WO2015042954A1

WO2015042954A1 - Method for inter-station synchronization and base station

Info

Publication number: WO2015042954A1
Application number: PCT/CN2013/084717
Authority: WO
Inventors: 范霄安; 郑娟; 马莎; 夏媛; 李强
Original assignee: 华为技术有限公司
Priority date: 2013-09-30
Filing date: 2013-09-30
Publication date: 2015-04-02
Also published as: CN104685941B; CN104685941A

Abstract

Provided are a method for inter-station synchronization and a base station. The method comprises: generating, by a synchronization source base station, a first synchronization reference signal and a second synchronization reference signal, wherein a pattern of the first synchronization reference signal and a pattern of the second synchronization reference signal are different; and sending, by the synchronization source base station, the first synchronization reference signal and the second synchronization reference signal to a synchronization base station so that the synchronization base station performs time synchronization with the synchronization source base station according to the first synchronization reference signal, and performs frequency synchronization with the synchronization source base station according to the second synchronization reference signal. In the embodiments of the present invention, by sending a first synchronization reference signal and a second synchronization reference signal with different patterns to a synchronization base station, the synchronization base station can be synchronized with a synchronization source base station, and the requirements of time synchronization and frequency synchronization can be met at the same time.

Description

Method and base station for synchronizing between stations

Embodiments of the present invention relate to the field of communications, and more particularly, to a method and base station for inter-station synchronization. Background technique

In a wireless cellular network, in order to reduce the pressure of the macro base station and also to provide better data services to the terminal, one or more micro base stations may be deployed to offload the macro base station. However, in order to ensure normal data transmission, the macro base station and the micro base station must be synchronized between the micro base station and the micro base station. The inter-station synchronization between the synchronization source base station providing the synchronization information and the synchronization base station acquiring the synchronization information is time synchronized and frequency synchronized. However, the synchronization method currently used cannot simultaneously satisfy the requirements of time synchronization and frequency synchronization of the synchronous base station. Summary of the invention

The embodiments of the present invention provide a method for synchronizing between stations and a base station, which can solve the problem that the requirements of time synchronization and frequency synchronization cannot be simultaneously satisfied.

In a first aspect, a method for inter-station synchronization is provided, the method comprising: a synchronization source base station generating a first synchronization reference signal and a second synchronization reference signal, a pattern of the first synchronization reference signal and the second synchronization reference The synchronization signal base station transmits the first synchronization reference signal and the second synchronization reference signal to the synchronization base station, so that the synchronization base station and the synchronization source base station according to the first synchronization reference signal Time synchronization is performed and frequency synchronization with the source base station is performed according to the second synchronization reference signal.

With reference to the first aspect, in a first possible implementation, the method further includes: configuring, by the synchronization source base station, a pattern of the first synchronization reference signal and the second synchronization according to a synchronization requirement of the synchronization base station And a pattern of the reference signal, so that the synchronization source base station generates the first synchronization reference signal according to the pattern of the first synchronization reference signal, and generates the second synchronization reference signal according to the pattern of the second synchronization reference signal.

With reference to the first aspect, in a second possible implementation, the method further includes: the synchronization source base station receiving a pattern of the first synchronization reference signal sent by the base station manager or the operation management maintenance OAM, and the second Synchronizing a pattern of reference signals such that the synchronization source base station is in accordance with the Generating a first synchronization reference signal in a pattern of a synchronization reference signal, and generating the second synchronization reference signal according to a pattern of the second synchronization reference signal, wherein a pattern of the first synchronization reference signal and the second The pattern of synchronization reference signals is configured by the base station manager or the OAM.

With reference to the first aspect, in a third possible implementation, the method further includes: the synchronization source base station receiving a synchronization level of the base station manager or the OAM and a pattern of the first synchronization reference signal and/or a second synchronization reference a mapping relationship between patterns of signals; the synchronization source base station configures a pattern of the first synchronization reference signal and a pattern of the second synchronization reference signal according to the mapping relationship, so that the synchronization source base station is configured according to the Generating a first synchronization reference signal according to a pattern of the synchronization reference signal, and generating the second synchronization reference signal according to the pattern of the second synchronization reference signal in combination with the first aspect, or any one of the possible implementation manners described above, In a fourth possible implementation manner, the pattern of the first synchronization reference signal and the pattern of the second synchronization reference signal are different, including: a pattern of the first synchronization reference signal and a second synchronization reference signal The following information of the pattern is at least one different: period, time-frequency resource, and sequence resource.

A second aspect provides a method for inter-station synchronization, the method comprising: receiving, by a synchronization base station, a first synchronization reference signal and a second synchronization reference signal sent by a synchronization source base station, a pattern of the first synchronization reference signal, and the The pattern of the second synchronization reference signal is different; the synchronization base station performs time synchronization with the synchronization source base station according to the first synchronization reference signal and performs frequency synchronization with the synchronization source base station according to the second synchronization reference signal.

With reference to the second aspect, in a first possible implementation manner, the method further includes: acquiring, by the synchronization base station, a pattern of the first synchronization reference signal and a pattern of the second synchronization reference signal.

With the second aspect or the first possible implementation manner of the second aspect, in a second possible implementation, the time synchronization with the synchronization source base station according to the first synchronization reference signal includes: Time synchronization with the synchronization source base station according to the first synchronization reference signal and the second synchronization reference signal.

With reference to the second aspect, or any one of the foregoing possible implementation manners, in a third possible implementation manner, the performing frequency synchronization with the synchronization source base station according to the second synchronization reference signal includes: A synchronization reference signal and the second synchronization reference signal are frequency synchronized with the synchronization source base station.

In a third aspect, a base station is provided, where the base station includes: a generating unit, configured to generate a first a step reference signal and a second synchronization reference signal, the pattern of the first synchronization reference signal and the pattern of the second synchronization reference signal are different; a transmitting unit, configured to: the first synchronization reference signal and the second synchronization The reference signal is sent to the synchronization base station, so that the synchronization base station performs time synchronization with the base station according to the first synchronization reference signal and performs frequency synchronization with the base station according to the second synchronization reference signal.

With reference to the third aspect, in a first possible implementation, the base station further includes: a configuration unit, configured to configure a pattern of the first synchronization reference signal and the second synchronization according to a synchronization requirement of the synchronization base station And a pattern of the reference signal, so that the base station generates the first synchronization reference signal according to the pattern of the first synchronization reference signal, and generates the second synchronization reference signal according to the pattern of the second synchronization reference signal.

With reference to the third aspect, in a second possible implementation, the base station further includes: a receiving unit, configured to receive a pattern of the first synchronization reference signal sent by the base station manager or the operation management and maintenance OAM, and the second And synchronizing the pattern of the reference signal, so that the base station generates the first synchronization reference signal according to the pattern of the first synchronization reference signal, and generates the second synchronization reference signal according to the pattern of the second synchronization reference signal, where The pattern of the first synchronization reference signal and the pattern of the second synchronization reference signal are configured by the base station manager or the OAM.

With reference to the third aspect, in a third possible implementation, the base station further includes: a receiving unit, configured to receive a synchronization level of the base station manager or the OAM and a pattern of the first synchronization reference signal and/or a second synchronization reference a mapping relationship between the patterns of the signals; a configuration unit, configured to configure a pattern of the first synchronization reference signal and a pattern of the second synchronization reference signal according to the mapping relationship, so that the base station is configured according to the first synchronization The first synchronization reference signal is generated by a pattern of reference signals, and the second synchronization reference signal is generated according to a pattern of the second synchronization reference signal.

With reference to the third aspect, or any one of the foregoing possible implementation manners, in a fourth possible implementation manner, the patterns of the first synchronization reference signal and the second synchronization reference signal are different, including: the first synchronization The pattern of the reference signal and the following information of the pattern of the second synchronization reference signal are at least one different: a period, a time-frequency resource, and a sequence resource.

According to a fourth aspect, a base station is provided, the base station includes: a receiving unit, configured to receive a first synchronization reference signal and a second synchronization reference signal sent by a synchronization source base station, a pattern of the first synchronization reference signal, and the The two synchronization reference signals are different in pattern; the processing unit is configured to perform time synchronization with the synchronization source base station according to the first synchronization reference signal and perform frequency synchronization with the synchronization source base station according to the second synchronization reference signal. With reference to the fourth aspect, in a first possible implementation, the receiving unit is further configured to acquire a pattern of the first synchronization reference signal and a pattern of the second synchronization reference signal.

With reference to the fourth aspect, or the first possible implementation manner of the fourth aspect, in a second possible implementation, the processing unit is further configured to: according to the first synchronization reference signal and the second synchronization The reference signal is time synchronized with the synchronization source base station.

With reference to the fourth aspect, or any one of the foregoing possible implementation manners, in a third possible implementation, the processing unit is further configured to: according to the first synchronization reference signal and the second synchronization reference signal The synchronization source base station performs frequency synchronization.

In a fifth aspect, a base station is provided, the base station comprising: a processor and a transceiver circuit. The processor is configured to generate a first synchronization reference signal and a second synchronization reference signal, the pattern of the first synchronization reference signal and the pattern of the second synchronization reference signal being different. The transceiver circuit is configured to send the first synchronization reference signal and the second synchronization reference signal generated by the processor to a synchronization base station, so that the synchronization base station performs with the base station according to the first synchronization reference signal. Time synchronization and frequency synchronization with the base station based on the second synchronization reference signal.

With reference to the fifth aspect, in a first possible implementation, the processor is further configured to configure a pattern of the first synchronization reference signal and the second synchronization reference signal according to a synchronization requirement of the synchronization base station a pattern, wherein the processor further generates the first synchronization reference signal according to a pattern of the first synchronization reference signal, and generates the second synchronization reference signal according to a pattern of the second synchronization reference signal

With reference to the fifth aspect, in a second possible implementation, the transceiver circuit is further configured to receive a pattern of the first synchronization reference signal and a pattern of the second synchronization reference signal configured by a base station manager or an OAM So that the processor generates the first synchronization reference signal according to the pattern of the first synchronization reference signal, and generates the second synchronization reference signal according to the pattern of the second synchronization reference signal.

With reference to the fifth aspect, in a third possible implementation, the transceiver circuit is further configured to receive a synchronization level of the base station manager or the OAM configuration and a pattern of the first synchronization reference signal and/or a pattern of the second synchronization reference signal The mapping relationship between them. The processor is further configured to configure a pattern of the first synchronization reference signal and a pattern of the second synchronization reference signal according to the mapping relationship and a synchronization level of the base station.

In a sixth aspect, a base station is provided, the base station comprising: a processor and a transceiver circuit. The transceiver circuit is configured to receive a first synchronization reference signal and a second synchronization reference signal sent by a synchronization source base station, The pattern of the first synchronization reference signal and the pattern of the second synchronization reference signal are different. The processor is configured to perform time synchronization with the synchronization source base station according to the first synchronization reference signal received by the transceiver circuit, and according to the second synchronization reference signal received by the transceiver circuit and the synchronization source base station Perform frequency synchronization.

In conjunction with the sixth aspect, in a first possible implementation, the transceiver circuit is further configured to acquire a pattern of the first synchronization reference signal and a pattern of the second synchronization reference signal.

With reference to the sixth aspect, or the first possible implementation manner of the sixth aspect, in a second possible implementation, the processor is configured to use, according to the first synchronization reference signal and the second synchronization reference signal The synchronization source base station performs time synchronization.

With reference to the sixth aspect, or any one of the foregoing possible implementation manners, in a third possible implementation manner, the processor is further configured to perform, according to the first synchronization reference signal and the second synchronization reference signal, The synchronization source base station performs frequency synchronization.

The embodiment of the present invention can transmit the first synchronization reference signal and the second synchronization reference signal with different patterns to the synchronization base station, so that the synchronization base station can synchronize with the synchronization source base station, and can simultaneously meet the requirements of time synchronization and frequency synchronization. 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 or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only the present invention. For some embodiments, other drawings may be obtained from those skilled in the art without any inventive labor.

FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present invention.

2 is a schematic diagram of a method of inter-station synchronization in accordance with an embodiment of the present invention.

Fig. 3 is a diagram showing an example of a schematic diagram of a pattern of a first synchronization reference signal and a second synchronization reference signal according to an embodiment of the present invention.

Fig. 4 is another example of a schematic diagram of a pattern of a first synchronization reference signal and a second synchronization reference signal according to another embodiment of the present invention.

Fig. 5 is another example of a schematic diagram of a pattern of a first synchronization reference signal and a second synchronization reference signal according to another embodiment of the present invention.

6 is another example of a schematic diagram of a pattern of a third synchronization reference signal according to another embodiment of the present invention. 7 is a schematic diagram of a method of inter-station synchronization in accordance with another embodiment of the present invention.

FIG. 8 is a schematic flow chart of a method for inter-station synchronization according to another embodiment of the present invention.

Figure 9 is a block diagram of a base station in accordance with one embodiment of the present invention.

Figure 10 is a block diagram of a base station in accordance with another embodiment of the present invention.

Figure 11 is a block diagram of a base station in accordance with another embodiment of the present invention.

Figure 12 is a block diagram of a base station in accordance with another 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, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without making creative labor are within the scope of the present invention.

It should be understood that embodiments of the present invention may be applied to various communication systems, such as: Global Mobile Communications

(Global System of Mobile communication, GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (General Packet Radio Service) , GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, Universal Mobile Telecommunication System (UMTS), etc.

It should be understood that the base station described in the embodiment of the present invention may be a base station in GSM or CDMA.

(Base Transceiver Station, BTS), which may also be a base station (NodeB) in WCDMA, an eNB or an e-NodeB in LTE, or a Wireless Local Area Network (WLAN) access point ( Access Point, AP), the present invention does not limit this.

FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present invention. The schematic diagram of Fig. 1 includes a macro base station 101, a 敖 base station 102, a 敖 base station 103 and a 敖 base station 104.

In the embodiment of the present invention, inter-station synchronization refers to synchronization between different base stations. As shown in FIG. 1, between the macro base station 101 and the micro base station 102, between the micro base station 102 and the micro base station 103, and the micro base station

Inter-station synchronization is required between 103 and the micro base station 104. In order to identify synchronization status between different cells, a synchronization level between different base stations can be defined. Through Global Positioning System (Global Positioning)

System, GPS), macro base station or other external synchronization source to achieve synchronization of the base station synchronization level is 1 ( stratum-1), the 敖 base station 102 shown in FIG. 1 is a base station with a synchronization level of 1. The synchronization level of another base station that achieves synchronization by the base station of synchronization level 1 is 2, and the micro base station 103 shown in FIG. 1 is a base station with synchronization level 2. Similarly, the micro base station 104 shown in FIG. 1 is a base station with a synchronization level of 3.

For the sake of clarity, the base station that acquires synchronization information such as time synchronization information, frequency synchronization information, and the like is referred to as a synchronization base station, and the base station that provides synchronization information for the synchronization base station is referred to as a synchronization source base station. As shown in FIG. 1, when inter-station synchronization is implemented between the macro base station 101 and the micro base station 102, the macro base station 101 is a synchronization source base station, and the micro base station 102 is a synchronization base station. When inter-station synchronization is implemented between the micro base station 102 and the micro base station 103, the micro base station 102 is a synchronization source base station, and the micro base station 103 is a synchronization base station. When inter-station synchronization is implemented between the micro base station 103 and the micro base station 104, the micro base station 103 is a synchronization source base station, and the micro base station 104 is a synchronization base station. It can be seen that the synchronization source base station and the synchronization base station are relative concepts. A base station can be either a synchronization source base station or a synchronization base station, and must determine the specific inter-station synchronization between the base stations and determine which base station is synchronized. The source base station is also a synchronous base station. For example, as shown in the micro base station 102 of FIG. 1, when the micro base station 102 and the macro base station 101 implement inter-station synchronization, the micro base station 102 is a synchronous base station. When the micro base station 103 and the micro base station 102 implement inter-station synchronization, the micro base station 102 is a synchronization source base station.

It should be understood that the synchronization source base station and/or the synchronization base station in the embodiment of the present invention may be a macro base station, which may be a micro base station (Micro eNB), or may be a pico base station (Pico eNB), or even a mega-micro base station (Femto). The eNBs, and so on; the different base stations in the embodiments of the present invention may belong to the same carrier, or may belong to different operators, which is not limited by the present invention.

In the embodiment of the present invention, the synchronous base station realizes time synchronization and frequency synchronization of the synchronous base station and the synchronization source base station by receiving the synchronization reference signal sent by the synchronization source base station, which is called inter-station synchronization. The synchronization reference signal sent by the synchronization source base station may be referred to as an inter-station synchronization reference signal, and may also be referred to as a Network Listening Reference Signal (NLRS), or may be another reference signal name. This is not limited, as long as the reference signals that can implement the method of the embodiments of the present invention are all within the protection scope of the present invention.

For example, when the micro base station 102 needs to implement inter-station synchronization with the macro base station 101, the micro base station 102 functions as a synchronization base station to receive a synchronization reference signal transmitted by the macro base station 101 as a synchronization source base station. Specifically, the macro base station 101 first transmits a synchronization reference signal carrying synchronization information to the micro base station 102, and then the micro base station 102 obtains time synchronization information and frequency synchronization information from the received synchronization reference signal. That is to say, the micro base station 102 wants to implement time synchronization and frequency synchronization, and the utilized bearer The pattern of the synchronization reference signal of the synchronization information is the same, and the requirements for the pattern of the synchronization reference signal are different because the requirements of time synchronization and frequency synchronization are satisfied, thus causing the micro base station 102 to utilize the pattern of the same synchronization reference signal. Time synchronization and frequency synchronization cannot be met simultaneously when implementing inter-station synchronization.

In addition, when receiving the synchronization reference signal, the micro base station 102 does not satisfy the duplex between the transmission band in which the micro base station 102 transmits data to the user equipment (User Equipment, UE) 105 served by it and the reception band in which the synchronization reference signal is received. The interval, that is, the micro base station 102 cannot receive the synchronization reference signal and transmit data to the UE 105 at the same time, the micro base station 102 must first interrupt the data transmission with the UE 105 to further complete the inter-station synchronization. Here, the micro base station 102 The data transmission time between the interruption and the UE 105 is called the inter-station synchronization overhead. That is to say, when implementing inter-station synchronization, the required inter-station synchronization overhead is relatively large.

2 is a schematic diagram of a method of inter-station synchronization according to an embodiment of the present invention. The method shown in Figure 2 includes:

201. The synchronization source base station generates a first synchronization reference signal and a second synchronization reference signal, where a pattern of the first synchronization reference signal and a pattern of the second synchronization reference signal are different.

202. The synchronization source base station sends the first synchronization reference signal and the second synchronization reference signal to the synchronization base station, so that the synchronization base station performs time synchronization with the synchronization source base station according to the first synchronization reference signal, and according to the second synchronization reference. The signal is frequency synchronized with the synchronization source base station.

The embodiment of the present invention can transmit the first synchronization reference signal and the second synchronization reference signal with different patterns to the synchronization base station, so that the synchronization base station can synchronize with the synchronization source base station, and can simultaneously meet the requirements of time synchronization and frequency synchronization.

In the embodiment of the present invention, the pattern of the synchronization reference signal includes a period of the synchronization reference signal, a time-frequency resource of the synchronization reference signal, and a sequence resource of the synchronization reference signal. The pattern of the first synchronization reference signal and the pattern of the second synchronization reference signal are different, that is, the period of the first synchronization reference signal and the second synchronization reference signal, the time-frequency resource and the sequence resource are at least one different.

It should be noted that the time-frequency resource available resource element (Resource Element, in the embodiment of the present invention)

Represented by RE), it can also be represented by a resource block (RB), and can also be represented by other forms, which is not limited by the present invention.

Time-frequency resources in the embodiments of the present invention include time resources and frequency resources. The time resource is an integer multiple of a time unit. One time unit here may be an Orthogonal Frequency Division Multiplexing (OFDM) symbol, or may be a slot or a time slot. a subframe, or a radio frame (radio) The frame may be other time units, which is not limited by the present invention. The frequency resource is an integer multiple of one subcarrier.

A signal generated by a Zadoff-Chu sequence, or a signal generated by a machine-generated sequence. Specifically, the sequence resource in the embodiment of the present invention may be a Common Reference Signal (CRS), a Channel State Information Reference Signal (CSI-RS), or a positioning reference signal. (Positioning Reference Signal, PRS), which may also be a Discovery Reference Signal (DRS), or a Multi-Broadcast Single-Frequency Network Reference Signal (MBSFN RS). Other signals are not limited by the present invention.

Fig. 3 is a view showing an example of a schematic diagram of patterns of a first synchronization reference signal and a second synchronization reference signal in an embodiment of the present invention. For convenience of description, Fig. 3 shows only a pattern of one cycle, in which the horizontal axis represents time and the vertical axis represents frequency. As shown in FIG. 3, the time periods of the first synchronization reference signal and the second synchronization reference signal are different, and the time-frequency resources are also different. Specifically, the period of the first synchronization reference signal is smaller than the period of the second synchronization reference signal, and the first The synchronization reference signal has one time unit, the second synchronization reference signal has three time units, and the time resources of the first synchronization reference signal and the second synchronization reference signal partially coincide. It should be noted that the shading in FIG. 3 is only a schematic description, for example, assuming that the time unit is one subframe and each sub-frame has two slots, the shadow does not mean that the time-frequency resource fills all the sub-frames. RE. Specifically, the first synchronization reference signal occupies one subframe, indicating that the first synchronization reference signal occupies a plurality of discrete or consecutive REs of the subframe, and the second synchronization reference signal occupies three consecutive subframes, indicating that the second synchronization The reference signals occupy a plurality of discrete or continuous REs of the three subframes, respectively. And the time resources of the first synchronization reference signal and the second synchronization reference signal are partially overlapped in the embodiment of the present invention, and only the subframes occupied by the two are coincident from the perspective of the time axis. The REs occupied by the synchronization reference signal and the second synchronization reference signal on the coincident time resource may be the same or different, which is not limited by the present invention.

4 is another example of a schematic diagram of a pattern of a first synchronization reference signal and a second synchronization reference signal according to another embodiment of the present invention. Still only shows a pattern of one cycle. As shown in FIG. 4, the periods of the first synchronization reference signal and the second synchronization reference signal are different, and the time-frequency resources are also different. Specifically, the period of the first synchronization reference signal is smaller than the period of the second synchronization reference signal, the first synchronization reference signal has one time unit, and the second synchronization reference signal has three consecutive time units, and The time resources of the first synchronization reference signal and the second synchronization reference signal do not coincide. It should be noted that the shading in FIG. 4 is schematic. For details, refer to the description of FIG. 3. To avoid repetition, details are not described herein again.

Fig. 5 is another example of a schematic diagram of a pattern of a first synchronization reference signal and a second synchronization reference signal according to another embodiment of the present invention. Still only shows a pattern of one cycle. As shown in Fig. 5, the periods of the first synchronization reference signal and the second synchronization reference signal are different, and the time-frequency resources are also different. Specifically, the period of the first synchronization reference signal is smaller than the period of the second synchronization reference signal, the first synchronization reference signal has one time unit, the second synchronization reference signal has three time units, and the first synchronization reference signal and the second synchronization The time resources of the reference signals overlap, but the time resources of the second synchronization reference signals are not continuous. In addition, the shading in FIG. 5 is also schematic. For a detailed description, reference may be made to the description of FIG. 3. To avoid repetition, details are not described herein again.

Optionally, as an embodiment, as shown in any one of FIG. 3 to FIG. 5, if the sequence resources used by the first synchronization reference signal and the second synchronization reference signal are the same, for example, all are CRS, but A synchronization reference signal occupies one subframe in the period of the first synchronization reference signal, that is, the first synchronization reference signal occupies the corresponding time-frequency resource location according to the current specified CRS in the time-frequency resource mapping position in one subframe. The second synchronization reference signal occupies three consecutive or discontinuous subframes in the period of the second synchronization reference signal, wherein the second synchronization reference signal occupies the time-frequency resource location in each subframe with the first synchronization reference The time-frequency resource location occupied by the signal in one subframe is the same. That is, the RE occupied by the second synchronization reference signal in each of its three consecutive or discontinuous subframes is the same as the RE occupied by the first synchronization reference signal in one of its subframes. of.

It should be understood that Figures 3 through 5 are just some illustrative examples of the patterns of the first synchronization reference signal and the second synchronization reference signal. As long as the first synchronization reference signal and the second synchronization reference signal have different patterns and can be used for inter-station synchronization, it is within the scope of the present invention. For example, the first synchronization reference signal and the second synchronization reference signal may have the same period and different time-frequency resources. As another example, the first synchronization reference signal and the second synchronization reference signal can have discontinuous time resources at the same time. In addition, the number of time units of the first synchronization reference signal and the second synchronization reference signal in FIG. 3 to FIG. 5 is only schematic, and is merely for convenience of description, and the present invention does not limit the number of specific time units. .

Optionally, as an embodiment, before the step 201, the method may further include: the synchronization source base station configuring the pattern of the first synchronization reference signal and the second according to the synchronization requirement of the synchronization base station And synchronizing the pattern of the reference signal, so that the synchronization source base station generates the first synchronization reference signal according to the pattern of the first synchronization reference signal, and generates the second synchronization reference signal according to the pattern of the second synchronization reference signal.

The synchronization requirement of the synchronization base station may be determined by factors such as characteristics of the synchronization base station, characteristics of the synchronization base station affecting synchronization performance, and channel characteristics between the synchronization base station and the synchronization source base station.

Optionally, as another embodiment, the synchronization source base station may configure a pattern of the first synchronization reference signal according to the synchronization requirement of the synchronization base station for time synchronization, and may configure the second synchronization reference signal according to the synchronization requirement of the synchronization base station for frequency synchronization. picture of.

It should be noted that, in the embodiment of the present invention, two synchronization source base stations having the same synchronization level are configured to configure a pattern of the first synchronization reference signal and a pattern of the second synchronization reference signal, and the two synchronization source base stations do not interfere with each other. And the pattern of the first synchronization reference signal and the pattern of the second synchronization reference signal, which are respectively configured, may be the same or different.

In this embodiment, the synchronization source base station separately configures the pattern of the first synchronization reference signal and the pattern of the second synchronization reference signal according to different requirements of the synchronization base station for time synchronization and frequency synchronization, and can satisfy the synchronization base station and the synchronization source base station. The requirement of time synchronization can meet the requirement of frequency synchronization between the synchronous base station and the synchronization source base station, and can also reduce the inter-station synchronization overhead of the synchronous base station, and further, can reduce the synchronization base station to serve it during the synchronization process. The impact of user equipment.

Optionally, as another embodiment, before the step 201, the method may further include: the synchronization source base station receiving the pattern of the first synchronization reference signal configured by the base station manager or the Operation Administration Maintenance (OAM) a pattern of the second synchronization reference signal, so that the synchronization source base station generates the first synchronization reference signal according to the pattern of the first synchronization reference signal, and generates the second synchronization reference signal according to the pattern of the second synchronization reference signal. Alternatively, as another embodiment, before step 201, the method may further include: the synchronization source base station receiving the synchronization level of the base station manager or the UI configuration and the pattern of the first synchronization reference signal and/or the second synchronization reference signal a mapping relationship between the patterns, and further configuring the pattern of the first synchronization reference signal and the second synchronization reference signal pattern according to the synchronization level of the synchronization source base station and the mapping relationship, so that the synchronization source base station is configured according to the first synchronization reference Generating a pattern of signals to generate the first synchronization reference signal, and according to the second Pattern of the reference signal generated second synchronization reference signal. Optionally, as another embodiment, before the step 201, the method may further include: the synchronization source base station according to a standard predefined synchronization level and a pattern of the first synchronization reference signal and/or a pattern of the second synchronization reference signal Between the mapping relationship, and further configuring the pattern of the first synchronization reference signal and the second synchronization reference signal pattern according to the synchronization level of the synchronization source base station and the mapping relationship, so that the synchronization source base station is configured according to the first synchronization reference signal. The pattern generates the first synchronization reference signal, and generates the second synchronization reference signal according to the pattern of the second synchronization reference signal.

Optionally, in another embodiment, in step 201, the synchronization source base station generates the first synchronization reference signal according to the pattern of the first synchronization reference signal, and generates the second synchronization according to the pattern of the second synchronization reference signal. Reference signal. The pattern of the first synchronization reference signal and the pattern of the second synchronization reference signal may be standard predefined, may be configured by a synchronization source base station, or may be obtained by a synchronization source base station from a base station manager or OAM. The invention is not limited thereto.

Optionally, in another embodiment, in step 202, the synchronization source base station may further convert a synchronization level with a pattern of the first synchronization reference signal and/or a pattern of the second synchronization reference signal, and the synchronization source. The synchronization level of the base station is sent to the synchronization base station, so that the synchronization base station determines the pattern of the first synchronization reference signal and the pattern of the second synchronization reference signal according to the mapping relationship and the synchronization level.

Optionally, in another embodiment, in step 202, the synchronization source base station may further send the synchronization level of the synchronization source base station to the synchronization base station, so as to synchronize the base station according to the synchronization level and received from the base station manager or the OAM. The mapping relationship determines a pattern of the first synchronization reference signal and a pattern of the second synchronization reference signal.

Optionally, as another embodiment, in step 202, the synchronization source base station may directly send the pattern of the first synchronization reference signal and the pattern of the second synchronization reference signal to the synchronization base station.

Optionally, in another embodiment, the synchronization source base station may further convert the foregoing mapping relationship and the synchronization level of the synchronization source base station, or the synchronization level of the synchronization source base station, or the first synchronization, by means of indication signaling. The pattern of the reference signal and the pattern of the second synchronization reference signal are sent to the synchronization base station, where the indication signaling may be backhaul signaling, or may be air interface signaling, or may be other signaling forms, The invention is not limited thereto.

Optionally, in another embodiment, in step 201, the synchronization source base station may also generate a redundant reference signal, where the redundant reference signal may be sent together with the first synchronization reference signal and the second synchronization reference signal. To the synchronous base station, for example, it can be transmitted on a time resource adjacent to the first synchronization reference signal. In this way, the synchronous base station can be based on the first synchronization reference signal and the second synchronization parameter. When the test signal is synchronized, if the requirement of the synchronization performance of the time synchronization or the frequency synchronization is not satisfied, the out-of-synchronization determination may be performed according to the redundant reference signal. Further, the synchronization base station may determine whether it needs to be restarted according to the result of the out-of-synchronization determination. Determine the synchronization source base station. Optionally, the redundant reference signal may also be sent to the synchronization base station without being combined with the first reference signal and the second reference signal, but only reserved in the synchronization source base station. Then, when the synchronization performance requirement of the synchronous base station is not met, the synchronization base station is further sent to the synchronization base station to perform the out-of-synchronization determination according to the redundant reference signal.

Optionally, in another embodiment, in step 201, the synchronization source base station may generate a third synchronization reference signal, where the third synchronization reference signal may be the first synchronization reference signal and the second synchronization reference signal described above. Superimposed.

The period of the third synchronization reference signal may be the minimum time required to satisfy the frequency synchronization stability, where the frequency synchronization stability refers to the third synchronization reference signal in one period of the synchronization base station using the third synchronization reference signal. The frequency synchronization error that can be achieved by all or part of the frequency synchronization, and the frequency synchronization requirement can be satisfied before the period of the next third synchronization reference signal arrives. Alternatively, the period of the third synchronization reference signal may also be the minimum time required to satisfy the time synchronization stability. The understanding of the time synchronization stability is similar to the understanding of the frequency synchronization stability, and details are not described herein again. Alternatively, the period of the third synchronization reference signal may also be a combination of a minimum time required to satisfy the frequency synchronization stability and a minimum time required to satisfy the time synchronization stability, and may be, for example, a minimum time required to satisfy the frequency synchronization stability. And the least common multiple of the minimum time required to satisfy the time synchronization stability or an integer multiple of the least common multiple. Alternatively, the period of the third synchronization reference signal may be other values, which is not limited in the present invention.

In addition, the pattern of the third synchronization reference signal is non-uniform during one period of the third synchronization reference signal. That is, the distribution of the time unit and/or the frequency unit of the third synchronization reference signal in one cycle is non-uniform, or the time-frequency resource of the third synchronization reference signal on different time units in one cycle and/or Or sequence resources are not the same. For example, as described above for the first synchronization reference signal and the second synchronization reference signal, the third synchronization reference signal may occupy a plurality of discontinuous time units, and the intervals between the discontinuous time units are different. Or the time resource of the third synchronization reference signal in one cycle may have multiple time units, and the time-frequency resources and/or sequence resources in at least two different time units of the multiple time units are different. of.

Further, in step 202, the synchronization source base station may send the third synchronization reference signal to the synchronization base station, so that the synchronization base station performs the synchronization with the synchronization source base station according to the third synchronization reference signal. Inter-synchronization and frequency synchronization.

Fig. 6 is another example of a schematic diagram of a pattern of a third synchronization reference signal according to another embodiment of the present invention. The third synchronization reference signal shown in Fig. 6 is a superposition of the second synchronization reference signal shown in Fig. 6 of the first synchronization reference signal shown in Fig. 6. The period of the first synchronization reference signal and the second synchronization reference signal are the same. The first synchronization reference signal occupies four discrete time units, and the distribution of the four discrete time units in one cycle is non-uniform, that is, the element occupies three consecutive time units. And the first time unit of the first synchronization reference signal in one cycle coincides with the first time unit of the second synchronization reference signal in one cycle on the time axis.

For example, the period of the third synchronization reference signal shown in Fig. 6 is the same as the period of the first synchronization reference signal and the period of the second synchronization reference signal, and the pattern of the third synchronization reference signal is not uniform. Specifically, the third synchronization reference signal shown in FIG. 6 occupies 6 discontinuous time units, the time intervals between the discontinuous time units are different, and at least three synchronization reference signals among the 6 time units The time-frequency resources of the first time unit and the second time unit are different.

It should be noted that FIG. 6 is only an example of the description of the third synchronization reference signal, and the present invention does not limit the specific pattern of the third synchronization reference signal, and the first synchronization reference signal and the second synchronization reference that are superimposed into the third synchronization reference signal. The pattern of the signal is also not limited. For example, the first synchronization reference signal and the second synchronization reference signal superimposed as the third synchronization reference signal may have the same period, or different periods. For example, the first synchronization reference signal and/or the second synchronization reference signal superimposed into the third synchronization reference signal may have one time unit and may have a plurality of consecutive time units or a plurality of discrete time units. The invention is not limited thereto.

It should be noted that the embodiment of the present invention does not limit the reference signal format of the first synchronization reference signal and the second synchronization reference signal. For example, it may be a CRS, a CSI-RS, a PRS, a DRS, or a MBSFN RS, or another signal capable of providing synchronization information, which is not limited by the present invention.

The embodiment of the present invention does not limit the scenarios of the first synchronization reference signal and the second synchronization reference signal. For example, for a multi-carrier scenario, if multiple carriers are deployed on the synchronization source base station, the corresponding first synchronization reference signal and/or second synchronization reference signal on different carriers may be the same or different. For another example, for a switching scenario, the synchronization source base station may be based on the traffic load of the bearer and/or Select the switch for the interference situation and/or interference to other base stations. In order to ensure that the switch of the synchronization source base station does not affect the synchronization base station, the synchronization source base station can configure and transmit the first synchronization reference signal and the second synchronization reference signal whether it is in an open state or an off state. The invention is not limited thereto.

7 is a schematic diagram of a method of inter-station synchronization in accordance with another embodiment of the present invention. The method shown in Figure 7 includes:

701. The synchronization base station receives the first synchronization reference signal and the second synchronization reference signal sent by the synchronization source base station, where the pattern of the first synchronization reference signal is different from the pattern of the second synchronization reference signal.

702. The synchronization base station performs time synchronization with the synchronization source base station according to the first synchronization reference signal, and performs frequency synchronization with the synchronization source base station according to the second synchronization reference signal.

Specifically, after receiving the first synchronization reference signal and the second synchronization reference signal with different patterns, the synchronization base station first parses the pattern of the first synchronization reference signal and the pattern of the second synchronization reference signal, and further determines which reference signal It is more suitable for time synchronization with the synchronization source base station, and which reference signal is more suitable for frequency synchronization with the synchronization source base station.

Optionally, as an embodiment, if the synchronization base station recognizes that time synchronization with the synchronization source base station according to the first synchronization reference signal can meet the requirement of time synchronization, performing frequency synchronization with the synchronization source base station according to the second synchronization reference signal may be used. The synchronization base station performs time synchronization with the synchronization source base station according to the first synchronization reference signal and performs frequency synchronization with the synchronization source base station according to the second synchronization reference signal.

Optionally, as another embodiment, if the synchronization base station recognizes that time synchronization with the synchronization source base station according to the combination of the first synchronization reference signal and the second synchronization reference signal can meet the requirement of time synchronization, and according to the second synchronization reference The frequency synchronization of the signal with the synchronization source base station can meet the requirement of frequency synchronization, and then the synchronization base station performs time synchronization with the synchronization source base station according to the first synchronization reference signal and the second synchronization reference signal, and according to the second synchronization reference signal. Frequency synchronization with the synchronization source base station. It should be noted that the combination of the first synchronization reference signal and the second synchronization reference signal mentioned herein may be all of the first reference signal and all of the second reference signal, and may be all of the first reference signal and the second reference signal. The part may also be a part of the first reference signal and all or part of the second reference signal, which is not limited by the present invention. Optionally, in another embodiment, the synchronization base station may perform time synchronization with the synchronization source base station according to the first synchronization reference signal, and perform synchronization with the synchronization source base station according to the first synchronization reference signal and the second synchronization reference signal. Frequency synchronization.

Optionally, as another embodiment, if the synchronization base station recognizes that time synchronization with the synchronization source base station according to the combination of the first synchronization reference signal and the second synchronization reference signal can meet the requirement of time synchronization, and according to the first synchronization reference The frequency synchronization between the signal and the second synchronization reference signal and the synchronization source base station can meet the requirement of frequency synchronization, and then the synchronization base station performs time synchronization with the synchronization source base station according to the first synchronization reference signal and the second synchronization reference signal and according to The first synchronization reference signal and the second synchronization reference signal are frequency synchronized with the synchronization source base station.

It should be noted that even if the source base station configures the first synchronization reference signal according to the synchronization requirement of the synchronization base station for time synchronization, the second synchronization reference signal is configured according to the synchronization requirement of the synchronization base station for frequency synchronization. The synchronization base station does not necessarily have to perform time synchronization with the synchronization source base station according to the first synchronization reference signal, and performs frequency synchronization with the synchronization source base station according to the second synchronization reference signal. Rather, the synchronous base station selects whether to synchronize time with the synchronization source base station according to the combination of the first synchronization reference signal or the second synchronization reference signal or the two synchronization reference signals according to the synchronization performance. Similar to the frequency synchronization of the synchronization source base station. Moreover, at the same time, the synchronization source base station does not know which synchronization reference base station is time-synchronized or frequency-synchronized with the synchronization source base station.

Optionally, as another embodiment, the synchronous base station can receive the third synchronization reference signal in step 701, and the third synchronization reference signal can be understood as a superposition of the foregoing first synchronization reference signal and the second synchronization reference signal. Then, in step 702, the synchronization base station may first parse the third synchronization reference signal, and after decomposing the third synchronization reference signal into the first synchronization reference signal and the second synchronization reference signal, further according to the A synchronization reference signal and a second synchronization reference signal are time synchronized and frequency synchronized with the synchronization source base station. Alternatively, in step 702, the synchronization base station may perform time synchronization and frequency synchronization with the synchronization source base station directly according to the third synchronization reference signal. The distribution of the third synchronization reference signal described herein in one cycle is non-uniform, or the different time-frequency resources and/or sequence resources of the third synchronization reference signal in one cycle are not uniform.

Optionally, as another embodiment, before the step 701, the method may further include: the synchronization base station acquiring the pattern of the first synchronization reference signal and the pattern of the second synchronization reference signal.

Optionally, as another embodiment, the synchronization base station may directly acquire the first base station from the synchronization source base station. a pattern of synchronization reference signals and a pattern of the second synchronization reference signal.

Optionally, as another embodiment, the synchronization base station may acquire, from the synchronization source base station, a synchronization level of the synchronization source base station, and a mapping between the synchronization level and the pattern of the first synchronization reference signal and/or the pattern of the second synchronization reference signal. Alternatively, the synchronization base station may acquire the synchronization level of the synchronization source base station from the synchronization source base station, and obtain a mapping between the synchronization level and the pattern of the first synchronization reference signal and/or the pattern of the second synchronization reference signal from the base station manager or OAM. Relationship; or, the synchronization base station may acquire the synchronization level of the synchronization source base station from the synchronization source base station, and obtain a mapping relationship between the synchronization level and the pattern of the first synchronization reference signal and/or the pattern of the second synchronization reference signal from the standard pre-defined And determining, according to the synchronization level of the synchronization source base station and the mapping relationship, a pattern of the first synchronization reference signal and a pattern of the second synchronization reference signal.

Optionally, as another embodiment, the synchronization base station may obtain, by using the indication signaling sent by the synchronization source base station, a pattern of the first synchronization reference signal and a pattern of the second synchronization reference signal, or the mapping relationship and the synchronization source. The synchronization level of the base station, or the synchronization level of the synchronization source base station, where the indication signaling may be backhaul signaling, or may be air interface signaling, or may be other signaling forms, which is not limited by the present invention.

FIG. 8 is a schematic flow chart of a method for inter-station synchronization according to another embodiment of the present invention. The method shown in Figure 8 includes:

803. The synchronization source base station 801 generates a first synchronization reference signal and a second synchronization reference signal, and the pattern of the first synchronization reference signal is different from the pattern of the second synchronization reference signal.

804. The synchronization source base station 801 sends the first synchronization reference signal and the second synchronization reference signal to the synchronization base station 802.

805. The synchronization base station 802 performs time synchronization with the synchronization source base station 801 according to the first synchronization reference signal, and performs frequency synchronization with the synchronization source base station 801 according to the second synchronization reference signal.

Specifically, in step 803 of the embodiment of the present invention, reference may be made to the related description of FIG. 2, wherein the pattern of the first synchronization reference signal and the pattern of the second synchronization reference signal may be related to FIG. 3 to FIG. description. Step 805 in the embodiment of the present invention can be referred to the related description of FIG. To avoid repetition, we will not repeat them here.

Figure 9 is a block diagram of a base station in accordance with one embodiment of the present invention. The base station 900 shown in FIG. 9 includes: a generating unit 901, configured to generate a first synchronization reference signal and a second synchronization reference signal, the pattern of the first synchronization reference signal being different from the pattern of the second synchronization reference signal.

The sending unit 902 is configured to: generate the first synchronization reference signal generated by the generating unit 901, and the first The second synchronization reference signal is sent to the synchronization base station, so that the synchronization base station performs time synchronization with the base station according to the first synchronization reference signal and performs frequency synchronization with the base station according to the second synchronization reference signal.

Optionally, as an embodiment, the base station 900 may further include: a configuration unit, configured to configure a pattern of the first synchronization reference signal and a pattern of the second synchronization reference signal according to a synchronization requirement of the synchronization base station, so that the base station The 900 generates the first synchronization reference signal according to the pattern of the first synchronization reference signal, and generates the second synchronization reference signal according to the pattern of the second synchronization reference signal.

Optionally, in another embodiment, the base station 900 may further include: a receiving unit, configured to receive a pattern of the first synchronization reference signal and a pattern of the second synchronization reference signal configured by the base station manager or the OAM, so that The base station 900 generates the first synchronization reference signal according to the pattern of the first synchronization reference signal, and generates the second synchronization reference signal according to the pattern of the second synchronization reference signal.

Optionally, as another embodiment, the base station 900 may further include a receiving unit and a configuration unit. The receiving unit is configured to receive a mapping relationship between a synchronization level of the base station manager or the OAM configuration and a pattern of the first synchronization reference signal and/or a pattern of the second synchronization reference signal. The configuration unit is configured to configure a pattern of the first synchronization reference signal and a pattern of the second synchronization reference signal according to the mapping relationship and a synchronization level of the base station 900.

The base station 900 shown in FIG. 9 can implement the processes implemented by the synchronization source base station shown in the embodiments of FIG. 2 and FIG. 8. To avoid repetition, details are not described herein again.

Figure 10 is a block diagram of a base station in accordance with another embodiment of the present invention. The base station 1000 shown in Figure 10 includes:

The receiving unit 1001 is configured to receive the first synchronization reference signal and the second synchronization reference signal sent by the synchronization source base station, where the pattern of the first synchronization reference signal and the pattern of the second synchronization reference signal are different.

The processing unit 1002 is configured to perform time synchronization with the synchronization source base station according to the first synchronization reference signal received by the receiving unit 1001, and perform frequency synchronization with the synchronization source base station according to the second synchronization reference signal received by the receiving unit 1001.

Embodiments of the present invention pass a first synchronization reference signal and a second synchronization reference signal having different patterns The number is transmitted to the synchronization base station, so that the synchronization base station can synchronize with the synchronization source base station, and can simultaneously satisfy the requirements of time synchronization and frequency synchronization.

Optionally, as an embodiment, the receiving unit 1001 is further configured to acquire a pattern of the first synchronization reference signal and a pattern of the second synchronization reference signal.

Optionally, in another embodiment, the processing unit 1002 is further configured to perform time synchronization with the synchronization source base station according to the first synchronization reference signal and the second synchronization reference signal.

Optionally, in another embodiment, the processing unit 1002 is further configured to perform frequency synchronization with the synchronization source base station according to the first synchronization reference signal and the second synchronization reference signal.

The base station 1000 shown in FIG. 10 can implement the various processes implemented by the synchronous base station shown in the embodiment of FIG. 7 and FIG. 8. To avoid repetition, details are not described herein again.

Figure 11 is a block diagram of a base station in accordance with another embodiment of the present invention. The base station 1100 shown in Fig. 11 includes a processor 1101, a memory 1102, and a transceiver circuit 1103.

The processor 1101 generates a first synchronization reference signal and a second synchronization reference signal, the pattern of the first synchronization reference signal being different from the pattern of the second synchronization reference signal. The transceiver circuit 1103 sends the first synchronization reference signal and the second synchronization reference signal generated by the processor 1101 to the synchronization base station, so that the synchronization base station performs time synchronization with the base station according to the first synchronization reference signal and according to the second synchronization. The reference signal is frequency synchronized with the base station.

The various components in base station 1100 are coupled together by a bus system 1104, which in addition to the data bus includes a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are labeled as bus system 1104 in FIG.

Optionally, as an embodiment, the processor 1101 configures a pattern of the first synchronization reference signal and a pattern of the second synchronization reference signal according to a synchronization requirement of the synchronization base station, so that the processor 1101 is configured according to the first synchronization reference signal. The pattern generates the first synchronization reference signal and generates the second synchronization reference signal according to the pattern of the second synchronization reference signal.

Optionally, as another embodiment, the transceiver circuit 1103 receives the pattern of the first synchronization reference signal and the pattern of the second synchronization reference signal configured by the base station manager or the OAM, so that the processor 1101 is configured according to the first synchronization reference. The pattern of the signal generates the first synchronization reference signal and generates the second synchronization reference signal according to the pattern of the second synchronization reference signal. Optionally, as another embodiment, the transceiver circuit 1103 receives a mapping relationship between a synchronization level of the base station manager or the OAM configuration and a pattern of the first synchronization reference signal and/or a pattern of the second synchronization reference signal. The processor 1101 configures a pattern of the first synchronization reference signal and a pattern of the second synchronization reference signal according to the mapping relationship and the synchronization level of the base station 1100.

The method disclosed in the foregoing embodiment of the present invention may be applied to the processor 1101 or implemented by the processor 1101. The processor 1101 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 1101 or an instruction in the form of software. The processor 1101 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or the like. Programmable logic device, discrete gate or transistor logic device, logic block diagram. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in the embodiment of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory 1102, and the processor 1101 reads the information in the memory 1102 and completes the steps of the above method in conjunction with its hardware.

The base station 1100 can implement various processes implemented by the synchronization source base station in the embodiments of FIG. 2 and FIG. 8. To avoid repetition, details are not described herein again.

Figure 12 is a block diagram of a base station in accordance with another embodiment of the present invention. The base station 1200 shown in FIG. 12 includes a processor 1201, a memory 1202, and a transceiver circuit 1203.

The transceiver circuit 1203 receives the first synchronization reference signal and the second synchronization reference signal sent by the synchronization source base station, and the pattern of the first synchronization reference signal is different from the pattern of the second synchronization reference signal. The processor 1201 performs time synchronization with the synchronization source base station according to the first synchronization reference signal received by the transceiver circuit 1203, and performs frequency synchronization with the synchronization source base station according to the second synchronization reference signal received by the transceiver circuit 1203.

The embodiment of the invention transmits the first synchronization reference signal and the second synchronization reference signal with different patterns to the synchronization base station, so that the synchronization base station can synchronize with the synchronization source base station, and can simultaneously meet the requirements of time synchronization and frequency synchronization. The various components in base station 1200 are coupled together by a bus system 1204, which in addition to the data bus includes a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are labeled as bus system 1204 in FIG.

Optionally, as an embodiment, the transceiver circuit 1203 acquires a pattern of the first synchronization reference signal and a pattern of the second synchronization reference signal.

Optionally, as another embodiment, the processor 1201 performs time synchronization with the synchronization source base station according to the first synchronization reference signal and the second synchronization reference signal.

Optionally, as another embodiment, the processor 1201 performs frequency synchronization with the synchronization source base station according to the first synchronization reference signal and the second synchronization reference signal.

The method disclosed in the foregoing embodiments of the present invention may be applied to the processor 1201 or implemented by the processor 1201. Processor 1201 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 1201 or an instruction in the form of software. The processor 1201 described above may be a general purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a discrete gate or transistor logic device, or a logic block diagram. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in the embodiment of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in memory 1202, and processor 1201 reads the information in memory 1202 and, in conjunction with its hardware, performs the steps of the above method.

The base station 1200 can implement various processes implemented by the synchronous base station in the embodiments of FIG. 7 and FIG. 8. To avoid repetition, details are not described herein again.

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

It will be apparent to those skilled in the art that for the convenience and cleanness of the description, the specific working processes of the systems, devices and units described above may be referred to the corresponding embodiments in the foregoing method embodiments. The process is not repeated here.

In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise. The components displayed for the unit may or may not be physical units, ie may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.

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

The functions, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention, which is essential to the prior art or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, including The instructions are used to make a computer device (which may be a personal computer, a server, and the storage medium includes: a USB flash drive, a mobile hard disk, a Read-Only Memory (ROM), and a random access memory (Random Access Memory). Various media that can store program code, such as RAM), disk or optical disk.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Claims

Rights request

A method for synchronizing between stations, characterized in that the method comprises:

The synchronization source base station generates a first synchronization reference signal and a second synchronization reference signal, and the pattern of the first synchronization reference signal and the pattern of the second synchronization reference signal are different;

The synchronization source base station transmits the first synchronization reference signal and the second synchronization reference signal to a synchronization base station, so that the synchronization base station performs time synchronization with the synchronization source base station according to the first synchronization reference signal and according to The second synchronization reference signal is frequency synchronized with the source base station.

The method according to claim 1, wherein the method further comprises: configuring, by the synchronization source base station, a pattern of the first synchronization reference signal and the second according to a synchronization requirement of the synchronization base station Synchronizing a pattern of reference signals, such that the synchronization source base station generates the first synchronization reference signal according to a pattern of the first synchronization reference signal, and generates the second synchronization reference signal according to a pattern of the second synchronization reference signal .

The method according to claim 1, wherein the method further comprises: the synchronization source base station receiving a pattern of the first synchronization reference signal sent by the base station manager or the operation management and maintenance OAM, and the And synchronizing the pattern of the reference signals, so that the synchronization source base station generates the first synchronization reference signal according to the pattern of the first synchronization reference signal, and generates the second synchronization reference according to the pattern of the second synchronization reference signal a signal, wherein a pattern of the first synchronization reference signal and a pattern of the second synchronization reference signal are configured by the base station manager or the OAM.

The method according to claim 1, wherein the method further comprises: the synchronization source base station receiving a pattern and/or a second synchronization of a synchronization level and a first synchronization reference signal sent by the base station manager or the OAM a mapping relationship between patterns of reference signals;

The synchronization source base station configures a pattern of the first synchronization reference signal and a pattern of the second synchronization reference signal according to the mapping relationship, so that the synchronization source base station generates the according to a pattern of the first synchronization reference signal. a first synchronization reference signal, and generating the second synchronization reference signal according to a pattern of the second synchronization reference signal.

The method according to any one of claims 1 to 4, wherein the pattern of the first synchronization reference signal and the pattern of the second synchronization reference signal are different, including:

The pattern of the first synchronization reference signal and the pattern of the second synchronization reference signal are at least one different from: a period, a time-frequency resource, and a sequence resource.

A method for synchronizing between stations, characterized in that the method comprises: The synchronization base station receives the first synchronization reference signal and the second synchronization reference signal sent by the synchronization source base station, where the pattern of the first synchronization reference signal and the pattern of the second synchronization reference signal are different; The synchronization reference signal is time synchronized with the synchronization source base station and frequency synchronized with the synchronization source base station according to the second synchronization reference signal.

The method according to claim 6, wherein the method further comprises: acquiring, by the synchronization base station, a pattern of the first synchronization reference signal and a pattern of the second synchronization reference signal.

The method according to claim 6 or 7, wherein the performing time synchronization with the synchronization source base station according to the first synchronization reference signal comprises:

Time synchronization with the synchronization source base station based on the first synchronization reference signal and the second synchronization reference signal.

The method according to any one of claims 6 to 8, wherein the performing frequency synchronization with the synchronization source base station according to the second synchronization reference signal comprises:

Frequency synchronization with the synchronization source base station based on the first synchronization reference signal and the second synchronization reference signal.

A base station, the base station comprising:

a generating unit, configured to generate a first synchronization reference signal and a second synchronization reference signal, where a pattern of the first synchronization reference signal and a pattern of the second synchronization reference signal are different;

a sending unit, configured to send the first synchronization reference signal and the second synchronization reference signal generated by the generating unit to a synchronization base station, so that the synchronization base station performs with the base station according to the first synchronization reference signal Time synchronization and frequency synchronization with the base station based on the second synchronization reference signal.

The base station according to claim 10, wherein the base station further comprises: a configuration unit, configured to configure a pattern of the first synchronization reference signal and the second according to a synchronization requirement of the synchronization base station And synchronizing the pattern of the reference signal, so that the base station generates the first synchronization reference signal according to the pattern of the first synchronization reference signal, and generates the second synchronization reference signal according to the pattern of the second synchronization reference signal.

The base station according to claim 10, wherein the base station further comprises: a receiving unit, configured to receive a pattern of the first synchronization reference signal sent by the base station manager or the operation management and maintenance OAM, and the And synchronizing the pattern of the reference signal, so that the base station generates the first synchronization reference signal according to the pattern of the first synchronization reference signal, and generates the second synchronization reference signal according to the pattern of the second synchronization reference signal, The first synchronous reference letter The pattern of the number and the pattern of the second synchronization reference signal are configured by the base station manager or the OAM.

The base station according to claim 10, wherein the base station further comprises: a receiving unit, configured to receive a pattern and/or a second synchronization of a synchronization level and a first synchronization reference signal sent by the base station manager or the OAM a mapping relationship between patterns of reference signals;

a configuration unit, configured to configure a pattern of the first synchronization reference signal and a pattern of the second synchronization reference signal according to the mapping relationship, so that the base station generates the first according to a pattern of the first synchronization reference signal Synchronizing the reference signal and generating the second synchronization reference signal according to the pattern of the second synchronization reference signal.

The base station according to any one of claims 10 to 13, wherein the pattern of the first synchronization reference signal and the second synchronization reference signal are different, including:

A base station, the base station comprising:

a receiving unit, configured to receive a first synchronization reference signal and a second synchronization reference signal sent by the synchronization source base station, where a pattern of the first synchronization reference signal and a pattern of the second synchronization reference signal are different;

a processing unit, configured to perform time synchronization with the synchronization source base station according to the first synchronization reference signal received by the receiving unit, and according to the second synchronization reference signal received by the receiving unit and the synchronization source base station Perform frequency synchronization.

The base station according to claim 15, wherein the receiving unit is further configured to acquire a pattern of the first synchronization reference signal and a pattern of the second synchronization reference signal.

The base station according to claim 15 or 16, wherein the processing unit is further configured to:

The base station according to any one of claims 15 to 17, wherein the processing unit is further configured to: