WO2018058445A1

WO2018058445A1 - Communication method and apparatus

Info

Publication number: WO2018058445A1
Application number: PCT/CN2016/100853
Authority: WO
Inventors: 魏冬冬; 张长
Original assignee: 华为技术有限公司
Priority date: 2016-09-29
Filing date: 2016-09-29
Publication date: 2018-04-05
Also published as: CN109792585B; CN109792585A

Abstract

Provided are a communication method and apparatus. The method comprises: a terminal determining a system bandwidth according to a received physical broadcast channel (PBCH) (201); and the terminal determining the duration of an extended discovery signal according to the system bandwidth and a mapping relationship between the system bandwidth and the duration of the extended discovery signal (202).

Description

Communication method and device

Technical field

The present application relates to the field of communications technologies, and in particular, to a communication method and apparatus.

Background technique

In order to achieve the most efficient use of mobile network resources, the 3GPP (3rd Generation Partnership Project) proposes MBMS (Multimedia Broadcast Multicast Service). MBMS refers to a point-to-multipoint service in which a data source simultaneously transmits data to multiple users, and realizes network resource sharing, including core network and access network resource sharing, especially air interface resources.

In the current LTE (Long Term Evolution) protocol, 10 ms is defined as one radio frame, and each radio frame includes 10 subframes, each subframe has a duration of 1 ms, and the subframe is used as a basic scheduling time unit. The unicast service and the broadcast service are multiplexed in a time-division multiplex manner, that is, the unicast service and the broadcast service occupy different subframes, because the network needs to support the unicast service and the multimedia broadcast service (hereinafter referred to as the broadcast service). The subframe carrying the broadcast service is referred to as an MBSFN (Multimedia Broadcast multicast service Single Frequency Network) subframe.

In order to further enhance the performance of the MBMS, the LTE release-14 is discussed for the MBMS enhancement. One of the objectives of the MBMS enhancement is to increase the number of MBSFN subframes in a radio frame. For example, the carrier can be configured as a 100% MBSFN subframe. .

For the case where the carrier is configured as a 100% MBSFN subframe, it is necessary to periodically use at least one subframe to carry an extended discovery signal such as a synchronization signal, a broadcast message, a system message block, or the like. The number of subframes that specifically transmit the extended discovery signal needs to be determined according to the system bandwidth, so the duration of the extended discovery signal is different under different system bandwidths. Currently, in the case where the carrier is configured as a 100% MBSFN subframe, there is no clear solution for how to notify the terminal of the duration of the extended discovery signal.

Summary of the invention

The embodiment of the present application provides a communication method and apparatus, to implement, in a case where a carrier is configured as a 100% MBSFN subframe, to notify a terminal of a duration of transmitting an extended discovery signal.

In a first aspect, an embodiment of the present application provides a communication method, including:

The terminal determines the system bandwidth according to the received physical broadcast channel PBCH;

The terminal determines a duration of the extended discovery signal according to a mapping relationship between the system bandwidth and a system bandwidth and a duration of the extended discovery signal.

After the terminal determines the system bandwidth, the terminal can determine the duration of the extended discovery signal according to the mapping between the system bandwidth and the duration of the extended discovery signal, thereby implementing the carrier configuration as 100% MBSFN. In the case of a frame, the duration of the extended discovery signal is transmitted to the terminal through the system bandwidth.

Optionally, the PBCH includes period indication information.

The method further includes:

The terminal determines a transmission period of the extended discovery signal according to the period indication information.

Optionally, the period indication information occupies N bits in the reserved bits of the PBCH, where N is a positive integer greater than 0.

Optionally, the method further includes:

And determining, by the terminal, the subframe used for the multimedia broadcast multicast single frequency network MBSFN transmission in the transmission period indicated by the period indication information according to the period indication information and the duration of the extended discovery signal.

Optionally, the extended discovery signal is transmitted in a non-MBSFN subframe in a transmission period indicated by the period indication information.

Optionally, the extended discovery signal includes one or more of the following:

Primary synchronization signal

Secondary synchronization signal

Main information block

System information block;

Cell reference signal;

Channel status information reference signal.

In a second aspect, an embodiment of the present application provides a communications apparatus, where the apparatus includes:

a transceiver unit, configured to determine a system bandwidth according to the received physical broadcast channel PBCH;

And a processing unit, configured to determine a duration of the extended discovery signal according to a mapping relationship between the system bandwidth and a duration of the system bandwidth and the extended discovery signal.

Optionally, the PBCH includes period indication information.

The processing unit is further configured to:

Determining a transmission period of the extended discovery signal according to the period indication information.

Optionally, the processing unit is further configured to:

Determining, according to the period indication information and the duration of the extended discovery signal, a subframe for a multimedia broadcast multicast single frequency network MBSFN transmission in a transmission period indicated by the period indication information.

Primary synchronization signal

Secondary synchronization signal

Main information block

System information block;

Cell reference signal;

Channel status information reference signal.

In a third aspect, an embodiment of the present application provides a communication device, where the device includes: a transceiver, a processor, and a memory;

The memory is for storing computer instructions;

The transceiver is configured to determine a system bandwidth according to the received physical broadcast channel PBCH;

The processor is configured to read a computer instruction stored in the memory to determine a duration of the extended discovery signal according to a mapping relationship between the system bandwidth and a duration of the system bandwidth and the extended discovery signal.

Optionally, the PBCH includes period indication information.

The processor is further configured to:

Optionally, the processor is further configured to:

Primary synchronization signal

Secondary synchronization signal

Main information block

System information block;

Cell reference signal;

Channel status information reference signal.

In a fourth aspect, an embodiment of the present application provides a communication method, where the method includes:

The access network device determines the duration indication information of the extended transmission signal;

The access network device sends the duration indication information to the terminal.

Through the foregoing method, the access network device sends the duration indication information to the terminal, thereby indicating to the terminal the duration of the extended discovery signal, thereby implementing the carrier configuration as 100% MBSFN. In the case of a subframe, the terminal is enabled to determine the duration of the extended discovery signal.

Optionally, the access network device sends the duration indication information to the terminal, including:

The access network device sends the duration indication information to the terminal through a physical broadcast channel PBCH.

Optionally, the access network device sends the duration indication information to the terminal by using the PBCH, including:

The access network device sends the duration indication information by M bits in the reserved bits of the PBCH, where M is a positive integer greater than 0; or

The access network device sends the duration indication information by using a preset field of the physical hybrid automatic retransmission indication channel PHICH in the PBCH.

Optionally, the method further includes:

The access network device sends periodic indication information to the terminal through the PBCH; the period indication information is used to indicate a sending period of the extended discovery signal.

In a fifth aspect, an embodiment of the present application provides a communications apparatus, including:

a processing unit, configured to determine duration indication information of the extended transmission signal;

And a transceiver unit, configured to send the duration indication information to the terminal.

Optionally, the transceiver unit is specifically configured to:

The duration indicator information is sent to the terminal through the physical broadcast channel PBCH.

Optionally, the transceiver unit is specifically configured to:

Transmitting the duration indication information by M bits in the reserved bits of the PBCH, where M is a positive integer greater than 0; or

The duration indicator information is sent by a preset field of the physical hybrid automatic retransmission indication channel PHICH in the PBCH.

Optionally, the transceiver unit is further configured to:

The period indication information is sent to the terminal by using the PBCH, where the period indication information is used to indicate a transmission period of the extended discovery signal.

In a sixth aspect, an embodiment of the present application provides a communications apparatus, including:

a processor, configured to determine duration indication information of the extended transmission signal;

And a transceiver, configured to send the duration indication information to the terminal.

Optionally, the transceiver is specifically configured to:

Optionally, the transceiver is further configured to:

In a seventh aspect, the embodiment of the present application provides a communication method, where the method includes:

Receiving, by the terminal, the duration indication information sent by the access network device;

The terminal determines, according to the duration indication information, a duration of the extended discovery signal.

Optionally, the terminal receives the duration indication information sent by the access network device, including:

The terminal receives the duration indication information through a physical broadcast channel PBCH.

Optionally, the terminal receives the duration indication information by using the PBCH, including:

The terminal receives the duration indication information by M bits in the reserved bits of the PBCH, where M is a positive integer greater than 0; or

The terminal receives the duration indication information by using a preset field of the physical hybrid automatic retransmission indication channel PHICH in the PBCH.

Optionally, the method further includes:

And receiving, by the PBCH, the period indication information sent by the access network device, where the period indication information is used to indicate a sending period of the extended discovery signal.

In an eighth aspect, an embodiment of the present application provides a communications apparatus, including:

a transceiver unit, configured to receive duration indication information sent by the access network device;

And a processing unit, configured to determine, according to the duration duration indication information, a duration of the extended discovery signal.

Optionally, the transceiver unit is specifically configured to:

The duration indicator information is received through a physical broadcast channel PBCH.

Optionally, the transceiver unit is specifically configured to:

Receiving, by the M bits of the reserved bits of the PBCH, the duration indicator information, where M is a positive integer greater than 0; or

The duration indicator information is received by a preset field of the physical hybrid automatic retransmission indication channel PHICH in the PBCH.

Optionally, the transceiver unit is further configured to:

And receiving the period indication information sent by the access network device by using the PBCH; the period indication information is used to indicate a sending period of the extended discovery signal.

In a ninth aspect, the embodiment of the present application provides a communications apparatus, including:

The transceiver is configured to receive the duration indication information sent by the access network device;

And a processor, configured to determine, according to the duration indicator information, a duration of the extended discovery signal.

Optionally, the transceiver unit is specifically configured to:

Optionally, the transceiver is specifically configured to:

Optionally, the transceiver is further configured to:

In a tenth aspect, the embodiment of the present application provides a communication method, where the method includes:

The access network device determines protection bandwidth indication information; the protection bandwidth indication information indicates wireless The configuration of the protection bandwidth between the non-multicast multicast transmission resource and the multicast multicast transmission resource in the target subframe of the frame;

The access network device sends the protection bandwidth indication information to the terminal through a physical broadcast channel PBCH.

Through the foregoing method, the access network device indicates, by using the protection bandwidth indication information, whether the fixed protection bandwidth exists between the non-multicast multicast transmission resource and the multicast multicast transmission resource, or indicates the non-multicast multicast transmission resource and The size of the protection bandwidth between multicast multicast transmission resources enables the terminal to receive signals at an accurate resource location.

Optionally, the access network device sends the protection bandwidth indication information to the terminal by using the PBCH, including:

The access network device sends the protection bandwidth indication information by K bits in the reserved bits of the PBCH, where K is a positive integer greater than 0; or

The access network device sends the protection bandwidth indication information by using a preset field of the physical hybrid automatic retransmission indication channel PHICH in the PBCH.

Optionally, the protection bandwidth indication information indicates whether a fixed protection bandwidth exists between the non-multicast multicast transmission resource and the multicast multicast transmission resource in the target subframe; or

The protection bandwidth indication information indicates a size of a protection bandwidth between the non-multicast multicast transmission resource and the multicast multicast transmission resource in the target subframe.

In an eleventh aspect, an embodiment of the present application provides a communications apparatus, where the apparatus includes:

a processing unit, configured to determine protection bandwidth indication information; the protection bandwidth indication information indicates a configuration of a protection bandwidth between a non-multicast multicast transmission resource and a multicast multicast transmission resource in a target subframe of the radio frame;

And a transceiver unit, configured to send the protection bandwidth indication information to the terminal by using a physical broadcast channel PBCH.

Optionally, the transceiver unit is specifically configured to:

Transmitting the protection bandwidth indication information by K bits in the reserved bits of the PBCH, where K is a positive integer greater than 0; or

The protection bandwidth indication information is sent by a preset field of the physical hybrid automatic retransmission indication channel PHICH in the PBCH.

In a twelfth aspect, the embodiment of the present application provides a communication device, where the device includes:

a processor, configured to determine protection bandwidth indication information, where the protection bandwidth indication information indicates a configuration of a protection bandwidth between the non-multicast multicast transmission resource and the multicast multicast transmission resource in the target subframe of the radio frame;

And a transceiver, configured to send the protection bandwidth indication information to the terminal by using a physical broadcast channel PBCH.

Optionally, the transceiver is specifically configured to:

In a thirteenth aspect, the embodiment of the present application provides a communication method, where the method includes:

Receiving, by the terminal, the protection bandwidth indication information sent by the access network device by using a physical broadcast channel PBCH;

The terminal determines, according to the protection bandwidth indication information, a protection bandwidth between the non-multicast multicast transmission resource and the multicast multicast transmission resource in the target subframe.

Through the foregoing method, the terminal determines, by using the protection bandwidth indication information, whether there is a fixed protection bandwidth between the non-multicast multicast transmission resource and the multicast multicast transmission resource, or determines the non-multicast multicast transmission resource. The size of the protection bandwidth between the source and multicast multicast transmission resources enables signal reception at an accurate resource location.

Optionally, the terminal receives the protection bandwidth indication information by using a PBCH, including:

Receiving, by the terminal, the protection bandwidth indication information by K bits in the reserved bits of the PBCH; or

The terminal receives the protection bandwidth indication information by using a preset field of a physical hybrid automatic retransmission indication channel PHICH in the PBCH.

In a fourteenth aspect, the embodiment of the present application provides a communications apparatus, including:

a transceiver unit, configured to receive, by using a physical broadcast channel PBCH, protection bandwidth indication information sent by an access network device;

And a processing unit, configured to determine, according to the protection bandwidth indication information, a protection bandwidth between the non-multicast multicast transmission resource and the multicast multicast transmission resource in the target subframe.

Optionally, the transceiver unit is specifically configured to:

Receiving the protection bandwidth indication information by K bits in the reserved bits of the PBCH; or

And receiving, by the preset field of the physical hybrid automatic retransmission indication channel PHICH in the PBCH, the protection bandwidth indication information.

In a fifteenth aspect, the embodiment of the present application provides a communications apparatus, including:

a transceiver, configured to receive, by using a physical broadcast channel PBCH, a protection bandwidth sent by an access network device Indication information;

And a processor, configured to determine, according to the protection bandwidth indication information, a protection bandwidth between the non-multicast multicast transmission resource and the multicast multicast transmission resource in the target subframe.

Optionally, the transceiver is specifically configured to:

DRAWINGS

1 is a schematic structural diagram of a communication system to which an embodiment of the present application is applied;

2 is a schematic flowchart of a communication method according to an embodiment of the present application;

FIG. 3 is a schematic flowchart of a communication method according to an embodiment of the present application;

4 is a schematic flowchart of a communication method according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a communication apparatus according to an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a communication apparatus according to an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a communication apparatus according to an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a communication apparatus according to an embodiment of the present application;

FIG. 9 is a schematic structural diagram of a communication apparatus according to an embodiment of the present application;

FIG. 10 is a schematic structural diagram of a communication apparatus according to an embodiment of the present application;

FIG. 11 is a schematic structural diagram of a communication apparatus according to an embodiment of the present application;

FIG. 12 is a schematic structural diagram of a communication apparatus according to an embodiment of the present application;

FIG. 13 is a schematic structural diagram of a communication apparatus according to an embodiment of the present application;

FIG. 14 is a schematic structural diagram of a communication apparatus according to an embodiment of the present application.

detailed description

The embodiments of the present application are described in detail below with reference to the accompanying drawings.

Hereinafter, some of the terms in the present application will be explained to be understood by those skilled in the art.

1) A terminal, also called a User Equipment (UE), is a device that provides voice and/or data connectivity to a user, for example, a handheld device with a wireless connection function, an in-vehicle device, and the like. Common terminals include, for example, mobile phones, tablets, notebook computers, PDAs, mobile internet devices (MIDs), wearable devices such as smart watches, smart bracelets, pedometers, and the like.

2) An access network device, also referred to as a base station, is a device that accesses a terminal to a wireless network, including but not limited to: an evolved Node B (eNB), a radio network controller (radio network) Controller, RNC), Node B (NB), Base Station Controller (BSC), Base Transceiver Station (BTS), Home Base Station (for example, Home evolved NodeB, or Home Node B, HNB), BaseBand Unit (BBU). In addition, a Wifi Access Point (AP) or the like may also be included.

3) In the embodiment of the present application, a subframe that carries a broadcast multicast service in a radio frame is referred to as an MBSFN subframe, and a subframe that does not carry a broadcast multicast service is referred to as a non-MBSFN subframe.

4) In the embodiment of the present application, a resource carrying a multicast multicast service in one subframe is referred to as a multicast multicast transmission resource, and a resource not carrying a multicast multicast service is referred to as a non-multicast multicast transmission resource. .

5) In the embodiment of the present application, the extended discovery signal includes one or more of the following:

Primary synchronization signal

Secondary synchronization signal

Main information block

System information block;

Cell reference signal;

Channel status information reference signal.

Of course, the extended discovery signal is not limited to the above signals, and may also include other signals, which are not illustrated one by one.

Please refer to FIG. 1 , which is a schematic structural diagram of a communication system to which an embodiment of the present application is applied. As shown in Figure 1, the description of each network element and interface in Figure 1 is as follows:

MME (Mobility Management Entity)/S-GW (Serving GateWay): The MME is a key control node in the LTE (Long Term Evolution) system. It belongs to the core network element and is mainly responsible for the letter. The processing part, the control plane function, includes access control, mobility management, attach and detach, session management functions, and gateway selection. The S-GW is an important network element of the core network in LTE. It is mainly responsible for the user plane function of user data forwarding, that is, routing and forwarding of data packets under the control of the MME.

eNB (evolved Node B): The eNB may be a base station in LTE, and is mainly responsible for radio resource management, QoS (Quality of Service) management, data compression, and encryption on the air interface side. To the core network side, the eNB is mainly responsible for forwarding control plane signaling to the MME and forwarding user plane service data to the S-GW.

UE (User Equipment): The UE may have the function of accessing the network side through the access network device, such as an eNB, in the LTE, or may have the wireless transmission between the access device and the access device in other networks. The UE can perform voice or data service transmission.

S1 interface: is a standard interface between the eNB and the core network. The eNB is connected to the MME through the S1-MME interface, and is used for control signaling transmission; the eNB is connected to the S-GW through the S1-U interface, and is used for transmission of user data. The S1-MME interface and the S1-U interface are collectively referred to as an S1 interface.

The X2 interface is a standard interface between the eNB and the eNB, and is used to implement interworking between the base stations.

Uu interface: The Uu interface is a radio interface between the UE and the base station, and the UE accesses the network through the Uu interface.

Based on the above discussion, please refer to FIG. 2 , which is a schematic flowchart of a communication method according to an embodiment of the present application.

As shown in FIG. 2, the method may include the following steps:

Step 201: The terminal determines the system bandwidth according to the received physical broadcast channel.

Step 202: The terminal determines a duration of the extended discovery signal according to a mapping relationship between the system bandwidth and a duration of the system bandwidth and the extended discovery signal.

In step 201, the terminal may determine the system bandwidth according to the system bandwidth indication in the physical broadcast channel (PBCH). For details, refer to the provisions in the existing communication standard, and details are not described herein again.

It should be noted that the terminal may be a terminal in an idle state or a terminal that is not connected to the network.

In step 202, after determining the system bandwidth, the terminal may determine the duration of the extended discovery signal in the mapping relationship and the system bandwidth mapping according to the mapping relationship between the system bandwidth and the duration of the extended discovery signal. The extension finds the duration of the signal.

In the case where the carrier is configured as a 100% MBSFN subframe, the extended discovery signal can be used to indicate that the terminal accesses the network and acquires system messages and the like. For the specific content of the extended discovery signal, reference may be made to the foregoing description, wherein when the extended discovery signal includes a primary synchronization signal, a secondary synchronization signal, and a primary information block, the primary synchronization signal, the secondary synchronization signal, and the primary information block may be located in the extended discovery signal. The embodiment of the present application does not limit the transmission in the first subframe of the duration, or a plurality of subframes that are specified in advance. Further, the extended discovery signal may be transmitted in a non-MBSFN subframe in the extended discovery signal transmission period.

The mapping relationship between the system bandwidth and the duration of the extended discovery signal may be pre-agreed by the terminal and the access network device; the mapping relationship between the system bandwidth and the duration of the extended discovery signal may also be pre-defined in the communication protocol. The embodiment is not limited thereto.

The mapping between the system bandwidth and the duration of the extended discovery signal can take many forms. For example, the mapping relationship between the system bandwidth and the duration of the extended discovery signal can be as shown in Table 1.

Table 1

系统带宽System bandwidth	1.4M1.4M	3M3M	5M5M	10M10M	15M15M	20M20M
持续时长Duration	3个3	2个2	1个1	1个1	1个1	1个1

Subframe

With reference to Table 1, when the terminal determines that the system bandwidth is 5 M, the duration of the extended discovery signal is determined to be one subframe duration according to the determined system bandwidth and the mapping relationship in Table 1. Of course, Table 1 is only an example, and the mapping relationship between the system bandwidth and the duration of the extended discovery signal may have other forms.

For another example, the mapping relationship between the system bandwidth and the duration of the extended discovery signal can be as shown in Table 2.

Table 2

Of course, Table 2 is only an example, and the mapping relationship between the system bandwidth and the duration of the extended discovery signal may have other forms, and details are not described herein again.

According to the foregoing method, after the terminal determines the system bandwidth, the duration of the extended discovery signal may be determined according to the mapping relationship between the system bandwidth and the duration of the system bandwidth and the extended discovery signal, thereby implementing the carrier configuration as 100% MBSFN. In the case of a frame, the duration of the extended discovery signal is transmitted to the terminal through the system bandwidth.

Optionally, in the embodiment of the present application, the access network device may further send the period indication information to the terminal by using the PBCH, where the period indication information is used to indicate a sending period of the extended discovery signal.

It should be noted that the transmission period of the extended discovery signal may be: 10ms, 40ms, 80ms, 160ms, etc., which is determined according to actual conditions, and details are not described herein again.

Optionally, the period indication information occupies N bits in the reserved bits of the PBCH, and N is a positive integer greater than 0. For example, there are two cases in which the transmission period of the extended discovery signal is: 10 ms and 40 ms. The period indication information occupies 1 bit of the reserved bits of the PBCH. When the value of the bit occupied by the period indication information is 1, it indicates that the transmission period of the extended discovery signal is 10 ms; when the value of the bit occupied by the period indication information is 0, it indicates that the transmission period of the extended discovery signal is 40 ms.

Of course, the above is only an example, and the period indication information may have other forms, and details are not described herein again.

It should be noted that the N-bits occupied by the periodic indication information in the reserved bits of the PBCH need to be pre-arranged by the access network device and the terminal, and the manner of the specific agreement is not limited in this embodiment.

After the terminal receives the period indication information through the PBCH, the terminal may determine the transmission period of the extended discovery signal according to the period indication information, so as to receive the extended discovery signal more accurately.

Further, after the terminal determines the period indication information and the duration of the extended discovery signal, the subframe for the MBSFN transmission in the period may be determined according to the period indication information and the duration of the extended discovery signal, thereby determining the MBSFN sub- Information such as the transmission time of the frame and location information.

In the embodiment of the present application, the access network device may also directly indicate to the terminal between the durations of the extended discovery signals. With reference to the foregoing description, please refer to FIG. 3, which is a schematic flowchart of a communication method according to an embodiment of the present application.

As shown in FIG. 3, the method may include the following steps:

Step 301: The access network device determines duration indication information of the extended transmission signal.

Step 302: The access network device sends the duration indication information to the terminal.

Step 303: The terminal receives the duration indication information sent by the access network device.

Step 304: The terminal determines, according to the duration indication information, a duration of the extended discovery signal.

In step 301, the access network device may determine the duration indicator information according to the duration of the extended transmission signal.

The duration indicator may occupy M bits, and M is a positive integer greater than 0. The duration of each of the M bits occupied by the indication information may be uniquely associated with the duration of an extended transmission signal, and the terminal is based on the duration. The value of the M bits occupied by the indication information may determine the duration of the extended transmission signal, so that the duration of the extended transmission signal may be indicated by the duration indication information.

It should be noted that the correspondence between the value of the M bits occupied by the duration indication information and the duration of the extended transmission signal may be pre-agreed by the access network device and the terminal.

In step 302, the access network device may send the duration indication information to the terminal through the PBCH. Specifically, in a possible implementation, the access network device may send the duration indication information by using M bits in the reserved bits of the PBCH.

In combination with the foregoing description, each value of the M bits occupied by the duration indication information may uniquely correspond to the duration of an extended transmission signal. For example, the duration indicator indicates that the information occupies 2 bits, and the mapping relationship between each value of the 2 bits occupied by the duration indication information and the duration of the extended discovery signal can be as shown in Table 3.

table 3

With reference to Table 3, when the terminal determines that the value of the 2 bits occupied by the duration indication information is 01, it may be determined that the duration of the extended discovery signal is 2 durations of the subframe. Of course, Table 3 is only an example, and the mapping relationship between the duration of the bit indicating that the information is occupied and the duration of the extended discovery signal may be other forms.

It should be noted that the M duration of the information indicating that the information is in the reserved bits of the PBCH needs to be pre-arranged by the access network device and the terminal.

In another possible implementation manner, the access network device may send the duration indication information by using a preset field of a Physical Hybrid ARQ Indicator Channel (PHICH) in the PBCH.

The preset field is a field existing in the PHICH, and the access network device indicates the duration of the extended discovery signal to the terminal by redefining the existing field in the PHICH as the duration indication information. For example, an access network device can redefine the phich-Resourc field in the PHICH to persistent The duration indicates the information. Of course, the access network device can also redefine other fields in the PHICH into persistent duration indication information, which are not illustrated one by one.

Optionally, in the embodiment of the present application, the access network device may further send the period indication information to the terminal by using the PBCH, where the period indication information is used to indicate a sending period of the extended discovery signal. The access network device indicates the transmission period of the extended discovery signal by transmitting the period indication information to the terminal, thereby improving the efficiency of the terminal receiving the extended discovery signal.

Correspondingly, in step 303, the terminal may receive the duration indication information sent by the access network device through the PBCH. Specifically, the terminal may receive the duration indication information by using M bits in the reserved bits of the PBCH. The terminal may further receive the duration indication information by using a preset field of the PHICH in the PBCH, where Referring to the previous description, it will not be described here.

The terminal can receive the continuous duration indication information sent by the access network device, and

While receiving the duration indication information, the period indication information sent by the access network device may also be received through the PBCH, thereby determining a transmission period of the extended discovery signal.

Through the foregoing method, the access network device indicates the duration of the extended discovery signal to the terminal by transmitting the duration indication information to the terminal, so that the terminal can determine the extended discovery in the case that the carrier is configured as a 100% MBSFN subframe. The duration of the signal.

When the carrier is configured as a 100% MBSFN subframe, when a frequency division multiplexing method is adopted, a signal of a synchronization signal, a broadcast signal, or the like can be transmitted by using a prior art scheme. For example, at least 6 resource blocks (RBs) between subframe 0 and subframe 5 in the radio frame are transmitted by using an existing scheme, and the remaining RBs are used for multicast multicast service transmission; all RBs in the remaining subframes Used for many Broadcast multicast service transmission (called multicast multicast transmission resource). At this time, for subframe 0 and subframe 5, the non-multicast multicast transmission resource and the multicast multicast transmission resource may adopt the same subcarrier interval/Cyclic Prefix (CP) length, or may use different subcarriers. Interval / CP length.

When a non-multicast multicast transmission resource and a multicast multicast transmission resource use the same subcarrier spacing/CP length in a subframe including a non-multicast multicast transmission resource and a multicast multicast transmission resource, the non-multicast group No protection bandwidth is required between broadcast transmission resources and multicast multicast transmission resources; non-multicast multicast transmission resources and multicast multicast in subframes including non-multicast multicast transmission resources and multicast multicast transmission resources When the transmission resource uses different subcarrier spacing/CP length, the protection bandwidth is required between the non-multicast multicast transmission resource and the multicast multicast transmission resource.

In the foregoing solution, the terminal cannot determine whether there is protection bandwidth between the non-multicast multicast transmission resource and the multicast multicast transmission resource, or cannot determine the protection bandwidth between the non-multicast multicast transmission resource and the multicast multicast transmission resource. Size, so that signal reception cannot be performed at an accurate resource location.

With reference to the foregoing description, please refer to FIG. 4, which is a schematic flowchart of a communication method according to an embodiment of the present application.

As shown in FIG. 4, the method may include the following steps:

Step 401: The access network device determines protection bandwidth indication information. The protection bandwidth indication information indicates a configuration of a protection bandwidth between the non-multicast multicast transmission resource and the multicast multicast transmission resource in the target subframe of the radio frame.

The target subframe is a subframe including a non-multicast multicast transmission resource and a multicast multicast transmission resource in the radio frame.

Step 402: The access network device sends the protection bandwidth indication information to the terminal through the PBCH.

Step 403: The terminal receives the protection bandwidth indication information sent by the access network device by using the PBCH.

Step 404: The terminal determines, according to the protection bandwidth indication information, a protection bandwidth between the non-multicast multicast transmission resource and the multicast multicast transmission resource in the target subframe.

In step 401, when there is a protection bandwidth between the non-multicast multicast transmission resource and the multicast multicast transmission resource in the target subframe, there are two possible ways to configure the protection bandwidth. In a possible manner, the protection bandwidth between the non-multicast multicast transmission resource and the multicast multicast transmission resource in the target subframe is large. The fixed-protection bandwidth is small; in another possible mode, the size of the protection bandwidth between the non-multicast multicast transmission resource and the multicast multicast transmission resource in the target subframe is not fixed, and is configured according to the actual situation, which is flexible protection. bandwidth.

In combination with the above description, when the size of the protection bandwidth between the non-multicast multicast transmission resource and the multicast multicast transmission resource in the target subframe is a fixed protection bandwidth, the protection bandwidth indication information may indicate the non-multicast group in the target subframe. Whether there is a fixed protection bandwidth between the broadcast transmission resource and the multicast multicast transmission resource; when the size of the protection bandwidth between the non-multicast multicast transmission resource and the multicast multicast transmission resource in the target subframe is not fixed, the protection bandwidth The indication information may indicate the size of the protection bandwidth between the non-multicast multicast transmission resource and the multicast multicast transmission resource in the target subframe.

In step 402, the access network device may send the protection bandwidth indication information to the terminal by using the following two implementations:

In a first implementation manner, the access network device sends the protection bandwidth indication information by using K bits in the reserved bits of the PBCH, where K is a positive integer greater than 0. The value of K is determined according to the actual situation and will not be described here.

For example, the size of the protection bandwidth between the non-multicast multicast transmission resource and the multicast multicast transmission resource in the target subframe is a fixed protection bandwidth. The protection bandwidth indication information occupies one bit of the reserved bits of the PBCH, and the mapping relationship between each value of the one bit occupied by the protection bandwidth indication information and the size of the protection bandwidth may be as shown in Table 4.

Table 4

Certainly, the above is only an example. When the value of the bit occupied by the protection bandwidth indication information is 1, the protection bandwidth may be 0. When the value of the protection bandwidth indication information is 0, the protection bandwidth may be fixed. Bandwidth mapping.

In a second implementation manner, the access network device passes the preset field of the PHICH in the PBCH. Sending the protection bandwidth indication information.

The preset field is a field existing in the PHICH, and the access network device indicates the size of the protection bandwidth to the terminal by redefining the existing field in the PHICH as the protection bandwidth indication information. For example, the access network device may redefine the phich-Resourc field in the PHICH as protection bandwidth indication information. Of course, the access network device can also redefine other fields in the PHICH as protection bandwidth indication information, which are not illustrated one by one.

For example, the size of the protection bandwidth between the non-multicast multicast transmission resource and the multicast multicast transmission resource in the target subframe is not fixed. The protection bandwidth indication information is a preset field of the PHICH, and the mapping relationship between each value of the protection bandwidth indication information and the size of the protection bandwidth may be as shown in Table 5.

table 5

With reference to the foregoing description, in step 403, the terminal may receive the protection bandwidth indication information by using K bits in the reserved bits of the PBCH; the terminal may also receive the protection bandwidth indication information by using a preset field of the PHICH in the PBCH. .

Finally, the terminal determines whether there is a fixed protection bandwidth between the non-multicast multicast transmission resource and the multicast multicast transmission resource by using the protection bandwidth indication information, or determines protection between the non-multicast multicast transmission resource and the multicast multicast transmission resource. The size of the bandwidth allows for signal reception at accurate resource locations.

Based on the same technical concept, the embodiment of the present application further provides a communication device, which can perform the method flow described in FIG. 2 .

As shown in FIG. 5, the embodiment of the present application provides a schematic structural diagram of a communication device.

Referring to Figure 5, the device includes:

The transceiver unit 501 is configured to determine a system bandwidth according to the received physical broadcast channel PBCH;

The processing unit 502 is configured to determine, according to the system bandwidth and a mapping relationship between the system bandwidth and the duration of the extended discovery signal, the duration of the extended discovery signal.

Optionally, the PBCH includes period indication information.

The processing unit 502 is further configured to:

Optionally, the processing unit 502 yuan is further used for:

Primary synchronization signal

Secondary synchronization signal

Main information block

System information block;

Cell reference signal;

Channel status information reference signal.

As shown in FIG. 6, the embodiment of the present application provides a schematic structural diagram of a communication device.

Referring to FIG. 6, the device includes: a transceiver 601, a processor 602, and a memory 603;

The memory 603 is configured to store computer instructions;

The transceiver 601 is configured to determine a system bandwidth according to the received physical broadcast channel PBCH;

The processor 602 is configured to read a computer instruction stored in the memory: according to The mapping between the system bandwidth and the duration of the system bandwidth and the extended discovery signal determines the duration of the extended discovery signal.

Optionally, the PBCH includes period indication information.

The processor 602 is further configured to:

Optionally, the processor 602 is further configured to:

Primary synchronization signal

Secondary synchronization signal

Main information block

System information block;

Cell reference signal;

Channel status information reference signal.

Based on the same technical concept, the embodiment of the present application further provides a communication device, which can perform the method flow described in FIG.

As shown in FIG. 7, the embodiment of the present application provides a schematic structural diagram of a communication device.

Referring to Figure 7, the device includes:

The processing unit 701 is configured to determine duration duration indication information of the extended transmission signal.

The transceiver unit 702 is configured to send the duration indication information to the terminal.

For other contents of the device, reference may be made to the foregoing description, and details are not described herein again.

As shown in FIG. 8, the embodiment of the present application provides a schematic structural diagram of a communication device.

Referring to FIG. 8, the device includes: a transceiver 801, a processor 802, and a memory 803;

The memory 803 is configured to store computer instructions;

The processor 802 is configured to determine duration indication information of the extended transmission signal.

The transceiver 801 is configured to send the duration indication information to the terminal.

As shown in FIG. 9, the embodiment of the present application provides a schematic structural diagram of a communication device.

Referring to Figure 9, the device includes:

The transceiver unit 901 is configured to receive duration indication information sent by the access network device.

The processing unit 902 is configured to determine, according to the duration indicator information, a duration of the extended discovery signal.

As shown in FIG. 10, the embodiment of the present application provides a schematic structural diagram of a communication device.

Referring to FIG. 10, the device includes: a transceiver 1001, a processor 1002, and a memory 1003.

The memory 1003 is configured to store computer instructions;

The transceiver 1001 is configured to receive duration indication information sent by the access network device.

The processor 1002 is configured to determine, according to the duration indicator information, a duration of the extended discovery signal.

As shown in FIG. 11, the embodiment of the present application provides a schematic structural diagram of a communication device.

Referring to Figure 11, the apparatus includes:

The processing unit 1101 is configured to determine protection bandwidth indication information, where the protection bandwidth indication information indicates a configuration of a protection bandwidth between the non-multicast multicast transmission resource and the multicast multicast transmission resource in the target subframe of the radio frame;

The transceiver unit 1102 is configured to send the protection bandwidth indication information to the terminal by using a physical broadcast channel PBCH.

As shown in FIG. 12, the embodiment of the present application provides a schematic structural diagram of a communication device.

Referring to FIG. 12, the device includes: a transceiver 1201, a processor 1202, and a memory 1203.

The memory 1203 is configured to store computer instructions;

The processor 1202 is configured to determine protection bandwidth indication information, where the protection bandwidth indication information indicates a configuration of a protection bandwidth between the non-multicast multicast transmission resource and the multicast multicast transmission resource in the target subframe of the radio frame;

The transceiver 1201 is configured to send the protection bandwidth indication information to the terminal by using a physical broadcast channel PBCH.

Based on the same technical concept, the embodiment of the present application further provides a communication device, which can perform the method flow described in FIG. 5.

As shown in FIG. 13, the embodiment of the present application provides a schematic structural diagram of a communication device.

Referring to Figure 13, the apparatus includes:

The transceiver unit 1301 is configured to receive, by using a physical broadcast channel PBCH, protection bandwidth indication information sent by the access network device;

The processing unit 1302 is configured to determine, according to the protection bandwidth indication information, a protection bandwidth between the non-multicast multicast transmission resource and the multicast multicast transmission resource in the target subframe.

As shown in FIG. 14, the embodiment of the present application provides a schematic structural diagram of a communication device.

Referring to FIG. 14, the device includes: a transceiver 1401, a processor 1402, and a memory 1403;

The memory 1403 is configured to store computer instructions;

The transceiver 1401 is configured to receive, by using a physical broadcast channel PBCH, protection bandwidth indication information sent by the access network device;

The processor 1402 is configured to determine, according to the protection bandwidth indication information, a protection bandwidth between the non-multicast multicast transmission resource and the multicast multicast transmission resource in the target subframe.

Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, system, or computer program product. Thus, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware. Moreover, the application can take the form of a computer program product embodied on one or more computer usable memory channels (including but not limited to disk storage and optical storage, etc.) in which computer usable program code is embodied.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. The computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine instruction for generating instructions executed by a processor of a computer or other programmable data processing device Means for implementing the functions specified in one or more flows of the flowchart or in a block or blocks of the flowchart.

These computer program instructions can also be stored in a bootable computer or other programmable data processing device. In a computer readable memory that operates in a particular manner, causing instructions stored in the computer readable memory to produce an article of manufacture comprising an instruction device implemented in one or more flows and/or block diagrams of the flowchart The function specified in the box or in multiple boxes.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

It will be apparent to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit and scope of the application. Thus, it is intended that the present invention cover the modifications and variations of the present invention.

Claims

A communication method, characterized in that the method comprises:

The terminal determines the system bandwidth according to the received physical broadcast channel PBCH;

The terminal determines a duration of the extended discovery signal according to a mapping relationship between the system bandwidth and a system bandwidth and a duration of the extended discovery signal.
The method according to claim 1, wherein the PBCH includes period indication information;

The method further includes:

The terminal determines a transmission period of the extended discovery signal according to the period indication information.
The method according to claim 2, wherein the period indication information occupies N bits in the reserved bits of the PBCH, and N is a positive integer greater than zero.
The method according to claim 2 or 3, wherein the method further comprises:

And determining, by the terminal, the subframe used for the multimedia broadcast multicast single frequency network MBSFN transmission in the transmission period indicated by the period indication information according to the period indication information and the duration of the extended discovery signal.
The method according to any one of claims 1 to 4, wherein the extended discovery signal is transmitted in a non-MBSFN subframe in a transmission period indicated by the period indication information.
The method according to any one of claims 1 to 5, wherein the extended discovery signal comprises one or more of the following:

Primary synchronization signal

Secondary synchronization signal

Main information block

System information block;

Cell reference signal;

Channel status information reference signal.
A communication device, characterized in that the device comprises:

a transceiver unit, configured to determine a system bandwidth according to the received physical broadcast channel PBCH;

And a processing unit, configured to determine a duration of the extended discovery signal according to a mapping relationship between the system bandwidth and a duration of the system bandwidth and the extended discovery signal.
The apparatus according to claim 7, wherein the PBCH includes period indication information;

The processing unit is further configured to:

Determining a transmission period of the extended discovery signal according to the period indication information.
The apparatus according to claim 8, wherein said period indication information occupies N bits of reserved bits of said PBCH, and N is a positive integer greater than zero.
The device according to claim 8 or 9, wherein the processing unit is further configured to:

Determining, according to the period indication information and the duration of the extended discovery signal, a subframe for a multimedia broadcast multicast single frequency network MBSFN transmission in a transmission period indicated by the period indication information.
The apparatus according to any one of claims 7 to 10, wherein the extended discovery signal is transmitted in a non-MBSFN subframe in a transmission period indicated by the period indication information.
The apparatus according to any one of claims 7 to 11, wherein the extended discovery signal comprises one or more of the following:

Primary synchronization signal

Secondary synchronization signal

Main information block

System information block;

Cell reference signal;

Channel status information reference signal.
A communication device, comprising: a transceiver, a processor, and a memory;

The memory is for storing computer instructions;

The transceiver is configured to determine a system bandwidth according to the received physical broadcast channel PBCH;

The processor is configured to read a computer instruction stored in the memory to determine a duration of the extended discovery signal according to a mapping relationship between the system bandwidth and a duration of the system bandwidth and the extended discovery signal.
The apparatus according to claim 13, wherein the PBCH includes period indication information;

The processor is further configured to:

Determining a transmission period of the extended discovery signal according to the period indication information.
The apparatus according to claim 14, wherein said period indication information occupies N bits of reserved bits of said PBCH, and N is a positive integer greater than zero.
The device according to claim 14 or 15, wherein the processor is further configured to:

Determining, according to the period indication information and the duration of the extended discovery signal, a subframe for a multimedia broadcast multicast single frequency network MBSFN transmission in a transmission period indicated by the period indication information.
The apparatus according to any one of claims 13 to 16, wherein the extended discovery signal is transmitted in a non-MBSFN subframe in a transmission period indicated by the period indication information.
The apparatus according to any one of claims 13 to 17, wherein the extended discovery signal comprises one or more of the following:

Primary synchronization signal

Secondary synchronization signal

Main information block

System information block;

Cell reference signal;

Channel status information reference signal.