CN109792585B

CN109792585B - Communication method and device

Info

Publication number: CN109792585B
Application number: CN201680089701.4A
Authority: CN
Inventors: 魏冬冬; 张长
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-09-29
Filing date: 2016-09-29
Publication date: 2021-03-02
Anticipated expiration: 2036-09-29
Also published as: CN109792585A; WO2018058445A1

Abstract

A communication method and a device are provided, and the method comprises the following steps: the terminal determines the system bandwidth (201) according to the received physical broadcast channel PBCH; the terminal determines the duration of the extended discovery signal according to the system bandwidth and a mapping relation 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

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

In a current LTE (Long Term Evolution) protocol, 10ms is defined as a radio frame, each radio frame includes 10 subframes, each subframe has a duration of 1ms, and a subframe is used as a basic scheduling time unit. Because the Network needs to support both the unicast service and the Multimedia Broadcast service (hereinafter referred to as Broadcast service), the air interface multiplexes the unicast service and the Broadcast service in a time division multiplexing manner, that is, the unicast service and the Broadcast service occupy different subframes, wherein the subframe carrying the Broadcast service is referred to as an MBSFN (Multimedia Broadcast multicast service Single Frequency Network) subframe.

To further enhance the MBMS performance, a standing discussion is made in LTE release-14 for MBMS enhancement, wherein one of the targets of MBMS enhancement is: the number of MBSFN subframes in one radio frame is increased, for example, the carrier may be configured as 100% MBSFN subframes.

For the case that the carrier is configured as a 100% MBSFN subframe, at least one subframe needs to be periodically used to carry the extended discovery signal such as the synchronization signal, the broadcast message, the system message block, etc. The number of the subframes for transmitting the extended discovery signal is determined according to the system bandwidth, and therefore, the duration of the extended discovery signal is different in different system bandwidths. At present, there is no clear solution how to inform the terminal of the duration of transmitting the extended discovery signal when the carrier is configured as a 100% MBSFN subframe.

Disclosure of Invention

The embodiment of the application provides a communication method and device, so that a terminal is informed of the duration of sending an extended discovery signal under the condition that a carrier is configured as a 100% MBSFN subframe.

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; and the terminal determines the duration of the extended discovery signal according to the system bandwidth and the mapping relation between the system bandwidth and the duration of the extended discovery signal.

By the method, after the terminal determines the system bandwidth, the duration of the extended discovery signal can be determined according to the system bandwidth and the mapping relation between the system bandwidth and the duration of the extended discovery signal, so that the duration of the extended discovery signal sent by the terminal is notified through the system bandwidth under the condition that the carrier is configured to be a 100% MBSFN subframe.

Optionally, the PBCH includes cycle indication information; the method further comprises the following steps:

and the terminal determines the sending period of the extended discovery signal according to the period indication information.

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

Optionally, the method further includes: and the terminal determines the subframe used for the MBSFN transmission in the sending 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:

a master synchronization signal;

an auxiliary synchronization signal;

a master information block;

a system information block;

a cell reference signal;

channel state information reference signals.

In a second aspect, an embodiment of the present application provides a communication apparatus, including:

a receiving and sending unit, configured to determine a system bandwidth according to a received physical broadcast channel PBCH;

and the processing unit is used for determining the duration of the extended discovery signal according to the system bandwidth and the mapping relation between the system bandwidth and the duration of the extended discovery signal.

Optionally, the PBCH includes cycle indication information;

the processing unit is further to:

and determining the transmission period of the extended discovery signal according to the period indication information.

Optionally, the processing unit is further configured to:

and determining a subframe used for multimedia broadcast multicast single frequency network (MBSFN) transmission in a sending 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 includes one or more of:

a master synchronization signal;

an auxiliary synchronization signal;

a master information block;

a system information block;

a cell reference signal;

channel state information reference signals.

In a third aspect, an embodiment of the present application provides a communication apparatus, including: a transceiver, a processor, a memory;

the memory is to store computer instructions;

the transceiver is used for determining the system bandwidth according to the received physical broadcast channel PBCH;

the processor is used for reading the computer instructions stored in the memory to execute: and determining the duration of the extended discovery signal according to the system bandwidth and the mapping relation between the system bandwidth and the duration of the extended discovery signal.

Optionally, the PBCH includes cycle indication information;

the processor is further configured to: and determining the transmission period of the extended discovery signal according to the period indication information.

Optionally, the processor is further configured to:

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

a master synchronization signal;

an auxiliary synchronization signal;

a master information block;

a system information block;

a cell reference signal;

channel state information reference signals.

In a fourth aspect, an embodiment of the present application provides a communication method, where the method includes: the access network equipment determines the duration indication information of the extended discovery signal; and the access network equipment sends the duration indication information to the terminal.

By the method, the access network equipment indicates the duration of the extended discovery signal to the terminal by sending the duration indication information to the terminal, so that the terminal can determine the duration of the extended discovery signal under the condition that the carrier is configured to be a 100% MBSFN subframe.

Optionally, the sending, by the access network device, the duration indication information to the terminal includes:

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

Optionally, the sending, by the access network device, the duration indication information to the terminal through the PBCH includes:

the access network equipment sends the duration indication information through M bits in reserved bits of the PBCH, wherein M is a positive integer greater than 0; or the access network equipment sends the duration indication information through a preset field of a physical hybrid automatic repeat request indicator channel PHICH in the PBCH.

Optionally, the method further includes:

the access network equipment sends periodic indication information to the terminal through PBCH; the period indication information is used for indicating a transmission period of the extended discovery signal.

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

a processing unit for determining duration indication information of the extended discovery signal;

and the transceiving unit is used for sending the duration indication information to the terminal.

Optionally, the transceiver unit is specifically configured to:

and sending the duration indication information to the terminal through a physical broadcast channel PBCH.

Optionally, the transceiver unit is specifically configured to:

sending the duration indication information through M bits in reserved bits of the PBCH, wherein M is a positive integer greater than 0; or sending the duration indication information through a preset field of a physical hybrid automatic repeat request indicator channel (PHICH) in the PBCH.

Optionally, the transceiver unit is further configured to:

sending periodic indication information to a terminal through PBCH; the period indication information is used for indicating a transmission period of the extended discovery signal.

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

a processor for determining duration indication information of an extended discovery signal;

and the transceiver is used for sending 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, an embodiment of the present application provides a communication method, where the method includes:

the terminal receives duration indication information sent by the access network equipment;

and the terminal determines the duration of the extended discovery signal according to the duration indication information.

Optionally, the receiving, by the terminal, duration indication information sent by the access network device includes:

and the terminal receives the duration indication information through a Physical Broadcast Channel (PBCH).

Optionally, the receiving, by the terminal, the duration indication information through PBCH includes:

the terminal receives the duration indication information through M bits in reserved bits of the PBCH, wherein M is a positive integer greater than 0; or the terminal receives the duration indication information through a preset field of a physical hybrid automatic repeat request indicator channel PHICH in the PBCH.

Optionally, the method further includes:

the terminal receives the period indication information sent by the access network equipment through PBCH; the period indication information is used for indicating a transmission period of the extended discovery signal.

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

the receiving and sending unit is used for receiving duration indication information sent by the access network equipment;

and the processing unit is used for determining the duration of the extended discovery signal according to the duration indication information.

Optionally, the transceiver unit is specifically configured to:

and receiving the duration indication information through a Physical Broadcast Channel (PBCH).

Optionally, the transceiver unit is specifically configured to:

receiving the duration indication information through M bits in reserved bits of the PBCH, wherein M is a positive integer greater than 0; or receiving the duration indication information through a preset field of a physical hybrid automatic repeat request indicator channel (PHICH) in the PBCH.

Optionally, the transceiver unit is further configured to:

receiving the period indication information sent by the access network equipment through PBCH; the period indication information is used for indicating a transmission period of the extended discovery signal.

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

the transceiver is used for receiving duration indication information sent by the access network equipment;

and the processor is used for determining the duration of the extended discovery signal according to the duration indication information.

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

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

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

By the method, the access network equipment indicates whether a fixed protection bandwidth exists between the non-multicast transmission resource and the multicast transmission resource or indicates the size of the protection bandwidth between the non-multicast transmission resource and the multicast transmission resource to the terminal through the protection bandwidth indication information, so that the terminal can receive signals at an accurate resource position.

Optionally, the sending, by the access network device, the guard bandwidth indication information to the terminal through the PBCH includes:

the access network equipment sends the protection bandwidth indication information through K bits in reserved bits of the PBCH, wherein K is a positive integer greater than 0; or the access network equipment sends the protection bandwidth indication information through a preset field of a physical hybrid automatic repeat request indicator channel PHICH in the PBCH.

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

In an eleventh aspect, an embodiment of the present application provides a communication apparatus, including:

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

and the transceiving unit is used for sending the protection bandwidth indication information to the terminal through a physical broadcast channel PBCH.

Optionally, the transceiver unit is specifically configured to:

transmitting the guard bandwidth indication information through K bits in reserved bits of the PBCH, wherein K is a positive integer greater than 0; or sending the protection bandwidth indication information through a preset field of a physical hybrid automatic repeat request indicator channel (PHICH) in the PBCH.

In a twelfth aspect, an embodiment of the present application provides a communication apparatus, including:

a processor for determining guard bandwidth indication information; the protection bandwidth indication information indicates the configuration of the protection bandwidth between the non-multicast transmission resource and the multicast transmission resource in the target subframe of the wireless frame;

and the transceiver is used for sending the protection bandwidth indication information to the terminal through a physical broadcast channel PBCH.

Optionally, the transceiver is specifically configured to:

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

a terminal receives protection bandwidth indication information sent by access network equipment through a physical broadcast channel PBCH;

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

By the method, the terminal determines whether a fixed protection bandwidth exists between the non-multicast transmission resource and the multicast transmission resource or determines the size of the protection bandwidth between the non-multicast transmission resource and the multicast transmission resource through the protection bandwidth indication information, so that the signal can be received at an accurate resource position.

Optionally, the receiving, by the terminal, the guard bandwidth indication information through PBCH includes:

the terminal receives the protection bandwidth indication information through K bits in reserved bits of the PBCH; or the terminal receives the protection bandwidth indication information through a preset field of a physical hybrid automatic repeat request indicator channel PHICH in the PBCH.

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

a receiving and sending unit, configured to receive, through a physical broadcast channel PBCH, guard bandwidth indication information sent by an access network device;

and the processing unit is used for determining the protection bandwidth between the non-multicast transmission resource and the multicast transmission resource in the target subframe according to the protection bandwidth indication information.

Optionally, the transceiver unit is specifically configured to:

receiving the guard bandwidth indication information through K bits of reserved bits of the PBCH; or receiving the guard bandwidth indication information through a preset field of a physical hybrid automatic repeat request indicator channel (PHICH) in the PBCH.

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

the transceiver is used for receiving the protection bandwidth indication information sent by the access network equipment through a physical broadcast channel PBCH;

and the processor is used for determining the protection bandwidth between the non-multicast transmission resource and the multicast transmission resource in the target subframe according to the protection bandwidth indication information.

Optionally, the transceiver is specifically configured to:

Drawings

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

fig. 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;

fig. 4 is a flowchart illustrating a communication method according to an embodiment of the present application;

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

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

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

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

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

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

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

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

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

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

Detailed Description

The embodiments of the present application will be described in detail below with reference to the drawings attached hereto.

Hereinafter, some terms in the present application are explained to facilitate understanding by those skilled in the art.

1) A terminal, also called a User Equipment (UE), is a device providing voice and/or data connectivity to a User, for example, a handheld device with a wireless connection function, a vehicle-mounted device, and so on. Common terminals include, for example: the mobile phone includes a mobile phone, a tablet computer, a notebook computer, a palm computer, a Mobile Internet Device (MID), and a wearable device such as a smart watch, a smart bracelet, a pedometer, and the like.

2) Access network equipment, also called a base station, is a device for accessing a terminal to a wireless network, including but not limited to: evolved Node B (eNB), Radio Network Controller (RNC), Node B (NB), Base Station Controller (BSC), Base Transceiver Station (BTS), Home Base Station (e.g., Home evolved Node B, or Home Node B, HNB), and BaseBand Unit (BBU). In addition, a Wifi Access Point (AP) or the like may also be included.

3) In the embodiment of the application, a subframe which bears the broadcast multicast service in a wireless frame is called an MBSFN subframe, and a subframe which does not bear the broadcast multicast service is called a non-MBSFN subframe.

4) In the embodiment of the present application, a resource that carries multicast and multicast services in one subframe is referred to as a multicast and multicast transmission resource, and a resource that does not carry multicast and multicast services is referred to as a non-multicast and multicast transmission resource.

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

a master synchronization signal;

an auxiliary synchronization signal;

a master information block;

a system information block;

a cell reference signal;

channel state information reference signals.

Of course, the extended discovery signal is not limited to the above signals, and may include other signals, which are not illustrated in sequence here.

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

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

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

UE (User Equipment): the UE may have a function of accessing a network side through an access network device, such as an eNB, in LTE, or may have a function of transmitting voice or data traffic through wireless transmission with the access device in other networks.

Interface S1: is the standard interface between the eNB and the core network. The eNB is connected with the MME through an S1-MME interface and is used for controlling the transmission of signaling; the eNB is connected with the S-GW through an S1-U interface and is used for transmitting user data. Wherein the S1-MME interface and the S1-U interface are collectively called S1 interface.

X2 interface: and the standard interface between the eNB and the eNB is used for realizing the intercommunication between the base stations.

A 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 flowchart illustrating a communication method according to an embodiment of the present application.

As shown in fig. 2, the method may include the steps of:

step 201: and the terminal determines the system bandwidth according to the received physical broadcast channel.

Step 202: and the terminal determines the duration of the extended discovery signal according to the system bandwidth and the mapping relation between the system bandwidth and the duration of 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), which may specifically refer to the specification in the existing communication standard and is not described herein again.

It should be noted that the terminal may be a terminal in an idle state or a terminal that does not access a network.

In step 202, after determining the system bandwidth, the terminal may use, according to a mapping relationship between the system bandwidth and a duration of the extended discovery signal, a duration of the extended discovery signal mapped with the system bandwidth in the mapping relationship as the determined duration of the extended discovery signal.

In the case that the carrier is configured as a 100% MBSFN subframe, the extended discovery signal may be used to instruct the terminal to access the network and acquire a system message. Specific contents of the extended discovery signal may refer to the foregoing description, where when the extended discovery signal includes a primary synchronization signal, a secondary synchronization signal, and a master information block, the primary synchronization signal, the secondary synchronization signal, and the master information block may be transmitted in a first subframe of a duration of the extended discovery signal, or a predefined plurality of subframes, which is not limited in this embodiment of the present application. Further, the extended discovery signal may be transmitted in a non-MBSFN subframe in an extended discovery signal transmission period.

The mapping relation between the system bandwidth and the duration of the extended discovery signal can be predetermined by the terminal and the access network equipment; the mapping relationship between the system bandwidth and the duration of the extended discovery signal may also be predefined in the communication protocol, which is not limited in the embodiment of the present application.

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

TABLE 1

With reference to table 1, when the terminal determines that the system bandwidth is 5M, the duration of the extended discovery signal may be determined to be the duration of 1 subframe 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.

As another example, the mapping relationship between the system bandwidth and the duration of the extended discovery signal may 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, which is not described herein again.

According to the method, after the terminal determines the system bandwidth, the duration of the extended discovery signal can be determined according to the system bandwidth and the mapping relation between the system bandwidth and the duration of the extended discovery signal, so that the duration of the extended discovery signal sent by the terminal is notified through the system bandwidth under the condition that the carrier is configured to be a 100% MBSFN subframe.

Optionally, in this embodiment of the present application, the access network device may further send the period indication information to the terminal through the PBCH; the period indication information is used for indicating a transmission 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 are determined according to actual conditions, and are not described herein again.

Optionally, the period indication information occupies N bits of reserved bits of the PBCH, where N is a positive integer greater than 0. For example, there are two cases of extending the transmission period of the discovery signal: 10ms 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, 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, which are not described herein again.

It should be noted that N bits occupied by the period indication information in the reserved bits of the PBCH need to be agreed in advance by the access network device and the terminal, and a specific agreed manner is not limited in this embodiment.

By the method, after the terminal receives the period indication information through the PBCH, the terminal can determine the sending period of the extended discovery signal according to the period indication information, so that the extended discovery signal can be received more accurately.

Further, after the terminal determines the period indication information and the duration of the extended discovery signal, the terminal may determine the subframe used for MBSFN transmission in the period according to the period indication information and the duration of the extended discovery signal, so as to determine information such as the transmission time and the location information of the MBSFN subframe.

In this embodiment, the access network device may also directly indicate, to the terminal, the duration of the extended discovery signal. With reference to fig. 3, a flowchart of a communication method according to an embodiment of the present application is shown.

As shown in fig. 3, the method may include the steps of:

step 301: the access network equipment determines the duration indication information of the extended discovery signal;

step 302: and the access network equipment sends the duration indication information to the terminal.

Step 303: the terminal receives duration indication information sent by the access network equipment;

step 304: and the terminal determines the duration of the extended discovery signal according to the duration indication information.

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

The duration indication information can occupy M bits, M is a positive integer greater than 0, each value of the M bits occupied by the duration indication information can uniquely correspond to the duration of one extended discovery signal, and the terminal can determine the duration of the extended discovery signal according to the value of the M bits occupied by the duration indication information, so that the duration of the extended discovery signal can be indicated through the duration indication information.

It should be noted that, the correspondence between the values of the M bits occupied by the duration indication information and the duration of the extended discovery signal may be predetermined 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 PBCH. Specifically, in a possible implementation manner, the access network device may send the duration indication information through M bits in reserved bits of the PBCH.

In conjunction with the foregoing description, each value of the M bits occupied by the duration indication information may uniquely correspond to the duration of one extended discovery signal. For example, the duration indication information occupies 2 bits, and a mapping relationship between each value of the 2 bits occupied by the duration indication information and the duration of the extended discovery signal may be as shown in table 3.

TABLE 3

With reference to table 3, when the terminal determines that the value of 2 bits occupied by the duration indication information is 01, it may determine that the duration of the extended discovery signal is the duration of 2 subframes. Of course, table 3 is only an example, and the mapping relationship between the value of the bit occupied by the duration indication information and the duration of the extended discovery signal may also have other forms.

It should be noted that, the M bits occupied by the duration indication information in the reserved bits of the PBCH need to be agreed in advance by the access network device and the terminal, and a specific agreed manner is not limited in this embodiment.

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

The preset field is the field in the PHICH, and the access network equipment realizes the purpose of indicating the extended duration of the discovery signal to the terminal by redefining the field in the PHICH as the duration indication information. For example, the access network device may redefine the phy-resource field in the PHICH as the duration indication information. Of course, the access network device may also redefine other fields in the PHICH as the duration indication information, which is not illustrated herein one by one.

Optionally, in this embodiment of the present application, the access network device may further send the period indication information to the terminal through the PBCH; the period indication information is used for indicating a transmission period of the extended discovery signal. The access network equipment indicates the sending period of the extended discovery signal by sending the period indication information to the terminal, so that the efficiency of receiving the extended discovery signal by the terminal is improved.

Accordingly, 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 through M bits in the reserved bits of the PBCH; of course, the terminal may also receive the duration indication information through a preset field of the PHICH in the PBCH, which specifically refers to the foregoing description and is not described herein again.

The terminal can receive the duration indication information sent by the access network equipment and simultaneously can also receive the duration indication information sent by the access network equipment

And receiving the duration indication information and receiving the cycle indication information sent by the access network equipment through PBCH, thereby determining the sending cycle of the extended discovery signal.

When the carrier is configured as a 100% MBSFN subframe, signals such as a synchronization signal and a broadcast signal can be transmitted by using a scheme in the prior art in a frequency division multiplexing manner. For example, at least 6 Resource Blocks (RBs) in the middle of the sub-frame 0 and the sub-frame 5 in the radio frame are transmitted by using the existing scheme, and the rest RBs are used for multicast service transmission; all RBs on the remaining subframes are used for multicast service transmission (referred to as multicast transmission resources). In this case, for subframe 0 and subframe 5, the same subcarrier spacing/Cyclic Prefix (CP) length may be used for the non-multicast transmission resource and the multicast transmission resource, or different subcarrier spacing/CP lengths may be used.

When the non-multicast transmission resource and the multicast transmission resource adopt the same subcarrier spacing/CP length in the subframe comprising the non-multicast transmission resource and the multicast transmission resource, the bandwidth does not need to be protected between the non-multicast transmission resource and the multicast transmission resource; when the non-multicast transmission resource and the multicast transmission resource use different subcarrier spacing/CP lengths in the subframe including the non-multicast transmission resource and the multicast transmission resource, a bandwidth needs to be protected between the non-multicast transmission resource and the multicast transmission resource.

In the above scheme, the terminal cannot determine whether a protection bandwidth exists between the non-multicast transmission resource and the multicast transmission resource, or cannot determine the size of the protection bandwidth between the non-multicast transmission resource and the multicast transmission resource, so that signal reception cannot be performed at an accurate resource location.

With reference to fig. 4, a flowchart of a communication method according to an embodiment of the present application is shown.

As shown in fig. 4, the method may include the steps of:

step 401: the access network equipment determines protection bandwidth indication information; and the protection bandwidth indication information indicates the configuration of the protection bandwidth between the non-multicast transmission resource and the multicast transmission resource in the target subframe of the wireless frame.

The target subframe is a subframe including non-multicast transmission resources and multicast transmission resources in a wireless frame.

Step 402: and the access network equipment sends the protection bandwidth indication information to a terminal through PBCH.

Step 403: the terminal receives the protection bandwidth indication information sent by the access network equipment through PBCH;

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

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

With reference to the above description, when the size of the protection bandwidth between the non-multicast transmission resource and the multicast transmission resource in the target subframe is the fixed protection bandwidth, the protection bandwidth indication information may indicate whether the fixed protection bandwidth exists between the non-multicast transmission resource and the multicast transmission resource in the target subframe; when the size of the protection bandwidth between the non-multicast transmission resource and the multicast transmission resource in the target subframe is not fixed, the protection bandwidth indication information may indicate the size of the protection bandwidth between the non-multicast transmission resource and the 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 guard bandwidth indication information through K bits in reserved bits of the PBCH, where K is a positive integer greater than 0. The value of K is determined according to actual conditions, and is not described herein again.

For example, the size of the protection bandwidth between the non-multicast transmission resource and the multicast transmission resource in the target subframe is a fixed protection bandwidth. The protection bandwidth indication information occupies 1 bit in the reserved bits of the PBCH, and a mapping relationship between each value of the 1 bit occupied by the protection bandwidth indication information and the size of the protection bandwidth may be as shown in table 4.

TABLE 4

Of course, the above is only an example, and when the value of the bit occupied by the protection bandwidth indication information is 1, the bit can also be mapped with the protection bandwidth as 0; when the bit occupied by the protection bandwidth indication information takes a value of 0, the protection bandwidth indication information and the protection bandwidth can also be mapped as a fixed bandwidth.

In a second implementation manner, the access network device sends the guard bandwidth indication information through a preset field of a PHICH in the PBCH.

The preset field is the field in the PHICH, and the access network equipment realizes the indication of the size of the protection bandwidth to the terminal by redefining the field in the PHICH into the indication information of the protection bandwidth. For example, the access network device may redefine the phy-resource field in the PHICH as the guard bandwidth indication information. Of course, the access network device may also redefine other fields in the PHICH as the guard bandwidth indication information, which is not illustrated herein one by one.

For example, the size of the guard bandwidth between the non-multicast transmission resource and the multicast transmission resource in the target subframe is not fixed. The protection bandwidth indication information is a preset field of the PHICH, and a 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 guard bandwidth indication information through K bits in reserved bits of the PBCH; the terminal can also receive the guard bandwidth indication information through a preset field of the PHICH in the PBCH.

And finally, the terminal determines whether a fixed protection bandwidth exists between the non-multicast transmission resource and the multicast transmission resource or determines the size of the protection bandwidth between the non-multicast transmission resource and the multicast transmission resource through the protection bandwidth indication information, so that the signal can be received at an accurate resource position.

Based on the same technical concept, the embodiment of the present application further provides a communication device, and the communication device may execute the method flow described in fig. 2.

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

Referring to fig. 5, the apparatus includes:

a transceiving unit 501, configured to determine a system bandwidth according to a received physical broadcast channel PBCH;

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

Optionally, the PBCH includes cycle indication information;

the processing unit 502 is further configured to:

Optionally, the processing unit 502 element is further configured to:

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

a master synchronization signal;

an auxiliary synchronization signal;

a master information block;

a system information block;

a cell reference signal;

channel state information reference signals.

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

Referring to fig. 6, the apparatus includes: a transceiver 601, a processor 602, a memory 603;

the memory 603 is used for storing computer instructions;

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

the processor 602 is configured to read the computer instructions stored in the memory to perform: and determining the duration of the extended discovery signal according to the system bandwidth and the mapping relation between the system bandwidth and the duration of the extended discovery signal.

Optionally, the PBCH includes cycle indication information;

the processor 602 is further configured to:

Optionally, the processor 602 is further configured to:

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

a master synchronization signal;

an auxiliary synchronization signal;

a master information block;

a system information block;

a cell reference signal;

channel state information reference signals.

Based on the same technical concept, the embodiment of the present application further provides a communication device, and the communication device may execute the method flow described in fig. 3.

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

Referring to fig. 7, the apparatus includes:

a processing unit 701, configured to determine duration indication information of an extended discovery signal;

a transceiving unit 702, configured to send the duration indication information to the terminal.

For further details of the apparatus, reference may be made to the preceding description, which is not repeated here.

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

Referring to fig. 8, the apparatus includes: transceiver 801, processor 802, memory 803;

the memory 803 is used for storing computer instructions;

a processor 802 configured to determine duration indication information of an extended discovery signal;

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

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

Referring to fig. 9, the apparatus includes:

a transceiver 901, configured to receive duration indication information sent by an access network device;

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

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

Referring to fig. 10, the apparatus includes: a transceiver 1001, a processor 1002, a memory 1003;

the memory 1003 is used for storing computer instructions;

a transceiver 1001, configured to receive duration indication information sent by an access network device;

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

Based on the same technical concept, the embodiment of the present application further provides a communication device, and the communication device may execute the method flow described in fig. 4.

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

Referring to fig. 11, the apparatus includes:

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

a transceiving unit 1102, configured to send the guard bandwidth indication information to a terminal through a physical broadcast channel PBCH.

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

Referring to fig. 12, the apparatus includes: a transceiver 1201, a processor 1202, a memory 1203;

the memory 1203 is configured to store computer instructions;

a processor 1202 for determining guard bandwidth indication information; the protection bandwidth indication information indicates the configuration of the protection bandwidth between the non-multicast transmission resource and the multicast transmission resource in the target subframe of the wireless frame;

a transceiver 1201, configured to send the guard bandwidth indication information to a terminal through a physical broadcast channel PBCH.

Based on the same technical concept, the embodiment of the present application further provides a communication device, and the communication device may execute the method flow described in fig. 5.

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

Referring to fig. 13, the apparatus includes:

a transceiving unit 1301, configured to receive, through a physical broadcast channel PBCH, protection bandwidth indication information sent by an access network device;

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

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

Referring to fig. 14, the apparatus includes: a transceiver 1401, a processor 1402, a memory 1403;

the memory 1403 is used for storing computer instructions;

a transceiver 1401, configured to receive, through a physical broadcast channel PBCH, guard bandwidth indication information sent by an access network device;

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

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

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

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

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

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

Claims

1. A communication method for transmitting an extended discovery signal in a carrier used only for MBMS transmission in a multimedia broadcast multicast service, the method comprising:

determining duration indication information of an extended discovery signal, wherein the extended discovery signal is transmitted in a non-multimedia broadcast multicast single frequency network, MBSFN, subframe in a transmission period of the extended discovery signal, the extended discovery signal comprising one or more of: a primary synchronization signal, a secondary synchronization signal, a primary information block, a system information block, a cell reference signal, a channel state information reference signal;

2. The method of claim 1, wherein the duration indication information occupies M bits, M is a positive integer greater than 0, and each value of the M bits occupied by the duration indication information uniquely corresponds to a duration of an extended discovery signal.

3. A communication method for transmitting an extended discovery signal in a carrier used only for MBMS transmission in a multimedia broadcast multicast service, the method comprising:

receiving duration indication information of an extended discovery signal sent by an access network device through a Physical Broadcast Channel (PBCH), wherein the extended discovery signal is transmitted in a non-multimedia broadcast multicast single frequency network (MBSFN) subframe in a sending period of the extended discovery signal, and the extended discovery signal comprises one or more of the following: a primary synchronization signal, a secondary synchronization signal, a primary information block, a system information block, a cell reference signal, a channel state information reference signal;

and determining the duration of the extended discovery signal according to the duration indication information.

4. The method of claim 3, further comprising:

and determining the subframe used for MBSFN transmission in the transmission period of the extended discovery signal according to the transmission period of the extended discovery signal and the duration of the extended discovery signal.

5. The method according to claim 3 or 4, wherein the duration indication information occupies M bits, M is a positive integer greater than 0, and each value of the M bits occupied by the duration indication information uniquely corresponds to the duration of one extended discovery signal.

6. A communications apparatus for transmitting an extended discovery signal in a carrier used only for MBMS transmission in a multimedia broadcast multicast service, comprising:

a processing unit, configured to determine duration indication information of an extended discovery signal, where the extended discovery signal is transmitted in a non-multimedia broadcast multicast single frequency network, MBSFN, subframe in a transmission period of the extended discovery signal, and the extended discovery signal includes one or more of: a primary synchronization signal, a secondary synchronization signal, a primary information block, a system information block, a cell reference signal, a channel state information reference signal;

and the transceiving unit is used for sending the duration indication information to the terminal through a physical broadcast channel PBCH.

7. The apparatus of claim 6, wherein the duration indication information occupies M bits, M is a positive integer greater than 0, and each value of the M bits occupied by the duration indication information uniquely corresponds to a duration of an extended discovery signal.

8. A communications apparatus for transmitting an extended discovery signal in a carrier used only for MBMS transmission in a multimedia broadcast multicast service, the apparatus comprising:

a transceiver unit, configured to receive duration indication information of an extended discovery signal sent by an access network device through a physical broadcast channel PBCH, where the extended discovery signal is transmitted in a non-multimedia broadcast multicast single frequency network MBSFN subframe in a sending period of the extended discovery signal, and the extended discovery signal includes one or more of the following: a primary synchronization signal, a secondary synchronization signal, a primary information block, a system information block, a cell reference signal, a channel state information reference signal;

9. The apparatus of claim 8, wherein the processing unit is further configured to:

10. The apparatus according to claim 8 or 9, wherein the duration indication information occupies M bits, M being a positive integer greater than 0, and each value of the M bits occupied by the duration indication information uniquely corresponds to a duration of one extended discovery signal.

11. A computer-readable storage medium, in which a program or instructions are stored, which when executed by a computer, implement the method of any one of claims 1 to 5.

12. A communications apparatus, comprising: memory and processor connected to the memory for executing computer programs or instructions stored in the memory for implementing the method according to any one of claims 1 to 5.

13. A communication system comprising a communication device according to any of claims 6 to 7 and a communication device according to any of claims 8 to 10.