CN111490814B

CN111490814B - Method and device in wireless transmission

Info

Publication number: CN111490814B
Application number: CN202010258494.9A
Authority: CN
Inventors: 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2016-07-11
Filing date: 2016-07-12
Publication date: 2021-06-25
Anticipated expiration: 2036-07-12
Also published as: CN111490814A; CN107623539B; CN107623539A

Abstract

The invention discloses a method and a device in wireless transmission. The UE first receives a first wireless signal on a first time-frequency resource and then receives a second wireless signal on a second time-frequency resource. Wherein the second time frequency resource is one of K candidate resources, and a position of the second time frequency resource in the K candidate resources is related to a time domain position of the first time frequency resource in a time unit. The first wireless signal comprises a first synchronization signal and the second wireless signal comprises a second synchronization signal. The K is a positive integer greater than 1. The invention enables the UE to determine the starting time of the time unit, and in addition, the invention ensures that the UE in different beam directions can accurately receive the synchronous signal and the broadcast signal.

Description

Method and device in wireless transmission

The present application is a divisional application of the following original applications:

application date of the original application: 2016.07.12

- -application number of the original application: 201610546216.7

The invention of the original application is named: method and device in wireless transmission

Technical Field

The present invention relates to a method and an apparatus for downlink transmission in the field of wireless communication technologies, and in particular, to a downlink transmission scheme for a first synchronization signal.

Background

Large scale (Massive) MIMO has become a research hotspot for next generation mobile communications. In large-scale MIMO, multiple antennas form a narrow beam pointing to a specific direction by beamforming to improve communication quality. The beam formed by multi-antenna beamforming is generally narrow, so the coverage of the second synchronization signal is a problem to be solved.

A Beam Sweeping (Beam Sweeping) scheme is proposed in a #74bis conference of 3GPP (3rd Generation Partner Project) RAN (Radio Access Network ) WG (Working Group) 1, that is, a base station transmits a second synchronization signal for multiple times in a TDM (time Division Multiplexing) manner, and transmits a Beam for different directions each time.

Disclosure of Invention

The inventor finds, through research, that when a first synchronization signal is transmitted in a beam sweeping manner, a UE (User Equipment) is likely to not determine a specific position of the received first synchronization signal in a time domain, and therefore how to implement time synchronization is a problem that needs to be researched and solved.

The present invention discloses a solution to the above problems. It should be noted that, without conflict, the embodiments and features in the embodiments in the UE of the present application may be applied to the base station, and vice versa. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict. Further, although the invention was originally intended for multi-antenna transmission, the invention is also applicable to single-antenna transmission.

The invention discloses a method used in UE of multi-antenna transmission, wherein the method comprises the following steps:

-a. receiving a first wireless signal on a first time-frequency resource;

-step b. receiving a second radio signal on a second time-frequency resource;

wherein the second time frequency resource is one of K candidate resources, and a position of the second time frequency resource in the K candidate resources is related to a time domain position of the first time frequency resource in a time unit. The first wireless signal comprises a first synchronization signal and the second wireless signal comprises a second synchronization signal. The K is a positive integer greater than 1.

As an embodiment, the UE determines the start time of the time unit based on an association between the first synchronization signal and the corresponding second synchronization signal.

The embodiment has the advantages that no extra information bit is utilized to assist the UE to obtain the time unit synchronization, the signaling overhead is saved, and the transmission efficiency is improved.

In one embodiment, the first synchronization signal includes at least one of a { Zadoff-Chu sequence, a pseudo-random sequence }.

As an embodiment, the first wireless signal and the second wireless signal are transmitted by a same antenna port group, the antenna port group comprising a positive integer number of antenna ports.

As an embodiment, the first synchronization signal is transmitted on a synchronization channel (i.e. a downlink channel that can only be used to carry the first synchronization signal). As one embodiment, the Synchronization CHannel includes at least one of a P-SCH (Primary Synchronization CHannel) and an S-SCH (Secondary Synchronization CHannel).

As an embodiment, the first Synchronization Signal includes at least the former of { PSS (Primary Synchronization Signal, Primary first Synchronization Signal), SSS (Secondary Synchronization Signal) }.

As an embodiment, the first synchronization Signal includes at least the former of { NB (Narrow Band) -PSS (primary synchronization Signal), NB (Narrow Band) -SSS (secondary synchronization Signal) }.

As an embodiment, the second synchronization signal is transmitted on a broadcast channel (i.e. a downlink channel that can only be used to carry broadcast signals). As one embodiment, the Broadcast CHannel includes a PBCH (Physical Broadcast CHannel).

As one embodiment, the second synchronization signal includes a synchronization sequence. As a sub-embodiment, the synchronization sequence comprises at least one of a { pseudo-random sequence, a Zadoff-Chu sequence }.

As one embodiment, the second synchronization signal includes SSS.

In one embodiment, the second synchronization signal includes an NB-SSS.

As an embodiment, the second synchronization signal is used to determine a system time. As an example, the System time is indexed by SFN (System Frame Number).

As an embodiment, the second synchronization signal includes { MIB (Master Information Block), SIB (System Information Block) }.

As one embodiment, the second synchronization signal is transmitted on an NB-PBCH (for NB-IoT terminals).

As one embodiment, the time unit is one sub-frame.

As one embodiment, the time unit is Q consecutive subframes, where Q is a positive integer.

As an embodiment, the time unit is 1ms, wherein the start time of the time unit and the subframe are not synchronized.

As an embodiment, the positions of the second wireless signal on the K candidate resources and the time domain position of the first wireless signal in the time unit are associated, so the UE can determine the time domain position of the first wireless signal in the time unit by determining the positions of the second wireless signal on the K candidate resources, thereby achieving synchronization over the time unit.

Specifically, according to an aspect of the present invention, the step a further includes the steps of:

-step A0. determining the K candidate resources from the first time-frequency resource.

As an embodiment, the positions of the K candidate resources in the time domain are the same, the positions of the K candidate resources in the time domain and the position of the first time-frequency resource in the time domain are associated, and the positions of the K candidate resources in the frequency domain and the position of the first time-frequency resource in the frequency domain are associated.

As an embodiment, the positions of the K candidate resources in the frequency domain are the same, the positions of the K candidate resources in the time domain are different, and the positions of the K candidate resources in the time domain and the position of the first time-frequency resource in the time domain are associated.

As an embodiment, the positions of the K candidate resources in the time-frequency domain and the position of the first time-frequency resource in the time-frequency domain are associated.

Specifically, according to an aspect of the present invention, the step B further includes the steps of:

-step B0. monitoring the second wireless signal over the K candidate resources.

As an embodiment, the monitoring refers to blind decoding, that is, performing a decoding operation on the received signal in each of the candidate resources, and judging correct reception if the decoding is determined to be correct according to the check bits, otherwise, judging incorrect reception.

In this embodiment, the UE determines the time domain position of the first wireless signal in the time unit by determining the position of the second wireless signal on the K candidate resources, so as to achieve synchronization in the time unit.

-a step a1. receiving K1 first synchronization signals;

the time domain resources occupied by the first time frequency resources and the time domain resources occupied by the K1 first synchronization signals are orthogonal, and the time domain resources occupied by any two first synchronization signals in the K1 first synchronization signals are orthogonal. The K1 is a positive integer.

As an embodiment, the first synchronization signal and the K1 first synchronization signals in the first wireless signal constitute K3 first synchronization signals, the K3 first synchronization signals are consecutive in a time domain, and the K3 is a sum of the K1 and 1.

As an example, the K3 first synchronization signals carry the same information.

As an embodiment, the K3 first synchronization signals correspond to the same synchronization sequence.

As an example, the orthogonal means not overlapping.

As an example, two wireless signals are orthogonal, meaning: the two wireless signals respectively occupy a positive integer number of RUs (Resource Unit), and there is no RU occupied by both the two wireless signals at the same time. The RU occupies the duration of one OFDM symbol in the time domain and the bandwidth of one subcarrier interval in the frequency domain.

As an embodiment, the K3 first synchronization signals are transmitted on the same carrier.

As an embodiment, the first wireless signal is composed of the first synchronization signal, and the UE performs combining on the received first wireless signal and the K1 first synchronization signals. As a sub-embodiment, the UE performs at least one of { coherent detection, non-coherent detection } on the combined signal. As a sub-embodiment, the UE performs at least one of { coherent detection, non-coherent detection } on the first wireless signal and the K1 first synchronization signals, respectively, and then performs combining on the detection results. As an example, the difference of K minus 1 is greater than or equal to K1.

In the above embodiment, the UE may improve the detection accuracy of the first synchronization signal included in the first wireless signal by performing combination on the first wireless signal and the K1 first synchronization signals.

As an embodiment, any two of the K3 first synchronization signals are QCLs (Quasi Co-Located).

As an embodiment, two wireless signals are the QCL refer to: the large-scale characteristics of a channel carrying one radio signal can be inferred from the large-scale characteristics (properties) of a channel carrying another radio signal. The large scale characteristics include one or more of { delay spread (delay spread), Doppler spread (Doppler spread), Doppler shift (Doppler shift), average gain (average gain), average delay (average delay) }.

-step b1. receiving K2 second synchronization signals.

The time domain resources occupied by the second time frequency resources and the time domain resources occupied by the K2 second synchronization signals are orthogonal, and the time domain resources occupied by any two second synchronization signals in the K2 second synchronization signals are orthogonal. The K2 is a positive integer less than or equal to the K1. For any given one of the K2 second synchronization signals, the time-frequency resource occupied by the given second synchronization signal is a given time-frequency resource, the given time-frequency resource is one of K possible resources, and the position of the given time-frequency resource in the K possible resources is related to the time-domain position of a given reference resource in a time unit. The time-frequency resource occupied by a given first synchronization signal is the given reference resource, and the given first synchronization signal is one of the K1 first synchronization signals.

As an embodiment, the K2 second synchronization signals and the second synchronization signal in the second wireless signal constitute K4 second synchronization signals.

As an embodiment, the K4 second synchronization signals are transmitted on the same carrier.

As an embodiment, the K4 second synchronization signals carry the same information.

As an embodiment, the K4 second synchronization signals are respectively determined by target information bit blocks, and the target information bit blocks comprise positive integer numbers of bits.

As an embodiment, for any two of the K4 second synchronization signals, the UE cannot assume that the two second synchronization signals are transmitted by the same antenna port group, where the antenna port group includes a positive integer number of antenna ports.

As an embodiment, the antenna port group includes 1 antenna port.

As an embodiment, the number of antenna ports included in different antenna port groups may be different.

As an embodiment, the number of antenna ports comprised in different said antenna port groups is the same.

As an embodiment, the UE cannot assume that the two second synchronization signals are transmitted by the same antenna port group, which means that: the small scale characteristics of the wireless channel experienced by the signal transmitted by the first antenna port cannot be used by the UE to infer the small scale characteristics of the wireless channel experienced by the signal transmitted by the second antenna port. The first antenna port is any one antenna port used for transmitting one second synchronization signal, the second antenna port is any one antenna port used for transmitting another second synchronization signal, and the small-scale characteristic includes a channel impulse response.

As an embodiment, the antenna port is formed by superimposing a plurality of antennas through antenna Virtualization (Virtualization), and mapping coefficients of the plurality of antennas to the antenna port form a beamforming vector. The UE cannot assume that the two second synchronization signals are transmitted by the same antenna port group, which means: the beamforming vector corresponding to the first antenna port and the beamforming vector corresponding to the second antenna port cannot be assumed to be the same.

In the above embodiment, any two of the K4 second synchronization signals correspond to different beamforming vectors, and the different beamforming vectors may point to different directions, so as to ensure that the UE can accurately receive the second synchronization signals in any direction.

As an embodiment, the given reference resource is used by the UE to determine the K possible resources.

As an embodiment, the K possible resources are associated with the given reference resource.

As an embodiment, the association relationship of the K possible resources to the given reference resource is the same as the association relationship of the K candidate resources to the first time-frequency resource, respectively.

As an embodiment, the association relationship between the position of the given time-frequency resource in the K possible resources and the time-domain position of the given reference resource in the time unit is the same as the association relationship between the position of the second time-frequency resource in the K candidate resources and the time-domain position of the first time-frequency resource in the time unit, respectively.

As an embodiment, any two of the K4 second synchronization signals are QCLs.

-step a2. receiving first signalling, said first signalling being used for determining said K.

Wherein the first wireless signal and the second wireless signal are transmitted on a first carrier and the first signaling is transmitted on a second carrier.

As an embodiment, the frequency domain resources occupied by the first carrier and the frequency domain resources occupied by the second carrier do not overlap.

As one embodiment, a center frequency of the first carrier is higher than a center frequency of the second carrier. As a sub-embodiment, the center frequency of the first carrier wave is between 0.1GHz and 3.5 GHz. As a sub-embodiment, the center frequency of the second carrier is greater than 10 GHz.

As an embodiment, the bandwidth of the first carrier is wider than the bandwidth of the second carrier.

As an embodiment, the first signaling is cell-specific.

As an embodiment, the first signaling is higher layer signaling.

The invention discloses a method used in a base station of multi-antenna transmission, which comprises the following steps:

-step a. transmitting a first wireless signal on a first time-frequency resource;

-step b. transmitting a second radio signal on a second time-frequency resource;

As an embodiment, the first Synchronization Signal includes at least one of { PSS (Primary Synchronization Signal, Primary first Synchronization Signal), SSS (Secondary Synchronization Signal) }.

As an embodiment, the first synchronization Signal includes at least one of { NB (Narrow Band) -PSS (primary synchronization Signal), NB (Narrow Band) -SSS (secondary synchronization Signal) }.

As an embodiment, the second synchronization signal is transmitted on a broadcast channel (i.e. a downlink channel that can only be used to carry the second synchronization signal). As one embodiment, the Broadcast CHannel includes a PBCH (Physical Broadcast CHannel).

As one embodiment, the time unit is one sub-frame.

According to the above method, the positions of the second wireless signal on the K candidate resources and the time domain position of the first wireless signal in the time unit are associated, so that the receiver of the first wireless signal can determine the time domain position of the first wireless signal in the time unit by determining the positions of the second wireless signal on the K candidate resources, thereby achieving synchronization in the time unit.

-step A0. determining the second time-frequency resource from the first time-frequency resource or determining the K candidate resources from the first time-frequency resource.

-a step B0. of determining the position of the second time-frequency resource among the K candidate resources according to the time-domain position of the first time-frequency resource in a time unit.

And the base station determines the K candidate resources according to the first time-frequency resource.

a step a1. sending K1 first synchronization signals;

As an example, the K3 first synchronization signals carry the same information.

As an example, the orthogonal means not overlapping.

As an example, the difference of K minus 1 is greater than or equal to K1.

step b1. sending K2 second synchronization signals.

As an embodiment, for any two of the K4 second synchronization signals, a receiver of the second wireless signal cannot assume that the two second synchronization signals are transmitted by the same antenna port group, where the antenna port group includes a positive integer number of antenna ports.

As an embodiment, the antenna port group includes 1 antenna port.

As an example, the receiver of the second wireless signal cannot assume that the two second synchronization signals are transmitted by the same antenna port group means that: the small scale characteristics of the wireless channel experienced by the signal transmitted by the first antenna port cannot be used by the receiver of the second wireless signal to infer the small scale characteristics of the wireless channel experienced by the signal transmitted by the second antenna port. The first antenna port is any one antenna port used for transmitting one second synchronization signal, the second antenna port is any one antenna port used for transmitting another second synchronization signal, and the small-scale characteristic includes a channel impulse response.

As an embodiment, the antenna port is formed by superimposing a plurality of antennas through antenna Virtualization (Virtualization), and mapping coefficients of the plurality of antennas to the antenna port form a beamforming vector. The receiver of the second wireless signal cannot assume that the two second synchronization signals are transmitted by the same antenna port group, which means: the beamforming vector corresponding to the first antenna port and the beamforming vector corresponding to the second antenna port cannot be assumed to be the same.

In the above embodiment, any two of the K4 second synchronization signals correspond to different beamforming vectors, and the different beamforming vectors may point in different directions, so as to ensure that a receiver of the second wireless signal can accurately receive the second synchronization signal in any direction.

As an embodiment, the first wireless signal and the second wireless signal are transmitted by a same antenna port group, the antenna port group comprising a positive integer number of antenna ports. As a sub-embodiment, the antenna port corresponding to the first wireless signal and the antenna port corresponding to the second wireless signal have the same beamforming vector.

As an embodiment, the given reference resource is used for determining the K possible resources and the time-domain position of the given reference resource in the time unit is used for determining the position of the given time-frequency resource in the K possible resources.

As an embodiment, the given reference resource is used for determining the given time-frequency resource.

As an embodiment, the given second synchronization signal and the given first synchronization signal are transmitted by the same antenna port group. As a sub-embodiment, the antenna port corresponding to the given second synchronization signal and the antenna port corresponding to the given first synchronization signal have the same beamforming vector.

As an embodiment, any two of the K4 second synchronization signals are QCLs.

-step a2. sending a first signaling, said first signaling being used for determining said K.

As an embodiment, the first signaling is cell-specific.

As an embodiment, the first signaling is higher layer signaling.

The invention discloses user equipment used for multi-antenna transmission, which comprises the following modules:

a first receiving module: for receiving a first wireless signal on a first time-frequency resource;

a second receiving module: for receiving a second wireless signal on a second time-frequency resource;

As an embodiment, the above user equipment is characterized in that the first receiving module is further configured to determine the K candidate resources according to the first time-frequency resource.

As an embodiment, the user equipment is characterized in that the second receiving module is further configured to monitor the second wireless signal on the K candidate resources.

As an embodiment, the user equipment is characterized in that the first receiving module is further configured to receive K1 first synchronization signals. The time domain resources occupied by the first time frequency resources and the time domain resources occupied by the K1 first synchronization signals are orthogonal, and the time domain resources occupied by any two first synchronization signals in the K1 first synchronization signals are orthogonal. The K1 is a positive integer.

As an embodiment, the above user equipment is characterized in that the second receiving module is further configured to receive K2 second synchronization signals, where the second time-frequency resources are orthogonal to the time-domain resources occupied by the K2 second synchronization signals in the time domain, and the time-domain resources occupied by any two second synchronization signals in the K2 second synchronization signals are orthogonal. The K2 is a positive integer less than or equal to the K1. For any given one of the K2 second synchronization signals, the time-frequency resource occupied by the given second synchronization signal is a given time-frequency resource, the given time-frequency resource is one of K possible resources, and the position of the given time-frequency resource in the K possible resources is related to the time-domain position of a given reference resource in a time unit. The time-frequency resource occupied by a given first synchronization signal is the given reference resource, and the given first synchronization signal is one of the K1 first synchronization signals.

The invention discloses a base station device used for multi-antenna transmission, which comprises the following modules:

a first sending module: for transmitting a first wireless signal on a first time-frequency resource;

a second sending module: for transmitting a second wireless signal on a second time-frequency resource;

As an embodiment, the base station device is characterized in that the second sending module is further configured to determine the position of the second time-frequency resource in the K candidate resources according to a time domain position of the first time-frequency resource in a time unit, where the base station determines the K candidate resources according to the first time-frequency resource.

As an embodiment, the base station device is characterized in that the first sending module is further configured to send K1 first synchronization signals. The time domain resources occupied by the first time frequency resources and the time domain resources occupied by the K1 first synchronization signals are orthogonal, and the time domain resources occupied by any two first synchronization signals in the K1 first synchronization signals are orthogonal. The K1 is a positive integer.

As an embodiment, the base station device is characterized in that the second sending module is further configured to send K2 second synchronization signals. The time domain resources occupied by the second time frequency resources and the time domain resources occupied by the K2 second synchronization signals are orthogonal, and the time domain resources occupied by any two second synchronization signals in the K2 second synchronization signals are orthogonal. The K2 is a positive integer less than or equal to the K1. For any given one of the K2 second synchronization signals, the time-frequency resource occupied by the given second synchronization signal is a given time-frequency resource, the given time-frequency resource is one of K possible resources, and the position of the given time-frequency resource in the K possible resources is related to the time-domain position of a given reference resource in a time unit. The time-frequency resource occupied by a given first synchronization signal is the given reference resource, and the given first synchronization signal is one of the K1 first synchronization signals.

As an embodiment, the base station device is characterized in that the first sending module is further configured to send a first signaling, and the first signaling is used to determine K. Wherein the first wireless signal and the second wireless signal are transmitted on a first carrier and the first signaling is transmitted on a second carrier.

As an embodiment, the base station device is characterized in that the first sending module is further configured to determine the second time-frequency resource according to the first time-frequency resource.

As an embodiment, the base station device is characterized in that the first sending module is further configured to determine the K candidate resources according to the first time-frequency resource, and the second sending module is further configured to determine a position of the second time-frequency resource in the K candidate resources according to a time-domain position of the first time-frequency resource in a time unit.

Compared with the traditional scheme, the invention has the following advantages:

-enabling the UE to determine the time domain location of the first time-frequency resource in the time unit based on the location of the second time-frequency resource in the K candidate resources by establishing a relationship between the location of the second time-frequency resource in the K candidate resources and the time domain location of the first time-frequency resource in the time unit, thereby achieving synchronization of the UE in the time unit.

The K3 first synchronization signals may be sent by different antenna port groups through different beamforming vectors on different time domain resources, so that the UE in different directions can accurately receive the first synchronization signals.

The K4 second synchronization signals may be sent by different antenna port groups through different beamforming vectors on different time domain resources, so that the UE in different directions can accurately receive the second synchronization signals.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:

fig. 1 shows a flow diagram of wireless transmission according to an embodiment of the invention;

fig. 2 shows a schematic diagram of an association between a first radio resource and K candidate resources, and an association between a time domain position of the first radio resource and a position of a second radio resource in the K candidate resources in a time unit, according to an embodiment of the invention;

fig. 3 shows a schematic diagram of an association between a first radio resource and K candidate resources, and an association between a time domain position of the first radio resource and a position of a second radio resource in the K candidate resources in a time unit, according to another embodiment of the present invention;

fig. 4 shows a schematic diagram of time-frequency resources occupied by a first synchronization signal and time-frequency resources possibly occupied by a second synchronization signal according to an embodiment of the invention;

fig. 5 shows a block diagram of a processing device used in a UE according to an embodiment of the invention;

fig. 6 shows a block diagram of a processing device for use in a base station according to an embodiment of the invention;

Detailed Description

The technical solutions of the present invention will be further described in detail with reference to the accompanying drawings, and it should be noted that the features of the embodiments and examples of the present application may be arbitrarily combined with each other without conflict.

Example 1

Embodiment 1 illustrates a flow chart of wireless transmission, as shown in fig. 1. In fig. 1, base station N1 is the serving cell maintenance base station for UE U2. In fig. 1, the step in block F1 is optional.

For N1, sending a first signaling in step S101, the first signaling being used to determine K, the K being a positive integer greater than 1; in step S11, { first wireless signals, K1 first synchronization signals }; in step S12, { second wireless signals, K2 second synchronization signals }.

For U2, receiving a first signaling in step S201, the first signaling being used to determine K, the K being a positive integer greater than 1; receiving at least the former of { first wireless signals, K1 first synchronization signals } in step S21; at least the former of { second wireless signals, K2 second synchronization signals } is received in step S22.

In embodiment 1, the time-frequency resource corresponding to the first radio signal is a first time-frequency resource, the time-frequency resource corresponding to the second radio signal is a second time-frequency resource, the second time-frequency resource is one of K candidate resources, and a position of the second time-frequency resource in the K candidate resources is related to a time-domain position of the first time-frequency resource in a time unit. The first wireless signal comprises a first synchronization signal and the second wireless signal comprises a second synchronization signal. The K is a positive integer greater than 1, and the first signaling is used to determine the K. Wherein the first wireless signal and the second wireless signal are transmitted on a first carrier. The first signaling is transmitted on a second carrier. The first time-frequency resources are orthogonal to the time-domain resources occupied by the K1 first synchronization signals in the time domain, and the time-domain resources occupied by any two first synchronization signals in the K1 first synchronization signals are orthogonal. The K1 is a positive integer. The time domain resources occupied by the second time frequency resources and the time domain resources occupied by the K2 second synchronization signals are orthogonal, and the time domain resources occupied by any two second synchronization signals in the K2 second synchronization signals are orthogonal. The K2 is a positive integer less than or equal to the K1. The first synchronization signal and the K1 first synchronization signals in the first wireless signal constitute K3 first synchronization signals, the K3 first synchronization signals are consecutive in a time domain, and the K3 is the K1 plus 1. The K2 second synchronization signals and a second synchronization signal in the second wireless signal constitute K4 second synchronization signals, the K4 being the K2 plus 1.

As sub-embodiment 1 of embodiment 1, the first synchronization signal includes at least one of { Zadoff-Chu sequence, pseudo-random sequence }.

As sub-embodiment 2 of embodiment 1, the first wireless signal and the second wireless signal are transmitted by the same antenna port group, which includes a positive integer number of antenna ports.

As sub-embodiment 3 of embodiment 1, the first synchronization signal includes at least one of { PSS, SSS }.

As sub-embodiment 4 of embodiment 1, the K3 first synchronization signals carry the same information, the K3 first synchronization signals correspond to the same synchronization sequence, and the K3 first synchronization signals are transmitted on the same carrier.

As sub-embodiment 5 of embodiment 1, the U2 receives only the former one of { first wireless signal, K1 first synchronization signals }.

As sub-embodiment 6 of embodiment 1, the U2 receives at least one of the K1 first synchronization signals and the first wireless signal.

As a sub-embodiment of sub-embodiment 6 of embodiment 1, the U2 performs combining of the first wireless signal and at least one of the K1 received first synchronization signals, and performs at least one of { coherent detection, non-coherent detection } on the combined signal.

As a sub-embodiment of sub-embodiment 6 of embodiment 1, the U2 performs at least one of { coherent detection, incoherent detection } on at least one of the K1 first synchronization signals and the first wireless signal, respectively, and then performs combining on the detection results.

As sub-embodiment 7 of embodiment 1, any two of the K3 first synchronization signals are QCLs.

As sub-embodiment 8 of embodiment 1, the U2 monitors the second wireless signal on the K candidate resources.

As a sub-embodiment of sub-embodiment 8 of embodiment 1, the monitoring refers to blind decoding, that is, a decoding operation is performed on the received signal in each of the candidate resources, and if the decoding is determined to be correct according to the check bits, correct reception is determined, otherwise, erroneous reception is determined.

As sub-embodiment 9 of embodiment 1, the K4 second synchronization signals are transmitted on the same carrier.

As sub-embodiment 10 of embodiment 1, the K4 second synchronization signals carry the same information.

As sub-embodiment 11 of embodiment 1, the K4 second synchronization signals are respectively determined by target blocks of information bits, the target blocks of information bits comprising a positive integer number of bits.

As sub-embodiment 12 of embodiment 1, for any two second synchronization signals among the K4 second synchronization signals, the U2 cannot assume that the two second synchronization signals are transmitted by the same antenna port group, and the antenna port group includes a positive integer number of antenna ports.

As sub-embodiment 13 of embodiment 1, any two of the K4 second synchronization signals are QCLs.

As a sub-embodiment 14 of embodiment 1, the first signaling is cell-specific.

As sub-embodiment 15 of embodiment 1, the first signaling is higher layer signaling.

Example 2

Embodiment 2 illustrates a schematic diagram of an association between the first radio resource and the K candidate resources, and a schematic diagram of an association between a time domain position of the first radio resource in the time unit and a position of the second radio resource in the K candidate resources, as shown in fig. 2.

In fig. 2, the K3 first synchronization signals are consecutive in time, and the starting point of the K3 first synchronization signals in time is the starting point of the time cell. The time-frequency resource occupied by the first wireless signal is the first wireless resource. The positions of the K candidate resources in the time domain are the same, and the positions of the K candidate resources in the time domain are associated with the position of the first time-frequency resource in the time domain. The frequency domain resources occupied by the K candidate resources are mutually orthogonal. The second radio resource is one of the K candidate resources. The location of the second radio resource in the K candidate resources is associated with a time domain location of the first radio resource over the time cell.

As sub-embodiment 1 of embodiment 2, the time unit is one sub-frame (sub-frame).

As sub-embodiment 2 of embodiment 2, the time unit is Q consecutive sub-frames, where Q is a positive integer.

As sub-embodiment 3 of embodiment 2, the time unit is 1ms, wherein the start time of the time unit and the sub-frame are not synchronized.

As a sub-embodiment 4 of embodiment 2, Q1 time elements are separated between the time domain resource occupied by the K candidate resources and the time domain resource occupied by the first wireless resource, the Q1 being an integer greater than or den with respect to zero.

As a sub-embodiment of sub-embodiment 4 of embodiment 2, the Q1 is static.

As a sub-embodiment of sub-embodiment 4 of embodiment 2, the Q1 is semi-static.

As a sub-embodiment of sub-embodiment 4 of embodiment 2, the time element comprises P OFDM symbols, wherein P is a positive integer.

As a sub-embodiment 5 of embodiment 2, an RU (Resource Unit) occupied by the candidate Resource is continuous in the frequency domain. The RU occupies the duration of one OFDM symbol in the time domain and the bandwidth of one subcarrier interval in the frequency domain.

As a sub-example of sub-example 5 of example 2, the RU is RE (Resource Element).

As sub-embodiment 6 of embodiment 2, the RU occupied by the K candidate resources is discontinuous in the frequency domain.

As a sub-embodiment of sub-embodiment 6 of embodiment 2, the frequency domain spacing between adjacent RUs occupied by the candidate resource is the same.

As a sub-embodiment 7 of embodiment 2, a time domain position occupied by the first radio resource is an i-th signal length within the time unit, and a time domain resource occupied by one of the first synchronization signals in a time domain is one of the signal lengths. The second radio resource is an ith one of the K candidate resources.

As a sub-embodiment of sub-embodiment 7 of embodiment 2, one said signal length is Q2 time elements, wherein said Q2 is a positive integer.

As a sub-embodiment 8 of the embodiment 2, for any given one of the K2 second synchronization signals, the time-frequency resource occupied by the given second synchronization signal is a given time-frequency resource, the given time-frequency resource is one of K possible resources, and the position of the given time-frequency resource in the K possible resources is related to the time-domain position of a given reference resource in a time unit. The time-frequency resource occupied by a given first synchronization signal is the given reference resource, and the given first synchronization signal is one of the K1 first synchronization signals.

As a sub-embodiment of sub-embodiment 8 of embodiment 2, the given reference resource is used by the UE to determine the K possible resources.

As a sub-embodiment of sub-embodiment 8 of embodiment 2, the K possible resources are associated with the given reference resource.

As a sub-embodiment of sub-embodiment 8 of embodiment 2, the association relationship of the K possible resources to the given reference resource is the same as the association relationship of the K candidate resources to the first time-frequency resource, respectively.

As a sub-embodiment of the sub-embodiment 8 of embodiment 2, the association relationship between the position of the given time-frequency resource in the K possible resources and the time-domain position of the given reference resource in the time unit is the same as the association relationship between the position of the second time-frequency resource in the K candidate resources and the time-domain position of the first time-frequency resource in the time unit.

Example 3

Embodiment 3 illustrates a schematic diagram of an association between the first radio resource and the K candidate resources, and a schematic diagram of an association between a time domain position of the first radio resource in the time unit and a position of the second radio resource in the K candidate resources, as shown in fig. 3. In fig. 3, the K3 first synchronization signals are consecutive in time, and the starting point of the K3 first synchronization signals in time is the starting point of the time cell. The time-frequency resource occupied by the first wireless signal is the first wireless resource. The positions of the K candidate resources on the frequency domain are the same, and the time domain resources occupied by the K candidate resources are mutually orthogonal. The second radio resource is one of the K candidate resources. The location of the second radio resource in the K candidate resources is associated with a time domain location of the first radio resource over the time cell.

As sub-embodiment 1 of embodiment 3, the time unit is one sub-frame (sub-frame).

As sub-embodiment 2 of embodiment 3, the time unit is Q consecutive subframes, where Q is a positive integer.

As a sub-embodiment 3 of embodiment 3, the time unit is 1ms, wherein the start time of the time unit and the sub-frame are not synchronized.

As a sub-embodiment 4 of embodiment 3, the frequency domain resources occupied by the K candidate resources and the frequency domain resources occupied by the first radio resources are the same.

As sub-embodiment 5 of embodiment 3, Q1+ f (i) time elements are separated between the time domain resource occupied by the ith candidate resource and the time domain resource occupied by the first radio resource in the K candidate resources, and Q1 is an integer greater than or equal to zero.

As a sub-embodiment of sub-embodiment 5 of embodiment 3, the time element comprises P OFDM symbols, wherein P is a positive integer.

As a sub-embodiment of sub-embodiment 5 of embodiment 3, for i ≠ j, said f (i) ≠ f (j).

As a sub-embodiment of sub-embodiment 5 of embodiment 3, the Q1 is fixed.

As a sub-embodiment of sub-embodiment 5 of embodiment 3, the Q1 is semi-static or configurable.

As a sub-embodiment of sub-embodiment 5 of embodiment 3, the correspondence between f (i) and i is fixed or predefined.

As a sub-embodiment of sub-embodiment 5 of embodiment 3, the correspondence between f (i) and i is semi-static or configurable.

As a sub-example of sub-example 5 of example 3, the K ═ K3, the f (i) 2(K-i) +1, where i is taken from 1 to K3.

As a sub-embodiment 6 of embodiment 3, a time domain position occupied by the first radio resource is an i-th signal length within the time unit, and a time domain resource occupied by one of the first synchronization signals in a time domain is one of the signal lengths. The second radio resource is an ith one of the K candidate resources.

As a sub-embodiment of sub-embodiment 6 of embodiment 3, one said signal length is Q2 time elements, wherein said Q2 is a positive integer.

As sub-embodiment 7 of embodiment 3, for any given one of the K2 second synchronization signals, the time-frequency resource occupied by the given second synchronization signal is a given time-frequency resource, the given time-frequency resource is one of K possible resources, and the position of the given time-frequency resource in the K possible resources is related to the time-domain position of a given reference resource in a time unit. The time-frequency resource occupied by a given first synchronization signal is the given reference resource, and the given first synchronization signal is one of the K1 first synchronization signals.

As a sub-embodiment of sub-embodiment 7 of embodiment 3, the given reference resource is used by the UE to determine the K possible resources.

As a sub-embodiment of sub-embodiment 7 of embodiment 3, the K possible resources are associated with the given reference resource.

As a sub-embodiment of sub-embodiment 7 of embodiment 3, the association relationship of the K possible resources to the given reference resource is the same as the association relationship of the K candidate resources to the first time-frequency resource, respectively.

As a sub-embodiment of the sub-embodiment 7 of the embodiment 3, the association relationship between the position of the given time-frequency resource in the K possible resources and the time-domain position of the given reference resource in the time unit is respectively the same as the association relationship between the position of the second time-frequency resource in the K candidate resources and the time-domain position of the first time-frequency resource in the time unit.

Example 4

Embodiment 4 illustrates a schematic diagram of time-frequency resources occupied by a first synchronization signal and time-frequency resources possibly occupied by a second synchronization signal, as shown in fig. 4. In fig. 4, the squares filled with oblique lines correspond to the time-frequency resources occupied by the first synchronization signals, where the squares identified by the

numbers

1, 2, …, and K3 are occupied by the K3 first synchronization signals respectively. The squares filled with crossing lines correspond to time frequency resources that may be occupied by the second synchronization signal.

As sub-embodiment 1 of embodiment 4, the first time-frequency resources in the present invention are shown as small squares filled with diagonal lines marked by number K, and the K candidate resources in the present invention are shown as small squares filled with cross lines marked by { K _1, K _2, …, K _ K }, respectively. Where K is one element of {1, 2, …, K3 }.

As sub-embodiment 2 of embodiment 4, the first time-frequency resources in the present invention are shown as small squares filled with diagonal lines marked by number K, and the K candidate resources in the present invention are shown as small squares filled with cross lines marked by {1_ K, 2_ K, …, K _ K }, respectively. Where K is any one element of {1, 2, …, K3 }.

As sub-example 3 of example 4, the K3 is equal to the K.

As sub-example 3 of example 4, the K3 is not greater than the K.

Example 5

Embodiment 5 is a block diagram of a processing apparatus used in a UE, as shown in fig. 5. In fig. 5, the UE apparatus 200 is mainly composed of a first receiving module 201 and a second receiving module 202.

The first receiving module 201 is configured to receive at least the former of { the first wireless signal, K1 first synchronization signals }; the second receiving module 202 is configured to receive at least the former one of { the second wireless signals, K2 second synchronization signals }.

In embodiment 5, the time-frequency resource corresponding to the first radio signal is a first time-frequency resource, the time-frequency resource corresponding to the second radio signal is a second time-frequency resource, the second time-frequency resource is one of K candidate resources, and a position of the second time-frequency resource in the K candidate resources is related to a time-domain position of the first time-frequency resource in a time unit. The first wireless signal comprises a first synchronization signal and the second wireless signal comprises a second synchronization signal. The K is a positive integer greater than 1.

As a sub-embodiment of embodiment 5, the first wireless signal includes at least one of { a first synchronization sequence, a second synchronization sequence }, and the second wireless signal includes a PBCH.

As a sub-embodiment of embodiment 5, the first wireless signal includes a first synchronization sequence and the second wireless signal includes a second synchronization sequence. The first time-frequency resources are orthogonal to the time-domain resources occupied by the K1 first synchronization signals in the time domain, and the time-domain resources occupied by any two first synchronization signals in the K1 first synchronization signals are orthogonal. The K1 is a positive integer.

As a sub-embodiment of embodiment 5, the time domain resources of the second time-frequency resources are orthogonal to the time domain resources occupied by the K2 second synchronization signals, and the time domain resources occupied by any two second synchronization signals of the K2 second synchronization signals are orthogonal. The K2 is a positive integer less than or equal to the K1.

As a sub-embodiment of embodiment 5, the first receiving module 201 is further configured to receive a first signaling, and the first signaling is used to determine K. Wherein the first wireless signal and the second wireless signal are transmitted on a first carrier. The first signaling is transmitted on a second carrier.

Example 6

Embodiment 6 is a block diagram of a processing apparatus used in a base station, as shown in fig. 6. In fig. 6, the base station apparatus 300 is mainly composed of a first transmission module 301 and a second transmission module 302.

The first sending module 301 is configured to send { a first wireless signal, K1 first synchronization signals }; the second sending module 302 is configured to send { the second wireless signal, K2 second synchronization signals }.

In embodiment 6, the time-frequency resource corresponding to the first radio signal is a first time-frequency resource, the time-frequency resource corresponding to the second radio signal is a second time-frequency resource, the second time-frequency resource is one of K candidate resources, and a position of the second time-frequency resource in the K candidate resources is related to a time-domain position of the first time-frequency resource in a time unit. The first wireless signal comprises a first synchronization signal and the second wireless signal comprises a second synchronization signal. The K is a positive integer greater than 1.

As a sub-embodiment of embodiment 6, the time-domain resources occupied by the first time-frequency resources and the time-domain resources occupied by the K1 first synchronization signals are orthogonal, and the time-domain resources occupied by any two first synchronization signals in the K1 first synchronization signals are orthogonal. The K1 is a positive integer.

As a sub-embodiment of embodiment 6, the time domain resources of the second time-frequency resources are orthogonal to the time domain resources occupied by the K2 second synchronization signals, and the time domain resources occupied by any two second synchronization signals of the K2 second synchronization signals are orthogonal. The K2 is a positive integer less than or equal to the K1.

As a sub-embodiment of embodiment 6, the first sending module is further configured to send a first signaling, and the first signaling is used to determine K. Wherein the first wireless signal and the second wireless signal are transmitted on a first carrier. The first signaling is transmitted on a second carrier.

As a sub-embodiment of embodiment 6, the first wireless signal includes a first synchronization sequence and the second wireless signal includes a second synchronization sequence.

As a sub-embodiment of embodiment 6, the first wireless signal includes at least one of { first synchronization sequence, second synchronization sequence }, and the second wireless signal includes at least the former of { MIB, SIB }.

As a sub-embodiment of embodiment 6, the first sending module 301 is further configured to determine the second time-frequency resource according to the first time-frequency resource.

As a sub-embodiment of embodiment 6, the first sending module 301 is further configured to determine the K candidate resources according to the first time-frequency resource, and the second sending module 302 is further configured to determine a position of the second time-frequency resource in the K candidate resources according to a time-domain position of the first time-frequency resource in a time unit.

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. The UE or the terminal in the invention includes but is not limited to wireless communication equipment such as a mobile phone, a tablet computer, a notebook, a network card, an NB-IOT terminal, an eMTC terminal and the like. The base station or system device in the present invention includes but is not limited to a macro cell base station, a micro cell base station, a home base station, a relay base station, and other wireless communication devices.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method in a UE supporting synchronization signals, comprising the steps of:

-a. receiving a first wireless signal on a first time-frequency resource;

-step b. receiving a second radio signal on a second time-frequency resource;

wherein the second time-frequency resource is one of K candidate resources, and the position of the second time-frequency resource in the K candidate resources is related to the time domain position of the first time-frequency resource in a time unit; the first wireless signal comprises a first synchronization signal and the second wireless signal comprises a second synchronization signal; k is a positive integer greater than 1; the positions of the K candidate resources in the frequency domain are the same, the positions of the K candidate resources in the time domain are different, and the positions of the K candidate resources in the time domain are associated with the position of the first time-frequency resource in the time domain;

the step A also comprises the following steps:

a1, receiving K1 first synchronous signals;

the time domain resources occupied by the first time frequency resources and the time domain resources occupied by the K1 first synchronization signals are orthogonal in the time domain, and the time domain resources occupied by any two first synchronization signals in the K1 first synchronization signals are orthogonal; the K1 is a positive integer; the K1 first synchronization signals correspond to the same synchronization sequence as the first synchronization signals, and the K1 first synchronization signals and the first synchronization signals are transmitted on the same carrier wave.

2. The method of claim 1, wherein step a further comprises the steps of:

-step A0. determining the K candidate resources from the first time-frequency resource;

or, the step B further includes the steps of:

-step B0. monitoring the second wireless signal over the K candidate resources.

3. The method of claim 1, wherein the first synchronization signal comprises at least the former of a PSS and a SSS, and wherein the second synchronization signal is transmitted on a PBCH; the time unit is Q consecutive subframes, where Q is a positive integer; the first wireless signal and the second wireless signal are transmitted by a same antenna port group, which includes a positive integer number of antenna ports.

4. The method according to any one of claims 1 to 3, wherein said step B further comprises the steps of:

-a step b1. receiving K2 second synchronization signals;

the time domain resources occupied by the second time frequency resources and the time domain resources occupied by the K2 second synchronization signals are orthogonal, and the time domain resources occupied by any two second synchronization signals in the K2 second synchronization signals are orthogonal; the K2 is equal to the K1; for any given one of the K2 second synchronization signals, the time-frequency resource occupied by the given second synchronization signal is a given time-frequency resource, the given time-frequency resource is one of K possible resources, and the position of the given time-frequency resource in the K possible resources is related to the time-domain position of a given reference resource in a time unit; the time-frequency resource occupied by a given first synchronization signal is the given reference resource, and the given first synchronization signal is one of the K1 first synchronization signals.

5. The method of claim 4, wherein for any two of the K2 second synchronization signals and the second synchronization signals of the second wireless signals, the small scale characteristic of the wireless channel experienced by one of the second synchronization signals cannot be used to infer the small scale characteristic of the wireless channel experienced by another one of the second synchronization signals.

6. The method according to claim 4, wherein for any given one of the K2 second synchronization signals, the time-frequency resource occupied by the given second synchronization signal is a given time-frequency resource, the given time-frequency resource is one of K possible resources, and the position of the given time-frequency resource in the K possible resources is related to the time-domain position of a given reference resource in a time unit; the time frequency resource occupied by a given first synchronization signal is the given reference resource, and the given first synchronization signal is one of the K1 first synchronization signals; the association of the position of the given time-frequency resource in the K possible resources to the time-domain position of the given reference resource in the time unit is the same as the association of the position of the second time-frequency resource in the K candidate resources to the time-domain position of the first time-frequency resource in the time unit.

7. The method according to claim 5, wherein for any given one of the K2 second synchronization signals, the time-frequency resource occupied by the given second synchronization signal is a given time-frequency resource, the given time-frequency resource is one of K possible resources, and the position of the given time-frequency resource in the K possible resources is related to the time-domain position of a given reference resource in a time unit; the time frequency resource occupied by a given first synchronization signal is the given reference resource, and the given first synchronization signal is one of the K1 first synchronization signals; the association of the position of the given time-frequency resource in the K possible resources to the time-domain position of the given reference resource in the time unit is the same as the association of the position of the second time-frequency resource in the K candidate resources to the time-domain position of the first time-frequency resource in the time unit.

8. The method according to any one of claims 1 to 3, wherein the step A further comprises the steps of:

-a step a2. receiving a first signaling, the first signaling being used for determining the K;

9. A method in a base station supporting synchronization signals, comprising the steps of:

the step A also comprises the following steps:

a1, sending K1 first synchronization signals;

10. The method of claim 9, wherein step a further comprises the steps of:

-step A0. determining the second time-frequency resource from the first time-frequency resource or the K candidate resources from the first time-frequency resource;

or, the step B further includes the steps of:

-a step B0. of determining the position of the second time-frequency resource among the K candidate resources according to the time-domain position of the first time-frequency resource in a time unit;

11. The method of claim 9, wherein the first synchronization signal comprises at least the former of a PSS and a SSS, and wherein the second synchronization signal is transmitted on a PBCH; the time unit is Q consecutive subframes, where Q is a positive integer; the first wireless signal and the second wireless signal are transmitted by a same antenna port group, which includes a positive integer number of antenna ports.

12. The method according to any one of claims 9 to 11, wherein said step B further comprises the steps of:

-step b1. sending K2 second synchronization signals;

13. The method of claim 12, wherein for any two of the K2 second synchronization signals and the second synchronization signals of the second wireless signals, the small scale characteristic of the wireless channel experienced by one of the second synchronization signals cannot be used to infer the small scale characteristic of the wireless channel experienced by another one of the second synchronization signals.

14. The method according to claim 12, wherein for any given one of the K2 second synchronization signals, the time-frequency resource occupied by the given second synchronization signal is a given time-frequency resource, the given time-frequency resource is one of K possible resources, and the position of the given time-frequency resource in the K possible resources is related to the time-domain position of a given reference resource in a time unit; the time frequency resource occupied by a given first synchronization signal is the given reference resource, and the given first synchronization signal is one of the K1 first synchronization signals; the association of the position of the given time-frequency resource in the K possible resources to the time-domain position of the given reference resource in the time unit is the same as the association of the position of the second time-frequency resource in the K candidate resources to the time-domain position of the first time-frequency resource in the time unit.

15. The method according to claim 13, wherein for any given one of the K2 second synchronization signals, the time-frequency resource occupied by the given second synchronization signal is a given time-frequency resource, the given time-frequency resource is one of K possible resources, and the position of the given time-frequency resource in the K possible resources is related to the time-domain position of a given reference resource in a time unit; the time frequency resource occupied by a given first synchronization signal is the given reference resource, and the given first synchronization signal is one of the K1 first synchronization signals; the association of the position of the given time-frequency resource in the K possible resources to the time-domain position of the given reference resource in the time unit is the same as the association of the position of the second time-frequency resource in the K candidate resources to the time-domain position of the first time-frequency resource in the time unit.

16. The method according to any one of claims 9 to 11, wherein said step a further comprises the steps of:

-a step a2. sending a first signaling, said first signaling being used for determining said K;

17. A user equipment supporting synchronization signals, comprising:

the first receiving module receives K1 first synchronization signals;

18. The UE of claim 17, wherein the first receiving module determines the K candidate resources according to the first time/frequency resource, or wherein the second receiving module monitors the K candidate resources for the second wireless signal.

19. The user equipment of claim 17, wherein the first synchronization signal comprises at least the former of a PSS and a SSS, and wherein the second synchronization signal is transmitted on a PBCH; the time unit is Q consecutive subframes, where Q is a positive integer; the first wireless signal and the second wireless signal are transmitted by a same antenna port group, which includes a positive integer number of antenna ports.

20. The ue according to any of claims 17-19, wherein the second receiving module receives K2 second synchronization signals;

21. The UE of claim 20, wherein for any two of the K2 second synchronization signals and the second synchronization signals of the second wireless signals, the small scale characteristic of the wireless channel experienced by one of the second synchronization signals cannot be used to infer the small scale characteristic of the wireless channel experienced by another one of the second synchronization signals.

22. The ue of claim 20, wherein for any given one of the K2 second synchronization signals, the time-frequency resource occupied by the given second synchronization signal is a given time-frequency resource, and the given time-frequency resource is one of K possible resources, and a position of the given time-frequency resource in the K possible resources is related to a time-domain position of a given reference resource in a time unit; the time frequency resource occupied by a given first synchronization signal is the given reference resource, and the given first synchronization signal is one of the K1 first synchronization signals; the association of the position of the given time-frequency resource in the K possible resources to the time-domain position of the given reference resource in the time unit is the same as the association of the position of the second time-frequency resource in the K candidate resources to the time-domain position of the first time-frequency resource in the time unit.

23. The ue according to claim 21, wherein for any given one of the K2 second synchronization signals, the time-frequency resource occupied by the given second synchronization signal is a given time-frequency resource, the given time-frequency resource is one of K possible resources, and the position of the given time-frequency resource in the K possible resources is related to the time-domain position of a given reference resource in a time unit; the time frequency resource occupied by a given first synchronization signal is the given reference resource, and the given first synchronization signal is one of the K1 first synchronization signals; the association of the position of the given time-frequency resource in the K possible resources to the time-domain position of the given reference resource in the time unit is the same as the association of the position of the second time-frequency resource in the K candidate resources to the time-domain position of the first time-frequency resource in the time unit.

24. The UE of any one of claims 17 to 19, wherein the first receiving module receives first signaling, the first signaling being used to determine the K;

25. A base station device supporting a synchronization signal, comprising:

the first sending module sends K1 first synchronization signals;

26. The base station device according to claim 25, wherein the first sending module determines the second time-frequency resource according to the first time-frequency resource, or determines the K candidate resources according to the first time-frequency resource;

or, the second sending module determines the position of the second time-frequency resource in the K candidate resources according to the time domain position of the first time-frequency resource in a time unit;

27. The base station apparatus of claim 25, wherein the first synchronization signal comprises at least the former of a PSS and a SSS, and wherein the second synchronization signal is transmitted on a PBCH; the time unit is Q consecutive subframes, where Q is a positive integer; the first wireless signal and the second wireless signal are transmitted by a same antenna port group, which includes a positive integer number of antenna ports.

28. The base station device according to any of claims 25 to 27, wherein said first transmitting module transmits K2 second synchronization signals;

29. The base station device of claim 28, wherein for any two of the K2 second synchronization signals and the second synchronization signals of the second wireless signals, the small scale characteristic of the wireless channel experienced by one of the second synchronization signals cannot be used to infer the small scale characteristic of the wireless channel experienced by another one of the second synchronization signals.

30. The base station device according to claim 28, wherein for any given one of the K2 second synchronization signals, the time-frequency resource occupied by the given second synchronization signal is a given time-frequency resource, the given time-frequency resource is one of K possible resources, and the position of the given time-frequency resource in the K possible resources is related to the time-domain position of a given reference resource in a time unit; the time frequency resource occupied by a given first synchronization signal is the given reference resource, and the given first synchronization signal is one of the K1 first synchronization signals; the association of the position of the given time-frequency resource in the K possible resources to the time-domain position of the given reference resource in the time unit is the same as the association of the position of the second time-frequency resource in the K candidate resources to the time-domain position of the first time-frequency resource in the time unit.

31. The base station device according to claim 29, wherein for any given one of the K2 second synchronization signals, the time-frequency resource occupied by the given second synchronization signal is a given time-frequency resource, the given time-frequency resource is one of K possible resources, and the position of the given time-frequency resource in the K possible resources is related to the time-domain position of a given reference resource in a time unit; the time frequency resource occupied by a given first synchronization signal is the given reference resource, and the given first synchronization signal is one of the K1 first synchronization signals; the association of the position of the given time-frequency resource in the K possible resources to the time-domain position of the given reference resource in the time unit is the same as the association of the position of the second time-frequency resource in the K candidate resources to the time-domain position of the first time-frequency resource in the time unit.

32. The base station device according to any of claims 25 to 27, wherein said first transmitting module transmits first signaling, said first signaling being used for determining said K;