell or the neighboring cluster, the synchronization reference acquiring unit 302 is specifically configured to:

Based on the same inventive concept as the method, an embodiment of the present invention provides a communication management apparatus, as shown in fig. 4, including:

a synchronization information acquiring unit 401, configured to acquire synchronization information of a neighboring cell or a neighboring cluster;

a synchronization information sending unit 402, configured to send the synchronization information to the terminal.

Preferably, the synchronization information obtaining unit 401 is specifically configured to:

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method of acquiring a synchronization reference, comprising:

2. The method of claim 1, wherein the synchronization information of the neighboring cell or the neighboring cluster further comprises at least one of:

identification information of a neighboring cell or a neighboring cluster;

3. The method according to claim 1, wherein the synchronization condition of the neighboring cell or the neighboring cluster specifically includes:

4. The method of claim 3, wherein the reference synchronization source is:

a serving cell of the terminal; or,

the home cluster of the terminal; or,

a neighboring cell of the terminal; or,

a neighboring cluster of the terminal; or,

and the global positioning system where the terminal is located.

5. The method according to claim 3, wherein the acquiring, by the terminal, the synchronization reference of the neighboring cell or the neighboring cluster according to the synchronization information specifically includes:

the terminal determines the adjacent cell or the adjacent cluster synchronized with the reference synchronization source according to the synchronization condition of the adjacent cell or the adjacent cluster included in the synchronization information; the terminal acquires the synchronous reference of the adjacent cell or the adjacent cluster according to the synchronous reference of the reference synchronous source;

the acquiring, by the terminal, the synchronization reference of the terminal belonging to the neighboring cell or the neighboring cluster according to the synchronization information specifically includes:

the terminal determines the adjacent cell or the adjacent cluster synchronized with the reference synchronization source according to the synchronization condition of the adjacent cell or the adjacent cluster included in the synchronization information; and the terminal acquires the synchronous reference of the terminal belonging to the adjacent cell or the adjacent cluster according to the synchronous reference of the reference synchronous source.

6. The method of claim 5, wherein the acquiring, by the terminal, the synchronization reference of the neighboring cell or the neighboring cluster according to the synchronization reference of the reference synchronization source comprises:

the terminal takes the synchronization reference of the reference synchronization source as the synchronization reference of the adjacent cell or the adjacent cluster; or, the terminal shifts the synchronization reference of the reference synchronization source to serve as the synchronization reference of the adjacent cell or the adjacent cluster;

the terminal acquires the synchronization reference of the terminal belonging to the neighboring cell or the neighboring cluster according to the synchronization reference of the reference synchronization source, including:

the terminal takes the synchronization reference of the reference synchronization source as the synchronization reference of the terminal belonging to the adjacent cell or the adjacent cluster; or, the terminal shifts the synchronization reference of the reference synchronization source to serve as the synchronization reference of the terminal belonging to the neighboring cell or the neighboring cluster.

7. The method of claim 5, wherein the acquiring, by the terminal, the synchronization reference of the neighboring cell or the neighboring cluster according to the synchronization reference of the reference synchronization source comprises:

the terminal determines a first time-frequency resource position for detecting the synchronization signal of the adjacent cell or the adjacent cluster according to the synchronization reference of the reference synchronization source; the terminal detects the synchronous signal of the adjacent cell or the adjacent cluster according to the determined position of the first time-frequency resource; the terminal acquires the synchronous reference of the adjacent cell or the adjacent cluster according to the detected synchronous signal;

the terminal determines a first time-frequency resource position of a synchronization signal of the terminal which belongs to the adjacent cell or the adjacent cluster according to the synchronization reference of the reference synchronization source; the terminal detects a synchronization signal of the terminal belonging to the adjacent cell or the adjacent cluster according to the determined position of the first time-frequency resource; and the terminal acquires the synchronous reference of the terminal belonging to the adjacent cell or the adjacent cluster according to the detected synchronous signal.

8. The method according to claim 3, wherein the acquiring, by the terminal, the synchronization reference of the neighboring cell or the neighboring cluster according to the synchronization information specifically includes:

the terminal determines the adjacent cell or the adjacent cluster which is not synchronous with the reference synchronization source according to the synchronization condition of the adjacent cell or the adjacent cluster included by the synchronization information;

the terminal detects the synchronous signal of the adjacent cell or the adjacent cluster, and acquires the synchronous reference of the adjacent cell or the adjacent cluster according to the detected synchronous signal;

and the terminal detects the synchronous signal of the terminal belonging to the adjacent cell or the adjacent cluster, and acquires the synchronous reference of the terminal belonging to the adjacent cell or the adjacent cluster according to the detected synchronous signal.

9. The method according to claim 7 or 8, wherein the terminal detects the synchronization signal of the neighboring cell or the neighboring cluster, comprising:

the terminal detects the synchronization signal of the adjacent cell or the adjacent cluster by using the identification information of the adjacent cell or the adjacent cluster included in the synchronization information; or, the terminal detects the synchronization signal of the neighboring cell or the neighboring cluster by using the sequence identification information of the synchronization signal of the terminal belonging to the neighboring cell or the neighboring cluster, which is included in the synchronization information; or, the terminal detects the synchronization signal of the neighboring cell or the neighboring cluster by using the scrambling identification information of the synchronization signal of the terminal belonging to the neighboring cell or the neighboring cluster, which is included in the synchronization information; or, the terminal determines a second time-frequency resource position for detecting the synchronization signal of the neighboring cell or the neighboring cluster by using the physical resource configuration information of the neighboring cell or the neighboring cluster included in the synchronization information, and detects the synchronization signal of the neighboring cell or the neighboring cluster according to the second time-frequency resource position;

the detecting, by the terminal, the synchronization signal of the terminal belonging to the neighboring cell or the neighboring cluster includes:

the terminal detects the synchronization signal of the terminal belonging to the adjacent cell or the adjacent cluster by using the identification information of the adjacent cell or the adjacent cluster included in the synchronization information; or, the terminal detects the synchronization signal of the terminal belonging to the neighboring cell or the neighboring cluster by using the sequence identification information of the synchronization signal of the terminal belonging to the neighboring cell or the neighboring cluster, which is included in the synchronization information; or, the terminal detects the synchronization signal of the terminal belonging to the neighboring cell or the neighboring cluster by using the scrambling identification information of the synchronization signal of the terminal belonging to the neighboring cell or the neighboring cluster, which is included in the synchronization information; or, the terminal determines, by using the physical resource configuration information of the neighboring cell or the neighboring cluster included in the synchronization information, a second time-frequency resource location for detecting a synchronization signal of the terminal belonging to the neighboring cell or the neighboring cluster, and detects, according to the second time-frequency resource location, the synchronization signal of the terminal belonging to the neighboring cell or the neighboring cluster.

10. A method for transmitting synchronization information, comprising:

the communication management equipment acquires synchronization information of a neighboring cell or a neighboring cluster, wherein the synchronization information at least comprises synchronization conditions of the neighboring cell or the neighboring cluster;

and the communication management equipment sends the synchronization information to a terminal so that the terminal can acquire the adjacent cell or the adjacent cluster according to the synchronization information, or acquire the synchronization reference of the terminal belonging to the adjacent cell or the adjacent cluster according to the synchronization information.

11. The method of claim 10, wherein the acquiring synchronization information of the neighboring cell or the neighboring cluster by the communication management device comprises:

the communication management equipment determines communication management equipment to which a neighboring cell or a neighboring cluster belongs, and acquires synchronization information of the neighboring cell or the neighboring cluster according to the communication management equipment to which the neighboring cell or the neighboring cluster belongs; or,

the communication management equipment acquires the synchronization information of the adjacent cell or the adjacent cluster from the communication management equipment to which the adjacent cell or the adjacent cluster belongs; or,

the communication management equipment detects a synchronization signal sent by the communication management equipment to which the adjacent cell or the adjacent cluster belongs, and acquires information of the adjacent cell or the adjacent cluster according to the detected synchronization signal.

12. A terminal, comprising:

13. The terminal of claim 12, wherein the synchronization information of the neighboring cell or the neighboring cluster further comprises at least one of the following:

identification information of a neighboring cell or a neighboring cluster;

14. The terminal according to claim 12, wherein the synchronization condition of the neighboring cell or the neighboring cluster specifically includes:

15. The terminal of claim 14, wherein the reference synchronization source is:

a serving cell of the terminal; or,

the home cluster of the terminal; or,

a neighboring cell of the terminal; or,

a neighboring cluster of the terminal; or,

and the global positioning system where the terminal is located.

16. The terminal according to claim 14, wherein when acquiring the synchronization reference of the neighboring cell or the neighboring cluster, the synchronization reference acquiring unit is specifically configured to:

determining the adjacent cell or the adjacent cluster synchronized with the reference synchronization source according to the synchronization condition of the adjacent cell or the adjacent cluster included in the synchronization information; acquiring the synchronous reference of the adjacent cell or the adjacent cluster according to the synchronous reference of the reference synchronous source;

when acquiring the synchronization reference of the terminal belonging to the neighboring cell or the neighboring cluster, the synchronization reference acquiring unit is specifically configured to:

17. The terminal according to claim 16, wherein when acquiring the synchronization reference of the neighboring cell or the neighboring cluster according to the synchronization reference of the reference synchronization source, the synchronization reference acquiring unit is specifically configured to:

taking the synchronization reference of the reference synchronization source as the synchronization reference of the adjacent cell or the adjacent cluster; or, after shifting the synchronization reference of the reference synchronization source, the synchronization reference is used as the synchronization reference of the neighboring cell or the neighboring cluster;

when acquiring the synchronization reference of the terminal belonging to the neighboring cell or the neighboring cluster according to the synchronization reference of the reference synchronization source, the synchronization reference acquiring unit is specifically configured to:

18. The terminal according to claim 16, wherein when acquiring the synchronization reference of the neighboring cell or the neighboring cluster according to the synchronization reference of the reference synchronization source, the synchronization reference acquiring unit is specifically configured to:

determining a first time-frequency resource position for detecting the synchronization signal of the adjacent cell or the adjacent cluster according to the synchronization reference of the reference synchronization source; detecting the synchronous signals of the adjacent cells or the adjacent clusters according to the determined first time-frequency resource position; acquiring a synchronization reference of the adjacent cell or the adjacent cluster according to the detected synchronization signal;

19. The terminal according to claim 14, wherein when acquiring the synchronization reference of the neighboring cell or the neighboring cluster, the synchronization reference acquiring unit is specifically configured to:

detecting a synchronization signal of the adjacent cell or the adjacent cluster, and acquiring a synchronization reference of the adjacent cell or the adjacent cluster according to the detected synchronization signal;

20. The terminal according to claim 18 or 19, wherein when detecting the synchronization signal of the neighboring cell or the neighboring cluster, the synchronization reference acquiring unit is specifically configured to:

detecting a synchronization signal of the neighboring cell or the neighboring cluster using the identification information of the neighboring cell or the neighboring cluster included in the synchronization information; or, using sequence identification information of a synchronization signal of a terminal belonging to the neighboring cell or the neighboring cluster included in the synchronization information, detecting the synchronization signal of the neighboring cell or the neighboring cluster; or, using scrambling identification information of a synchronization signal of a terminal belonging to the neighboring cell or the neighboring cluster included in the synchronization information, detecting the synchronization signal of the neighboring cell or the neighboring cluster; or, determining a second time-frequency resource position for detecting a synchronization signal of the neighboring cell or the neighboring cluster by using the physical resource configuration information of the neighboring cell or the neighboring cluster included in the synchronization information, and detecting the synchronization signal of the neighboring cell or the neighboring cluster according to the second time-frequency resource position;

when detecting a synchronization signal of a terminal belonging to the neighboring cell or the neighboring cluster, the synchronization reference acquiring unit is specifically configured to:

21. A communication management apparatus, characterized by comprising:

a synchronization information sending unit, configured to send the synchronization information to a terminal, so that the terminal obtains the neighboring cell or the neighboring cluster according to the synchronization information, or obtains a synchronization reference of the terminal belonging to the neighboring cell or the neighboring cluster according to the synchronization information.

22. The communication management device according to claim 21, wherein the synchronization information acquiring unit is specifically configured to: