CN106031269B

CN106031269B - Signal transmitting method, signal receiving method and related equipment

Info

Publication number: CN106031269B
Application number: CN201480013811.3A
Authority: CN
Inventors: 黎超; 菲利普·萨特瑞
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2014-09-25
Filing date: 2014-09-25
Publication date: 2020-01-21
Anticipated expiration: 2034-09-25
Also published as: CN106031269A; WO2016045037A1

Abstract

The embodiment of the invention discloses a signal sending method, a signal receiving method and related equipment thereof, which are used for effectively utilizing unoccupied resources in a synchronous signal subframe and/or a synchronous control channel subframe and improving the utilization rate of a system to the resources. The method provided by the embodiment of the invention comprises the following steps: the transmitting terminal equipment firstly determines unoccupied resources in a synchronization signal subframe and/or a synchronization control channel subframe of D2D, loads data on the unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe, and then sends the data loaded in the synchronization signal subframe and/or the synchronization control channel subframe to the receiving terminal equipment.

Description

Signal transmitting method, signal receiving method and related equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a signal sending method, a signal receiving method, and related devices.

Background

Device to Device (D2D), also known as direct communication, is a technology that is currently being standardized in 3rd Generation partnership Project (3 GPP) release 12 (Rel-12). The technology has obvious advantages, such as using a broadcasting mode, when one user sends a plurality of users, only one radio resource is used, thereby improving the efficiency of air interface transmission; the devices are directly communicated without passing through a base station and a core network, so that the load of the network is greatly reduced.

In the D2D technology, because the participation of the base station is less, more mechanisms for mutual coordination between the devices are needed. One of the mechanisms is that synchronization needs to be established between a plurality of devices, so that a synchronization signal needs to be transmitted between the plurality of devices. In order to facilitate the receiving of the synchronization signal by the receiving end device, in the D2D technology, some basic control information needs to be broadcast through a synchronization control channel.

However, currently, in a synchronization signal subframe or a synchronization control channel subframe that is sent at a certain periodic interval, a synchronization signal and a synchronization control channel only occupy part of resources in the sent synchronization signal subframe or synchronization control channel subframe, and a lot of time-frequency resources in the synchronization signal subframe or synchronization control channel subframe are not utilized, which causes waste of time-frequency resources.

Disclosure of Invention

The embodiment of the invention provides a signal sending method, a signal receiving method and related equipment thereof, which are used for effectively utilizing unoccupied resources in a synchronous signal subframe and/or a synchronous control channel subframe and improving the utilization rate of a system to the resources.

A first aspect of an embodiment of the present invention provides a signal sending method, including:

the method comprises the steps that a transmitting terminal device determines unoccupied resources in a synchronization signal subframe and/or a synchronization control channel subframe of a device-to-device D2D, wherein the synchronization signal subframe comprises a synchronization signal, and the synchronization control channel subframe comprises a synchronization control channel;

the transmitting terminal equipment loads data on unoccupied resources in the synchronous signal sub-frame and/or the synchronous control channel sub-frame;

and the transmitting terminal equipment transmits the loaded data to receiving terminal equipment.

With reference to the first aspect of the present invention, in a first implementation manner of the first aspect of the present invention, before the step of the transmitting end device loading data on unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe, the method further includes:

when the synchronous signal subframe does not comprise a synchronous control channel, the transmitting terminal equipment loads a first reference signal on a symbol which is not occupied by a synchronous signal and is at a position different from the synchronous signal in the synchronous signal subframe;

when the synchronous control channel subframe does not comprise a synchronous signal, the transmitting terminal equipment loads a second reference signal on a symbol which is not occupied by the synchronous control channel and is at a position different from the synchronous control channel in the synchronous control channel subframe;

when the synchronization signal subframe or the synchronization control channel subframe includes both the synchronization signal and the synchronization control channel, the transmitting end device loads a third reference signal on a symbol which is not occupied by the synchronization signal and the synchronization control channel and is at a position different from the positions of the synchronization signal and the synchronization control channel in the synchronization signal subframe or the synchronization control channel subframe.

With reference to the first implementation manner of the first aspect of the present embodiment, in a second implementation manner of the first aspect of the present embodiment, the first reference signal, the second reference signal, or the third reference signal is generated by a uniquely determined sequence, and a sequence generating method corresponding to the first reference signal includes:

a first part of the sequence is generated over the bandwidth of the data or over the bandwidth of the synchronization signal or synchronization control channel and a second part of the sequence is generated over the remaining bandwidth.

With reference to the first aspect of the present invention, in a third implementation manner of the first aspect of the present invention, before the step of the transmitting end device loading data on unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe, the method further includes:

and the transmitting terminal equipment superposes and loads a fourth reference signal on the symbol occupied by the synchronous signal in the synchronous signal subframe and/or the synchronous control channel subframe.

With reference to the first aspect of the present invention, in a fourth implementation manner of the first aspect of the present invention, before the step of the transmitting end device loading data on unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe, the method further includes:

and the transmitting terminal equipment loads a fifth reference signal in the synchronous signal subframe and/or the synchronous control channel subframe and at a position outside the bandwidth of the synchronous signal or the synchronous control channel.

With reference to the fourth implementation manner of the first aspect of the present invention, in a fifth implementation manner of the first aspect of the present invention, the loading, by the transmitting end device, a fifth reference signal at a position outside a bandwidth of the synchronization signal or the synchronization control channel in the synchronization signal subframe and/or the synchronization control channel subframe specifically includes:

the transmitting terminal equipment generates a demodulation reference sequence on the bandwidth of data in the synchronous signal subframe and/or the synchronous control channel subframe, deletes the part of the demodulation reference sequence on the bandwidth of the data, which is overlapped with the bandwidth of the synchronous signal or the control channel, and places the rest part of the demodulation reference sequence at a corresponding position to generate the fifth reference signal;

or, the transmitting end device generates the fifth reference signal at a position on the bandwidth of the data in the synchronization signal subframe and/or the synchronization control channel subframe, where the position is not overlapped with the bandwidth of the synchronization signal or the synchronization control channel.

With reference to the first aspect of the present embodiment, in a sixth implementation manner of the first aspect of the present embodiment, before the step of the transmitting end device loading data on unoccupied resources in the synchronization signal subframe and/or the control channel subframe, the method further includes:

the transmitting terminal equipment judges whether each synchronization source in a discovery group is a quasi co-station QCL (quasi co-location QCL), wherein the QCL is used for indicating that signals sent by a plurality of transmitting terminal equipment in the discovery group can be approximate to signals from the same site, and the synchronization source comprises the transmitting terminal equipment and receiving terminal equipment in the discovery group;

when the QCL is determined to be established among the synchronous sources in the discovery group, a demodulation reference signal is not loaded on the synchronous signal subframe or the synchronous control channel subframe, or a fifth reference signal is loaded at a position outside the bandwidth of the synchronous signal or the synchronous control channel;

when determining that the QCL is not set between the synchronization sources in the transmission group, a fourth reference signal is superimposed and loaded on a symbol occupied by the synchronization signal in the synchronization signal subframe and/or the synchronization control channel subframe, or, loading a first reference signal on a symbol which is not occupied by a synchronization signal and is located at a position different from the synchronization signal in a synchronization signal subframe excluding a synchronization control channel, loading a second reference signal on a symbol which is not occupied by a synchronous control channel and is located at a position different from the synchronous control channel in a synchronous control channel subframe which does not include the synchronous signal, in a synchronization signal subframe or a synchronization control channel subframe including both a synchronization signal and a synchronization control channel, and loading a third reference signal on a symbol which is not occupied by the synchronous signal and the synchronous control channel and is in a position different from the synchronous signal and the synchronous control channel.

With reference to the sixth implementation manner of the first aspect of the embodiment of the present invention, in the seventh implementation manner of the first aspect of the embodiment of the present invention, 8, the method according to claim 7, wherein before the step of determining, by the transmitting end device, whether each synchronization source in the discovery group is a quasi co-sited QCL, the method further includes:

determining whether the transmitting end equipment is a synchronous source transmitter;

when the transmitting terminal equipment is determined not to be a synchronous source transmitter, triggering the transmitting terminal equipment to judge whether each synchronous source in a discovery group is a quasi co-station QCL;

when the transmitting terminal equipment is determined to be a synchronous source transmitter, not loading a demodulation reference signal on the synchronous signal subframe or the synchronous control channel subframe, or loading a fifth reference signal on a position outside the bandwidth of the synchronous signal or the synchronous control channel, or loading a fourth reference signal on a symbol occupied by the synchronous signal in the synchronous signal subframe and/or the synchronous control channel subframe in a superposition manner, or loading a first reference signal on a symbol which is not occupied by the synchronous signal and is at a position different from the synchronous signal in the synchronous signal subframe not including the synchronous control channel, loading a second reference signal on a symbol which is not occupied by the synchronous control channel and is at a position different from the synchronous control channel in the synchronous control channel subframe not including the synchronous signal, and loading the second reference signal in the synchronous signal subframe or the synchronous control channel subframe including both the synchronous signal and the synchronous control channel, and loading a third reference signal on a symbol which is not occupied by the synchronous signal and the synchronous control channel and is in a position different from the synchronous signal and the synchronous control channel.

With reference to the first aspect of the embodiment of the present invention to the seventh implementation manner of the first aspect, in an eighth implementation manner of the first aspect of the embodiment of the present invention, the data is data of a D2D link or data of a cellular link.

With reference to the first aspect to the eighth implementation manner of the first aspect of the present embodiment, in a ninth implementation manner of the first aspect of the present embodiment, when the data is cellular link data, the transmitting end device is a cellular link terminal, and the receiving end device is a base station, before the step of determining, by the transmitting end device, an unoccupied resource in a synchronization signal subframe and/or a synchronization control channel subframe of device-to-device D2D, the method further includes:

the cellular terminal receives first indication information sent by the base station, wherein the first indication information is used for indicating whether a subframe currently transmitted by the cellular terminal is a synchronous signal subframe and/or a synchronous control channel subframe;

when the first indication information indicates that the currently transmitted subframe is a synchronization signal subframe and/or a synchronization control channel subframe, triggering the transmitting terminal device to determine unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe of the device-to-device D2D.

With reference to the first aspect of the present invention to the ninth implementation manner of the first aspect, in a tenth implementation manner of the first aspect of the present invention, before the step of loading, by the transmitting end device, data on unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe, the method further includes:

and the transmitting terminal equipment performs rate matching on the unoccupied resources in the synchronous signal subframe and/or the synchronous control channel.

With reference to the first aspect of the embodiment of the present invention to the tenth implementation manner of the first aspect, in an eleventh implementation manner of the first aspect of the embodiment of the present invention, the unoccupied resources include:

subframes, symbols or bandwidth not occupied by the synchronization signal and/or synchronization control channel.

With reference to the first aspect of the embodiment of the present invention to the eleventh implementation manner of the first aspect, in a twelfth implementation manner of the first aspect of the embodiment of the present invention, when a bandwidth of the data is greater than a bandwidth of the synchronization signal or the synchronization control channel, the bandwidth of the data does not span the bandwidth of the synchronization signal or the synchronization control channel; when the bandwidth of the data is less than the bandwidth of the synchronization signal or the synchronization control channel, the bandwidth of the data is within the bandwidth of the synchronization signal or the synchronization control channel.

With reference to the first aspect of the present invention to the twelfth implementation manner of the first aspect, in a thirteenth implementation manner of the first aspect of the present invention, the synchronization signal includes a primary synchronization signal and a secondary synchronization signal, each synchronization signal subframe includes two front and back slots, each slot includes six symbols 0 to 5 in the synchronization signal subframe of the extended cyclic prefix CP, and each slot includes seven symbols 0 to 6 in the synchronization signal subframe of the normal cyclic prefix CP;

the positions of the symbols occupied by the synchronization signal in the synchronization signal subframe include:

the intervals of the master synchronizing signal and the slave synchronizing signal in the front time slot and the back time slot are the same;

when the synchronous signal subframe is a synchronous signal subframe of an extended Cyclic Prefix (CP), the primary synchronous signal and the secondary synchronous signal occupy a symbol 1 and a symbol 2 in the front and the back two time slots of the synchronous signal subframe;

or, when the synchronization signal subframe is a synchronization signal subframe of an extended Cyclic Prefix (CP), the primary synchronization signal and the secondary synchronization signal occupy symbol 1 and symbol 3 in two slots before and after the synchronization signal subframe;

or, when the synchronization signal subframe is a synchronization signal subframe of an extended Cyclic Prefix (CP), the primary synchronization signal and the secondary synchronization signal occupy symbol 0 and symbol 1 in the previous slot and occupy symbol 3 and symbol 4 in the next slot of the synchronization signal subframe;

or, when the synchronization signal subframe is a synchronization signal subframe of a normal Cyclic Prefix (CP), the primary synchronization signal and the secondary synchronization signal occupy symbol 2 and symbol 3 in two slots before and after the synchronization signal subframe;

or, when the synchronization signal subframe is a synchronization signal subframe of a normal Cyclic Prefix (CP), the primary synchronization signal and the secondary synchronization signal occupy symbol 2 and symbol 4 in two slots before and after the synchronization signal subframe;

or, when the synchronization signal subframe is a synchronization signal subframe of a normal cyclic prefix CP, the primary synchronization signal and the secondary synchronization signal occupy symbol 0 and symbol 1 in the previous slot and occupy symbol 4 and symbol 5 in the subsequent slot of the synchronization signal subframe.

With reference to the first aspect of the present invention to the thirteenth implementation manner of the first aspect, in a fourteenth implementation manner of the first aspect of the present invention, each synchronization signal subframe includes two front and back slots, each slot includes six symbols 0 to 5 in the synchronization signal subframe of the extended cyclic prefix CP, and each slot includes seven symbols 0 to 6 in the synchronization signal subframe of the normal cyclic prefix CP;

the synchronization control channel occupies 3 or 4 symbols different from the synchronization signal position in the synchronization signal subframe.

With reference to the first aspect of the present invention to the fourteenth implementation manner of the first aspect, in a fifteenth implementation manner of the first aspect of the present invention, the synchronization control channel includes: the device comprises a first synchronous control channel and a second synchronous control channel, wherein the first synchronous control channel is loaded by first transmitting terminal equipment, and the second synchronous control channel is loaded by second transmitting terminal equipment.

With reference to the fifteenth implementation manner of the first aspect of the embodiment of the present invention, in a sixteenth implementation manner of the first aspect of the embodiment of the present invention,

the first synchronous control channel and the second synchronous control channel occupy different synchronous signal subframes;

or the first synchronization control channel and the second synchronization control channel occupy different symbols in the same synchronization signal subframe.

With reference to the fifteenth implementation manner or the sixteenth implementation manner of the first aspect of the embodiment of the present invention, in a seventeenth implementation manner of the first aspect of the embodiment of the present invention, the position occupied by the synchronization control channel is associated with a predefined parameter;

when the predefined parameter is a synchronization source hop count, the synchronization source hop count of the first transmitting end equipment and the synchronization source hop count of the second transmitting end equipment are different;

when the predefined parameter is a synchronization source identifier, the synchronization source identifiers used by the first transmitting end device and the second transmitting end device are different.

A second aspect of the embodiments of the present invention provides a signal receiving method, including:

receiving end equipment receives data loaded in a synchronous signal subframe and/or a synchronous control channel subframe, wherein the data is sent by transmitting end equipment, the synchronous signal subframe is a synchronous signal subframe of D2D, and the synchronous control channel subframe is a synchronous control channel subframe of D2D;

and the receiving terminal equipment analyzes the data in the synchronous signal subframe and/or the synchronous control channel subframe.

With reference to the second aspect of the present invention, in a first implementation manner of the second aspect of the present invention, the analyzing, by the receiving end device, the data in the synchronization signal subframe and/or the synchronization control channel subframe specifically includes:

and the receiving end takes the synchronous signal as a demodulation reference signal of the data and analyzes the data in the synchronous signal subframe and/or the synchronous control channel subframe.

With reference to the second aspect of the present invention, in a second implementation manner of the second aspect of the present invention, the receiving, by the receiving end device, data loaded in a synchronization signal subframe and/or a synchronization control channel subframe and sent by the transmitting end device specifically includes:

the receiving end equipment receives data loaded on a synchronous signal subframe which does not comprise a synchronous control channel and a first reference signal, wherein the first reference signal is loaded on a symbol which is not occupied by a synchronous signal and is in a position different from the synchronous signal in the synchronous signal subframe which does not comprise the synchronous control channel;

the receiving end equipment receives data loaded on a synchronous control channel subframe which does not comprise a synchronous signal and a second reference signal, wherein the second reference signal is recorded on a symbol which is not occupied by the synchronous control channel and is at a position different from the synchronous control channel in the synchronous control channel subframe;

the receiving end equipment receives data and a third reference signal loaded on a synchronous signal subframe or a synchronous control channel subframe comprising a synchronous signal and a synchronous control channel, wherein the third reference signal is loaded on a symbol which is not occupied by the synchronous signal and the synchronous control channel and is in a position different from the positions of the synchronous signal and the synchronous control channel in the synchronous signal subframe or the synchronous control channel subframe;

the analyzing, by the receiving end device, the data in the synchronization signal subframe and/or the synchronization control channel subframe specifically includes:

in a synchronization signal subframe which does not comprise a synchronization control channel, the receiving end uses the first reference signal as a demodulation reference signal of the data to analyze the data in the synchronization signal subframe which does not comprise the synchronization control channel;

in a synchronous control channel subframe which does not comprise a synchronous signal, the receiving end uses the second reference signal as a demodulation reference signal of the data to analyze the data in the synchronous control channel subframe which does not comprise the synchronous signal;

on a synchronization signal subframe or a synchronization control channel subframe including a synchronization signal and a synchronization control channel, the receiving end uses the third reference signal as a demodulation reference signal of the data to resolve the data in the synchronization signal subframe or the synchronization control channel subframe including the synchronization signal and the synchronization control channel.

With reference to the second aspect of the present invention, in a third implementation manner of the second aspect of the present invention, the receiving, by the receiving end device, data loaded in a synchronization signal subframe and/or a synchronization control channel subframe and sent by the transmitting end device specifically includes:

the receiving end equipment receives data and a fourth reference signal loaded in a synchronous signal subframe and/or a synchronous control channel subframe, and the fourth reference signal is superposed and loaded on a symbol occupied by the synchronous signal;

and the receiving end uses the fourth reference signal as a demodulation reference signal of the data to analyze the data in the synchronous signal subframe and/or the synchronous control channel subframe.

With reference to the second aspect of the present invention, in a fourth implementation manner of the second aspect of the present invention, the receiving, by the receiving end device, data loaded in a synchronization signal subframe and/or a synchronization control channel subframe and sent by the transmitting end device specifically includes:

the receiving end equipment receives data and a fifth reference signal loaded in a synchronous signal subframe and/or a synchronous control channel subframe, wherein the fifth reference signal is loaded at a position outside the bandwidth of the synchronous signal or the synchronous control channel in the synchronous signal subframe and/or the synchronous control channel subframe;

in a synchronization signal subframe or a synchronization control channel subframe including a synchronization signal, the receiving end device uses the third reference signal and the synchronization signal as demodulation reference signals of the data to resolve the data in the synchronization signal subframe or the synchronization control channel subframe including the synchronization signal;

in the synchronization control channel subframe not including the synchronization signal, the receiving end device uses the third reference signal as a demodulation reference signal for data outside the bandwidth of the synchronization control channel, uses a demodulation reference signal dedicated to the synchronization control channel as a demodulation reference signal for data within the bandwidth of the synchronization control channel, and parses the data in the synchronization control channel subframe not including the synchronization signal.

With reference to the second aspect of the present invention, in a fifth implementation manner of the second aspect of the present invention, before the receiving end device receives data loaded in a synchronization signal subframe and/or a synchronization control channel subframe, where the data is sent by a sending end device, the receiving end device further includes:

the receiving end device receives an indication signaling sent by the transmitting end device, where the indication signaling is used to indicate whether each synchronization source in a discovery group is a QCL, the QCL is used to indicate that signals sent by multiple transmitting end devices in the discovery group are approximately signals from the same site, and the synchronization source includes the transmitting end device and the receiving end device in the discovery group;

the receiving end device receiving the data loaded in the synchronization signal subframe and/or the synchronization control channel subframe sent by the transmitting end device specifically includes:

when the indication signaling indicates that QCLs are established among the synchronization sources in the discovery group, the receiving end device receives data loaded in a synchronization signal subframe and/or a synchronization control channel subframe, or the receiving end device receives data loaded in a synchronization signal subframe and/or a synchronization control channel subframe and a fifth reference signal, where the fifth reference signal is loaded at a position outside a bandwidth of a synchronization signal or a synchronization control channel in the synchronization signal subframe and/or the synchronization control channel subframe;

when the indication signaling indicates that the QCL is not set between the synchronization sources in the discovery group, the receiving end device receives data and a first reference signal loaded on a synchronization signal subframe not including a synchronization control channel, the first reference signal being loaded on a symbol which is not occupied by a synchronization signal and is in a position different from the synchronization signal in the synchronization signal subframe not including the synchronization control channel, the receiving end device receives data and a second reference signal loaded on a synchronization control channel subframe not including the synchronization signal, the second reference signal being recorded on a symbol which is not occupied by the synchronization control channel and is in a position different from the synchronization control channel in the synchronization control channel subframe, the receiving end device receives data and a third reference signal loaded on a synchronization signal subframe or a synchronization control channel subframe including the synchronization signal and the synchronization control channel, the third reference signal is loaded on a symbol which is not occupied by the synchronous signal and the synchronous control channel in the synchronous signal subframe or the synchronous control channel subframe and is at a position different from the positions of the synchronous signal and the synchronous control channel, or the receiving end equipment receives data and a fourth reference signal loaded in the synchronous signal subframe and/or the synchronous control channel subframe, and the fourth reference signal is loaded on the symbol occupied by the synchronous signal in a superposed manner;

when the indication signaling indicates that QCL is between the synchronization sources in the discovery group, the receiving end uses a synchronization signal as a demodulation reference signal of the data to resolve the data in the synchronization signal subframe and/or the synchronization control channel subframe, or, in a synchronization signal subframe or a synchronization control channel subframe including a synchronization signal, the receiving end device uses the third reference signal and the synchronization signal as demodulation reference signals of the data to resolve the data in the synchronization signal subframe or the synchronization control channel subframe including the synchronization signal, and in a synchronization control channel subframe not including the synchronization signal, the receiving end device uses the third reference signal as a demodulation reference signal of data outside the bandwidth of the synchronization control channel and uses a demodulation reference signal dedicated to the synchronization control channel as a demodulation reference signal of data within the bandwidth of the synchronization control channel, analyzing the data in the synchronous control channel subframe which does not comprise the synchronous signal;

when the indication signaling indicates that the difference between the synchronization sources in the discovery group is not QCL, the receiving end device uses the first reference signal as a demodulation reference signal of the data to resolve the data in the synchronization signal subframe excluding the synchronization control channel in a synchronization signal subframe excluding the synchronization control channel, uses the second reference signal as a demodulation reference signal of the data in a synchronization control channel subframe excluding the synchronization signal to resolve the data in the synchronization control channel subframe excluding the synchronization signal, and uses the third reference signal as a demodulation reference signal of the data on a synchronization signal subframe or a synchronization control channel subframe including the synchronization signal and the synchronization control channel to resolve the data in the synchronization signal subframe or the synchronization control channel subframe including the synchronization signal and the synchronization control channel, or, the receiving end device uses the fourth reference signal as a demodulation reference signal of the data to resolve the data in the synchronization signal subframe and/or the synchronization control channel subframe.

With reference to the second aspect of the embodiment of the present invention to the fifth implementation manner of the second aspect, in a sixth implementation manner of the second aspect of the embodiment of the present invention, the data is D2D data or cellular data.

With reference to the second aspect to the sixth implementation manner of the second aspect of the present invention, in the seventh implementation manner of the second aspect of the present invention, when the data is cellular link data, the transmitting end device is a base station, and the receiving end device is a cellular link terminal, before the step of the receiving end device receiving the data loaded in the synchronization signal subframe and/or the synchronization control channel subframe and sent by the transmitting end device, the method further includes:

the cellular link terminal receives second indication information sent by the base station, wherein the second indication information is used for indicating whether a subframe currently received by the cellular link terminal is a synchronous signal subframe and/or a synchronous control channel subframe;

and when the second indication information indicates that the currently received subframe is a synchronous signal subframe and/or a synchronous control channel subframe, triggering the receiving end equipment to receive the data loaded in the synchronous signal subframe and/or the synchronous control channel subframe, which is sent by the transmitting end equipment.

A third aspect of the embodiments of the present invention provides a transmitting end device, including:

a determining module, configured to determine unoccupied resources in a synchronization signal subframe and/or a synchronization control channel subframe of the device-to-device D2D, where the synchronization signal subframe includes a synchronization signal and the synchronization control channel subframe includes a synchronization control channel;

a data loading module, configured to load data on unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe determined by the determining module;

and the sending module is used for sending the data loaded by the data loading module to receiving end equipment.

With reference to the third aspect of the embodiment of the present invention, in a first implementation manner of the third aspect of the embodiment of the present invention, the transmitting apparatus further includes:

a first reference loading module, configured to load, when a synchronization control channel is not included in the synchronization signal subframe, a first reference signal on a symbol that is not occupied by a synchronization signal and is at a position different from that of the synchronization signal in the synchronization signal subframe;

a second reference loading module, configured to load, in the synchronization control channel subframe, a second reference signal on a symbol that is not occupied by a synchronization control channel and is located at a position different from that of the synchronization control channel, when the synchronization control channel subframe does not include a synchronization signal;

and the third reference loading module is used for loading a third reference signal on a symbol which is not occupied by the synchronous signal and the synchronous control channel and is different from the symbol of the synchronous signal and the synchronous control channel in the synchronous signal subframe or the synchronous control channel subframe when the synchronous signal subframe or the synchronous control channel subframe comprises the synchronous signal and the synchronous control channel.

With reference to the first implementation manner of the third aspect of the embodiment of the present invention, in a second implementation manner of the third aspect of the embodiment of the present invention, the transmitting end device further includes:

a sequence generating module for generating a uniquely determined sequence corresponding to the first reference signal, the second reference signal or the third reference signal over a bandwidth of the data, or generating a first portion of the uniquely determined sequence corresponding to the first reference signal, the second reference signal or the third reference signal over a bandwidth in which the synchronization signal or the synchronization control channel is located, and generating a second portion of the sequence over the remaining bandwidth.

With reference to the third aspect of the embodiment of the present invention, in a third implementation manner of the third aspect of the embodiment of the present invention, the transmitting end device further includes:

and the fourth reference loading module is used for loading a fourth reference signal in a superposition manner on the symbol occupied by the synchronous signal in the synchronous signal subframe and/or the synchronous control channel subframe.

With reference to the third aspect of the embodiment of the present invention, in a fourth implementation manner of the third aspect of the embodiment of the present invention, the transmitting end device further includes:

and the fifth reference loading module is used for loading a fifth reference signal at a position outside the bandwidth of the synchronous signal or the synchronous control channel in the synchronous signal subframe and/or the synchronous control channel subframe.

With reference to the fourth implementation manner of the third aspect of the present invention, in a fifth implementation manner of the third aspect of the present invention, the fifth reference loading module is specifically configured to generate a demodulation reference sequence on a bandwidth of data in the synchronization signal subframe and/or the synchronization control channel subframe, delete a part of the demodulation reference sequence on the bandwidth of the data, which overlaps with the bandwidth of the synchronization signal or the control channel, and place a remaining part of the demodulation reference sequence at a corresponding position to generate the fifth reference signal, or generate the fifth reference signal at a position, which does not overlap with the bandwidth of the synchronization signal or the synchronization control channel, in the bandwidth of the data in the synchronization signal subframe and/or the synchronization control channel subframe.

With reference to the third aspect of the embodiment of the present invention, in a sixth implementation manner of the third aspect of the embodiment of the present invention, the transmitting end device further includes:

the quasi-station judging module is used for judging whether each synchronization source in a discovery group is a quasi co-station QCL (quasi co-station QCL), the QCL is used for indicating that signals sent by a plurality of transmitting terminal devices in the discovery group can be approximate to signals from the same station, and the synchronization source comprises the transmitting terminal devices and receiving terminal devices in the discovery group;

a sixth reference loading module, configured to, when it is determined that QCLs exist between synchronization sources in the discovery group, not load a demodulation reference signal on the synchronization signal subframe or the synchronization control channel subframe, or load a fifth reference signal at a position outside a bandwidth of the synchronization signal or the synchronization control channel;

a seventh reference loading module for loading the QCL of each synchronization source in the transmission set, and a fourth reference signal is superposed and loaded on the symbol occupied by the synchronous signal in the synchronous signal subframe and/or the synchronous control channel subframe, or, loading a first reference signal on a symbol which is not occupied by a synchronization signal and is located at a position different from the synchronization signal in a synchronization signal subframe excluding a synchronization control channel, loading a second reference signal on a symbol which is not occupied by a synchronous control channel and is located at a position different from the synchronous control channel in a synchronous control channel subframe which does not include the synchronous signal, in a synchronization signal subframe or a synchronization control channel subframe including both a synchronization signal and a synchronization control channel, and loading a third reference signal on a symbol which is not occupied by the synchronous signal and the synchronous control channel and is in a position different from the synchronous signal and the synchronous control channel.

With reference to the sixth implementation manner of the third aspect of the embodiment of the present invention, in a seventh implementation manner of the third aspect of the embodiment of the present invention, the transmitting end device further includes:

a synchronization source determining module, configured to determine whether the transmitting end device is a synchronization source transmitter;

the first triggering module is used for triggering the quasi-station judging module when the transmitting terminal equipment is determined not to be a synchronous source transmitter;

an eighth reference loading module, configured to, when it is determined that the transmitting end device is a synchronization source transmitter, not load a demodulation reference signal on the synchronization signal subframe or the synchronization control channel subframe, or load a fifth reference signal on a position outside a bandwidth of the synchronization signal or the synchronization control channel, or superimpose and load a fourth reference signal on a symbol occupied by the synchronization signal in the synchronization signal subframe and/or the synchronization control channel subframe, or load a first reference signal on a symbol unoccupied by the synchronization signal and at a position different from the synchronization signal in a synchronization signal subframe that does not include the synchronization control channel, load a second reference signal on a symbol unoccupied by the synchronization control channel and at a position different from the synchronization control channel in a synchronization control channel subframe that does not include the synchronization signal, and load a second reference signal in a synchronization signal subframe or a synchronization control channel subframe that includes both the synchronization signal and the synchronization control channel, and loading a third reference signal on a symbol which is not occupied by the synchronous signal and the synchronous control channel and is in a position different from the synchronous signal and the synchronous control channel.

With reference to the third aspect to the seventh implementation manner of the third aspect of the present invention, in an eighth implementation manner of the third aspect of the present invention, when the data is cellular link data, the transmitting end device is a cellular link terminal, and the receiving end device is a base station, the transmitting end device further includes:

a receiving module, configured to receive first indication information sent by the base station, where the first indication information is used to indicate whether a subframe currently transmitted by the cellular terminal is a synchronization signal subframe and/or a synchronization control channel subframe;

the second triggering module is used for triggering the determining module when the first indication information indicates that the currently transmitted subframe is a synchronous signal subframe and/or a synchronous control channel subframe;

with reference to the third aspect of the present embodiment to the eighth implementation manner of the third aspect, in a ninth implementation manner of the third aspect of the present embodiment, the transmitting end device further includes:

and the rate matching module is used for performing rate matching on the unoccupied resources in the synchronous signal subframe and/or the synchronous control channel.

A fourth aspect of the present invention provides a receiving end device, including:

a first receiving module, configured to receive data loaded in a synchronization signal subframe and/or a synchronization control channel subframe, where the synchronization signal subframe is a synchronization signal subframe of D2D, and the synchronization control channel subframe is a synchronization control channel subframe of D2D, and the synchronization control channel subframe is a synchronization control channel subframe of D2 3578;

and the analysis module is used for analyzing the data in the synchronous signal subframe and/or the synchronous control channel subframe.

With reference to the fourth aspect of the present invention, in a first implementation manner of the fourth aspect of the present invention, the parsing module is specifically configured to parse the data in the synchronization signal subframe and/or the synchronization control channel subframe by using a synchronization signal as a demodulation reference signal of the data.

With reference to the fourth aspect of the embodiment of the present invention, in a second implementation manner of the fourth aspect of the embodiment of the present invention, the first receiving module specifically includes:

a first receiving unit, configured to receive data and a first reference signal loaded on a synchronization signal subframe that does not include a synchronization control channel, where the first reference signal is loaded on a symbol that is not occupied by a synchronization signal and is in a position different from the synchronization signal in the synchronization signal subframe that does not include the synchronization control channel;

a second receiving unit, configured to receive data and a second reference signal loaded on a synchronization control channel subframe that does not include a synchronization signal, where the second reference signal is recorded on a symbol that is not occupied by a synchronization control channel and is at a position different from that of the synchronization control channel in the synchronization control channel subframe;

a third receiving unit, configured to receive data and a third reference signal loaded on a synchronization signal subframe or a synchronization control channel subframe including a synchronization signal and a synchronization control channel, where the third reference signal is loaded on a symbol which is not occupied by the synchronization signal and the synchronization control channel and is in a position different from the synchronization signal and the synchronization control channel in the synchronization signal subframe or the synchronization control channel subframe;

the analysis module specifically comprises:

a first parsing unit, configured to parse the data in a synchronization signal subframe that does not include a synchronization control channel, using the first reference signal as a demodulation reference signal of the data in the synchronization signal subframe that does not include the synchronization control channel;

a second parsing unit, configured to parse the data in the synchronization control channel subframe that does not include the synchronization signal, using the second reference signal as a demodulation reference signal of the data in the synchronization control channel subframe that does not include the synchronization signal;

and the third analyzing unit is used for analyzing the data in the synchronous signal subframe or the synchronous control channel subframe comprising the synchronous signal and the synchronous control channel by using the third reference signal as a demodulation reference signal of the data on the synchronous signal subframe or the synchronous control channel subframe comprising the synchronous signal and the synchronous control channel.

With reference to the fourth aspect of the present invention, in a third implementation manner of the fourth aspect of the present invention, the first receiving module is specifically configured to receive data and a fourth reference signal loaded in a synchronization signal subframe and/or a synchronization control channel subframe, where the fourth reference signal is superimposed and loaded on a symbol occupied by a synchronization signal;

the parsing module is specifically configured to parse the data in the synchronization signal subframe and/or the synchronization control channel subframe by using the fourth reference signal as a demodulation reference signal of the data.

With reference to the fourth aspect of the present invention, in a fourth implementation manner of the fourth aspect of the present invention, the first receiving module is specifically configured to receive data and a fifth reference signal loaded in a synchronization signal subframe and/or a synchronization control channel subframe, where the fifth reference signal is loaded at a position outside a bandwidth of a synchronization signal or a synchronization control channel in the synchronization signal subframe and/or the synchronization control channel subframe;

the analysis module specifically comprises:

a fourth parsing unit, configured to parse the data in the synchronization signal subframe or the synchronization control channel subframe including the synchronization signal, using the third reference signal and the synchronization signal as demodulation reference signals of the data in the synchronization signal subframe or the synchronization control channel subframe including the synchronization signal;

and a fifth parsing unit, configured to parse the data in the synchronization control channel subframe that does not include the synchronization signal, by using the third reference signal as a demodulation reference signal for data outside a bandwidth of the synchronization control channel, and by using a demodulation reference signal dedicated to the synchronization control channel as a demodulation reference signal for data within the bandwidth of the synchronization control channel.

With reference to the fourth aspect of the present embodiment, in a fifth implementation manner of the fourth aspect of the present embodiment, the receiving end device further includes:

a second receiving module, configured to receive an indication signaling sent by the transmitting end device, where the indication signaling is used to indicate whether each synchronization source in a discovery group is a QCL, where the QCL is used to indicate that signals sent by multiple transmitting end devices in the discovery group are approximately signals from a same site, and the synchronization source includes the transmitting end device and a receiving end device in the discovery group;

the first receiving module specifically includes:

a fourth receiving unit, configured to receive, when the indication signaling indicates that QCLs are used among synchronization sources in the discovery group, data loaded in a synchronization signal subframe and/or a synchronization control channel subframe, or receive data loaded in the synchronization signal subframe and/or the synchronization control channel subframe and a fifth reference signal, where the fifth reference signal is loaded at a position outside a bandwidth of a synchronization signal or a synchronization control channel in the synchronization signal subframe and/or the synchronization control channel subframe;

a fifth receiving unit, configured to receive, when the indication signaling indicates that each synchronization source in the discovery group is not QCL, data and a first reference signal loaded on a synchronization signal subframe that does not include a synchronization control channel, the first reference signal being loaded on a symbol that is not occupied by a synchronization signal and is in a different position from the synchronization signal in the synchronization signal subframe that does not include the synchronization control channel, receive data and a second reference signal loaded on a synchronization control channel subframe that does not include the synchronization signal, the second reference signal being recorded on a symbol that is not occupied by a synchronization control channel and is in a different position from the synchronization control channel in the synchronization control channel subframe, receive data and a third reference signal loaded on a synchronization signal subframe or a synchronization control channel subframe that includes the synchronization signal and the synchronization control channel, and the third reference signal being loaded on the synchronization signal subframe or the synchronization control channel subframe that is not occupied by the synchronization signal and the synchronization signal The method comprises the steps that a control channel occupies symbols at different positions from a synchronous signal and a synchronous control channel, or data and a fourth reference signal loaded in a synchronous signal subframe and/or a synchronous control channel subframe are received, and the fourth reference signal is superposed and loaded on the symbols occupied by the synchronous signal;

the analysis module specifically comprises:

a sixth parsing module, configured to, when the indication signaling indicates QCL is between the synchronization sources in the discovery group, parse the data in the synchronization signal subframe and/or the synchronization control channel subframe using a synchronization signal as a demodulation reference signal for the data, or, in a synchronization signal subframe or a synchronization control channel subframe including a synchronization signal, parse the data in the synchronization signal subframe or the synchronization control channel subframe including a synchronization signal using the third reference signal and the synchronization signal as demodulation reference signals for the data, in a synchronization control channel subframe not including a synchronization signal, use the third reference signal as a demodulation reference signal for data outside a bandwidth of a synchronization control channel, and use a demodulation reference signal dedicated to the synchronization control channel as a demodulation reference signal for data within the bandwidth of the synchronization control channel, analyzing the data in the synchronous control channel subframe which does not comprise the synchronous signal;

a seventh parsing module, configured to, when the indication signaling indicates that QCL is not set between synchronization sources in the discovery group, parse the data in a synchronization signal subframe that does not include a synchronization control channel using the first reference signal as a demodulation reference signal for the data in a synchronization signal subframe that does not include the synchronization control channel, parse the data in a synchronization control channel subframe that does not include the synchronization signal using the second reference signal as a demodulation reference signal for the data in a synchronization control channel subframe that does not include the synchronization signal, parse the data in a synchronization signal subframe or a synchronization control channel subframe that includes the synchronization signal and the synchronization control channel using the third reference signal as a demodulation reference signal for the data on the synchronization signal subframe or the synchronization control channel subframe that includes the synchronization signal and the synchronization control channel, or, the data in the synchronization signal subframe and/or the synchronization control channel subframe is analyzed by using the fourth reference signal as a demodulation reference signal of the data.

With reference to the fourth aspect to the fifth implementation manner of the fourth aspect of the present invention, in a sixth implementation manner of the fourth aspect of the present invention, when the data is cellular link data, the transmitting end device is a base station, and the receiving end device is a cellular link terminal, the receiving end device further includes:

a third receiving module, configured to receive second indication information sent by the base station, where the second indication information is used to indicate whether a currently received subframe of the cellular link terminal is a synchronization signal subframe and/or a synchronization control channel subframe;

and the third triggering module is used for triggering the first receiving module when the second indication information indicates that the currently received subframe is a synchronous signal and/or a synchronous control channel subframe.

A fifth aspect of the present invention provides a sending-end device, including:

an input device, an output device, a processor and a memory;

the processor is used for executing the following operations by calling the operation instructions stored in the memory:

determining unoccupied resources in a synchronization signal subframe and/or a synchronization control channel subframe of the device-to-device D2D, wherein the synchronization signal subframe comprises a synchronization signal and the synchronization control channel subframe comprises a synchronization control channel;

loading data on unoccupied resources in the synchronization signal sub-frame and/or the synchronization control channel sub-frame determined by the determination module;

and sending the data loaded by the data loading module to receiving end equipment.

With reference to the fifth aspect of the embodiment, in a first implementation manner of the fifth aspect of the embodiment, the processor is further configured to perform the following operations:

when the synchronous signal subframe does not comprise a synchronous control channel, loading a first reference signal on a symbol which is not occupied by a synchronous signal and is at a position different from the synchronous signal in the synchronous signal subframe;

when the synchronous control channel subframe does not comprise a synchronous signal, loading a second reference signal on a symbol which is not occupied by the synchronous control channel and is at a position different from the synchronous control channel in the synchronous control channel subframe;

when the synchronization signal subframe or the synchronization control channel subframe comprises both the synchronization signal and the synchronization control channel, a symbol which is not occupied by the synchronization signal and the synchronization control channel and is at a position different from the synchronization signal and the synchronization control channel is loaded with a third reference signal in the synchronization signal subframe or the synchronization control channel subframe.

With reference to the first implementation manner of the fifth aspect of the embodiment of the present invention, in a second implementation manner of the fifth aspect of the embodiment of the present invention, the processor is further configured to perform the following operations:

generating a uniquely determined sequence corresponding to the first, second or third reference signal over a bandwidth of the data, or generating a first portion of the uniquely determined sequence corresponding to the first, second or third reference signal over a bandwidth of the synchronization signal or synchronization control channel and generating a second portion of the sequence over the remaining bandwidth.

With reference to the fifth aspect of the embodiment, in a third implementation manner of the fifth aspect of the embodiment, the processor is further configured to perform the following operations:

and superposing and loading a fourth reference signal on a symbol occupied by the synchronous signal in the synchronous signal subframe and/or the synchronous control channel subframe.

With reference to the fifth aspect of the embodiment, in a fourth implementation manner of the fifth aspect of the embodiment, the processor is further configured to perform the following operations:

and loading a fifth reference signal at a position outside the bandwidth of the synchronous signal or the synchronous control channel in the synchronous signal subframe and/or the synchronous control channel subframe.

With reference to the fourth implementation manner of the fifth aspect of the embodiment of the present invention, in a fifth implementation manner of the fifth aspect of the embodiment of the present invention, the processor is specifically configured to perform the following operations:

and generating a demodulation reference sequence on the bandwidth of data in the synchronization signal subframe and/or the synchronization control channel subframe, deleting a part of the demodulation reference sequence on the bandwidth of the data, which is overlapped with the bandwidth of the synchronization signal or the control channel, and putting the rest part of the demodulation reference sequence at a corresponding position to generate the fifth reference signal, or generating the fifth reference signal at a position, which is not overlapped with the bandwidth of the synchronization signal or the synchronization control channel, on the bandwidth of the data in the synchronization signal subframe and/or the synchronization control channel subframe.

With reference to the fifth aspect of the embodiment, in a sixth implementation manner of the fifth aspect of the embodiment, the processor is further configured to perform the following operations:

judging whether each synchronization source in a discovery group is a quasi co-sited QCL, wherein the QCL is used for indicating that signals sent by a plurality of transmitting terminal devices in the discovery group can be approximate to signals from the same site, and the synchronization source comprises the transmitting terminal devices and receiving terminal devices in the discovery group;

With reference to the sixth implementation manner of the fifth aspect of the embodiment of the present invention, in the seventh implementation manner of the fifth aspect of the embodiment of the present invention, 51, the sending end device according to claim 50, wherein the processor is further configured to perform the following operations:

when the transmitting terminal equipment is determined not to be a synchronous source transmitter, triggering the operation of judging whether each synchronous source in the discovery group is a quasi co-station QCL or not;

With reference to the fifth aspect to the seventh implementation manner of the fifth aspect of the present embodiment, in an eighth implementation manner of the fifth aspect of the present embodiment, when the data is cellular link data, the transmitting end device is a cellular link terminal, and the receiving end device is a base station, the processor is further configured to perform the following operations:

receiving first indication information sent by the base station, wherein the first indication information is used for indicating whether a currently transmitted subframe of the cellular terminal is a synchronization signal subframe and/or a synchronization control channel subframe;

when the first indication information indicates that the currently transmitted subframe is a synchronization signal subframe and/or a synchronization control channel subframe, triggering the operation of determining unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe of the device-to-device D2D.

With reference to the fifth aspect to the eighth implementation manner of the fifth aspect of the embodiment of the present invention, in a ninth implementation manner of the fifth aspect of the embodiment of the present invention, the processor is further configured to perform the following operations:

and carrying out rate matching on unoccupied resources in the synchronous signal subframe and/or the synchronous control channel.

A sixth aspect of the present invention provides a receiving end device, including:

an input device, an output device, a processor and a memory;

by calling the operation instructions stored in the memory, the processor is used for executing the following operations:

receiving data loaded in a synchronization signal subframe and/or a synchronization control channel subframe sent by a transmitting terminal device, wherein the synchronization signal subframe is a synchronization signal subframe of D2D, and the synchronization control channel subframe is a synchronization control channel subframe of D2D;

parsing the data in the synchronization signal subframe and/or synchronization control channel subframe.

With reference to the sixth aspect of the embodiment of the present invention, in a first implementation manner of the sixth aspect of the embodiment of the present invention, the processor is specifically configured to perform the following operations:

and taking the synchronous signal as a demodulation reference signal of the data, and analyzing the data in the synchronous signal subframe and/or the synchronous control channel subframe.

With reference to the sixth aspect of the present embodiment, in a second implementation manner of the sixth aspect of the present embodiment, the processor is specifically configured to perform the following operations:

receiving data loaded on a synchronization signal subframe excluding a synchronization control channel and a first reference signal loaded on a symbol which is not occupied by a synchronization signal and is in a position different from the synchronization signal in the synchronization signal subframe excluding the synchronization control channel;

receiving data loaded on a synchronous control channel subframe which does not include a synchronous signal and a second reference signal, wherein the second reference signal is recorded on a symbol which is not occupied by the synchronous control channel and is in a position different from the synchronous control channel in the synchronous control channel subframe;

receiving data and a third reference signal loaded on a synchronization signal subframe or a synchronization control channel subframe including a synchronization signal and a synchronization control channel, the third reference signal being loaded on a symbol which is not occupied by the synchronization signal and the synchronization control channel and is in a position different from the synchronization signal and the synchronization control channel in the synchronization signal subframe or the synchronization control channel subframe;

in a synchronous signal subframe which does not comprise a synchronous control channel, the first reference signal is used as a demodulation reference signal of the data, and the data in the synchronous signal subframe which does not comprise the synchronous control channel is analyzed;

in a synchronous control channel subframe which does not comprise a synchronous signal, using the second reference signal as a demodulation reference signal of the data to analyze the data in the synchronous control channel subframe which does not comprise the synchronous signal;

and analyzing the data in the synchronous signal subframe or the synchronous control channel subframe comprising the synchronous signal and the synchronous control channel by using the third reference signal as a demodulation reference signal of the data on the synchronous signal subframe or the synchronous control channel subframe comprising the synchronous signal and the synchronous control channel.

With reference to the sixth aspect of the embodiment, in a third implementation manner of the sixth aspect of the embodiment, the processor is specifically configured to perform the following operations:

receiving data and a fourth reference signal loaded in a synchronization signal subframe and/or a synchronization control channel subframe, wherein the fourth reference signal is superposed and loaded on a symbol occupied by the synchronization signal;

and analyzing the data in the synchronous signal subframe and/or the synchronous control channel subframe by using the fourth reference signal as a demodulation reference signal of the data.

With reference to the sixth aspect of the embodiment, in a fourth implementation manner of the sixth aspect of the embodiment, the processor is specifically configured to perform the following operations:

receiving data and a fifth reference signal loaded in a synchronization signal subframe and/or a synchronization control channel subframe, wherein the fifth reference signal is loaded at a position out of a bandwidth of a synchronization signal or a synchronization control channel in the synchronization signal subframe and/or the synchronization control channel subframe;

in a synchronous signal subframe or a synchronous control channel subframe which comprises a synchronous signal, using the third reference signal and the synchronous signal as demodulation reference signals of the data to analyze the data in the synchronous signal subframe or the synchronous control channel subframe which comprises the synchronous signal;

and in the synchronous control channel subframe which does not comprise the synchronous signal, using the third reference signal as a demodulation reference signal of data outside the bandwidth of the synchronous control channel, using a demodulation reference signal special for the synchronous control channel as a demodulation reference signal of data inside the bandwidth of the synchronous control channel, and analyzing the data in the synchronous control channel subframe which does not comprise the synchronous signal.

With reference to the sixth aspect of the embodiment, in a fifth implementation manner of the sixth aspect of the embodiment, the processor is further configured to perform the following operations:

receiving an indication signaling sent by the transmitting end device, where the indication signaling is used to indicate whether each synchronization source in a discovery group is a QCL, where the QCL is used to indicate that signals sent by multiple transmitting end devices in the discovery group are approximately signals from the same site, and the synchronization source includes the transmitting end device and a receiving end device in the discovery group;

the processor is specifically configured to perform the following operations:

when the indication signaling indicates that QCLs are among the synchronization sources in the discovery group, receiving data loaded in a synchronization signal subframe and/or a synchronization control channel subframe, or receiving data loaded in the synchronization signal subframe and/or the synchronization control channel subframe and a fifth reference signal, wherein the fifth reference signal is loaded at a position out of the bandwidth of the synchronization signal or the synchronization control channel in the synchronization signal subframe and/or the synchronization control channel subframe;

when the indication signaling indicates that the synchronous sources in the discovery group are not QCL (quaternary clock rate), receiving data and a first reference signal loaded on a synchronous signal subframe not including a synchronous control channel, the first reference signal being loaded on symbols which are not occupied by the synchronous signal and are at a position different from the synchronous signal in the synchronous signal subframe not including the synchronous control channel, receiving data and a second reference signal loaded on a synchronous control channel subframe not including the synchronous signal, the second reference signal being recorded on symbols which are not occupied by the synchronous control channel and are at a position different from the synchronous control channel in the synchronous control channel subframe, receiving data and a third reference signal loaded on a synchronous signal subframe or a synchronous control channel subframe including the synchronous signal and the synchronous control channel, and the third reference signal being loaded on symbols which are not occupied by the synchronous signal and the synchronous control channel in the synchronous signal subframe or the synchronous control channel subframe and are at a position different from the synchronous control channel The method comprises the steps that the synchronous signals and the synchronous control channels are on symbols at different positions, or data and a fourth reference signal loaded in a synchronous signal subframe and/or a synchronous control channel subframe are received, and the fourth reference signal is superposed and loaded on the symbols occupied by the synchronous signals;

when the indication signaling indicates that QCL is established among the synchronization sources in the discovery group, a synchronization signal is used as a demodulation reference signal of the data to analyze the data in the synchronization signal subframe and/or a synchronization control channel subframe, or the third reference signal and the synchronization signal are used as demodulation reference signals of the data in the synchronization signal subframe or the synchronization control channel subframe including the synchronization signal to analyze the data in the synchronization signal subframe or the synchronization control channel subframe including the synchronization signal, the third reference signal is used as a demodulation reference signal of data outside the bandwidth of the synchronization control channel in the synchronization control channel subframe not including the synchronization signal, and a demodulation reference signal special for the synchronization control channel is used as a demodulation reference signal of the data within the bandwidth of the synchronization control channel, analyzing the data in the synchronous control channel subframe which does not comprise the synchronous signal;

when the indication signaling indicates that the QCL is not set between the synchronous sources in the discovery group, in a synchronous signal subframe which does not include a synchronous control channel, the data in the synchronous signal subframe which does not include the synchronous control channel is analyzed by using the first reference signal as a demodulation reference signal of the data, in a synchronous control channel subframe which does not include the synchronous signal, the data in the synchronous control channel subframe which does not include the synchronous signal is analyzed by using the second reference signal as a demodulation reference signal of the data, and in a synchronous signal subframe or a synchronous control channel subframe which includes the synchronous signal and the synchronous control channel, the data in the synchronous signal subframe or the synchronous control channel subframe which includes the synchronous signal and the synchronous control channel is analyzed by using the third reference signal as a demodulation reference signal of the data, or, the data in the synchronization signal subframe and/or the synchronization control channel subframe is analyzed by using the fourth reference signal as a demodulation reference signal of the data.

With reference to the sixth aspect of the present invention to the fifth implementation manner of the sixth aspect, in a sixth implementation manner of the sixth aspect of the present embodiment, the processor is further configured to perform the following operations:

receiving second indication information sent by the base station, wherein the second indication information is used for indicating whether a currently received subframe of the cellular link terminal is a synchronization signal subframe and/or a synchronization control channel subframe;

and when the second indication information indicates that the currently received subframe is a synchronous signal subframe and/or a synchronous control channel subframe, triggering the operation of receiving the data loaded in the synchronous signal subframe and/or the synchronous control channel subframe, which is sent by the transmitting terminal equipment.

According to the technical scheme, the embodiment of the invention has the following advantages: in the embodiment of the invention, the transmitting terminal equipment firstly determines unoccupied resources in the synchronous signal subframe and/or the synchronous control channel subframe of the D2D, loads data on the unoccupied resources in the synchronous signal subframe and/or the synchronous control channel subframe, and then sends the data loaded in the synchronous signal subframe and/or the synchronous control channel subframe to the receiving terminal equipment, so that the unoccupied resources in the synchronous signal subframe of the D2D are effectively utilized, and the utilization rate of the resources by a system is improved.

Drawings

FIG. 1 is a diagram illustrating an example of a relationship between a synchronization signal subframe and a synchronization control channel subframe according to an embodiment of the present invention;

FIG. 2 is a diagram illustrating another example of a relationship between a synchronization signal subframe and a synchronization control channel subframe according to an embodiment of the present invention;

FIG. 3 is a diagram illustrating another example of a relationship between a synchronization signal subframe and a synchronization control channel subframe according to an embodiment of the present invention;

FIG. 4 is a diagram illustrating another example of a relationship between a synchronization signal subframe and a synchronization control channel subframe according to an embodiment of the present invention;

fig. 5 is a schematic diagram illustrating an example of occupied symbol positions of synchronization signals or synchronization control channels in a subframe according to an embodiment of the present invention;

fig. 6 is a schematic diagram of another example of occupied symbol positions of synchronization signals or synchronization control channels in a subframe according to an embodiment of the present invention;

fig. 7 is a schematic diagram of another example of occupied symbol positions of a synchronization signal or a synchronization control channel in a subframe according to an embodiment of the present invention;

fig. 8 is a schematic diagram of another example of occupied symbol positions of synchronization signals or synchronization control channels in a subframe according to an embodiment of the present invention;

FIG. 9 is a diagram illustrating an example of symbol positions occupied by a synchronization control channel and a demodulation reference signal in a synchronization control channel subframe that does not include a synchronization signal according to an embodiment of the present invention;

FIG. 10 is a diagram illustrating another example of occupied symbol positions of a synchronization control channel and a demodulation reference signal in a synchronization control channel subframe that does not include a synchronization signal according to an embodiment of the present invention;

fig. 11 is a flowchart illustrating a signal transmission method according to an embodiment of the present invention;

FIG. 12 is a diagram illustrating an application scenario of the embodiment of the present invention in which unoccupied resources are used in a D2D link;

FIG. 13 is a diagram illustrating an example of the bandwidth of the loaded data within the bandwidth of the synchronization signal or the synchronization control channel according to an embodiment of the present invention;

fig. 14 is a schematic flow chart of a signal transmission method according to an embodiment of the present invention;

fig. 15 is a diagram illustrating an example in which the bandwidth of the loaded data exceeds the bandwidth of the synchronization signal or the synchronization control channel in the embodiment of the present invention;

fig. 16 is a schematic flow chart of a signal transmission method according to an embodiment of the present invention;

fig. 17 is a schematic diagram illustrating an example of loading a first reference signal in a time division manner in a synchronization signal subframe that does not include a synchronization control channel according to an embodiment of the present invention;

FIG. 18 is a diagram illustrating an example of loading a second reference signal in a time-division manner in a synchronization signal subframe that does not include a synchronization control channel according to an embodiment of the present invention;

FIG. 19 is a diagram illustrating an example of loading a third reference signal in a time-division manner in a synchronization signal subframe that does not include a synchronization control channel according to an embodiment of the present invention;

fig. 20 is a schematic flow chart of a signal transmission method according to an embodiment of the present invention;

fig. 21 is a diagram illustrating an example of loading a fourth reference signal on a symbol occupied by a synchronization signal in an embodiment of the present invention;

fig. 22 is a schematic flow chart of a signal transmission method according to an embodiment of the present invention;

fig. 23 is a schematic flow chart of a signal transmission method according to an embodiment of the present invention;

FIG. 24 is a diagram illustrating an application scenario of an embodiment of the present invention in which unoccupied resources are used in a cellular link;

fig. 25 is a schematic flow chart of a signal transmission method according to an embodiment of the present invention;

fig. 26 is a schematic flow chart of a signal receiving method according to an embodiment of the present invention;

fig. 27 is a schematic flow chart of a signal receiving method according to an embodiment of the present invention;

fig. 28 is a schematic flow chart of a signal receiving method according to an embodiment of the present invention;

fig. 29 is a schematic flow chart of a signal receiving method according to an embodiment of the present invention;

fig. 30 is a schematic flow chart of a signal receiving method according to an embodiment of the present invention;

fig. 31 is a schematic flow chart of a signal receiving method according to an embodiment of the present invention;

fig. 32 is a schematic flow chart of a signal receiving method according to an embodiment of the present invention;

FIG. 33 is a diagram illustrating an example of using different synchronization signal sub-frames when different synchronization sources transmit synchronization control channels according to an embodiment of the present invention;

FIG. 34 is a diagram illustrating an example of using different symbols in the same synchronization signal subframe when different synchronization sources transmit synchronization control channels according to an embodiment of the present invention;

FIG. 35 is a diagram illustrating an example of different D2D Sync sources having different current Sync source hop counts in accordance with an embodiment of the present invention;

fig. 36 is a schematic structural diagram of a sending end device in an embodiment of the present invention;

fig. 37 is another schematic structural diagram of a sending end device in an embodiment of the present invention;

fig. 38 is another schematic structural diagram of a sending end device in the embodiment of the present invention;

fig. 39 is a schematic structural diagram of another sending-end device in the embodiment of the present invention;

fig. 40 is a schematic structural diagram of another transmitting end device in the embodiment of the present invention;

fig. 41 is another schematic structural diagram of a sending end device in an embodiment of the present invention;

fig. 42 is another schematic structural diagram of a sending-end device in the embodiment of the present invention;

fig. 43 is a schematic structural diagram of a receiving end device in the embodiment of the present invention;

fig. 44 is a schematic structural diagram of another receiving end device in the embodiment of the present invention;

fig. 45 is a schematic structural diagram of a receiving end device in the embodiment of the present invention;

fig. 46 is a schematic structural diagram of a receiving end device in the embodiment of the present invention;

fig. 47 is a schematic structural diagram of another receiving end device in the embodiment of the present invention;

fig. 48 is a schematic structural diagram of a network device in an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be understood that although the terms first, second, etc. may be used to describe various reference signals or transmitting end devices in embodiments of the present invention, the reference signals or transmitting end devices should not be limited by these terms. These terms are only used to distinguish one device from another using a reference signal or transmitting end device. For example, a first reference signal may also be referred to as a second reference signal, and similarly, a second reference signal may also be referred to as a first reference signal, without departing from the scope of embodiments of the present invention; similarly, the second transmitting end device may also be referred to as a third transmitting end device, and the like, which is not limited in this embodiment of the present invention.

The terminology used in the description of the invention herein is for the purpose of describing particular embodiments and is not intended to be limiting of the invention.

The term "synchronization signal subframe" refers to a subframe containing a synchronization signal, and the term "synchronization control channel subframe" refers to a subframe containing a synchronization control channel, wherein the synchronization control channel may be contained in the synchronization signal subframe, and the synchronization signal may be contained in the synchronization control signal subframe. The Synchronization signals in the present invention, which are device-to-device Synchronization signals of D2D, can be described by using the abbreviation D2DSS (D2D Synchronization Signal ). The Synchronization signals specifically include Primary D2D Synchronization Signal (PD 2DSS) and Secondary D2D Synchronization Signal (SD 2DSS), and the Synchronization control Channel is a Channel through which the Synchronization source transmitter transmits common control and common indication information to the receiver, and may be referred to as a Broadcast control Channel, abbreviated as PD2DSCH (Physical D2D Synchronization Channel ), and may also be referred to as SL-BCH (serial Broadcast Channel). The bandwidth of the PD2DSCH channel is the same as the D2DSS bandwidth. Specifically, the D2DSS active signal occupies 62 data subcarriers of 72 subcarriers in a center 6PRB (Physical Resource Block) and the remaining 10 subcarriers are used as guard subcarriers of the D2 DSS. While the PD2DSCH channel occupies part or all of the bandwidth of 72 sub-carriers in the central 6 PRB. The contents of the control signaling that may be included in the synchronization control channel are: frame number of D2D, TDD configuration, distinguished indication signaling of Time Division Duplex (TDD)/Frequency Division Duplex (FDD), system bandwidth, type of synchronization source, hop count of current location, indication information of transmitting or receiving resource pool, etc. In summary, this synchronization control channel mainly refers to: the common indication information necessary for the receiver of the D2D sync source to receive the used channel is transmitted at the sync source transmitter.

In the embodiment of the present invention, D2DSS is used as an abbreviation of the synchronization signal, PD2DSS is used as an abbreviation of the master D2D synchronization signal, SD2DSS is used as an abbreviation of the slave D2D synchronization signal, and PD2DSCH is used as an abbreviation of the synchronization control channel.

The resources of the subframe include time domain resources and frequency domain resources. On time domain resources, a subframe is divided into two time slots, namely a front time slot and a rear time slot, wherein the front time slot can be called a 1 st time slot, and the rear time slot can be called a 2 nd time slot; each time slot of the sub-frame of the normal cyclic prefix CP is divided into 7 symbols, and the number of the symbols is from 0 to 6; each slot of the sub-frame of the extended cyclic prefix CP is divided into 6 symbols, which are numbered from 0 to 5, and the last symbol of the 2 nd slot of each sub-frame is occupied by GAP (i.e. a portion which is not emitted in the time domain) intervals. I.e. the term "symbol" denotes a part of the time domain resources in a subframe. In a subframe, different frequency domain resources can also be utilized in the same time domain resource.

The term "demodulation reference signal" denotes a reference signal specifically used for demodulating data, and is denoted by the abbreviation DMRS in the embodiment of the present invention.

It is to be understood that each reference signal in the embodiments of the present invention: the first to fifth reference signals are included, and are demodulation reference signals for demodulating the loaded data. When the transmitting-end device is also a synchronization source transmitter, these reference signals may also be used as demodulation reference signals of the synchronization control channel, which is not limited herein.

Some application scenarios of the invention are described first:

the PD2DSCH subframe may be included in the D2DSS subframe or may not be included in the D2DSS subframe, and neither the transmission period of the PD2DSCH subframe nor the transmission period of the D2DSS subframe is limited, which is illustrated in the following cases:

firstly, all PD2DSCH subframes are contained in a D2DSS subframe:

in the first case: referring to fig. 1, for example, a transmission period (i.e., an interval time between every two transmissions) of D2DSS is 40ms, and 4D 2DSS subframes are used as a transmission period of PD2DSCH, in one transmission period of PD2DSCH, 4D 2DSS subframes are transmitted, two consecutive D2DSS subframes can be used to transmit contents of PD2DSCH, and the two D2DSS subframes also include PD2DSCH subframes. For example, in a D2DSS subframe, two symbols are occupied by SD2DSS and PD2DSS, respectively, and in a D2DSS subframe including a PD2DSCH subframe, other symbols are occupied by PD2DSCH except for the symbols occupied by SD2DSS and PD2DSS and the symbols occupied by the guard interval GAP of D2D. In this scenario, in a transmission period of the PD2DSCH, in a symbol of the D2DSS subframe that does not include the PD2DSCH subframe, only 5 symbols are occupied by the SD2DSS, the PD2DSS, and the GAP, and the remaining time-frequency resources are not used, and then 9 symbols are left unused in the D2DSS subframe of the normal cyclic prefix CP.

In the second case: referring to fig. 2, taking the transmission period (i.e. the interval time between every two transmissions) of D2DSS as 40ms, and using 4D 2DSS subframes as the transmission period of one PD2DSCH as an example, but sending a part of PD2DSCH in each D2DSS subframe, for example, in each D2DSS subframe, SD2DSS and PD2DSS occupy 2 symbols, and PD2DSCH occupies 3 symbols, then there are remaining 6 symbols unused in the D2DSS subframe of normal cyclic prefix CP.

In both cases, the PD2DSCH subframes are all contained in D2DSS subframes, each PD2DSCH subframe contains a D2DSS, and each D2DSS subframe contains a PD2 DSCH.

And secondly, the PD2DSCH subframe part is contained in the D2DSS subframe.

In the third case: referring to fig. 3, taking the transmission period of the D2DSS subframe as 40ms and the transmission period of the PD2DSCH subframe as 10ms as an example, the PD2DSCH subframe is equally spaced among 4 subframes located in 40ms, wherein one PD2DSCH subframe is included in the D2DSS subframe and the other PD2DSCH subframes are present separately. In this scenario, of the 4 PD2DSCH subframes transmitted within 40ms, three PD2DSCH subframes only contain PD2DSCH and do not contain D2DSS, so there are also remaining symbols unused.

And thirdly, the PD2DSCH sub-frame is not contained in the D2DSS sub-frame.

In a fourth case: referring to fig. 4, taking the transmission period of the D2DSS subframe as 40ms and the transmission period of the PD2DSCH subframe as 10ms as an example, the PD2DSCH subframes are not located in the D2DSS subframe, each D2DSS subframe does not include PD2DSCH, and each PD2DSCH subframe does not include a D2DSS subframe, so that there are remaining symbols in each subframe that are not used.

While some application scenarios of the embodiments of the present invention have been described above by way of example, it is understood that the transmission period of the D2DSS and the transmission period of the PD2DSCH in the above examples are only specific examples, and do not limit the present invention, for example, the transmission period of the D2DSS may also be 80ms and 160ms, and the transmission period of the D2DSS may also be 20ms and 10ms, and is not limited herein.

And the D2DSS subframe or the PD2DSCH subframe may be a normal cyclic prefix CP subframe or an extended cyclic prefix CP subframe. The extended cyclic prefix CP is different from the normal cyclic prefix CP only in a subframe of 1ms, the number of symbols is different, the length of the CP is different, and the position of the reference signal is different. The positions of the symbols occupied by the D2DSS or the PD2DSCH in each subframe may also be specified according to actual situations or protocols, and there are many situations, which are not limited herein, and the following examples are given as follows:

fig. 5 shows an example of positions of symbols occupied by D2DSS and PD2DSCH in a subframe of an extended cyclic prefix CP, where PD2DSS occupies symbol 1 of the 1 st and 2 nd slots, SD2DSS occupies symbol 2 of the 1 st and 2 nd slots, and PD2DSCH occupies symbol 0, symbol 3 and symbol 4 of the 2 nd slot.

Fig. 6 shows an example of positions of symbols occupied by D2DSS and PD2DSCH in a subframe of a normal cyclic prefix CP, where PD2DSS occupies symbol 2 of the 1 st and 2 nd slots, SD2DSS occupies symbol 3 of the 1 st and 2 nd slots, and PD2DSCH occupies symbol 1, symbol 4 and symbol 5 of the 2 nd slot.

Another example of the positions of symbols occupied by D2DSS and PD2DSCH in the subframe of the extended cyclic prefix CP is shown in fig. 7, where PD2DSS occupies symbol 1 in the 1 st and 2 nd slots, SD2DSS occupies symbol 3 in the 1 st and 2 nd slots, and PD2DSCH occupies symbol 0, symbol 2 and symbol 4 in the 2 nd slot.

Another example of the positions of symbols occupied by D2DSS and PD2DSCH in a normal cyclic prefix CP subframe is shown in fig. 8, where PD2DSS occupies symbol 2 in the 1 st and 2 nd slots, SD2DSS occupies symbol 4 in the 1 st and 2 nd slots, and PD2DSCH occupies symbol 1, symbol 3 and symbol 5 in the 2 nd slot.

It can be understood that since the D2DSS itself is a known sequence generated by the reference signal, it does not need to demodulate the reference signal, and what is transmitted in the PD2DSCH is information that needs to be determined for the receiver, when the PD2DSCH subframe is located in the D2DSS subframe, the PD2DSCH may use the D2DSS in the subframe as a demodulation reference signal, but when in a separately existing PD2DSCH subframe, i.e. a subframe that does not include the D2DSS, a separate demodulation reference signal needs to be loaded to demodulate the PD2DSCH, i.e. in a PD2DSCH subframe that does not include the D2DSS, the demodulation reference signal dedicated to demodulate the PD2DSCH also occupies a part of the symbols. In the PD2DSCH subframe including D2DSS, the PD2DSCH may use the synchronization signal as a demodulation reference signal, or may use a special demodulation reference signal, which is not limited herein.

As shown in fig. 9, an example of symbol positions occupied by PD2DSCH and DMRS in a PD2DSCH subframe that does not include the normal cyclic prefix CP of D2DSS, where PD2DSCH occupies

symbols

4 and 5 of the 2 nd slot and DMRS occupies symbol 3 of the 2 nd slot. In this case, the bandwidth occupied by the DMRS on the symbol is at least not less than the bandwidth occupied by the PD2DSCH channel.

As shown in fig. 10, an example of symbol positions occupied by PD2DSCH and DMRS in a PD2DSCH subframe excluding an extended cyclic prefix CP of D2DSS is shown, where PD2DSCH occupies

symbols

3 and 4 of the 2 nd slot and DMRS occupies symbol 2 of the 2 nd slot.

It should be understood that the above are only some examples of the PD2DSCH or D2DSS occupying symbol positions in the PD2DSCH subframe or D2DSS subframe, and there may be more ways to occupy symbol positions according to actual requirements or protocol specifications, and the present disclosure is not limited thereto.

For example, there may be more various ways only for the positions of the master synchronization signal and the slave synchronization signal in the synchronization signal, and the positions of the symbols occupied by the master synchronization signal and the slave synchronization signal may be interchanged, and the intervals of the master synchronization signal and the slave synchronization signal in the two preceding time slots are the same:

or, when the synchronization signal subframe is a synchronization signal subframe of a normal Cyclic Prefix (CP), the primary synchronization signal and the secondary synchronization signal occupy symbol 0 and symbol 1 in the previous slot and occupy symbol 4 and symbol 5 in the next slot of the synchronization signal subframe;

and the synchronization control channel may occupy 3 or 4 symbols different from the position of the synchronization signal in the synchronization signal subframe.

In addition to the above examples, there may be more occupation patterns of symbols in the synchronization signal subframe and/or the synchronization control channel subframe, which is not limited herein.

The following describes a signal transmission method in an embodiment of the present invention.

It can be seen from the above situation that the symbols in the PD2DSCH subframe or the D2DSS subframe are occupied that many symbols in the PD2DSCH subframe or the D2DSS subframe are not used, which wastes the time-frequency resources of the subframe, and thus, the time-frequency resources can be used.

Referring to fig. 11, an embodiment of a signal sending method according to the embodiment of the present invention includes:

1101. the method comprises the steps that a transmitting terminal device determines unoccupied resources in a synchronous signal subframe and/or a synchronous control channel subframe of D2D, wherein the synchronous signal subframe comprises a synchronous signal, and the synchronous control channel subframe comprises a synchronous control channel;

the transmitting end device determines unoccupied resources in a synchronization signal sub-frame (D2DSS sub-frame) and/or a synchronization control channel sub-frame (PD2DSCH sub-frame) of D2D.

It is to be understood that the transmitting end device is a transmitter of data, but not necessarily a transmitter of a synchronization source (i.e., D2DSS or PD2DSCH), if the transmitting end device is a synchronization source transmitter, the D2DSS or PD2DSCH occupying symbol positions in the D2DSS subframe and/or the PD2DSCH subframe may be transmitted by the transmitting end device itself, and if the transmitting end device is not a synchronization source transmitter, the D2DSS or PD2DSCH occupying symbol positions in the D2DSS subframe and/or the PD2DSCH subframe may be transmitted by other transmitters which are synchronization sources, which are not limited herein.

1102. The transmitting terminal equipment loads data on unoccupied resources in the synchronous signal sub-frame and/or the synchronous control channel sub-frame;

after determining unoccupied resources in the synchronization signal sub-frame and/or the synchronization control channel sub-frame, the transmitting terminal device loads data on the unoccupied resources in the synchronization signal sub-frame and/or the synchronization control channel sub-frame.

It is to be understood that the unoccupied resources in the synchronization signal sub-frame and/or the synchronization control channel sub-frame may be used for the D2D link and may also be used for the cellular link, and accordingly, the data loaded on the unoccupied resources may be data of the D2D link and may also be data of the cellular link, which is not limited herein.

1103. And the transmitting terminal equipment transmits the loaded data to receiving terminal equipment.

And after the transmitting terminal equipment loads data on unoccupied resources in the synchronous signal subframe and/or the synchronous control channel subframe, the transmitting terminal equipment transmits the data loaded in the synchronous signal subframe and/or the synchronous control channel subframe to the receiving terminal equipment.

In the embodiment of the invention, the transmitting terminal equipment firstly determines unoccupied resources in the synchronous signal subframe and/or the synchronous control channel subframe of the D2D, loads data on the unoccupied resources in the synchronous signal subframe and/or the synchronous control channel subframe, and then sends the data loaded in the synchronous signal subframe and/or the synchronous control channel subframe to the receiving terminal equipment, so that the unoccupied resources in the synchronous signal subframe of the D2D are effectively utilized, and the utilization rate of the resources by a system is improved.

The use of unoccupied resources in data transmission of the D2D link and in data transmission of the cellular link is described below, respectively:

one, data transmission for D2D link.

Fig. 12 shows an application scenario in which unoccupied resources are used in a D2D link, where a base station device may or may not exist, but at least (fig. 12 shows a schematic diagram of a transmitter), there are a transmitting end device of D2D and several receiving end devices of D2D, where the transmitting end device and the receiving end devices are both terminals of D2D, and as shown in fig. 12, D2DUE1 is the transmitting end device, and D2DUE2 and D2DUE3 are both the receiving end devices.

It can be understood that the data loaded on the unoccupied resource needs to be demodulated by using the demodulation reference signal, and it should be considered when loading the demodulation reference signal that the transmitting end device in the embodiment of the present invention is necessarily a transmitter of the data, but is not necessarily a transmitter of the synchronization source, and whether the transmitting end device is the transmitter of the synchronization source also has a certain influence on the demodulation reference signal of the loaded data, and in addition, the bandwidth of the loaded data may be larger than the bandwidth of the synchronization signal or the synchronization control channel, or may be smaller than the bandwidth of the synchronization signal or the synchronization control channel, which also has a certain influence on the demodulation reference signal of the loaded data, and the signal sending method in the embodiment of the present invention is specifically described in the following different cases:

1. the transmitting end device is a transmitter of data and also a transmitter of a synchronization source.

1.1, the bandwidth of the loaded data is within the bandwidth of the synchronization signal or the synchronization control channel:

in this case, since the transmitting end device is also a transmitter of the synchronization source, the data loaded on the unused resources may use the synchronization signal sent by the transmitting end device as the demodulation reference signal, i.e. when there is a synchronization signal in the synchronization signal subframe and/or the synchronization control channel subframe, the transmitting end device does not need to separately load the demodulation reference signal dedicated to the loaded data demodulation on the unoccupied resources, as shown in any one of fig. 5 to 8, there is a synchronization signal in the synchronization signal subframe and/or the synchronization control channel subframe, and there is no need to load the demodulation reference signal dedicated to the demodulation of the data; as shown in fig. 9 or fig. 10, in a synchronization control channel subframe that does not include a synchronization signal, a transmitting end device originally needs to load a demodulation reference signal for the synchronization control channel alone, and since the transmitting end device is also a transmitter of a synchronization source, the demodulation reference signal used for the synchronization control channel demodulation may also be used as a demodulation reference signal for loaded data, and it is also not necessary to load a demodulation reference signal dedicated for the loaded data demodulation alone on an unoccupied resource, taking fig. 13 as an example, which is an example schematic diagram of a bandwidth of loaded data within a bandwidth of the synchronization signal or the synchronization control channel.

1.2, the bandwidth of the loaded data exceeds the bandwidth of the synchronization signal or the synchronization control channel:

referring to fig. 14, another embodiment of a signal transmission method according to the embodiment of the present invention includes:

1401. the transmitting terminal equipment determines unoccupied resources in a synchronization signal subframe and/or a synchronization control channel subframe of D2D;

taking fig. 15 as an example, an exemplary diagram of the bandwidth of the loaded data exceeding the bandwidth of the synchronization signal or the synchronization control channel is shown, in this case, in the synchronization signal sub-frame and/or the synchronization control channel sub-frame, the bandwidth of the data to be loaded exceeds the bandwidth of the synchronization signal or the synchronization control channel, and therefore, when the unoccupied resources in the synchronization signal sub-frame and/or the synchronization control channel sub-frame of D2D are determined, the part outside the bandwidth of the synchronization signal or the synchronization control channel is also the unoccupied resources.

1402. And the transmitting terminal equipment loads a fifth reference signal in the synchronous signal subframe and/or the synchronous control channel subframe and at a position outside the bandwidth of the synchronous signal or the synchronous control channel.

And because there is no demodulation reference signal outside the bandwidth of the synchronization signal or the synchronization control channel in the synchronization signal subframe and/or the synchronization control channel subframe of D2D, in order to demodulate the data loaded later, the transmitting end device loads the fifth reference signal in the synchronization signal subframe and/or the synchronization control channel subframe, at a position outside the bandwidth of the synchronization signal or the synchronization control channel. The DMRS5 is one example of the fifth reference signal loaded as shown in fig. 15.

In practical applications, the specific method for loading the fifth reference signal may include the following steps:

1. the transmitting terminal equipment generates a demodulation reference sequence on the bandwidth of data in the synchronous signal subframe and/or the synchronous control channel subframe, deletes the part of the demodulation reference sequence on the bandwidth of the data, which is overlapped with the bandwidth of the synchronous signal or the control channel, and places the rest part of the demodulation reference sequence at a corresponding position to generate the fifth reference signal;

2. and the transmitting terminal equipment generates the fifth reference signal at a position which is not overlapped with the bandwidth of the synchronous signal or the synchronous control channel on the bandwidth of the data in the synchronous signal subframe and/or the synchronous control channel subframe.

The above two ways may be selected to generate the fifth reference signal, and it is understood that there are other ways to generate the fifth reference signal, which is not limited herein.

1403. The transmitting terminal equipment loads data on unoccupied resources in the synchronous signal sub-frame and/or the synchronous control channel sub-frame;

at this time, the unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe include subframes, symbols, or bandwidths that are not occupied by the synchronization signal and the synchronization control channel, the GAP, and the demodulation reference signal. As shown in fig. 15, the bandwidth of the loaded data exceeds the bandwidth of the synchronization signal or the synchronization control channel.

1404. And the transmitting terminal equipment transmits the loaded data to receiving terminal equipment.

In the embodiment of the invention, when the bandwidth of the loaded data exceeds the bandwidth of the synchronous signal or the synchronous control channel, the transmitting terminal equipment loads the fifth reference signal in the synchronous signal subframe and/or the synchronous control channel subframe and at the position outside the bandwidth of the synchronous signal or the synchronous control channel, so that the data can be loaded outside the bandwidth of the synchronous signal or the synchronous control channel, and the time-frequency resources in the synchronous signal subframe and/or the synchronous control channel subframe are utilized to a greater extent.

In the above embodiment, as shown in fig. 15, when the bandwidth of the data exceeds the bandwidth of the synchronization signal or the synchronization control channel, there may be two cases in the positional relationship between the bandwidth of the data and the bandwidth of the synchronization signal or the synchronization control channel, one of which is that the bandwidth of the data includes the bandwidth of the synchronization signal or the synchronization control channel in the middle, and the other of which is that one end of the bandwidth of the data is opposite to one end of the bandwidth of the synchronization signal or the synchronization control channel and the other end has a part of the bandwidth of the data outside the bandwidth of the synchronization signal or the synchronization control channel. In practical applications, preference should be given to: when the bandwidth of the data is larger than the bandwidth of the synchronous signal or the synchronous control channel, the bandwidth of the data does not span the bandwidth of the synchronous signal or the synchronous control channel; when the bandwidth of the data is smaller than the bandwidth of the synchronization signal or the synchronization control signal, the bandwidth of the data is within the bandwidth of the synchronization signal or the synchronization control channel.

2. The transmitting end device is a transmitter of data, but not necessarily a transmitter of a synchronization source.

In this case, the transmitting end device may be a transmitter of a synchronization source, or may not be a transmitter of a synchronization source, and the loaded data all use a reference signal loaded by the transmitting end data alone as a demodulation reference signal, which is divided into two ways: time division or superposition.

2.1, loading a demodulation reference signal by adopting a time division mode:

referring to fig. 16, another embodiment of a signal transmission method according to the embodiment of the present invention includes:

1601. the method comprises the steps that a transmitting terminal device determines unoccupied resources in a synchronous signal subframe and/or a synchronous control channel subframe of D2D, wherein the synchronous signal subframe comprises a synchronous signal, and the synchronous control channel subframe comprises a synchronous control channel;

1602. When the synchronous signal subframe does not comprise a synchronous control channel, the transmitting terminal equipment loads a first reference signal on a symbol which is not occupied by a synchronous signal and is at a position different from the synchronous signal in the synchronous signal subframe;

for example, as shown in fig. 17, an example of loading a first reference signal in a time division manner in a synchronization signal subframe that does not include a synchronization control channel is shown, where the transmitting end device loads a first reference signal DMRS1 on a symbol that is not occupied by a synchronization signal and is located at a different position from the synchronization signal in the synchronization signal subframe.

The first reference signal is loaded on a symbol at a position different from that of the synchronization signal, and interference with the synchronization signal can be prevented.

1603. When the synchronous control channel subframe does not comprise a synchronous signal, the transmitting terminal equipment loads a second reference signal on a symbol which is not occupied by the synchronous control channel and is at a position different from the synchronous control channel in the synchronous control channel subframe;

for example, as shown in fig. 18, an example of loading a second reference signal in a time division manner in a synchronization control channel subframe that does not include a synchronization signal is shown, and the transmitting-end device loads a second reference signal DMRS2 on a symbol that is not occupied by the synchronization signal and is located at a different position from the synchronization signal in the synchronization control channel subframe.

It is to be understood that, in this case, when the transmitting end device is a synchronization source transmitter, the loaded second reference signal may be simultaneously used as a demodulation reference signal of the synchronization control channel, and when the transmitting end device is not a synchronization source transmitter, a part of symbols of the synchronization control channel subframe is also occupied by the demodulation reference signal dedicated to demodulate the synchronization control channel.

1604. When the synchronization signal subframe or the synchronization control channel subframe includes both the synchronization signal and the synchronization control channel, the transmitting end device loads a third reference signal on a symbol which is not occupied by the synchronization signal and the synchronization control channel and is at a position different from the positions of the synchronization signal and the synchronization control channel in the synchronization signal subframe or the synchronization control channel subframe.

For example, as shown in fig. 19, to illustrate an example of loading a third reference signal in a time division manner in a synchronization signal subframe or a synchronization control channel subframe that includes both a synchronization signal and a synchronization control channel, the transmitting end device loads a third reference signal DMRS3 on a symbol that is not occupied by the synchronization signal and the synchronization control channel and is located at a different position from the synchronization signal and the synchronization control channel in the synchronization signal subframe.

It is to be understood that, steps 1602 to 1604 may select at least one of the steps according to different situations of the subframe sent by the transmitting end device, and not necessarily all the steps are executed, which is not limited herein.

It should be noted that, when the bandwidth of the data is greater than the bandwidth of the synchronization signal or the synchronization control channel, the loaded first reference signal, second reference signal, or third reference signal is the same as the bandwidth of the data.

Wherein the first reference signal, the second reference signal or the third reference signal are respectively generated by uniquely determined sequences, and the corresponding sequence generation method comprises:

1605. The transmitting terminal equipment loads data on unoccupied resources in the synchronous signal sub-frame and/or the synchronous control channel sub-frame;

At this time, the unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe include the unoccupied subframes, symbols or bandwidths occupied by the synchronization signal, the synchronization control channel, the GAP, the first reference signal, the second reference signal and the third reference signal.

1606. And the transmitting terminal equipment transmits the loaded data to receiving terminal equipment.

The embodiment of the invention adopts a time division method to load the first reference signal, the second reference signal or the third reference signal in the synchronous signal subframe and/or the synchronous control channel subframe, thereby ensuring that the loaded data can be successfully demodulated.

2.1, loading a demodulation reference signal in a superposition mode:

referring to fig. 20, another embodiment of a signal transmission method according to the embodiment of the present invention includes:

2001. the method comprises the steps that a transmitting terminal device determines unoccupied resources in a synchronous signal subframe and/or a synchronous control channel subframe of D2D, wherein the synchronous signal subframe comprises a synchronous signal, and the synchronous control channel subframe comprises a synchronous control channel;

2002. and the transmitting terminal equipment superposes and loads a fourth reference signal on the symbol occupied by the synchronous signal in the synchronous signal subframe and/or the synchronous control channel subframe.

For example, as shown in fig. 21, an example of loading a fourth reference signal in a symbol occupied by a synchronization signal for a transmitting end device in a superposed manner is shown, where in a synchronization signal subframe and/or a synchronization control channel subframe containing the synchronization signal, the transmitting end device loads a fourth reference signal DMRS4 in a superposed manner on the symbol occupied by the synchronization signal.

It can be understood that, in a synchronization control channel subframe that does not include a synchronization signal, if the transmitting end device is a synchronization source transmitter, the transmitting end device may load a fourth reference signal on a symbol that is not occupied by the synchronization control channel and is in a position different from that of the synchronization control channel, and if the transmitting end device is not a synchronization source transmitter, the transmitting end device may load the fourth reference signal on a symbol that is occupied by a demodulation reference signal of the synchronization control channel and is in the synchronization control channel subframe.

It should be noted that, when the bandwidth of the data is greater than the bandwidth of the synchronization signal or the synchronization control channel, the bandwidth of the loaded fourth reference signal is the same as the bandwidth of the data.

In practical applications, a part of signals in the synchronization signal subframe, such as SD2DSS, will be power-backed when transmitted, so that the power at the back-off can be used for the transmission of the demodulation reference signal. That is, the demodulation reference signal may be transmitted superimposed on the symbol on which the synchronization signal is located. That is, the demodulation reference signal and the synchronization signal are transmitted by using different powers superposed on the same symbol in the synchronization signal subframe. Wherein the demodulation reference signal is used to realize demodulation of the D2D data, and the synchronization signal is used for synchronization of the D2D receiver.

2003. The transmitting terminal equipment loads data on unoccupied resources in the synchronous signal sub-frame and/or the synchronous control channel sub-frame;

At this time, the unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe include the unoccupied subframes, symbols or bandwidths occupied by the synchronization signal, the synchronization control channel, the GAP, and the fourth reference signal.

2004. And the transmitting terminal equipment transmits the loaded data to receiving terminal equipment.

In the embodiment of the invention, the fourth reference signal is superposed on the synchronous signal to be used as the demodulation reference signal of the data, so that the positions of symbols in the synchronous signal subframe and/or the synchronous control channel subframe are saved, the time domain resource capable of loading the data is increased, and the utilization rate of the resource is improved.

In practical applications, in addition to using the above loading manners for the demodulation reference signals and the data in each case, before loading the data, the sending-end device may further determine whether each synchronization source quality inspection is a quasi co-sited reference (QCL) or not, and then select different manners according to the determination result to load the demodulation reference signals and the data. QCL refers to: signals from multiple independent transmitters, which experience less difference in channel-corresponding parameters (e.g., maximum delay spread, maximum frequency spread, or maximum doppler shift value, etc. corresponding to the channel) from the perspective of the receiver, can be approximately considered as signals from the same site. The transmitter determines that the D2DSS of all the sync sources in the group are received before transmitting data, their channels are estimated and analyzed, and if the channels of all the sync sources are approximately the same, the QCL condition can be considered satisfied. QCL can be detected by the transmitter and signaled by the network. The network may determine whether each synchronization source in the current group is QCL by acquiring channel information of the UE on the cellular link or by reporting channel information of each synchronization source detected by the UE.

Referring to fig. 22, another embodiment of a signal transmission method according to the embodiment of the present invention includes:

2201. the method comprises the steps that a transmitting terminal device determines unoccupied resources in a synchronous signal subframe and/or a synchronous control channel subframe of D2D, wherein the synchronous signal subframe comprises a synchronous signal, and the synchronous control channel subframe comprises a synchronous control channel;

2202. the transmitting terminal equipment judges whether all synchronous sources in the discovery group are quasi co-sited QCLs;

2203. and when the QCL is determined to be established among the synchronous sources in the discovery group, not loading a demodulation reference signal on the synchronous signal subframe or the synchronous control channel subframe, or loading a fifth reference signal at a position outside the bandwidth of the synchronous signal or the synchronous control channel.

It is to be understood that when determining that QCL is found between the synchronization sources in the group, it can also be determined according to various situations in what manner to perform the subsequent operation of loading the demodulation reference signal.

For example, the bandwidth of the synchronization signal or the synchronization control channel in the synchronization signal subframe or the synchronization control channel subframe may be compared with the bandwidth of the data to be loaded, when the bandwidth of the data with loading is within the bandwidth of the synchronization signal or the synchronization control channel, the demodulation reference signal dedicated to demodulating the loaded data may not be loaded on the synchronization signal subframe or the synchronization control channel subframe any more, because there is the synchronization signal in the synchronization signal subframe or the synchronization control channel subframe, the synchronization signal may be used as the demodulation reference signal of the loaded data, and when there is no synchronization signal, there is no demodulation reference signal used to demodulate the synchronization control channel, and the demodulation reference signal of the demodulation synchronization control channel may be used as the demodulation reference signal of the loaded data. When the bandwidth of the data to be loaded exceeds the bandwidth of the synchronization signal or the synchronization control channel, the data loaded outside the bandwidth of the synchronization signal or the synchronization control channel cannot use the demodulation reference signal of the synchronization signal or the synchronization control channel as the demodulation reference signal, and at this time, the demodulation reference signal dedicated to demodulating the loaded data needs to be loaded outside the bandwidth of the synchronization signal or the synchronization control channel.

2204. When determining that the QCL is not set between the synchronization sources in the transmission group, a fourth reference signal is superimposed and loaded on a symbol occupied by the synchronization signal in the synchronization signal subframe and/or the synchronization control channel subframe, or, loading a first reference signal on a symbol which is not occupied by a synchronization signal and is located at a position different from the synchronization signal in a synchronization signal subframe excluding a synchronization control channel, loading a second reference signal on a symbol which is not occupied by a synchronous control channel and is located at a position different from the synchronous control channel in a synchronous control channel subframe which does not include the synchronous signal, in a synchronization signal subframe or a synchronization control channel subframe including both a synchronization signal and a synchronization control channel, and loading a third reference signal on a symbol which is not occupied by the synchronous signal and the synchronous control channel and is in a position different from the synchronous signal and the synchronous control channel.

It is to be understood that when determining that QCL is not found between the synchronization sources in the group, it can also be determined according to various situations in what manner to perform the subsequent operation of loading the demodulation reference signal.

For example, if more data needs to be loaded, more time domain resources are used to load the data, and the demodulation reference signal is loaded in the synchronization signal subframe or the synchronization control channel subframe in a manner of selecting superposition, so that part of symbol resources can be saved to load the data: a fourth reference signal is superposed and loaded on a symbol occupied by a synchronous signal in the synchronous signal subframe and/or the synchronous control channel subframe; if it is hoped to ensure that the demodulation reference signals do not interfere with each other and the demodulation accuracy is guaranteed, the demodulation reference signals can be loaded on unoccupied symbols in a time division mode: the method comprises the steps of loading a first reference signal on a symbol which is not occupied by a synchronous signal and is at a position different from the synchronous signal in a synchronous signal subframe which does not include the synchronous control channel, loading a second reference signal on a symbol which is not occupied by the synchronous control channel and is at a position different from the synchronous control channel in a synchronous control channel subframe which does not include the synchronous signal, and loading a third reference signal on a symbol which is not occupied by the synchronous signal and the synchronous control channel and is at a position different from the synchronous signal and the synchronous control channel in the synchronous signal subframe or the synchronous control channel subframe which includes the synchronous signal and the synchronous control channel.

The specific loading manner of each reference signal is similar to that in the above embodiments, and is not described herein again.

2205. The transmitting terminal equipment loads data on unoccupied resources in the synchronous signal sub-frame and/or the synchronous control channel sub-frame;

At this time, the unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe include the unoccupied subframes, symbols or bandwidths occupied by the synchronization signal, the synchronization control channel, the GAP, and the first to fifth reference signals.

2206. And the transmitting terminal equipment transmits the loaded data to receiving terminal equipment.

In the embodiment of the invention, before the transmitting terminal equipment loads the data and the demodulation reference signal, whether the QCL is adopted is judged, and the demodulation reference signal is loaded according to the judgment result in different modes, so that the demodulation reference signal is loaded more flexibly.

In practical applications, before determining whether the QCL is determined, it may also be determined whether the transmitting end device is a synchronization source transmitter, and then perform subsequent operations according to a determination result, referring to fig. 23, where another embodiment of the signal transmitting method in the embodiment of the present invention includes:

2301. the method comprises the steps that a transmitting terminal device determines unoccupied resources in a synchronous signal subframe and/or a synchronous control channel subframe of D2D, wherein the synchronous signal subframe comprises a synchronous signal, and the synchronous control channel subframe comprises a synchronous control channel;

2302. the transmitting terminal equipment determines whether the transmitting terminal equipment is a synchronous source transmitter;

triggering 2303 when it is determined that the transmitting end device is a sync source transmitter;

when it is determined that the transmitting end device is not a sync source transmitter, step 2304 is triggered.

The synchronized source transmitter, i.e., the transmitter of the synchronization signal and/or the synchronization control channel.

2303. Loading no demodulation reference signal on the synchronous signal subframe or synchronous control channel subframe, or loading a fifth reference signal on a position outside the bandwidth of the synchronous signal or synchronous control channel, or loading a fourth reference signal on a symbol occupied by the synchronous signal in the synchronous signal subframe and/or synchronous control channel subframe, or loading a first reference signal on a symbol which is not occupied by the synchronous signal and is at a position different from the synchronous signal in the synchronous signal subframe not including the synchronous control channel, loading a second reference signal on a symbol which is not occupied by the synchronous control channel and is at a position different from the synchronous control channel in the synchronous control channel subframe not including the synchronous signal and the synchronous control channel, and loading a demodulation reference signal on a position which is not occupied by the synchronous signal and the synchronous control channel and is different from the synchronous signal and the synchronous control channel in the synchronous signal subframe or synchronous control channel subframe including both the synchronous signal and the synchronous control channel Loading a third reference signal on the symbol;

when the transmitting end device is a synchronization source transmitter, it may also determine, according to various situations, what manner to perform the subsequent operation of loading the demodulation reference signal, for example, if more data needs to be loaded, more time domain resources are used to load the data, and a superposition manner may be selected to load the demodulation reference signal in a synchronization signal subframe or a synchronization control channel subframe, so that part of symbol resources may be saved to load the data: a fourth reference signal is superposed and loaded on a symbol occupied by a synchronous signal in the synchronous signal subframe and/or the synchronous control channel subframe; if it is hoped to ensure that the demodulation reference signals do not interfere with each other and the demodulation accuracy is guaranteed, the demodulation reference signals can be loaded on unoccupied symbols in a time division mode: loading a first reference signal on a symbol which is not occupied by a synchronous signal and is at a position different from the synchronous signal in a synchronous signal subframe which does not include the synchronous control channel, loading a second reference signal on a symbol which is not occupied by the synchronous control channel and is at a position different from the synchronous control channel in a synchronous control channel subframe which does not include the synchronous signal, loading a third reference signal on a symbol which is not occupied by the synchronous signal and the synchronous control channel and is at a position different from the synchronous signal and the synchronous control channel in a synchronous signal subframe or a synchronous control channel subframe which includes both the synchronous signal and the synchronous control channel, comparing a bandwidth of the synchronous signal or the synchronous control channel in the synchronous signal subframe or the synchronous control channel subframe with a bandwidth of data to be loaded, when the bandwidth of the data with loading is within the bandwidth of the synchronous signal or the synchronous control channel, the synchronization signal subframe or the synchronization control channel subframe may not be loaded with a demodulation reference signal dedicated to demodulating the loaded data, because when there is a synchronization signal in the synchronization signal subframe or the synchronization control channel subframe, the synchronization signal may be used as a demodulation reference signal for the loaded data, and when there is no synchronization signal, there is a demodulation reference signal for demodulating the synchronization control channel, and the demodulation reference signal for demodulating the synchronization control channel may be used as a demodulation reference signal for the loaded data. When the bandwidth of the data to be loaded exceeds the bandwidth of the synchronization signal or the synchronization control channel, the data loaded outside the bandwidth of the synchronization signal or the synchronization control channel cannot use the demodulation reference signal of the synchronization signal or the synchronization control channel as the demodulation reference signal, and at this time, the demodulation reference signal dedicated to demodulating the loaded data needs to be loaded outside the bandwidth of the synchronization signal or the synchronization control channel.

2304. The transmitting terminal equipment judges whether all synchronous sources in the discovery group are quasi co-sited QCLs;

when determining that the transmitting end device is not a synchronization source transmitter, the transmitting end device determines whether each synchronization source in a discovery group is a quasi co-sited QCL, where the QCL is used to indicate that signals sent by multiple transmitting end devices in the discovery group may be approximate to signals from the same site, and the synchronization source includes the transmitting end device and a receiving end device in the discovery group;

QCL refers to: signals from multiple independent transmitters, which experience less difference in channel-corresponding parameters (e.g., maximum delay spread, maximum frequency spread, or maximum doppler shift value, etc. corresponding to the channel) from the perspective of the receiver, can be approximately considered as signals from the same site. The transmitter determines that the D2DSS of all the sync sources in the group are received before transmitting data, their channels are estimated and analyzed, and if the channels of all the sync sources are approximately the same, the QCL condition can be considered satisfied. QCL can be detected by the transmitter and signaled by the network. The network may determine whether each synchronization source in the current group is QCL by acquiring channel information of the UE on the cellular link or by reporting channel information of each synchronization source detected by the UE.

2305. And when the QCL is determined to be established among the synchronous sources in the discovery group, not loading a demodulation reference signal on the synchronous signal subframe or the synchronous control channel subframe, or loading a fifth reference signal at a position outside the bandwidth of the synchronous signal or the synchronous control channel.

2306. When determining that the QCL is not set between the synchronization sources in the transmission group, a fourth reference signal is superimposed and loaded on a symbol occupied by the synchronization signal in the synchronization signal subframe and/or the synchronization control channel subframe, or, loading a first reference signal on a symbol which is not occupied by a synchronization signal and is located at a position different from the synchronization signal in a synchronization signal subframe excluding a synchronization control channel, loading a second reference signal on a symbol which is not occupied by a synchronous control channel and is located at a position different from the synchronous control channel in a synchronous control channel subframe which does not include the synchronous signal, in a synchronization signal subframe or a synchronization control channel subframe including both a synchronization signal and a synchronization control channel, and loading a third reference signal on a symbol which is not occupied by the synchronous signal and the synchronous control channel and is in a position different from the synchronous signal and the synchronous control channel.

2307. The transmitting terminal equipment loads data on unoccupied resources in the synchronous signal sub-frame and/or the synchronous control channel sub-frame;

2308. And the transmitting terminal equipment transmits the loaded data to receiving terminal equipment.

In the embodiment of the invention, before the transmitting terminal equipment loads the data and the demodulation reference signal, whether the transmitting terminal equipment is a synchronous source transmitter is judged, and the demodulation reference signal is loaded according to different modes according to the judgment result, so that the loading of the demodulation reference signal is more flexible.

In the above embodiments, the method for loading data on unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe by the transmitting end device further includes, in practical application, before the step of loading data on unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe by the transmitting end device: and the transmitting terminal equipment performs rate matching on unoccupied resources in the synchronous signal subframe and/or the synchronous control channel.

And secondly, data transmission for the cellular link.

Fig. 24 shows an application scenario of unoccupied resource usage in a cellular link, wherein the unoccupied resource in the synchronization signal subframe and/or the synchronization control channel subframe is used between a base station and a cellular terminal to transmit cellular data, the occupied resource in the synchronization signal subframe and/or the synchronization control channel subframe is used between the cellular terminal and the cellular terminal to transmit a synchronization signal and/or a synchronization control channel in a D2D link, for example, as shown in fig. 24, the unoccupied resource is used between a cellular terminal UE4 and a base station device to transmit cellular link data, and the occupied resource is used between a cellular terminal UE1 and

UEs

2 and 3 to transmit a synchronization signal and/or a synchronization control channel in a D2D link.

In such an application scenario, the application scenario can be divided into an uplink scenario and a downlink scenario of data.

1. In a downstream scenario of data:

the base station loads data on unoccupied resources and then sends the data to the cellular terminal, wherein the base station is the sending terminal equipment in the embodiment of the invention, and the cellular terminal is the receiving terminal equipment in the embodiment of the invention.

In this scenario, the specific step of the base station loading data and demodulating the reference signal on the unoccupied resource in the synchronization signal subframe or the synchronization control channel subframe may be to use the base station as the transmitting end device, refer to the specific step of the transmitting end device loading data and demodulating the reference signal in the foregoing embodiments, and are similar to those in the scenario of the D2D link, and are not described herein again.

2. In an upstream scenario of data:

the cellular terminal loads data on unoccupied resources and then sends the data to the base station, wherein the cellular terminal is the sending terminal equipment in the embodiment of the invention, and the base station is the receiving terminal equipment in the embodiment of the invention.

The difference between the description of the data and the demodulation reference signal in the scenario of the D2D link is that the cellular terminal does not know whether the subframe to be sent by itself is a synchronization signal subframe or a synchronization control channel subframe, and the base station knows that it needs to receive an indication message sent by the base station first to determine whether the currently transmitted subframe is a synchronization signal subframe or a synchronization control channel subframe, and when receiving the first indication message sent by the base station to indicate that the currently transmitted subframe of the cellular terminal is a synchronization signal subframe and/or a synchronization control channel subframe, then performs the following steps of determining unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe of D2D, and the following steps are similar to the specific processes in the D2D link, and are described below by taking several embodiments as examples:

referring to fig. 25, another embodiment of a signal transmission method according to the embodiment of the present invention includes:

2501. the method comprises the steps that a transmitting terminal device receives first indication information sent by a receiving terminal device, wherein the first indication information is used for indicating whether a subframe currently transmitted by the transmitting terminal device is a synchronous signal subframe and/or a synchronous control channel subframe;

in this embodiment, the transmitting end device is a cellular terminal, and the receiving end device is a base station. The first indication information may be information indicated by explicit signaling or information piggybacked to a specific reference signal. The first indication information includes at least two states at the time of transmission, namely: the indication is a synchronization signal subframe and/or a synchronization control channel subframe; indicating not a synchronization signal subframe and/or a synchronization control channel subframe.

2502. When the first indication information indicates that the currently transmitted subframe is a synchronization signal subframe and/or a synchronization control channel subframe, the transmitting terminal device determines unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe of D2D, wherein the synchronization signal subframe comprises a synchronization signal, and the synchronization control channel subframe comprises a synchronization control channel;

2503. the transmitting terminal equipment loads data on unoccupied resources in the synchronous signal sub-frame and/or the synchronous control channel sub-frame;

2504. And the transmitting terminal equipment transmits the loaded data to receiving terminal equipment.

It is to be understood that the transmitting device may send only the symbols loaded with data and the symbols of the demodulation signal for demodulating the data to the receiving device, and may also send the complete synchronization signal subframe and/or synchronization control channel subframe to the receiving device, which is not limited herein.

In the embodiment of the present invention, when the sending end device is a cellular terminal, first indication information sent by a base station needs to be received first, and when the first indication information determines that a currently transmitted subframe is a synchronization signal subframe and/or a synchronization control channel subframe, the step of determining unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe in the embodiment of the present invention is executed, so that the unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe can be used for transmitting data of a cellular link, thereby widening the use range of the unoccupied resources.

Taking the embodiment shown in fig. 16 in the data of the D2D link as an example, before loading the reference signal, the first indication information needs to be received, and the specific process may be changed as follows:

1. the method comprises the steps that a transmitting terminal device receives first indication information sent by a receiving terminal device, wherein the first indication information is used for indicating whether a subframe currently transmitted by the transmitting terminal device is a synchronous signal subframe and/or a synchronous control channel subframe;

2. When the first indication information indicates that the currently transmitted subframe is a synchronization signal subframe and/or a synchronization control channel subframe, the transmitting terminal device determines unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe of D2D, wherein the synchronization signal subframe comprises a synchronization signal, and the synchronization control channel subframe comprises a synchronization control channel;

3. when the synchronous signal subframe does not comprise a synchronous control channel, the transmitting terminal equipment loads a first reference signal on a symbol which is not occupied by a synchronous signal and is at a position different from the synchronous signal in the synchronous signal subframe;

4. When the synchronous control channel subframe does not comprise a synchronous signal, the transmitting terminal equipment loads a second reference signal on a symbol which is not occupied by the synchronous control channel and is at a position different from the synchronous control channel in the synchronous control channel subframe;

5. When the synchronization signal subframe or the synchronization control channel subframe includes both the synchronization signal and the synchronization control channel, the transmitting end device loads a third reference signal on a symbol which is not occupied by the synchronization signal and the synchronization control channel and is at a position different from the positions of the synchronization signal and the synchronization control channel in the synchronization signal subframe or the synchronization control channel subframe.

It can be understood that, steps 3 to 5 may select at least one of the steps according to different situations of the subframe sent by the transmitting end device, and not necessarily all the steps are executed, which is not limited herein.

6. The transmitting terminal equipment loads data on unoccupied resources in the synchronous signal sub-frame and/or the synchronous control channel sub-frame;

7. And the transmitting terminal equipment transmits the loaded data to receiving terminal equipment.

As shown above, in the presence of step 2501, when the first indication information indicates that the currently transmitted subframe is a synchronization signal subframe and/or a synchronization control channel subframe, the subsequent step of loading the demodulation reference signal or data on the unoccupied resource is similar to the specific process in each embodiment in the D2D link, and the specific loading manner of each embodiment in the D2D link may be applied in the subsequent step, which is not described herein again.

It can be understood that, when the transmitting end device is a transmitter of data and is also a transmitter of a synchronization source, in a synchronization control channel subframe that does not include a synchronization signal, the loaded demodulation reference signal can be used for demodulation of the loaded data and also for demodulation of the synchronization control channel; the demodulation reference signal used for loaded data demodulation and the demodulation reference signal used for synchronous control channel demodulation can be one or can share several signals, so that the demodulation efficiency can be improved; in addition, in this case, when the bandwidth of the data exceeds the bandwidth of the synchronous control channel, the transmitting-end device may directly generate the demodulation reference signal on the bandwidth of the data, such that the synchronization control channel and the data within the synchronization control channel bandwidth can be demodulated using the portion of the generated demodulation reference signal within the synchronization control channel bandwidth, and data loaded outside the synchronous control channel bandwidth can be demodulated using a demodulation reference signal loaded outside the synchronous control channel bandwidth, and therefore, in the synchronous control channel subframe not including the synchronous signal, the demodulation reference signal loaded outside the synchronous control channel bandwidth may be loaded on the same symbol as the demodulation reference signal within the synchronous control channel bandwidth, it may be generated separately or simultaneously at one time, and a plurality of them may be generated simultaneously as demodulation reference signals for data and synchronization control channels.

It should be noted that, in each of the above embodiments, in the process of sending the data in the synchronization signal subframe and/or the synchronization control channel subframe that is ready to be sent, rate matching needs to be performed on the synchronization signal subframe and/or the synchronization control channel subframe. And for the transmitter, after confirming that the sending subframe is a subframe occupied by the D2DSS and/or the PD2DSCH, performing rate matching on the transmitter on corresponding time-frequency resources. That is, the data to be transmitted cannot be mapped onto the resources already used, but the original information bits to be transmitted are generated into coded bits according to the available resources during the process of generating coded bits by the encoder, and then mapped onto the available resources.

The following describes a signal receiving method in an embodiment of the present invention.

Referring to fig. 26, an embodiment of a signal receiving method according to the embodiment of the present invention includes:

2601. receiving end equipment receives data loaded in a synchronous signal subframe and/or a synchronous control channel subframe, wherein the data is sent by transmitting end equipment, the synchronous signal subframe is a synchronous signal subframe of D2D, and the synchronous control channel subframe is a synchronous control channel subframe of D2D;

2602. and the receiving terminal equipment analyzes the data in the synchronous signal subframe and/or the synchronous control channel subframe.

In the embodiment of the invention, the receiving end equipment receives the data loaded in the synchronous signal subframe and/or the synchronous control channel subframe and sent by the transmitting end equipment, analyzes the data in the synchronous signal subframe and/or the synchronous control channel subframe, utilizes the resource transmission data of the synchronous favorite subframe and/or the synchronous control channel subframe, and improves the utilization rate of resources.

According to different loading conditions of the transmitting terminal equipment on the data, the receiving terminal equipment also has different analysis modes on the data:

first, the data received by the receiving end device is data of the D2D link.

referring to fig. 27, another embodiment of a signal receiving method according to the embodiment of the present invention includes:

2701. receiving end equipment receives data loaded in a synchronous signal subframe and/or a synchronous control channel subframe, wherein the data is sent by transmitting end equipment, the synchronous signal subframe is a synchronous signal subframe of D2D, and the synchronous control channel subframe is a synchronous control channel subframe of D2D;

in this embodiment, the bandwidth of the data is within the bandwidth of the synchronization signal or the synchronization control channel.

2702. And the receiving terminal equipment takes the synchronous signal as a demodulation reference signal of the data and analyzes the data in the synchronous signal subframe and/or the synchronous control channel subframe.

In this embodiment, the transmitting end device is a transmitter of data and is also a transmitter of a synchronization source, a bandwidth of loaded data is within a bandwidth of a synchronization signal or a synchronization control channel, and when a synchronization signal subframe or a synchronization control signal subframe contains a synchronization signal, the receiving end device may use the synchronization signal as a demodulation reference signal of the data; when the synchronization control channel subframe does not contain the synchronization signal, the receiving end device may use a demodulation reference signal dedicated to demodulating the synchronization control signal in the synchronization control channel subframe as a demodulation reference signal of the data.

In the embodiment of the invention, the receiving end equipment uses the synchronous signal as the demodulation reference signal of the loaded data to accurately analyze the loaded data.

referring to fig. 28, another embodiment of a signal receiving method according to the embodiment of the present invention includes:

2801. receiving end equipment receives data and a fifth reference signal which are loaded in a synchronous signal subframe and/or a synchronous control channel subframe and are sent by transmitting end equipment, wherein the fifth reference signal is loaded at a position outside the bandwidth of the synchronous signal or the synchronous control channel in the synchronous signal subframe and/or the synchronous control channel subframe;

2802. in a synchronization signal subframe or a synchronization control channel subframe including a synchronization signal, the receiving end device uses the third reference signal and the synchronization signal as demodulation reference signals of the data to resolve the data in the synchronization signal subframe or the synchronization control channel subframe including the synchronization signal;

2803. in the synchronization control channel subframe not including the synchronization signal, the receiving end device uses the third reference signal as a demodulation reference signal for data outside the bandwidth of the synchronization control channel, uses a demodulation reference signal dedicated to the synchronization control channel as a demodulation reference signal for data within the bandwidth of the synchronization control channel, and parses the data in the synchronization control channel subframe not including the synchronization signal.

In the embodiment of the invention, as for the data beyond the bandwidth of the synchronous signal or the synchronous control channel, the fifth reference signal loaded outside the bandwidth of the synchronous signal or the synchronous control channel is used for analyzing, and the data loaded outside the bandwidth of the synchronous signal or the synchronous control channel is accurately obtained.

2.1, a demodulation reference signal loaded in a time division mode:

referring to fig. 29, another embodiment of a signal receiving method according to the embodiment of the present invention includes:

2901. receiving end equipment receives data loaded on a synchronous signal subframe which does not comprise a synchronous control channel and a first reference signal, wherein the first reference signal is loaded on a symbol which is not occupied by a synchronous signal and is in a position different from the synchronous signal in the synchronous signal subframe which does not comprise the synchronous control channel;

2902. the receiving end equipment receives data loaded on a synchronous control channel subframe which does not comprise a synchronous signal and a second reference signal, wherein the second reference signal is recorded on a symbol which is not occupied by the synchronous control channel and is at a position different from the synchronous control channel in the synchronous control channel subframe;

2903. the receiving end equipment receives data and a third reference signal loaded on a synchronous signal subframe or a synchronous control channel subframe comprising a synchronous signal and a synchronous control channel, wherein the third reference signal is loaded on a symbol which is not occupied by the synchronous signal and the synchronous control channel and is in a position different from the positions of the synchronous signal and the synchronous control channel in the synchronous signal subframe or the synchronous control channel subframe;

2904. in a synchronization signal subframe which does not comprise a synchronization control channel, the receiving end uses the first reference signal as a demodulation reference signal of the data to analyze the data in the synchronization signal subframe which does not comprise the synchronization control channel;

2905. in a synchronous control channel subframe which does not comprise a synchronous signal, the receiving end uses the second reference signal as a demodulation reference signal of the data to analyze the data in the synchronous control channel subframe which does not comprise the synchronous signal;

2906. on a synchronization signal subframe or a synchronization control channel subframe including a synchronization signal and a synchronization control channel, the receiving end uses the third reference signal as a demodulation reference signal of the data to resolve the data in the synchronization signal subframe or the synchronization control channel subframe including the synchronization signal and the synchronization control channel.

In the embodiment of the invention, the receiving end equipment uses the first reference signal, the second reference signal or the third reference signal which is loaded on the synchronous signal subframe or the synchronous control channel subframe in a time division mode as the demodulation reference signal of the loaded data, and the data loaded in the synchronous signal subframe or the synchronous control channel subframe is accurately analyzed.

2.1, demodulation reference signals loaded in a superposition mode:

referring to fig. 30, another embodiment of a signal receiving method according to the embodiment of the present invention includes:

3001. the receiving end equipment receives data and a fourth reference signal loaded in a synchronous signal subframe and/or a synchronous control channel subframe, and the fourth reference signal is superposed and loaded on a symbol occupied by the synchronous signal;

3002. and the receiving end uses the fourth reference signal as a demodulation reference signal of the data to analyze the data in the synchronous signal subframe and/or the synchronous control channel subframe.

In the embodiment of the invention, the receiving end equipment uses the fourth reference signal loaded on the synchronous signal subframe or the synchronous control channel subframe in a superposition mode as the demodulation reference signal of the loaded data to accurately analyze the data loaded in the synchronous signal subframe or the synchronous control channel subframe.

In practical application, the receiving end device may also receive an indication signaling sent by the transmitting end device for indicating whether QCL exists between the synchronization sources in the discovery group, and then analyze the data according to the indication result in different manners:

referring to fig. 31, another embodiment of the data receiving method according to the embodiment of the present invention includes:

3101. receiving end equipment receives an indication signaling sent by the transmitting end equipment, wherein the indication signaling is used for indicating whether each synchronization source in a discovery group is a QCL (quaternary clock rate), the QCL is used for indicating that signals sent by a plurality of transmitting end equipment in the discovery group are approximate to signals from the same site, and the synchronization source comprises the transmitting end equipment and the receiving end equipment in the discovery group;

3102. When the indication signaling indicates that QCLs are established among the synchronization sources in the discovery group, the receiving end device receives data loaded in a synchronization signal subframe and/or a synchronization control channel subframe, or the receiving end device receives data loaded in a synchronization signal subframe and/or a synchronization control channel subframe and a fifth reference signal, where the fifth reference signal is loaded at a position outside a bandwidth of a synchronization signal or a synchronization control channel in the synchronization signal subframe and/or the synchronization control channel subframe;

3103. when the indication signaling indicates that the QCL is not set between the synchronization sources in the discovery group, the receiving end device receives data and a first reference signal loaded on a synchronization signal subframe not including a synchronization control channel, the first reference signal being loaded on a symbol which is not occupied by a synchronization signal and is in a position different from the synchronization signal in the synchronization signal subframe not including the synchronization control channel, the receiving end device receives data and a second reference signal loaded on a synchronization control channel subframe not including the synchronization signal, the second reference signal being recorded on a symbol which is not occupied by the synchronization control channel and is in a position different from the synchronization control channel in the synchronization control channel subframe, the receiving end device receives data and a third reference signal loaded on a synchronization signal subframe or a synchronization control channel subframe including the synchronization signal and the synchronization control channel, the third reference signal is loaded on a symbol which is not occupied by the synchronous signal and the synchronous control channel in the synchronous signal subframe or the synchronous control channel subframe and is at a position different from the positions of the synchronous signal and the synchronous control channel, or the receiving end equipment receives data and a fourth reference signal loaded in the synchronous signal subframe and/or the synchronous control channel subframe, and the fourth reference signal is loaded on the symbol occupied by the synchronous signal in a superposed manner;

3104. when the indication signaling indicates that QCL is between the synchronization sources in the discovery group, the receiving end uses a synchronization signal as a demodulation reference signal of the data to resolve the data in the synchronization signal subframe and/or the synchronization control channel subframe, or, in a synchronization signal subframe or a synchronization control channel subframe including a synchronization signal, the receiving end device uses the third reference signal and the synchronization signal as demodulation reference signals of the data to resolve the data in the synchronization signal subframe or the synchronization control channel subframe including the synchronization signal, and in a synchronization control channel subframe not including the synchronization signal, the receiving end device uses the third reference signal as a demodulation reference signal of data outside the bandwidth of the synchronization control channel and uses a demodulation reference signal dedicated to the synchronization control channel as a demodulation reference signal of data within the bandwidth of the synchronization control channel, analyzing the data in the synchronous control channel subframe which does not comprise the synchronous signal;

3105. when the indication signaling indicates that the difference between the synchronization sources in the discovery group is not QCL, the receiving end uses the first reference signal as a demodulation reference signal of the data to resolve the data in the synchronization signal subframe not including the synchronization control channel in a synchronization signal subframe not including the synchronization control channel, the receiving end uses the second reference signal as a demodulation reference signal of the data to resolve the data in the synchronization control channel subframe not including the synchronization signal in a synchronization control channel subframe not including the synchronization signal, the receiving end uses the third reference signal as a demodulation reference signal of the data to resolve the data in the synchronization signal subframe or the synchronization control channel subframe including the synchronization signal and the synchronization control channel on the synchronization signal subframe or the synchronization control channel subframe including the synchronization signal and the synchronization control channel, or, the receiving end uses the fourth reference signal as a demodulation reference signal of the data to analyze the data in the synchronization signal subframe and/or the synchronization control channel subframe.

In the embodiment of the invention, the receiving end equipment demodulates the loaded data in different modes according to the received instruction information, and can more accurately analyze the data in the synchronous signal subframe and/or the synchronous control channel subframe.

Firstly, the data received by the receiving end device is the data of the cellular link.

1. In a downstream scenario of data:

In this scenario, unlike the scenario of D2D link, the cellular terminal does not know whether the subframe received by itself is a synchronization signal subframe or a synchronization control channel subframe, and needs to receive the second indication information transmitted by the base station first, the second indication information is used for indicating whether the currently received subframe of the cellular link terminal is a synchronization signal subframe or a synchronization control channel subframe, when the cellular link terminal determines that the currently received subframe is a synchronization signal subframe or a synchronization control signal subframe according to the second indication information, then, the step of subsequently receiving the data loaded in the synchronous signal sub-frame and/or the synchronous control channel sub-frame sent by the transmitting terminal equipment is executed, it is understood that the following steps of receiving data and parsing are similar to the specific process of receiving data of the D2D link in the above embodiments, and the following description is given by taking an embodiment as an example:

referring to fig. 32, another embodiment of a signal receiving method according to the embodiment of the present invention includes:

3201. receiving end equipment receives second indication information sent by sending end equipment, wherein the second indication information is used for indicating whether a subframe currently received by the receiving end equipment is a synchronous signal subframe and/or a synchronous control channel subframe;

in this embodiment, the receiving end device is a cellular link UE, and the sending end device is a base station.

3202. When the second indication information indicates that the currently received subframe is a synchronization signal subframe and/or a synchronization control channel subframe, the receiving end device receives data loaded in the synchronization signal subframe and/or the synchronization control channel subframe, which is sent by the transmitting end device, wherein the synchronization signal subframe is a synchronization signal subframe of D2D, and the synchronization control channel subframe is a synchronization control channel subframe of D2D;

3203. and the receiving terminal equipment analyzes the data in the synchronous signal subframe and/or the synchronous control channel subframe.

In the embodiment of the invention, when the receiving end equipment is a cellular link terminal and the sending end equipment is a base station, the receiving end equipment firstly receives the second indication information sent by the sending end equipment, and when the second indication information indicates that the currently received subframe is a synchronous signal and/or a synchronous control channel subframe, the subsequent steps are executed, so that unoccupied resources in the synchronous signal subframe and/or the synchronous control channel subframe can be used for transmitting data of the cellular link, and the use range of the unoccupied resources is widened.

It can be understood that, when the receiving end device is a cellular link terminal, the step of receiving the second indication information sent by the sending end device in step 3201 may be added to each embodiment of receiving data of the D2D link, and is not described herein again.

2. In an upstream scenario of data:

In this case, the specific step of the base station analyzing the data loaded in the synchronization signal subframe and/or the synchronization control channel subframe is similar to the specific step of the base station serving as the receiving end device and analyzing the data loaded in the synchronization signal subframe and/or the synchronization control channel subframe by using the receiving end plug red packet in each embodiment for receiving data of the D2D link, and is not described herein again in the above scenario for receiving data of the D2D link.

It should be noted that, in the foregoing embodiments, in the process of analyzing the data in the synchronization signal subframe and/or the synchronization control channel subframe, the receiving end device also needs to perform rate matching on the synchronization signal subframe and/or the synchronization control channel subframe.

Two methods are involved in indicating rate matching. The method comprises the following steps: explicit or implicit signaling is used to indicate whether a transmitter or receiver of a cellular link is to do rate matching. The location of the rate matching is determined by the resources used by the D2D link in the D2DSS subframe and the resources used by the demodulation reference signal in the cellular link. The method 2 comprises the following steps: for receivers of the cellular link, especially downlink receivers (this is the case when TDD downlink sub-frames are used for D2D), a UE-based approach may be used. One method includes the UE performing detection and decoding according to the transmission with D2DSS and the transmission without D2DSS, respectively, and assuming that the corresponding decoding result is correct. In another method, the demodulation reference signal on the 2 nd symbol of the D2DSS subframe is subjected to energy detection after despreading, because there is no demodulation reference signal on the 2 nd slot, and there is necessarily lower energy after despreading according to the demodulation reference signal on the first slot. If the assumption is true, the current D2DSS subframe is used, and the rate matching of the receiving side is needed.

In addition, according to the current constraints on the D2D system design, for a UE, the transmission and reception cannot be full duplex on one carrier. That is, for the UE of D2D, the transmitting D2D signal and the receiving D2D signal must be TDM. Similarly, for one synchronization source UE, when there is a multi-hop forwarding situation (e.g. in a partial coverage scenario), there is a synchronization source of D2D that needs to both receive PD2DSCH signals from other synchronization sources and send its own PD2DSCH signal as a next-hop synchronization source.

One way is that: different D2DSS subframes are used when different synchronization sources send PD2DSCH, specifically, the synchronization control channel may include a first synchronization control channel and a second synchronization control channel, the first synchronization control channel is loaded by a first transmitting terminal device, the second synchronization control channel is loaded by a second transmitting terminal device, and the first synchronization control channel and the second synchronization control channel may occupy different synchronization signal subframes.

It can be understood that there may be more synchronization control channels transmitted by the transmitting end device, and each synchronization control channel occupies different synchronization signal subframes.

As shown in fig. 33, which is an exemplary diagram illustrating that different synchronization signal subframes are used when different synchronization sources transmit synchronization control channels, a synchronization control channel transmitted by a first transmitting end device UE1 occupies the first two synchronization signal subframes, a synchronization control channel transmitted by a second transmitting end device UE2 occupies the 3rd and 4 th synchronization signal subframes, and a synchronization control channel transmitted by a third transmitting end device UE3 occupies the 5 th and 6 th synchronization signal subframes. Thus, the sync source UE1 does not have to receive the PD2DSCH for the 2 nd and 3rd UEs on these subframes when transmitting the PD2DSCH, but can receive on the 2 nd and 3rd UEs at the position where the PD2DSCH subframe is transmitted. Thereby solving the problem of half-duplex limitation.

That is, in the transmission period of PD2DSCH, only part of the subframes are actually used by PD2DSCH transmitted by one sync source UE, and different subframes in the whole period are used by different sync source UEs when PD2DSCH is transmitted. Also, each transmission may occupy multiple consecutive or non-consecutive subframes.

The position of the PD2DSCH transmitted by each synchronization source may be signaled to the UE by the base station or may be obtained by the UE according to certain parameters. Specifically which sync source UE uses which D2DSS subframe, the multiple D2DSS subframes within the PD2DSCH period may be divided into several parts and then associated by certain parameters. For example, the synchronization source UE may obtain from the synchronization source ID. As shown in fig. 33, all or a portion of the different sync source IDs may be used for acquisition if a maximum of 3 different PD2DSCH cycles are possible. As indicated by taking 2 bits of any of the sync source ID binary codes; or by its synchronization source identification in bits, tens or hundreds, or the entire synchronization source identification modulo 3. Here 3 refers to the maximum number that can be indicated in a PD2DSCH cycle. Another way to indicate that different sync source UEs use different subframes in the PD2DSCH period is the number of sync source steps, e.g. different number of hops, the PD2DSCH for the sync source is placed at different positions in the PD2DSCH period. That is, the number of synchronization source hops where the first transmitting end device and the second transmitting end device are currently located is different.

The other mode is as follows: the first synchronization control channel and the second synchronization control channel occupy different symbols in the same synchronization signal subframe, or different synchronization sources use different OFDM symbols in the same D2DSS subframe when transmitting PD2 DSCH.

As shown in fig. 34, which is an example diagram illustrating that different synchronization sources use different symbols in the same D2DSS subframe when transmitting PD2DSCH, the PD2DSCH of the first transmitting end device UE1 may use four symbols at

positions

0, 1, 4, and 5 of the 1 st slot; while the PD2DSCH of the second transmitting end device UE2 uses the four-

position symbols

0, 1, 4, 5 of the 2 nd time slot. Specifically which synchronization source UE uses which part of the symbol, the symbol may be divided into several parts and then associated by certain parameters. For example, the synchronization source UE may obtain from the synchronization source ID.

It is of course also possible to divide the symbols in the D2DSS sub-frame and sub-frame into a plurality of subsets simultaneously, associating the PD2DSCH from different sync source UEs to the corresponding symbols on the corresponding sub-frames.

Since the transmitter of the sync source transmits the D2DSS, while the sync source is necessarily also the transmitter of the PD2 DSCH. And different synchronization sources can be independent synchronization sources, or timing references of other synchronization sources can be received, and then the D2DSS is transmitted downwards. The hop count of the synchronization source corresponding to the independent synchronization source is the first hop, and the synchronization source which takes the first synchronization source as the reference to transmit is the second hop. Fig. 35 is a diagram illustrating an example of different D2D sync sources having different current sync source hop counts.

The current sync source hop count at which the different sync sources are located may be indicated by the D2DSS sequence or by signaling carried in the PD2 DSCH. Meanwhile, in order to facilitate the D2D receiver to distinguish the positions of the PD2DSCH transmitted from different sync sources, transmitters with different current sync source hop counts have different positions in the time domain. For example, the PD2DSCH with hop count 0 may be at position 0, the PD2DSCH with hop count 1 may have an offset position 1 with respect to position 0, and the PD2DSCH with hop count 2 may have an offset position 2 with respect to position 0. Therefore, when the receiver of the D2D UE is detecting the PD2DSCH, the current hop count of the detected D2DSS may be determined by the D2DSS, and then the position of the corresponding PD2DSCH may be determined at the corresponding offset position in time. Thereby the detection time of the PD2DSCH receiver may be further reduced.

The following describes the sending-end device in the embodiment of the present invention:

referring to fig. 36, an embodiment of the sending end device in the embodiment of the present invention includes:

a determining module 3601, configured to determine unoccupied resources in a synchronization signal subframe and/or a synchronization control channel subframe of the device-to-device D2D, where the synchronization signal subframe includes a synchronization signal, and the synchronization control channel subframe includes a synchronization control channel;

a data loading module 3602, configured to load data on unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe determined by the determining module 3601;

a sending module 3603, configured to send the data loaded by the data loading module 3602 to a receiving end device.

In the embodiment of the present invention, the determining module 3601 first determines unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe of D2D, the data loading module 3602 loads data on the unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe, and the sending module 3603 sends the data loaded in the synchronization signal subframe and/or the synchronization control channel subframe to the receiving end device, so that the unoccupied resources in the synchronization signal subframe of D2D are effectively utilized, and the utilization rate of the resources by the system is improved.

The following describes the data loading of the D2D link and the data loading of the cellular link on the unoccupied resources by the transmitting-end device, respectively:

firstly, the transmitting terminal device loads data of the D2D link on unoccupied resources.

In this scenario, the transmitting end device and the receiving end device are both D2D terminals.

Specifically, in practical application, the demodulation reference signal may be loaded on an unoccupied resource in a time division manner:

referring to fig. 37, another embodiment of the sending end device in the embodiment of the present invention includes:

a determining module 3701, configured to determine unoccupied resources in a synchronization signal subframe and/or a synchronization control channel subframe of the device-to-device D2D, where the synchronization signal subframe includes a synchronization signal, and the synchronization control channel subframe includes a synchronization control channel;

a data loading module 3702, configured to load data on unoccupied resources in the synchronization signal sub-frame and/or the synchronization control channel sub-frame determined by the determining module 3701;

a sending module 3703, configured to send the data loaded by the data loading module 3702 to a receiving end device;

in this implementation, the transmitting device further includes:

a first reference loading module 3704, configured to load a first reference signal on a symbol which is not occupied by a synchronization signal and is located at a position different from the synchronization signal in the synchronization signal subframe when the synchronization control channel is not included in the synchronization signal subframe;

a second reference loading module 3705, configured to load, when the synchronization signal is not included in the synchronization control channel subframe, a second reference signal on a symbol which is not occupied by the synchronization control channel and is located at a position different from the synchronization control channel in the synchronization control channel subframe;

a third reference loading module 3706, configured to, when the synchronization signal subframe or the synchronization control channel subframe includes both the synchronization signal and the synchronization control channel, load a third reference signal on a symbol which is not occupied by the synchronization signal and the synchronization control channel and is located at a position different from the synchronization signal and the synchronization control channel in the synchronization signal subframe or the synchronization control channel subframe.

Optionally, the transmitting end device may further include:

a sequence generating module 3707 configured to generate a uniquely determined sequence corresponding to the first, second, or third reference signal over a bandwidth of the data, or generate a first portion of the uniquely determined sequence corresponding to the first, second, or third reference signal over a bandwidth in which the synchronization signal or the synchronization control channel is located, and generate a second portion of the sequence over the remaining bandwidth.

In the embodiment of the present invention, the first reference loading module 3704, the second reference loading module 3705, and the third reference loading module 3706 load the first reference signal, the second reference signal, or the third reference signal in the synchronization signal subframe and/or the synchronization control channel subframe by using a time division method, so that it is ensured that the loaded data can be demodulated smoothly.

In practical application, the demodulation reference signal can be loaded on unoccupied resources in a superposition manner:

referring to fig. 38, another embodiment of the sending end device in the embodiment of the present invention includes:

a determining module 3801, configured to determine unoccupied resources in a synchronization signal subframe and/or a synchronization control channel subframe of the device-to-device D2D, where the synchronization signal subframe includes a synchronization signal and the synchronization control channel subframe includes a synchronization control channel;

a data loading module 3802, configured to load data on unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe determined by the determining module 3801;

a sending module 3803, configured to send the data loaded by the data loading module 3802 to a receiving end device;

in this implementation, the transmitting device further includes:

a fourth reference loading module 3804, configured to load a fourth reference signal in a superposition manner on a symbol occupied by the synchronization signal in the synchronization signal subframe and/or the synchronization control channel subframe.

In the embodiment of the present invention, the fourth reference loading module 3804 superimposes the fourth reference signal on the synchronization signal as a demodulation reference signal of the data, so as to save positions of symbols in the synchronization signal subframe and/or the synchronization control channel subframe, increase time domain resources capable of loading the data, and improve a utilization rate of the resources.

In practical application, when the bandwidth of the data exceeds the bandwidth of the synchronization signal or the synchronization control channel, the demodulation reference signal can be loaded at a position outside the bandwidth of the synchronization signal or the synchronization control channel:

referring to fig. 39, another embodiment of the sending end device in the embodiment of the present invention includes:

a determining module 3901, configured to determine unoccupied resources in a synchronization signal subframe and/or a synchronization control channel subframe of a device-to-device D2D, where the synchronization signal subframe includes a synchronization signal, and the synchronization control channel subframe includes a synchronization control channel;

a data loading module 3902, configured to load data on unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe determined by the determining module 3901;

a sending module 3903, configured to send the data loaded by the data loading module 3902 to a receiving end device;

in this implementation, the transmitting device further includes:

a fifth reference loading module 3904, configured to load a fifth reference signal at a position outside a bandwidth of the synchronization signal or the synchronization control channel in the synchronization signal subframe and/or the synchronization control channel subframe;

optionally, the fifth reference loading module 3904 may be specifically configured to generate a demodulation reference sequence over a bandwidth of data in the synchronization signal subframe and/or the synchronization control channel subframe, delete a portion of the demodulation reference sequence over the bandwidth of the data that overlaps with the bandwidth of the synchronization signal or the control channel, place a remaining portion of the demodulation reference sequence at a corresponding position to generate the fifth reference signal, or generate the fifth reference signal at a position that does not overlap with the bandwidth of the synchronization signal or the synchronization control channel in the bandwidth of the data in the synchronization signal subframe and/or the synchronization control channel subframe.

In the embodiment of the present invention, when the bandwidth of the loaded data exceeds the bandwidth of the synchronization signal or the synchronization control channel, the fifth reference loading module 3904 loads the fifth reference signal at a position outside the bandwidth of the synchronization signal or the synchronization control channel in the synchronization signal subframe and/or the synchronization control channel subframe, so that the data can be loaded outside the bandwidth of the synchronization signal or the synchronization control channel, and the time-frequency resources in the synchronization signal subframe and/or the synchronization control channel subframe are utilized to a greater extent.

In practical application, it may also be determined whether each synchronization source in the discovery group is a QCL, and then the demodulation reference signal is loaded according to the determination result, where the QCL is: signals from multiple independent transmitters, which experience less difference in channel-corresponding parameters (e.g., maximum delay spread, maximum frequency spread, or maximum doppler shift value, etc. corresponding to the channel) from the perspective of the receiver, can be approximately considered as signals from the same site. The transmitter determines that the D2DSS of all the sync sources in the group are received before transmitting data, their channels are estimated and analyzed, and if the channels of all the sync sources are approximately the same, the QCL condition can be considered satisfied. QCL can be detected by the transmitter and signaled by the network. The network may determine whether each synchronization source in the current group is QCL by acquiring channel information of the UE on the cellular link or by reporting channel information of each synchronization source detected by the UE.

Referring to fig. 40, another embodiment of the sending end device in the embodiment of the present invention includes:

a determining module 4001, configured to determine unoccupied resources in a synchronization signal subframe and/or a synchronization control channel subframe of a device-to-device D2D, where the synchronization signal subframe includes a synchronization signal and the synchronization control channel subframe includes a synchronization control channel;

a data loading module 4002, configured to load data on unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe determined by the determining module 4001;

a sending module 4003, configured to send the data loaded by the data loading module 4002 to a receiving end device;

in this implementation, the transmitting device further includes:

a quasi-station determining module 4004, configured to determine whether synchronization sources in a discovery group are quasi co-sited QCLs, where the QCLs are used to indicate that signals sent by multiple transmitting end devices in the discovery group may be similar to signals from the same site, and the synchronization sources include the transmitting end devices and receiving end devices in the discovery group;

a sixth reference loading module 4005, configured to, when it is determined that QCL exists between synchronization sources in the discovery group, not load a demodulation reference signal on the synchronization signal subframe or the synchronization control channel subframe, or load a fifth reference signal at a position outside a bandwidth of the synchronization signal or the synchronization control channel;

a seventh reference loading module 4006, configured to, when it is determined that there is no QCL between the synchronization sources in the transmission set, and a fourth reference signal is superposed and loaded on the symbol occupied by the synchronous signal in the synchronous signal subframe and/or the synchronous control channel subframe, or, loading a first reference signal on a symbol which is not occupied by a synchronization signal and is located at a position different from the synchronization signal in a synchronization signal subframe excluding a synchronization control channel, loading a second reference signal on a symbol which is not occupied by a synchronous control channel and is located at a position different from the synchronous control channel in a synchronous control channel subframe which does not include the synchronous signal, in a synchronization signal subframe or a synchronization control channel subframe including both a synchronization signal and a synchronization control channel, and loading a third reference signal on a symbol which is not occupied by the synchronous signal and the synchronous control channel and is in a position different from the synchronous signal and the synchronous control channel.

In the embodiment of the present invention, before the data loading module 4002 loads data and the demodulation reference signal, the quasi-station determining module 4004 first determines whether the data is QCL, and the sixth reference loading module 4005 and the seventh reference loading module 4006 load the demodulation reference signal according to different manners according to the determination result, so that the loading of the demodulation reference signal is more flexible.

In practical application, it may also be determined whether the transmitting end device is a synchronization source transmitter, and then the following operations are performed according to the determination structure:

referring to fig. 41, another embodiment of the sending end device in the embodiment of the present invention includes:

a determining module 4101, configured to determine unoccupied resources in a synchronization signal subframe and/or a synchronization control channel subframe of the device-to-device D2D, where the synchronization signal subframe includes a synchronization signal and the synchronization control channel subframe includes a synchronization control channel;

a data loading module 4102, configured to load data on unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe determined by the determining module 4101;

a sending module 4103, configured to send the data loaded by the data loading module 4102 to a receiving end device;

the transmitting device further includes:

a quasi-station determining module 4104, configured to determine whether synchronization sources in a discovery group are quasi co-sited QCLs, where the QCLs are used to indicate that signals sent by multiple transmitting end devices in the discovery group may be approximate to signals from the same site, and the synchronization sources include the transmitting end devices and receiving end devices in the discovery group;

a sixth reference loading module 4105, configured to, when it is determined that QCLs exist between synchronization sources in the discovery group, not load a demodulation reference signal on the synchronization signal subframe or the synchronization control channel subframe, or load a fifth reference signal at a position outside the bandwidth of the synchronization signal or the synchronization control channel;

a seventh reference loading module 4106, configured to, when it is determined that there is no QCL between the synchronization sources in the transmission set, and a fourth reference signal is superposed and loaded on the symbol occupied by the synchronous signal in the synchronous signal subframe and/or the synchronous control channel subframe, or, loading a first reference signal on a symbol which is not occupied by a synchronization signal and is located at a position different from the synchronization signal in a synchronization signal subframe excluding a synchronization control channel, loading a second reference signal on a symbol which is not occupied by a synchronous control channel and is located at a position different from the synchronous control channel in a synchronous control channel subframe which does not include the synchronous signal, in a synchronization signal subframe or a synchronization control channel subframe including both a synchronization signal and a synchronization control channel, loading a third reference signal on a symbol which is not occupied by the synchronous signal and the synchronous control channel and is in a position different from the positions of the synchronous signal and the synchronous control channel;

in this embodiment, the transmitting end device further includes:

a synchronization source determining module 4107, configured to determine whether the transmitting end device is a synchronization source transmitter;

a first triggering module 4108, configured to trigger the quasi station determining module 4104 when it is determined that the transmitting end device is not a synchronization source transmitter;

an eighth reference loading module 4109, configured to, when it is determined that the transmitting end device is a synchronization source transmitter, not load a demodulation reference signal on the synchronization signal subframe or the synchronization control channel subframe, or load a fifth reference signal at a position outside the bandwidth of the synchronization signal or the synchronization control channel, or superimpose and load a fourth reference signal on a symbol occupied by the synchronization signal in the synchronization signal subframe and/or the synchronization control channel subframe, or load a first reference signal on a symbol unoccupied by the synchronization signal and at a position different from the synchronization signal in a synchronization signal subframe not including the synchronization control channel, load a second reference signal on a symbol unoccupied by the synchronization control channel and at a position different from the synchronization control channel in a synchronization signal subframe not including the synchronization signal, and load a second reference signal in a synchronization signal subframe or a synchronization control channel subframe including both the synchronization signal and the synchronization control channel, and loading a third reference signal on a symbol which is not occupied by the synchronous signal and the synchronous control channel and is in a position different from the synchronous signal and the synchronous control channel.

In the embodiment of the present invention, before the transmitting end device loads data and the demodulation reference signal, the synchronization source determining module 4107 first determines whether the transmitting end device is a synchronization source transmitter, and loads the demodulation reference signal according to different manners according to the determination result, so that the loading of the demodulation reference signal is more flexible.

In the above embodiments, the data loading module loads data on unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe, and in practical application, the transmitting end device further includes:

Secondly, the transmitting terminal equipment loads the data of the cellular link on the unoccupied resources.

1. In a downstream scenario of data:

In this scenario, the structure of the base station as the transmitting end device loading the data of the cellular link is similar to the structure of the D2D terminal as the transmitting end device loading the data of the D2D link, and is not described herein again.

2. In an upstream scenario of data:

The difference from the D2D terminal that is used as the sending end device to load the data of the D2D link is that the cellular terminal that is used as the sending end device does not know whether the subframe of the data to be sent is the synchronization signal subframe or the synchronization control channel subframe, but the cellular terminal that is used as the sending end device knows that the subframe is the synchronization signal subframe or the synchronization control channel subframe, so the sending end device needs to receive an indication message sent by the base station first to determine whether the currently transmitted subframe is the synchronization signal subframe or the synchronization control channel subframe, and therefore the sending end device needs to include a module for receiving the indication message, which is described below by taking several embodiments as examples:

referring to fig. 42, another embodiment of the transmitting device in the embodiment of the present invention includes:

when the data is cellular link data, the transmitting end device is a cellular link terminal, and the receiving end device is a base station, the transmitting end device includes:

a determining module 4201, configured to determine unoccupied resources in a synchronization signal subframe and/or a synchronization control channel subframe of the device-to-device D2D, where the synchronization signal subframe includes a synchronization signal and the synchronization control channel subframe includes a synchronization control channel;

a data loading module 4202, configured to load data on unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe determined by the determining module 4201;

a sending module 4203, configured to send the data loaded by the data loading module 4202 to a receiving end device;

the transmitting device further includes:

a receiving module 4204, configured to receive first indication information sent by the base station, where the first indication information is used to indicate whether a currently transmitted subframe of the cellular terminal is a synchronization signal subframe and/or a synchronization control channel subframe;

a second triggering module 4205, configured to trigger the determining module 4201 when the first indication information indicates that a currently transmitted subframe is a synchronization signal subframe and/or a synchronization control channel subframe.

In this embodiment of the present invention, when the sending-end device is a cellular terminal, the receiving module 4204 is required to receive first indication information sent by the base station first, and when the first indication information determines that the currently transmitted subframe is a synchronization signal subframe and/or a synchronization control channel subframe, the second triggering module 4205 triggers the determining module 4201, so that the unoccupied resources in the synchronization signal subframe and/or the synchronization control channel subframe may be used to transmit data of a cellular link, thereby widening the use range of the unoccupied resources.

Taking the embodiment shown in fig. 37 as an example, the transmitting end device loads the data of the D2D link on the unoccupied resource in a time division manner, and only needs to add a receiving module for receiving the first indication information and a triggering module for triggering the determining module into the transmitting end device, the transmitting end device can load the data of the cellular link on the unoccupied resource, and the specific changes are as follows:

the transmitting-end device includes:

the sending module is used for sending the data loaded by the data loading module to receiving end equipment;

in this implementation, the transmitting device further includes:

Optionally, the transmitting end device may further include:

a sequence generating module for generating a uniquely determined sequence corresponding to the first reference signal, the second reference signal or the third reference signal over a bandwidth of the data, or generating a first portion of the uniquely determined sequence corresponding to the first reference signal, the second reference signal or the third reference signal over a bandwidth in which the synchronization signal or the synchronization control channel is located, and generating a second portion of the sequence over the remaining bandwidth;

the transmitting-end device further includes:

and the second triggering module is used for triggering the determining module when the first indication information indicates that the currently transmitted subframe is a synchronous signal subframe and/or a synchronous control channel subframe.

As shown above, after the receiving module and the second triggering module are added, the transmitting end device loading the data of the D2D link in the above embodiments can be used to load the data of the cellular link.

It is understood that, after the receiving module 4204 and the second triggering module 4205 are added to each transmitting end device that loads data of the D2D link on the unoccupied resources, they can be applied to load data of the cellular link, and details are not described here.

The following describes the receiving end device in the embodiment of the present invention:

referring to fig. 43, an embodiment of a receiving end device in the embodiment of the present invention includes:

a first receiving module 4301, configured to receive data loaded in a synchronization signal subframe and/or a synchronization control channel subframe, where the synchronization signal subframe is a synchronization signal subframe of D2D, and the synchronization control channel subframe is a synchronization control channel subframe of D2D, and the data is sent by a transmitting end device;

a parsing module 4302, configured to parse the data in the synchronization signal subframe and/or the synchronization control channel subframe.

In the embodiment of the present invention, the first receiving module 4301 receives data loaded in a synchronization signal subframe and/or a synchronization control channel subframe, which is sent by a transmitting end device, and the analyzing module 4302 analyzes the data in the synchronization signal subframe and/or the synchronization control channel subframe, so that data is transmitted by using resources of a synchronization favorite subframe and/or a synchronization control channel subframe, thereby improving the utilization rate of resources.

1. the transmitting end device does not load a separate demodulation reference signal for data.

The parsing module 4302 may be specifically configured to use a synchronization signal as a demodulation reference signal of the data, and parse the data in the synchronization signal subframe and/or the synchronization control channel subframe.

In the embodiment of the present invention, the parsing module 4302 uses the synchronization signal as a demodulation reference signal of the loaded data to accurately parse the loaded data.

2. And the transmitting terminal equipment loads the demodulation reference signal in a time division mode.

Referring to fig. 44, another embodiment of the receiving end device in the embodiment of the present invention includes:

a first receiving module 4401, configured to receive data loaded in a synchronization signal subframe and/or a synchronization control channel subframe, where the synchronization signal subframe is a synchronization signal subframe of D2D, and the synchronization control channel subframe is a synchronization control channel subframe of D2D, and the synchronization control channel subframe is a synchronization control channel subframe of D2 3578;

an analyzing module 4402, configured to analyze the data in the synchronization signal subframe and/or the synchronization control channel subframe;

in this embodiment, the first receiving module 4401 specifically includes:

a first receiving unit 44011, configured to receive data and a first reference signal loaded on a synchronization signal subframe that does not include a synchronization control channel, where the first reference signal is loaded on a symbol that is not occupied by a synchronization signal and is located at a position different from the synchronization signal in the synchronization signal subframe that does not include the synchronization control channel;

a second receiving unit 44012, configured to receive data and a second reference signal loaded on a synchronization control channel subframe that does not include a synchronization signal, where the second reference signal is recorded on a symbol that is not occupied by a synchronization control channel and is at a position different from that of the synchronization control channel in the synchronization control channel subframe;

a third receiving unit 44013, configured to receive data and a third reference signal loaded on a synchronization signal subframe or a synchronization control channel subframe that includes a synchronization signal and a synchronization control channel, where the third reference signal is loaded on a symbol that is not occupied by the synchronization signal and the synchronization control channel and is in a position different from the synchronization signal and the synchronization control channel in the synchronization signal subframe or the synchronization control channel subframe;

the parsing module 4402 specifically includes:

a first parsing unit 44021, configured to parse, in a synchronization signal subframe that does not include a synchronization control channel, the data in the synchronization signal subframe that does not include the synchronization control channel by using the first reference signal as a demodulation reference signal of the data;

a second parsing unit 44022, configured to parse, in a synchronization control channel subframe that does not include a synchronization signal, the data in the synchronization control channel subframe that does not include the synchronization signal by using the second reference signal as a demodulation reference signal of the data;

a third parsing unit 44023, configured to parse the data in a synchronization signal subframe or a synchronization control channel subframe that includes a synchronization signal and a synchronization control channel, by using the third reference signal as a demodulation reference signal of the data.

In this embodiment of the present invention, the first parsing unit 44021, the second parsing unit 44022, and the third parsing unit 44023 use, by the receiving end device, the first reference signal, the second reference signal, or the third reference signal, which is loaded on the synchronization signal subframe or the synchronization control channel subframe in a time division manner, as the demodulation reference signal of the loaded data, so as to accurately parse the data loaded in the synchronization signal subframe or the synchronization control channel subframe.

3. The transmitting terminal equipment adopts a demodulation reference signal loaded in a superposition mode:

referring to fig. 43, another embodiment of the receiving end device in the embodiment of the present invention includes:

a parsing module 4302, configured to parse the data in the synchronization signal subframe and/or the synchronization control channel subframe;

in this embodiment, the first receiving module 4301 is specifically configured to receive data and a fourth reference signal loaded in a synchronization signal subframe and/or a synchronization control channel subframe, where the fourth reference signal is superimposed and loaded on a symbol occupied by a synchronization signal;

the parsing module 4302 is specifically configured to parse the data in the synchronization signal subframe and/or the synchronization control channel subframe by using the fourth reference signal as a demodulation reference signal of the data.

In the embodiment of the present invention, the parsing module 4302 uses the fourth reference signal loaded on the synchronization signal subframe or the synchronization control channel subframe in a superimposed manner as the demodulation reference signal of the loaded data, and accurately parses the data loaded in the synchronization signal subframe or the synchronization control channel subframe.

4. The transmitting terminal equipment loads demodulation reference signals at the positions outside the synchronous signals or the synchronous control channel bandwidth:

referring to fig. 45, another embodiment of the receiving end device in the embodiment of the present invention includes:

a first receiving module 4501, configured to receive data loaded in a synchronization signal subframe and/or a synchronization control channel subframe, where the synchronization signal subframe is a synchronization signal subframe of D2D, and the synchronization control channel subframe is a synchronization control channel subframe of D2D, and the synchronization control channel subframe is a synchronization control channel subframe of D2 3578;

a parsing module 4502 configured to parse the data in the synchronization signal subframe and/or synchronization control channel subframe;

in this embodiment, the first receiving module 4501 is specifically configured to receive data and a fifth reference signal loaded in a synchronization signal subframe and/or a synchronization control channel subframe, where the fifth reference signal is loaded at a position outside a bandwidth of a synchronization signal or a synchronization control channel in the synchronization signal subframe and/or the synchronization control channel subframe;

the parsing module 4502 specifically includes:

a fourth parsing unit 45021, configured to parse the data in the synchronization signal subframe or the synchronization control channel subframe including the synchronization signal, using the third reference signal and the synchronization signal as demodulation reference signals of the data, in the synchronization signal subframe or the synchronization control channel subframe including the synchronization signal;

a fifth parsing unit 45022, configured to parse the data in the synchronization control channel sub-frame without the synchronization signal, by using the third reference signal as a demodulation reference signal for data outside the bandwidth of the synchronization control channel, and using a demodulation reference signal dedicated to the synchronization control channel as a demodulation reference signal for data within the bandwidth of the synchronization control channel, in the synchronization control channel sub-frame without the synchronization signal.

In the embodiment of the present invention, for data beyond the bandwidth of the synchronization signal or the synchronization control channel, the fourth parsing unit 45021 and the fifth parsing unit 45022 perform parsing using the fifth reference signal loaded outside the bandwidth of the synchronization signal or the synchronization control channel, so as to accurately obtain the data loaded outside the bandwidth of the synchronization signal or the synchronization control channel.

5. The receiving end device comprises a module for receiving an indication signaling indicating whether each synchronization source in the discovery group is QCL or not, which is sent by the transmitting end device:

referring to fig. 46, another embodiment of the receiving end device in the embodiment of the present invention includes:

a first receiving module 4601, configured to receive data loaded in a synchronization signal subframe and/or a synchronization control channel subframe, where the synchronization signal subframe is a synchronization signal subframe of D2D, and the synchronization control channel subframe is a synchronization control channel subframe of D2D, and the data is sent by a transmitting end device;

a parsing module 4602, configured to parse the data in the synchronization signal subframe and/or the synchronization control channel subframe;

in this embodiment, the transmitting end device further includes:

a second receiving module 4603, configured to receive an indication signaling sent by the transmitting end device, where the indication signaling is used to indicate whether each synchronization source in a discovery group is a QCL, where the QCL is used to indicate that signals sent by multiple transmitting end devices in the discovery group are approximately signals from the same site, and the synchronization source includes the transmitting end device and a receiving end device in the discovery group;

the first receiving module 4601 specifically includes:

a fourth receiving unit 46011, configured to receive, when the indication signaling indicates that QCLs are located between synchronization sources in the discovery group, data loaded in a synchronization signal subframe and/or a synchronization control channel subframe, or receive data loaded in a synchronization signal subframe and/or a synchronization control channel subframe and a fifth reference signal loaded at a position outside a bandwidth of a synchronization signal or a synchronization control channel in the synchronization signal subframe and/or the synchronization control channel subframe;

a fifth receiving unit 46012, configured to, when the indication signaling indicates that QCL is not set between synchronization sources in the discovery group, receive data and a first reference signal loaded on a synchronization signal subframe that does not include a synchronization control channel, the first reference signal being loaded on a symbol that is not occupied by a synchronization signal and is in a different position from the synchronization signal in the synchronization signal subframe that does not include the synchronization control channel, receive data and a second reference signal loaded on a synchronization control channel subframe that does not include the synchronization signal, the second reference signal being recorded on a symbol that is not occupied by a synchronization control channel and is in a different position from the synchronization control channel in the synchronization control channel subframe, receive data and a third reference signal loaded on a synchronization signal subframe or a synchronization control channel subframe that includes the synchronization signal and the synchronization control channel, and the third reference signal being loaded on the synchronization signal subframe or the synchronization control channel subframe that is not occupied by the synchronization signal and the synchronization signal The method comprises the steps that a synchronous control channel occupies symbols at different positions from a synchronous signal and the synchronous control channel, or data and a fourth reference signal loaded in a synchronous signal subframe and/or a synchronous control channel subframe are received, and the fourth reference signal is superposed and loaded on the symbols occupied by the synchronous signal;

the parsing module 4602 specifically includes:

a sixth parsing module 46021, configured to, when the indication signaling indicates QCL is between the synchronization sources in the discovery group, parse the data in the synchronization signal subframe and/or synchronization control channel subframe using a synchronization signal as a demodulation reference signal for the data, or, in a synchronization signal subframe or synchronization control channel subframe including a synchronization signal, parse the data in the synchronization signal subframe or synchronization control channel subframe including a synchronization signal using the third reference signal and a synchronization signal as demodulation reference signals for the data, in a synchronization control channel subframe not including a synchronization signal, use the third reference signal as a demodulation reference signal for data outside a bandwidth of a synchronization control channel, and use a demodulation reference signal dedicated to a synchronization control channel as a demodulation reference signal for data within a bandwidth of a synchronization control channel, analyzing the data in the synchronous control channel subframe which does not comprise the synchronous signal;

a seventh parsing module 46022, configured to, when the indication signaling indicates that QCL is not set between synchronization sources in the discovery group, parse the data in a synchronization signal subframe that does not include a synchronization control channel using the first reference signal as a demodulation reference signal for the data in a synchronization signal subframe that does not include the synchronization control channel, parse the data in a synchronization control channel subframe that does not include the synchronization signal using the second reference signal as a demodulation reference signal for the data in a synchronization control channel subframe that does not include the synchronization signal, parse the data in a synchronization signal subframe or a synchronization control channel subframe that includes the synchronization signal and the synchronization control channel using the third reference signal as a demodulation reference signal for the data in a synchronization signal subframe or a synchronization control channel subframe that includes the synchronization signal and the synchronization control channel, or, the data in the synchronization signal subframe and/or the synchronization control channel subframe is analyzed by using the fourth reference signal as a demodulation reference signal of the data.

In the embodiment of the present invention, the receiving end device demodulates the loaded data in different manners according to the indication signaling received by the second receiving module 4703, so as to more accurately analyze the data in the synchronization signal subframe and/or the synchronization control channel subframe.

5. When data of the cellular link is loaded on the unoccupied resources.

Referring to fig. 47, another embodiment of the receiving end device in the embodiment of the present invention includes:

when the data is cellular link data, the transmitting end device is a base station, and the receiving end device is a cellular link terminal, the transmitting end device includes:

a first receiving module 4701, configured to receive data loaded in a synchronization signal subframe and/or a synchronization control channel subframe, where the synchronization signal subframe is a synchronization signal subframe of D2D, and the synchronization control channel subframe is a synchronization control channel subframe of D2D, and the data is sent by a transmitting end device;

a parsing module 4702 for parsing the data in the synchronization signal subframe and/or synchronization control channel subframe;

in this embodiment, the transmitting end device further includes:

a third receiving module 4703, configured to receive second indication information sent by the base station, where the second indication information is used to indicate whether a subframe currently received by the cellular link terminal is a synchronization signal subframe and/or a synchronization control channel subframe;

a third triggering module 4704 configured to trigger the first receiving module 4701 when the second indication information indicates that the currently received subframe is a synchronization signal and/or a synchronization control channel subframe.

In the embodiment of the present invention, when the receiving end device is a cellular link terminal and the sending end device is a base station, the third receiving module 4703 first receives second indication information sent by the sending end device, and when the second indication information indicates that the currently received subframe is a synchronization signal and/or synchronization control channel subframe, the third triggering module 4704 triggers the first receiving module 4701, so that the unoccupied resources in the synchronization signal subframe and/or synchronization control channel subframe can be used for transmitting data of the cellular link, thereby widening the use range of the unoccupied resources.

It can be understood that, when the receiving end device is a cellular link terminal, each embodiment of the receiving end device that receives data of the D2D link may be applied to a corresponding scenario of a cellular link as long as the third receiving module 4703 and the third triggering module 4704 are added, and details are not described here.

In the above, the receiving end device and the sending end device in the embodiment of the present invention are described from the perspective of a unitized functional entity, and in the following, the receiving end device and the sending end device in the embodiment of the present invention are described from the perspective of hardware processing, please refer to fig. 48, a schematic structural diagram of a network device 4800 in the embodiment of the present invention, which may represent either the receiving end device or the sending end device, and an embodiment of the network device includes:

an input device 4801, an output device 4802, a processor 4803, and a memory 4804 (where the number of processors 4803 in the network device 4800 may be one or more, one processor 4803 is exemplified in fig. 48). In some embodiments of the invention, the input device 4801, the output device 4802, the processor 4803, and the memory 4804 may be connected by a bus or other means, wherein the bus connection is illustrated in fig. 48.

With reference to fig. 48, a transmitting end device in the embodiment of the present invention is described:

another embodiment of the sending end device in the embodiment of the present invention includes:

the processor 4803, by invoking the operation instructions stored in the memory 4804, is configured to perform the following operations:

In some embodiments of the invention, the processor 4803 is further configured to:

loading a fifth reference signal in the synchronous signal subframe and/or the synchronous control channel subframe at a position outside the bandwidth of the synchronous signal or the synchronous control channel;

in some embodiments of the invention, the processor 4803 is specifically configured to perform the following operations:

when determining that the QCL is not set between the synchronization sources in the transmission group, a fourth reference signal is superimposed and loaded on a symbol occupied by the synchronization signal in the synchronization signal subframe and/or the synchronization control channel subframe, or, loading a first reference signal on a symbol which is not occupied by a synchronization signal and is located at a position different from the synchronization signal in a synchronization signal subframe excluding a synchronization control channel, loading a second reference signal on a symbol which is not occupied by a synchronous control channel and is located at a position different from the synchronous control channel in a synchronous control channel subframe which does not include the synchronous signal, in a synchronization signal subframe or a synchronization control channel subframe including both a synchronization signal and a synchronization control channel, loading a third reference signal on a symbol which is not occupied by the synchronous signal and the synchronous control channel and is in a position different from the positions of the synchronous signal and the synchronous control channel;

In some embodiments of the present invention, when the data is cellular link data, the transmitting end device is a cellular link terminal, and the receiving end device is a base station, the processor 4803 is further configured to:

With reference to fig. 48, a receiving end device in the embodiment of the present invention is described:

another embodiment of the receiving end device in the embodiment of the present invention includes:

the processor 4803 is specifically configured to perform the following operations:

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A signal transmission method, comprising:

a transmitting terminal device determines unoccupied resources in a synchronization signal subframe and a synchronization control channel subframe of a device-to-device D2D, wherein the synchronization signal subframe comprises a synchronization signal, the synchronization signal comprises a master synchronization signal and a slave synchronization signal, the synchronization control channel subframe comprises a synchronization control channel, and the transmitting terminal device is a base station;

the transmitting terminal equipment performs rate matching on the unoccupied resources in the synchronous signal subframe and the synchronous control channel;

the transmitting terminal equipment loads data on unoccupied resources in the synchronous signal sub-frame and the synchronous control channel sub-frame;

and the transmitting terminal equipment transmits the loaded data to receiving terminal equipment, wherein the receiving terminal equipment is a cellular link terminal.

2. The method of claim 1, wherein the step of the transmitting end device loading data on unoccupied resources in the synchronization signal sub-frame and synchronization control channel sub-frame is preceded by the step of:

3. The method of claim 2, wherein the first, second or third reference signals are each generated from a uniquely determined sequence, and the corresponding sequence generation method comprises:

4. The method of claim 1, wherein the step of the transmitting end device loading data on unoccupied resources in the synchronization signal sub-frame and synchronization control channel sub-frame is preceded by the step of:

and the transmitting terminal equipment superposes and loads a fourth reference signal on the symbol occupied by the synchronous signal in the synchronous signal subframe and the synchronous control channel subframe.

5. The method of claim 1, wherein the step of the transmitting end device loading data on unoccupied resources in the synchronization signal sub-frame and synchronization control channel sub-frame is preceded by the step of:

and the transmitting terminal equipment loads a fifth reference signal in the synchronous signal subframe and the synchronous control channel subframe and at a position outside the bandwidth of the synchronous signal or the synchronous control channel.

6. The method according to claim 5, wherein the transmitting end device loads a fifth reference signal at a position out of the bandwidth of the synchronization signal or the synchronization control channel in the synchronization signal subframe and the synchronization control channel subframe specifically includes:

the transmitting terminal equipment generates a demodulation reference sequence on the bandwidth of data in the synchronous signal subframe and the synchronous control channel subframe, deletes the part of the demodulation reference sequence on the bandwidth of the data, which is overlapped with the bandwidth of the synchronous signal or the control channel, and places the rest part of the demodulation reference sequence at a corresponding position to generate the fifth reference signal;

or, the transmitting end device generates the fifth reference signal at a position, on the bandwidth of the data in the synchronization signal subframe and the synchronization control channel subframe, where the position is not overlapped with the bandwidth of the synchronization signal or the synchronization control channel.

7. The method of claim 1, wherein the transmitting end device further comprises, before the step of loading data on unoccupied resources in the synchronization signal sub-frame and the control channel sub-frame:

the transmitting terminal equipment judges whether each synchronous source in a transmitting group is a quasi co-station QCL (quasi co-station QCL), the QCL is used for indicating that signals sent by a plurality of transmitting terminal equipment in the transmitting group can be approximate to signals from the same site, and the synchronous source comprises the transmitting terminal equipment and receiving terminal equipment in the transmitting group;

when the QCL is determined to be established among all the synchronous sources in the transmitting set, a demodulation reference signal is not loaded on the synchronous signal subframe or the synchronous control channel subframe, or a fifth reference signal is loaded at a position outside the bandwidth of the synchronous signal or the synchronous control channel;

when determining that the difference between the synchronous sources in the transmitting group is not QCL, a fourth reference signal is loaded on a symbol occupied by a synchronous signal in a synchronous signal subframe and a synchronous control channel subframe in a superposed manner, or a first reference signal is loaded on a symbol which is not occupied by the synchronous signal and is at a position different from the synchronous signal in the synchronous signal subframe not including the synchronous control channel, a second reference signal is loaded on a symbol which is not occupied by the synchronous control channel and is at a position different from the synchronous control channel in the synchronous control channel subframe not including the synchronous signal, and a third reference signal is loaded on a symbol which is not occupied by the synchronous signal and the synchronous control channel and is at a position different from the synchronous signal and the synchronous control channel in the synchronous signal subframe or the synchronous control channel subframe not including the synchronous signal and the synchronous control channel.

8. The method of claim 7, wherein the step of the transmitting end device determining whether each synchronization source in the transmitting group is a quasi co-sited QCL is preceded by the step of:

when the transmitting terminal equipment is determined not to be a synchronous source transmitter, triggering the transmitting terminal equipment to judge whether each synchronous source in a transmitting group is a quasi co-station QCL;

when the transmitting terminal equipment is determined to be a synchronous source transmitter, not loading a demodulation reference signal on the synchronous signal subframe or the synchronous control channel subframe, or loading a fifth reference signal on a position outside the bandwidth of the synchronous signal or the synchronous control channel, or loading a fourth reference signal on a symbol occupied by the synchronous signal in the synchronous signal subframe and the synchronous control channel subframe, or loading a first reference signal on a symbol which is not occupied by the synchronous signal and is at a position different from the synchronous signal in the synchronous signal subframe not including the synchronous control channel, loading a second reference signal on a symbol which is not occupied by the synchronous control channel and is at a position different from the synchronous control channel in the synchronous control channel subframe not including the synchronous signal and the synchronous control channel, in the synchronous signal subframe or the synchronous control channel subframe including both the synchronous signal and the synchronous control channel, and loading a third reference signal on a symbol which is not occupied by the synchronous signal and the synchronous control channel and is in a position different from the synchronous signal and the synchronous control channel.

9. The method according to any one of claims 1 to 8, wherein the data is data of a D2D link or data of a cellular link.

10. The method according to any of claims 1 to 8, wherein the unoccupied resources comprise:

subframes, symbols or bandwidth not occupied by the synchronization signal and synchronization control channel.

11. The method of any one of claims 1 to 8, wherein when the bandwidth of the data is greater than the bandwidth of the synchronization signal or synchronization control channel, the bandwidth of the data does not span the bandwidth of the synchronization signal or synchronization control channel; when the bandwidth of the data is less than the bandwidth of the synchronization signal or the synchronization control channel, the bandwidth of the data is within the bandwidth of the synchronization signal or the synchronization control channel.

12. The method according to any one of claims 1 to 8, wherein each synchronization signal subframe comprises two preceding and following slots, each slot comprising six symbols 0 to 5 in the synchronization signal subframe of extended cyclic prefix CP, and seven symbols 0 to 6 in the synchronization signal subframe of normal cyclic prefix CP;

or, when the synchronization signal subframe is a synchronization signal subframe of an extended Cyclic Prefix (CP), the primary synchronization signal and the secondary synchronization signal occupy symbol 0 and symbol 1 in a previous slot of the synchronization signal subframe and occupy symbol 3 and symbol 4 in a subsequent slot;

13. The method according to any one of claims 1 to 8, wherein each synchronization signal subframe comprises two preceding and following slots, each slot comprising six symbols 0 to 5 in the synchronization signal subframe of extended cyclic prefix CP, and seven symbols 0 to 6 in the synchronization signal subframe of normal cyclic prefix CP;

14. The method according to any of claims 1 to 8, wherein the synchronization control channel comprises: the device comprises a first synchronous control channel and a second synchronous control channel, wherein the first synchronous control channel is loaded by first transmitting terminal equipment, and the second synchronous control channel is loaded by second transmitting terminal equipment.

15. The method of claim 14,

16. The method according to claim 14, characterized in that the location occupied by the synchronization control channel is associated with predefined parameters;

17. A signal receiving method, comprising:

a cellular link terminal receives second indication information sent by a base station, wherein the second indication information is used for indicating whether a subframe currently received by the cellular terminal is a synchronous signal subframe and a synchronous control channel subframe, the cellular link terminal is a receiving terminal device, and the base station is a transmitting terminal device;

when the second indication information indicates that the currently received subframe is a synchronization signal subframe and a synchronization control channel subframe, the receiving end device receives data sent by the transmitting end device, the data is loaded on unoccupied resources in the synchronization signal subframe and the synchronization control channel subframe by the transmitting end device, the synchronization signal subframe is a synchronization signal subframe from device to device D2D, the synchronization signal subframe includes a synchronization signal, the synchronization signal includes a master synchronization signal and a slave synchronization signal, and the synchronization control channel subframe is a synchronization control channel subframe of D2D;

and the receiving end equipment analyzes the data in the synchronous signal subframe and the synchronous control channel subframe.

18. The method of claim 17, wherein the parsing the data in the synchronization signal subframe and the synchronization control channel subframe by the receiving device specifically comprises:

and the receiving terminal equipment takes the synchronous signal as a demodulation reference signal of the data and analyzes the data in the synchronous signal subframe and the synchronous control channel subframe.

19. The method according to claim 17, wherein the receiving end device receiving the data loaded in the synchronization signal subframe and the synchronization control channel subframe sent by the transmitting end device specifically comprises:

the analyzing, by the receiving end device, the data in the synchronization signal subframe and the synchronization control channel subframe specifically includes:

in a synchronization signal subframe which does not comprise a synchronization control channel, the receiving end equipment uses the first reference signal as a demodulation reference signal of the data to analyze the data in the synchronization signal subframe which does not comprise the synchronization control channel;

in a synchronization control channel subframe which does not include a synchronization signal, the receiving end equipment uses the second reference signal as a demodulation reference signal of the data to analyze the data in the synchronization control channel subframe which does not include the synchronization signal;

on a synchronization signal subframe or a synchronization control channel subframe including a synchronization signal and a synchronization control channel, the receiving end device uses the third reference signal as a demodulation reference signal of the data to resolve the data in the synchronization signal subframe or the synchronization control channel subframe including the synchronization signal and the synchronization control channel.

20. The method according to claim 17, wherein the receiving end device receiving the data loaded in the synchronization signal subframe and the synchronization control channel subframe sent by the transmitting end device specifically comprises:

the receiving end equipment receives data and a fourth reference signal loaded in a synchronous signal subframe and a synchronous control channel subframe, and the fourth reference signal is superposed and loaded on a symbol occupied by the synchronous signal;

and the receiving end equipment uses the fourth reference signal as a demodulation reference signal of the data to analyze the data in the synchronous signal subframe and the synchronous control channel subframe.

21. The method of claim 19, wherein the receiving end device receiving the data loaded in the synchronization signal subframe and the synchronization control channel subframe sent by the transmitting end device specifically comprises:

the receiving end equipment receives data and a fifth reference signal loaded in a synchronous signal subframe and a synchronous control channel subframe, wherein the fifth reference signal is loaded at a position outside the bandwidth of a synchronous signal or a synchronous control channel in the synchronous signal subframe and the synchronous control channel subframe;

in a synchronization signal subframe or a synchronization control channel subframe including a synchronization signal, the receiving end device uses the fifth reference signal and the synchronization signal as demodulation reference signals of the data to resolve the data in the synchronization signal subframe or the synchronization control channel subframe including the synchronization signal;

in the synchronization control channel subframe not including the synchronization signal, the receiving end device uses the fifth reference signal as a demodulation reference signal for data outside the bandwidth of the synchronization control channel, uses a demodulation reference signal dedicated to the synchronization control channel as a demodulation reference signal for data within the bandwidth of the synchronization control channel, and parses the data in the synchronization control channel subframe not including the synchronization signal.

22. The method of claim 17, wherein the receiving end device receives the data loaded in the synchronization signal sub-frame and the synchronization control channel sub-frame sent by the transmitting end device before the receiving end device receives the data loaded in the synchronization signal sub-frame and the synchronization control channel sub-frame, further comprising:

the receiving end device receives an indication signaling sent by the transmitting end device, where the indication signaling is used to indicate whether each synchronization source in a transmitting group is a QCL, the QCL is used to indicate that signals sent by multiple transmitting end devices in the transmitting group are approximately signals from the same site, and the synchronization source includes the transmitting end device and the receiving end device in the transmitting group;

the receiving end device receiving the data loaded in the synchronization signal subframe and the synchronization control channel subframe sent by the transmitting end device specifically includes:

when the indication signaling indicates that QCLs are among the synchronization sources in the transmission group, the receiving end device receives data loaded in a synchronization signal subframe and a synchronization control channel subframe, or the receiving end device receives data loaded in the synchronization signal subframe and the synchronization control channel subframe and a fifth reference signal loaded at a position out of the bandwidth of the synchronization signal or the synchronization control channel in the synchronization signal subframe and the synchronization control channel subframe;

when the indication signaling indicates that the QCL is not set between the synchronization sources in the transmission group, the receiving end device receives data and a first reference signal loaded on a synchronization signal subframe not including a synchronization control channel, the first reference signal being loaded on a symbol which is not occupied by a synchronization signal and is in a position different from the synchronization signal in the synchronization signal subframe not including the synchronization control channel, the receiving end device receives data and a second reference signal loaded on a synchronization control channel subframe not including the synchronization signal, the second reference signal being recorded on a symbol which is not occupied by the synchronization control channel and is in a position different from the synchronization control channel in the synchronization control channel subframe, the receiving end device receives data and a third reference signal loaded on a synchronization signal subframe or a synchronization control channel subframe including the synchronization signal and the synchronization control channel, the third reference signal is loaded on a symbol which is not occupied by the synchronous signal and the synchronous control channel in the synchronous signal subframe or the synchronous control channel subframe and is at a position different from the positions of the synchronous signal and the synchronous control channel, or the receiving end equipment receives data and a fourth reference signal loaded in the synchronous signal subframe and the synchronous control channel subframe, and the fourth reference signal is superposed and loaded on the symbol occupied by the synchronous signal;

when the indication signaling indicates that QCL is between each synchronization source in the transmission group, the receiving end uses a synchronization signal as a demodulation reference signal of the data to resolve the data in the synchronization signal subframe and the synchronization control channel subframe, or, in a synchronization signal subframe or a synchronization control channel subframe including a synchronization signal, the receiving end device uses the fifth reference signal and the synchronization signal as demodulation reference signals of the data to resolve the data in the synchronization signal subframe or the synchronization control channel subframe including the synchronization signal, and in a synchronization control channel subframe not including the synchronization signal, the receiving end device uses the fifth reference signal as a demodulation reference signal of data outside the bandwidth of the synchronization control channel and uses a demodulation reference signal dedicated to the synchronization control channel as a demodulation reference signal of data within the bandwidth of the synchronization control channel, analyzing the data in the synchronous control channel subframe which does not comprise the synchronous signal;

when the indication signaling indicates that the difference between the synchronization sources in the transmission group is not QCL, the receiving end device uses the first reference signal as a demodulation reference signal of the data to resolve the data in the synchronization signal subframe excluding the synchronization control channel in a synchronization signal subframe excluding the synchronization control channel, uses the second reference signal as a demodulation reference signal of the data in a synchronization control channel subframe excluding the synchronization signal to resolve the data in the synchronization control channel subframe excluding the synchronization signal, and uses the third reference signal as a demodulation reference signal of the data on a synchronization signal subframe or a synchronization control channel subframe including the synchronization signal and the synchronization control channel to resolve the data in the synchronization signal subframe or the synchronization control channel subframe including the synchronization signal and the synchronization control channel, or, the receiving end device uses the fourth reference signal as a demodulation reference signal of the data to resolve the data in the synchronization signal subframe and the synchronization control channel subframe.

23. The method according to any one of claims 17 to 22, wherein the data is D2D data, or cellular data.

24. A transmitting-end device, comprising:

a determining module, configured to determine unoccupied resources in a synchronization signal subframe and a synchronization control channel subframe of device-to-device D2D, where the synchronization signal subframe includes a synchronization signal, the synchronization signal includes a master synchronization signal and a slave synchronization signal, the synchronization control channel subframe includes a synchronization control channel, and the transmitting end device is a base station;

the rate matching module is used for performing rate matching on the synchronization signal subframe and unoccupied resources in the synchronization control channel;

a data loading module, configured to load data on unoccupied resources in the synchronization signal subframe and the synchronization control channel subframe determined by the determining module;

and the sending module is used for sending the data loaded by the data loading module to receiving end equipment, and the receiving end equipment is a cellular link terminal.

25. The transmitting-side apparatus according to claim 24, further comprising:

26. The transmitting-side device according to claim 25, further comprising:

27. The transmitting-side apparatus according to claim 24, further comprising:

and the fourth reference loading module is used for loading a fourth reference signal on the symbol occupied by the synchronous signal in the synchronous signal subframe and the synchronous control channel subframe in a superposed manner.

28. The transmitting-side apparatus according to claim 24, further comprising:

and the fifth reference loading module is used for loading a fifth reference signal at a position out of the bandwidth of the synchronous signal or the synchronous control channel in the synchronous signal subframe and the synchronous control channel subframe.

29. The transmitting device of claim 28, wherein the fifth reference loading module is specifically configured to generate a demodulation reference sequence over a bandwidth of data in the synchronization signal subframe and the synchronization control channel subframe, delete a portion of the demodulation reference sequence over the bandwidth of data that overlaps with a bandwidth of a synchronization signal or a control channel, and place a remaining portion of the demodulation reference sequence at a corresponding position to generate the fifth reference signal, or generate the fifth reference signal at a position that does not overlap with the bandwidth of the synchronization signal or the synchronization control channel in the bandwidth of data in the synchronization signal subframe and the synchronization control channel subframe.

30. The transmitting-side apparatus according to claim 24, further comprising:

the quasi co-station judging module is used for judging whether each synchronous source in a transmitting group is a quasi co-station QCL (quaternary clock rate limit) or not, the QCL is used for indicating that signals sent by a plurality of transmitting terminal devices in the transmitting group can be approximate to signals from the same site, and the synchronous source comprises the transmitting terminal devices and receiving terminal devices in the transmitting group;

a sixth reference loading module, configured to, when it is determined that QCL exists between synchronization sources in the transmission group, not load a demodulation reference signal on the synchronization signal subframe or the synchronization control channel subframe, or load a fifth reference signal at a position outside a bandwidth of the synchronization signal or the synchronization control channel;

a seventh reference loading module for loading the QCL of each synchronization source in the transmission set, and a fourth reference signal is superposed and loaded on the symbols occupied by the synchronous signals in the synchronous signal subframe and the synchronous control channel subframe, or, loading a first reference signal on a symbol which is not occupied by a synchronization signal and is located at a position different from the synchronization signal in a synchronization signal subframe excluding a synchronization control channel, loading a second reference signal on a symbol which is not occupied by a synchronous control channel and is located at a position different from the synchronous control channel in a synchronous control channel subframe which does not include the synchronous signal, in a synchronization signal subframe or a synchronization control channel subframe including both a synchronization signal and a synchronization control channel, and loading a third reference signal on a symbol which is not occupied by the synchronous signal and the synchronous control channel and is in a position different from the synchronous signal and the synchronous control channel.

31. The transmitting-side apparatus according to claim 30, further comprising:

the first triggering module is used for triggering the quasi co-station judging module when the transmitting terminal equipment is determined not to be a synchronous source transmitter;

an eighth reference loading module, configured to, when it is determined that the transmitting end device is a synchronization source transmitter, not load a demodulation reference signal on the synchronization signal subframe or the synchronization control channel subframe, or load a fifth reference signal on a position outside a bandwidth of the synchronization signal or the synchronization control channel, or superimpose and load a fourth reference signal on a symbol occupied by the synchronization signal in the synchronization signal subframe and the synchronization control channel subframe, or load a first reference signal on a symbol unoccupied by the synchronization signal and at a position different from the synchronization signal in the synchronization signal subframe not including the synchronization control channel, load a second reference signal on a symbol unoccupied by the synchronization control channel and at a position different from the synchronization control channel in the synchronization control channel subframe not including the synchronization signal and the synchronization control channel, and load the second reference signal in the synchronization signal subframe or the synchronization control channel subframe including both the synchronization signal and the synchronization control channel, and loading a third reference signal on a symbol which is not occupied by the synchronous signal and the synchronous control channel and is in a position different from the synchronous signal and the synchronous control channel.

32. A receiving-end device, comprising:

a third receiving module, configured to receive second indication information sent by a base station, where the second indication information is used to indicate whether a currently received subframe of a cellular link terminal is a synchronization signal subframe and a synchronization control channel subframe, the base station is a transmitting end device, and the cellular link terminal is a receiving end device;

the third triggering module is used for triggering the first receiving module when the second indication information indicates that the currently received subframe is a synchronous signal and a synchronous control channel subframe;

the first receiving module is configured to receive data sent by the transmitting end device, where the data is loaded on unoccupied resources in the synchronization signal subframe and a synchronization control channel subframe, the synchronization signal subframe is a synchronization signal subframe of device-to-device D2D, the synchronization signal subframe includes a synchronization signal, the synchronization signal includes a master synchronization signal and a slave synchronization signal, and the synchronization control channel subframe is a synchronization control channel subframe of D2D;

and the analysis module is used for analyzing the data in the synchronous signal subframe and the synchronous control channel subframe.

33. The receiving end device of claim 32, wherein the parsing module is specifically configured to parse the data in the synchronization signal subframe and the synchronization control channel subframe by using a synchronization signal as a demodulation reference signal for the data.

34. The receiving-end device of claim 32,

the first receiving module specifically includes:

the analysis module specifically comprises:

35. The receiving-end device of claim 32,

the first receiving module is specifically configured to receive data and a fourth reference signal loaded in a synchronization signal subframe and a synchronization control channel subframe, where the fourth reference signal is superimposed and loaded on a symbol occupied by a synchronization signal;

the parsing module is specifically configured to parse the data in the synchronization signal subframe and the synchronization control channel subframe by using the fourth reference signal as a demodulation reference signal of the data.

36. The receiving-end device of claim 32,

the first receiving module is specifically configured to receive data and a fifth reference signal loaded in a synchronization signal subframe and a synchronization control channel subframe, where the fifth reference signal is loaded at a position outside a bandwidth of a synchronization signal or a synchronization control channel in the synchronization signal subframe and the synchronization control channel subframe;

the analysis module specifically comprises:

a fourth parsing unit, configured to parse the data in the synchronization signal subframe or the synchronization control channel subframe including the synchronization signal by using the fifth reference signal and the synchronization signal as demodulation reference signals of the data in the synchronization signal subframe or the synchronization control channel subframe including the synchronization signal;

and a fifth parsing unit, configured to parse the data in the synchronization control channel subframe that does not include the synchronization signal, by using the fifth reference signal as a demodulation reference signal for data outside a bandwidth of the synchronization control channel, and by using a demodulation reference signal dedicated to the synchronization control channel as a demodulation reference signal for data within the bandwidth of the synchronization control channel.

37. The sink device according to claim 32, wherein the sink device further comprises:

a second receiving module, configured to receive an indication signaling sent by the transmitting end device, where the indication signaling is used to indicate whether each synchronization source in a transmitting group is a QCL, where the QCL is used to indicate that signals sent by multiple transmitting end devices in the transmitting group are approximately signals from a same site, and the synchronization source includes the transmitting end device and a receiving end device in the transmitting group;

the first receiving module specifically includes:

a fourth receiving unit, configured to receive, when the indication signaling indicates that QCLs are used among the synchronization sources in the transmission group, data loaded in a synchronization signal subframe and a synchronization control channel subframe, or receive data loaded in the synchronization signal subframe and the synchronization control channel subframe and a fifth reference signal loaded at a position outside a bandwidth of a synchronization signal or a synchronization control channel in the synchronization signal subframe and the synchronization control channel subframe;

a fifth receiving unit, configured to receive, when the indication signaling indicates that the QCL is not set between the synchronization sources in the transmission group, data and a first reference signal loaded on a synchronization signal subframe that does not include a synchronization control channel, the first reference signal being loaded on a symbol that is not occupied by a synchronization signal and is in a different position from the synchronization signal in the synchronization signal subframe that does not include the synchronization control channel, receive data and a second reference signal loaded on a synchronization control channel subframe that does not include the synchronization signal, the second reference signal being recorded on a symbol that is not occupied by a synchronization control channel and is in a different position from the synchronization control channel in the synchronization control channel subframe, receive data and a third reference signal loaded on a synchronization signal subframe or a synchronization control channel subframe that includes the synchronization signal and the synchronization control channel, the third reference signal being loaded on the synchronization signal subframe or the synchronization control channel subframe that is not occupied by the synchronization signal and the synchronization signal The method comprises the steps that a step control channel occupies symbols at different positions from a synchronous signal and a synchronous control channel, or data and a fourth reference signal loaded in a synchronous signal subframe and a synchronous control channel subframe are received, and the fourth reference signal is superposed and loaded on the symbols occupied by the synchronous signal;

the analysis module specifically comprises:

a sixth parsing module, configured to, when the indication signaling indicates QCL is between the synchronization sources in the transmission group, parse the data in the synchronization signal subframe and the synchronization control channel subframe by using a synchronization signal as a demodulation reference signal for the data, or, in a synchronization signal subframe or a synchronization control channel subframe including a synchronization signal, parse the data in the synchronization signal subframe or the synchronization control channel subframe including a synchronization signal by using the fifth reference signal and the synchronization signal as a demodulation reference signal for the data, in a synchronization control channel subframe not including a synchronization signal, use the fifth reference signal as a demodulation reference signal for data outside a bandwidth of a synchronization control channel, and use a demodulation reference signal dedicated to the synchronization control channel as a demodulation reference signal for data within the bandwidth of the synchronization control channel, analyzing the data in the synchronous control channel subframe which does not comprise the synchronous signal;

a seventh parsing module, configured to, when the indication signaling indicates that QCL is not set between synchronization sources in the transmission group, parse the data in a synchronization signal subframe that does not include a synchronization control channel using the first reference signal as a demodulation reference signal for the data in a synchronization signal subframe that does not include the synchronization control channel, parse the data in a synchronization control channel subframe that does not include the synchronization signal using the second reference signal as a demodulation reference signal for the data in a synchronization control channel subframe that does not include the synchronization signal, parse the data in a synchronization signal subframe or a synchronization control channel subframe that includes the synchronization signal and the synchronization control channel using the third reference signal as a demodulation reference signal for the data on the synchronization signal subframe or the synchronization control channel subframe that includes the synchronization signal and the synchronization control channel, or, the data in the synchronization signal subframe and the synchronization control channel subframe are analyzed by using the fourth reference signal as a demodulation reference signal of the data.

38. A transmitting-end device, comprising:

an input device, an output device, a processor and a memory;

determining unoccupied resources in a synchronization signal subframe and a synchronization control channel subframe of device-to-device D2D, wherein the synchronization signal subframe comprises a synchronization signal, the synchronization signal comprises a master synchronization signal and a slave synchronization signal, the synchronization control channel subframe comprises a synchronization control channel, and the transmitting end device is a base station;

performing rate matching on the unoccupied resources in the synchronization signal subframe and the synchronization control channel;

loading data on unoccupied resources in the determined synchronization signal sub-frame and synchronization control channel sub-frame;

and sending the loaded data to a receiving end device, wherein the receiving end device is a cellular link terminal.

39. The transmitting-side device of claim 38, wherein the processor is further configured to:

40. The transmitting-side device of claim 39, wherein the processor is further configured to:

41. The transmitting-side device of claim 38, wherein the processor is further configured to:

and superposing and loading a fourth reference signal on the symbol occupied by the synchronous signal in the synchronous signal subframe and the synchronous control channel subframe.

42. The transmitting-side device of claim 38, wherein the processor is further configured to:

and loading a fifth reference signal at a position out of the bandwidth of the synchronous signal or the synchronous control channel in the synchronous signal subframe and the synchronous control channel subframe.

43. The transmitting-end device of claim 42, wherein the processor is specifically configured to:

and generating a demodulation reference sequence on the bandwidth of data in the synchronization signal subframe and the synchronization control channel subframe, deleting a part of the demodulation reference sequence on the bandwidth of the data, which is overlapped with the bandwidth of the synchronization signal or the control channel, and putting the rest part of the demodulation reference sequence at a corresponding position to generate the fifth reference signal, or generating the fifth reference signal at a position, which is not overlapped with the bandwidth of the synchronization signal or the synchronization control channel, on the bandwidth of the data in the synchronization signal subframe and the synchronization control channel subframe.

44. The transmitting-side device of claim 38, wherein the processor is further configured to:

judging whether each synchronization source in a transmitting group is a quasi co-station QCL (quasi co-location QCL), wherein the QCL is used for indicating that signals sent by a plurality of transmitting terminal equipment in the transmitting group can be approximate to signals from the same site, and the synchronization source comprises transmitting terminal equipment and receiving terminal equipment in the transmitting group;

45. The transmitting-side device of claim 44, wherein the processor is further configured to:

when the transmitting terminal equipment is determined not to be a synchronous source transmitter, triggering the operation of judging whether each synchronous source in the transmitting group is a quasi co-station QCL or not;

46. A receiving-end device, comprising:

an input device, an output device, a processor and a memory;

receiving second indication information sent by a base station, wherein the second indication information is used for indicating whether a currently received subframe of a cellular link terminal is a synchronous signal subframe and/or a synchronous control channel subframe, the base station is transmitting terminal equipment, and the cellular link terminal is receiving terminal equipment;

when the second indication information indicates that the currently received subframe is a synchronization signal and/or a synchronization control channel subframe, receiving data sent by a transmitting end device, wherein the data is loaded by the transmitting end device on unoccupied resources in the synchronization signal subframe and the synchronization control channel subframe, the synchronization signal subframe is a synchronization signal subframe of device-to-device D2D, the synchronization signal subframe includes a synchronization signal, the synchronization signal includes a master synchronization signal and a slave synchronization signal, and the synchronization control channel subframe is a synchronization control channel subframe of D2D;

and analyzing the data in the synchronous signal subframe and the synchronous control channel subframe.

47. The receiving end device of claim 46, wherein the processor is specifically configured to perform the following operations:

and taking the synchronous signal as a demodulation reference signal of the data, and analyzing the data in the synchronous signal subframe and the synchronous control channel subframe.

48. The receiving end device of claim 46, wherein the processor is specifically configured to perform the following operations:

49. The receiving end device of claim 46, wherein the processor is specifically configured to perform the following operations:

receiving data and a fourth reference signal loaded in a synchronous signal subframe and a synchronous control channel subframe, wherein the fourth reference signal is superposed and loaded on a symbol occupied by the synchronous signal;

and analyzing the data in the synchronous signal subframe and the synchronous control channel subframe by using the fourth reference signal as a demodulation reference signal of the data.

50. The receiving end device of claim 48, wherein the processor is specifically configured to perform the following operations:

receiving data and a fifth reference signal loaded in a synchronous signal subframe and a synchronous control channel subframe, wherein the fifth reference signal is loaded at a position out of the bandwidth of a synchronous signal or a synchronous control channel in the synchronous signal subframe and the synchronous control channel subframe;

in a synchronous signal subframe or a synchronous control channel subframe which comprises a synchronous signal, the fifth reference signal and the synchronous signal are used as demodulation reference signals of the data, and the data in the synchronous signal subframe or the synchronous control channel subframe which comprises the synchronous signal is analyzed;

and in the synchronous control channel subframe which does not comprise the synchronous signal, the fifth reference signal is used as a demodulation reference signal of data outside the bandwidth of the synchronous control channel, a demodulation reference signal special for the synchronous control channel is used as a demodulation reference signal of data in the bandwidth of the synchronous control channel, and the data in the synchronous control channel subframe which does not comprise the synchronous signal is analyzed.

51. The receiving-end device of claim 46, wherein the processor is further configured to:

receiving an indication signaling sent by the transmitting terminal device, where the indication signaling is used to indicate whether each synchronization source in a transmitting group is a QCL, where the QCL is used to indicate that signals sent by multiple transmitting terminal devices in the transmitting group are approximately signals from the same site, and the synchronization source includes the transmitting terminal device and a receiving terminal device in the transmitting group;

the processor is specifically configured to perform the following operations:

when the indication signaling indicates that QCL is established among all synchronous sources in the transmitting set, receiving data loaded in a synchronous signal subframe and a synchronous control channel subframe, or receiving data loaded in the synchronous signal subframe and the synchronous control channel subframe and a fifth reference signal, wherein the fifth reference signal is loaded at a position out of the bandwidth of a synchronous signal or a synchronous control channel in the synchronous signal subframe and the synchronous control channel subframe;

when the indication signaling indicates that the synchronous sources in the transmitting group are not QCL, receiving data and a first reference signal loaded on a synchronous signal subframe not including a synchronous control channel, the first reference signal being loaded on symbols which are not occupied by the synchronous signal and are at different positions from the synchronous signal in the synchronous signal subframe not including the synchronous control channel, receiving data and a second reference signal loaded on a synchronous control channel subframe not including the synchronous signal, the second reference signal being recorded on symbols which are not occupied by the synchronous control channel and are at different positions from the synchronous control channel in the synchronous control channel subframe, receiving data and a third reference signal loaded on a synchronous signal subframe or a synchronous control channel subframe including the synchronous signal and the synchronous control channel, and the third reference signal being loaded on symbols which are not occupied by the synchronous signal and the synchronous control channel in the synchronous signal subframe or the synchronous control channel subframe and are at different positions from the synchronous control channel The method comprises the steps that symbols at different positions of a synchronous signal and a synchronous control channel are obtained, or data and a fourth reference signal loaded in a synchronous signal subframe and a synchronous control channel subframe are received, and the fourth reference signal is superposed and loaded on the symbols occupied by the synchronous signal;

when the indication signaling indicates that QCL is established among the synchronization sources in the transmission group, a synchronization signal is used as a demodulation reference signal of the data to analyze the data in a synchronization signal subframe and a synchronization control channel subframe, or the fifth reference signal and the synchronization signal are used as demodulation reference signals of the data in the synchronization signal subframe or the synchronization control channel subframe including the synchronization signal to analyze the data in the synchronization signal subframe or the synchronization control channel subframe including the synchronization signal, the fifth reference signal is used as a demodulation reference signal of data outside the bandwidth of the synchronization control channel in the synchronization control channel subframe not including the synchronization signal, and a demodulation reference signal special for the synchronization control channel is used as a demodulation reference signal of the data inside the bandwidth of the synchronization control channel, analyzing the data in the synchronous control channel subframe which does not comprise the synchronous signal;

when the indication signaling indicates that the QCL is not set between the synchronous sources in the transmission group, in a synchronous signal subframe which does not include a synchronous control channel, the data in the synchronous signal subframe which does not include the synchronous control channel is analyzed by using the first reference signal as a demodulation reference signal of the data, in a synchronous control channel subframe which does not include the synchronous signal, the data in the synchronous control channel subframe which does not include the synchronous signal is analyzed by using the second reference signal as a demodulation reference signal of the data, and in a synchronous signal subframe or a synchronous control channel subframe which includes the synchronous signal and the synchronous control channel, the data in the synchronous signal subframe or the synchronous control channel subframe which includes the synchronous signal and the synchronous control channel is analyzed by using the third reference signal as a demodulation reference signal of the data, or, the data in the synchronization signal subframe and the synchronization control channel subframe are analyzed by using the fourth reference signal as a demodulation reference signal of the data.