WO2018006741A1

WO2018006741A1 - Signal transmission method and apparatus

Info

Publication number: WO2018006741A1
Application number: PCT/CN2017/090559
Authority: WO
Inventors: 刘瑾; 欧凯文·卡·勤; 葛士斌; 蒋鹏
Original assignee: 华为技术有限公司
Priority date: 2016-07-07
Filing date: 2017-06-28
Publication date: 2018-01-11
Also published as: CN107592668A; CN107592668B

Abstract

Disclosed in embodiments of the present application are a signal transmission method and apparatus. The method comprises: generating a first signal, the first signal comprising N signal sequences, at least two of the N signal sequences being different, N being a positive integer greater than or equal to 2, and the first signal being used for performing time synchronization by a terminal device only according to the first signal; and sending the first signal. The signal transmission method and apparatus in the embodiments of the present application can reduce resource overheads.

Description

Method and apparatus for transmitting signals

The present application claims priority to Chinese Patent Application No. Serial No. No. No. No. No. No. No. No. No. No. No. No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No

Technical field

Embodiments of the present application relate to the field of communications, and, more particularly, to a method and apparatus for transmitting signals.

Background technique

Long Term Evolution (LTE), as the third generation of the 3rd Generation Partnership Project (3GPP) organization, has adopted a variety of communication systems for the fourth generation (Fourth Generation, 4G) communication system. New technologies, such as Orthogonal Frequency Division Multiplexing (OFDM), Multiple Input Multiple Output (MIMO), and link adaptation, are designed to increase data transmission rates and reduce system delay. Increase system capacity and coverage, as well as reduce operating costs.

Cell search and synchronization is a very critical step in the LTE system, which is the premise that the terminal establishes a communication link with the base station. Whether the terminal is initially powered on in the serving cell or performing cell handover in the communication process, it is necessary to establish a connection with the base station through a cell search and synchronization process. The cell search process is mainly for the terminal and the cell to obtain time synchronization and frequency synchronization, and at the same time obtain the cell identity (identity, ID), system bandwidth and other cell broadcast information.

Before the LTE terminal can communicate with the LTE network, it is first necessary to find and synchronize with the cells in the network, and secondly, to receive and decode the information necessary for communication with the cell and normal operation, the subsequent random access procedure can be implemented. Enter the cell. And in order to support mobility, the terminal also needs to constantly search for neighbor cell signals and evaluate the signal quality to determine whether handover needs to be performed. The success of cell search, synchronization, and handover directly determines the user's perception. The success rate and reliability are important considerations for the mobility management performance of the LTE system.

In the field of wireless communications, high-density networks based on densely deployed network Transmit Reception Points (TRPs) and nearby communications are receiving increasing attention. Network densification causes the terminal to be under multiple TRP coverage, which makes the access, synchronization and handover process of the terminal very complicated. The resource overhead of the existing terminal and TRP access, synchronization, and handover scheme is large. For dense network structures and demanding system performance requirements, transparent TRP services need to be dynamically provided for each terminal. The existing terminal and fixed service TRP connection methods cannot meet the requirements. Therefore, in order to truly implement the terminal-centric experience, user-centric User Centric No Cell Radio Access (UCNC) technology is required, that is, the terminal is no longer connected to a fixed physical TRP. A logical entity that includes a set of TRPs is accessed to obtain a service. Such a logical entity may be referred to as a hypercell. The boundaries of the Hypercell are flexible and can vary depending on network load and user distribution. All the TRPs in the Hypercell are transparent to the terminal. The terminal only needs to access the Hypercell ID to obtain the TRP service in the Hypercell, and no longer connect to a TRP.

For high-density networks, if the existing cell search and synchronization scheme is adopted, the cell search and synchronization of the terminal will become very complicated, and each calculation and selection requires corresponding signaling overhead, which cannot meet the performance under high-density network. Claim.

Therefore, reducing resource overhead becomes a technical problem that needs to be solved in a high-density network.

Application content

The embodiment of the present application provides a method and an apparatus for transmitting a signal, which can reduce resource overhead.

In a first aspect, a method of transmitting a signal is provided, comprising:

Generating a first signal, wherein the first signal comprises N signal sequences, at least two of the N signal sequences are different, and N is a positive integer greater than or equal to 2, and the first signal is used by the terminal device only Performing time synchronization according to the first signal;

The first signal is sent.

In the embodiment of the present application, at least two of the plurality of signal sequences included in the first signal are different, different from the existing PSS using the same signal sequence, so that the terminal device can detect different ones of the first signal. The signal sequence implements time synchronization. That is to say, after the first signal of the embodiment of the present application is used, synchronization can be realized with only one signal. Therefore, the embodiment of the present application can simplify the synchronization process, thereby reducing resource overhead.

In some possible implementations, the N signal sequences are transmitted in different N time units, and the different N time units are separated by one or more predetermined offset values.

In some possible implementations, N is 2, and the N signal sequences are a first signal sequence and a second signal sequence, and the first signal sequence and the second signal sequence are conjugate to each other.

In the case where the first signal uses two signal sequences conjugated to each other, the receiver is relatively simple, and only needs to correlate the received signals with a known sequence to detect, without using two known sequences respectively. The received signal is correlated to detect.

In some possible implementations, sending the first signal includes:

The first signal sequence is transmitted in a first time unit, and the second signal sequence is transmitted in a second time unit, the first time unit being spaced apart from the second time unit by one or more predetermined offset values.

In some possible implementation manners, the first time unit is a first subframe of the radio frame, and the second time unit is a second subframe of the radio frame, where the first subframe is separated from the second subframe by half. Radio frames.

In some possible implementation manners, the first subframe is a subframe 0 of a radio frame, and the second subframe is a subframe 5 of the radio frame.

In some possible implementations, the N signal sequences are ZC sequences.

In some possible implementations, the method further includes:

Generating a second signal, wherein the second signal is used to identify an area identifier;

The second signal is sent.

The embodiment of the present application can simplify the identification process by transmitting the second signal for identifying the area identifier, thereby reducing resource overhead.

In some possible implementations, the second signal includes a third signal sequence or a fourth signal sequence, the third signal sequence and the fourth signal sequence are interleaved by the first m sequence and the second m sequence according to different interleaving sequences. form.

In some possible implementations, the first m sequence and the second m sequence are both 31 in length.

In some possible implementations, the interleaving sequence is used to identify the transmission unit structure type.

In some possible implementations, the time domain transmission locations of the second signal are the same for different transmission unit structure types.

In some possible implementations, the sending the second signal includes:

When the frequency resource of the area includes a plurality of sub-bands, the second signal is transmitted on the first one of the plurality of sub-bands.

In some possible implementations, the sending the second signal includes:

When the area is a high-low frequency hybrid networking area, the second signal is transmitted in a low frequency band of the area.

In some possible implementations, the sending the second signal includes:

The second signal is transmitted by a part of the transceiver node TRP of the area.

In some possible implementations, sending the first signal includes:

When the frequency resource of the region includes a plurality of subbands, the first signal is transmitted on each of the plurality of subbands.

In some possible implementations, sending the first signal includes:

When the area is a high-low frequency hybrid networking area, the first signal is transmitted in the low frequency band and the high frequency band of the area.

In some possible implementations, sending the first signal includes:

Transmitting the same first signal through different beams in a high frequency band of the area, wherein a bias between the signal sequences in the first signal sent by different beams is different, and the offset is used to identify the beam; or

In the high frequency band of the area, different first signals are transmitted through different beams, and the first signal is used to identify the beam.

In some possible implementations, sending the first signal includes:

The first signal is transmitted through all TRPs of the area.

In some possible implementations, for different transmission unit structure types, the time domain transmission location of the first signal is different, and the time domain transmission location of the first signal is used to identify the transmission unit structure type.

In a second aspect, a method of transmitting a signal is provided, comprising:

Transmitting a first signal on each of the plurality of subbands of the regional frequency resource, where the first signal is used by the terminal device for time synchronization;

A second signal is transmitted on the first of the plurality of subbands, the second signal being used to identify an area identifier of the area.

In the embodiment of the present application, the second signal for identifying the area identifier is sent only on the first sub-band, and the second signal does not need to be sent on each sub-band, so that the resource overhead can be reduced.

In some possible implementations, the number of the first sub-bands is greater than or equal to 1, and is less than the number of the plurality of sub-bands.

In a third aspect, a method of transmitting a signal is provided, comprising:

Transmitting a first signal in a low frequency band of the high and low frequency hybrid networking area, where the first signal is used by the terminal device to perform time synchronization in a low frequency band of the area, and transmitting a third signal in the high frequency band of the area, where the third signal is used Performing time synchronization in the high frequency band of the area at the terminal device;

A second signal is transmitted in the low frequency band of the area, the second signal being used to identify the area identification of the area.

In the embodiment of the present application, the second signal for identifying the area identifier is sent only in the low frequency band, and the second signal is not sent in the high frequency band, so that the resource overhead can be reduced.

In some possible implementations, the first signal and the third signal are the same.

In some possible implementations, the third signal is a primary synchronization signal PSS in a Long Term Evolution (LTE) system.

In some possible implementations, the third signal is sent in a high frequency band of the area, including:

In the high frequency band of the area, the same third signal is transmitted through different beams, wherein the offset between the signal sequences in the third signal transmitted by different beams is different, and the offset is used to identify the beam.

In the high frequency band of the region, different first signals are transmitted through different beams, and the third signals are used to identify the beams.

In some possible implementations, for different transmission unit structure types, the time domain transmission location of the third signal is different, and the time domain transmission location of the third signal is used to identify the transmission unit structure type.

In a fourth aspect, a method of transmitting a signal is provided, including:

Receiving a first signal, where the first signal includes N signal sequences, at least two of the N signal sequences are different, and N is a positive integer greater than or equal to 2;

Time synchronization is performed based on the first signal.

After the first signal of the embodiment of the present application is used, synchronization can be realized with only one signal. Therefore, the embodiment of the present application can simplify the synchronization process, thereby reducing resource overhead.

In some possible implementations, performing time synchronization according to the first signal includes:

The half frame timing and the frame timing are determined based on the first signal sequence and the second signal sequence.

In some possible implementations, the N signal sequences are ZC sequences.

In some possible implementations, the method further includes:

Receiving a second signal, wherein the second signal is used to identify an area identifier;

Area identification is performed based on the second signal.

In some possible implementations, the method further includes:

The transmission unit structure type is identified according to the interleaving order of the third signal sequence or the fourth signal sequence.

In some possible implementations, receiving the second signal includes:

When the frequency resource of the region includes a plurality of subbands, the second signal is received on a first one of the plurality of subbands.

In some possible implementations, receiving the second signal includes:

When the area is a high-low frequency hybrid networking area, the second signal is received in a low frequency band of the area.

In some possible implementations, receiving the first signal includes:

When the frequency resource of the region includes a plurality of subbands, the first signal is received on each of the plurality of subbands.

In some possible implementations, receiving the first signal includes:

When the area is a high-low frequency hybrid networking area, the first signal is received in the low frequency band and the high frequency band of the area.

In some possible implementations, the method further includes:

The transmission unit structure type is identified according to the time domain transmission location of the first signal.

In a fifth aspect, a method of transmitting a signal is provided, including:

Receiving a first signal on each of a plurality of subbands of a frequency resource of the region;

Performing time synchronization according to the first signal;

Receiving a second signal on a first one of the plurality of sub-bands;

The area identifier of the area is identified based on the second signal.

The embodiment of the present application does not transmit a second signal for identifying the area identifier on each sub-band, thereby being able to reduce Resource overhead.

In some possible implementations, the method further includes:

In a sixth aspect, a method of transmitting a signal is provided, including:

Receiving the first signal in a low frequency band of the high and low frequency hybrid networking area;

Performing time synchronization in a low frequency band of the region according to the first signal;

Receiving a third signal in a high frequency band of the area;

Performing time synchronization in a high frequency band of the region according to the third signal;

Receiving a second signal in a low frequency band of the area;

The area identifier of the area is identified based on the second signal.

The embodiment of the present application transmits the second signal for identifying the area identifier only in the low frequency band, and does not transmit the second signal in the high frequency band, thereby reducing resource overhead.

In some possible implementations, the method further includes:

A beam of a high frequency band of the region is identified based on an offset between the signal sequences in the third signal.

In some possible implementations, the method further includes:

A beam of a high frequency band of the region is identified based on the third signal.

In some possible implementations, the method further includes:

The transmission unit structure type is identified according to the time domain transmission location of the third signal.

In a seventh aspect, an apparatus for transmitting a signal, comprising a processor and a transceiver, is operative to perform the methods of the first to third aspects above or any possible implementation thereof.

In an eighth aspect, an apparatus for transmitting a signal, comprising a processor and a transceiver, is operative to perform the method of the fourth to sixth aspects or any possible implementation thereof.

In a ninth aspect, a computer storage medium is provided having stored therein program code, the program code being operative to indicate a method of performing the first to sixth aspects above or any possible implementation thereof.

DRAWINGS

FIG. 1 is a schematic diagram of a scenario in which an embodiment of the present application is applicable.

2 is a schematic diagram of a cell search and synchronization scheme of a 4G system.

FIG. 3 is a schematic diagram of a position allocation mode of PSS and SSS in different duplex modes of a 4G system.

FIG. 4 is a schematic flowchart of a method for transmitting a signal according to an embodiment of the present application.

FIG. 5 is a schematic flowchart of a method for transmitting a signal according to another embodiment of the present application.

6a and 6b are schematic diagrams showing the m-sequence interleaving of the embodiment of the present application.

7a and 7b are schematic diagrams of a first signal and a second signal in an embodiment of the present application.

FIG. 8 is a schematic flowchart of a method for transmitting a signal according to still another embodiment of the present application.

FIG. 9 is a schematic diagram of a transmission signal in a hybrid Numerology mode according to an embodiment of the present application.

FIG. 10 is a schematic flowchart of a method for transmitting a signal according to still another embodiment of the present application.

11a and 11b are schematic diagrams of transmission signals in a high frequency band according to an embodiment of the present application.

FIG. 12 is a schematic diagram of transmission signals in a high and low frequency hybrid networking area according to an embodiment of the present application.

FIG. 13 is a schematic block diagram of an apparatus for transmitting a signal according to an embodiment of the present application.

FIG. 14 is a schematic block diagram of an apparatus for transmitting a signal according to another embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

The terms "component," "module," "system," and the like, as used in this specification, are used to mean a computer-related entity, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and a computing device can be a component. One or more components can reside within a process and/or execution thread, and the components can be located on one computer and/or distributed between two or more computers. Moreover, these components can execute from various computer readable media having various data structures stored thereon. A component may, for example, be based on signals having one or more data packets (eg, data from two components interacting with another component between the local system, the distributed system, and/or the network, such as the Internet interacting with other systems) Communicate through local and/or remote processes.

FIG. 1 is a schematic diagram of a scenario in which an embodiment of the present application is applied. As shown in FIG. 1, a plurality of TRPs 101-105 form an area, which may be a physical area or a virtual area. For the convenience of description, a region is taken as an example for description in the embodiment of the present application. This area can be called a Hypercell or other name. The area may contain one or more TRPs, optionally, may or may not become one or more TRPs; may become one or more TRPs, may refer to TRPs included in different time periods The number is different. For example, an area may include 2 TRPs in one time period, and 3 TRPs in another time period. It may become one or more TRPs, which may be based on terminal equipment, such as terminal equipment. 1, including three TRPs with

hypothetical sequence numbers

1, 2, 3, for terminal equipment #2, including two TRPs with

hypothetical sequence numbers

3, 4; of course, design for regions of different time periods or regional design based on terminal equipment The TRPs contained in the area may or may not overlap. The area may also be an area containing one or more functional entities, optionally an area that may or may not become one or more functional entities; may become one or more functional entities, may refer to The number of functional entities included in different time periods is different. For example, one area may contain two functional entities in one time period, and three functional entities may be included in another time period; one or more functional entities may be included, which may refer to It is based on the terminal device, for example, for the terminal device #1, including three functional entities with the

hypothetical sequence number

1, 2, 3, and for the terminal device #2, including two functional entities with the

hypothetical sequence number

3, 4; The design of the area of the time period or the area design based on the terminal device may or may not overlap the functional entities contained in the area. This area has an area identifier, and the identifier identifying the area may be, but is not limited to, a cell identifier or a cell ID or an identifier parameter or an ID, such as a dedicated connection signature (which may be referred to as a DCS), where the US public number of the DCS is introduced. The patented content entitled "System and Method For UE Centric Unified System Access in Virtual Radio Access Network" is also considered to be part of the content of this application. The terminal device 111 only needs to access according to the area identifier, and can obtain the service of the TRP in the Hypercell, and is no longer fixedly connected to a certain TRP. Of course, the embodiment of the present application can also be used in other different scenarios. For example, the terminal device can also be fixedly connected to one or more TRPs. The concept of the area can be varied as described above, such as the US publication number US2014/0113643, and the application name is "System and Method for The patent content of Radio Access Virtualization can also be considered as part of the content of the present application. For example, the US Patent Publication No. US2015/0141002, and the patent application entitled "Systems and Methods for Non-cellular Wireless Access" can also be considered as the content of the present application. portion.

It should be understood that FIG. 1 is only a simplified schematic diagram of an example, and may include more TRPs or other network devices, which are not shown in FIG.

This specification describes various embodiments in connection with a terminal device. The terminal device may also refer to a user equipment (User Equipment, UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, and a user agent. Or user device. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, or a Personal Digital Assistant ("PDA"). A handheld device having a wireless communication function, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a future 5G network, or a terminal device in a future evolved PLMN network.

This specification describes various embodiments in connection with a TRP. The TRP may be a network device for communicating with the terminal device, and the network device may be a Base Transceiver Station (BTS) in GSM or CDMA, or may be a base station (NodeB, NB) in the WCDMA system, or may be LTE. The evolved base station (Evolutional Node B, eNB or eNodeB) in the system may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or the network device may be a relay station or an access point. , in-vehicle devices, wearable devices, and network devices in future 5G networks or network devices in future evolved PLMN networks.

The cell search and synchronization scheme of the existing 4G system is as shown in FIG. 2, and two special symbols are transmitted on each downlink component carrier, a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (Secondary Synchronization Signal, SSS). The PSS has three different signal sequences, one for each of the three cell IDs in a group of cell ID groups. The two PSSs transmitted in one radio frame are identical, allowing the terminal device to obtain slot timing. The SSS corresponds to a group of 168 groups of cell IDs, which are generated by two m sequences of length 31, and the effective values of the two SSSs transmitted in one radio frame are different from each other, and the frame can be obtained by detecting a single SSS. Timing to get synchronization. The frame positions of the PSS and SSS are used to distinguish the duplex mode. For example, FIG. 3 shows a frame position allocation mode of PSS and SSS in a frequency division duplex (FDD) and a time division duplex (TDD) mode of an existing 4G system. In FDD mode, the PSS is transmitted on the 0th subframe and the 5th subframe, and the SSS is located on the first symbol before the PSS. In TDD mode, the PSS is transmitted on the 1st subframe and the 6th subframe, and the SSS is located on the third symbol before the PSS. In the existing 4G system, PSS and SSS are generally only transmitted on subcarriers near the system center frequency, that is, the PSS and SSS transmission frequency ranges do not need to occupy the entire bandwidth.

In the embodiment of the present application, the synchronization and the area identification function are decoupled, and a new synchronization signal design scheme can be provided. The time synchronization of the terminal device can only use the first signal, and the area identification can only be used. The two signals, cell search and synchronization can be performed independently and separately, simplifying the cell search and synchronization process, and effectively reducing resource overhead. In addition, for different transmission unit structure types (such as different duplex modes), the first signal and the second signal may each adopt only one structure (for example, the transmission positions of the first signals in the two duplex modes are the same, The transmission position of the second signal in the two duplex modes is the same), and the transmission unit structure type identification is performed by the second signal.

It should be understood that in various embodiments of the present application, the "first signal" and the "second signal" may be used in the existing The name of the synchronization signal, that is, the first signal may be the PSS and the second signal may be the SSS, or other names may be used, which is not limited by the embodiment of the present application. In addition, other processing based on synchronization signals not covered herein, such as frequency synchronization, may be used or referenced to the prior art.

In the embodiment of the present application, the transmission unit structure type may be, for example, a frame structure type, and different transmission unit structure types may be used for different duplex modes, and the transmission unit structure type may further represent a duplex mode, such as TDD or FDD.

In this embodiment of the present application, the transmission unit may be, but not limited to, a time unit, and the time unit may represent a time domain resource of the transmission signal, which may use an existing radio frame or frame, a subframe, a time slot, and a transmission time interval. (Transmission Time Interval, TTI), the name or meaning of terms such as OFDM symbols, may also mean the meaning in the future communication system. In addition, the present application does not limit the names of these terms, that is, these terms may be employed in future communication systems in the name of future communication systems.

Taking a sub-frame as an example, the meaning of a sub-frame may change in a future communication system. For example, the subframe is not limited to 1 ms, and may be other subframe lengths, or may be a dynamic subframe length. The length of the subframe may vary with the subcarrier spacing. The name of the subframe may also change. If the name of the subframe changes, the subframe in the embodiment of the present application may be transformed into a corresponding name in a future communication system. In the description herein, for the sake of brevity, the description of the present general description will be taken as an example.

FIG. 4 shows a schematic flow chart of a method of transmitting a signal according to an embodiment of the present application. The TRP in FIG. 4 may be the TRP in the TRP 101-105 in FIG. 1; the terminal device may be the terminal device 111 in FIG. Of course, in the actual system, the number of the TRP and the terminal device may not be limited to the examples in this embodiment or other embodiments, and details are not described herein.

410. The TRP generates a first signal, where the first signal includes N signal sequences, at least two of the N signal sequences are different, and N is a positive integer greater than or equal to 2. The first signal is used. The terminal device performs time synchronization only based on the first signal.

In the embodiment of the present application, at least two of the plurality of signal sequences included in the first signal are different, different from the existing PSS using the same signal sequence, so that the terminal device can detect different ones of the first signal. The signal sequence implements time synchronization, such as slot timing, frame timing, or transmission unit timing.

Optionally, N is 2, and the N signal sequences are a first signal sequence and a second signal sequence, and the first signal sequence and the second signal sequence are conjugate with each other. That is to say, in this case, the first signal comprises two signal sequences conjugated to each other, namely a first signal sequence and a second signal sequence.

In the case where the first signal uses two signal sequences conjugated to each other, the receiver is relatively simple, and only needs to correlate the received synchronization signals with a known sequence to detect, without using two known sequences. The received synchronization signals are correlated to detect.

Specifically, the first signal may adopt a Zadoff-Chu (ZC) sequence, that is, the N signal sequences are ZC sequences. Optionally, the first signal sequence and the second signal sequence may be mutually conjugated ZC sequences.

For example, a sequence for the first signal can be generated according to the following equation (1):

Where u is the root index of the ZC sequence. u can be a positive integer or a negative integer. When the first signal includes N signal sequences, the u corresponding to the N signal sequences may both be positive integers or negative integers. Alternatively, the first signal sequence and the second signal sequence can be obtained by selecting two different root indices u. Further, by selecting two special different root indices u, two mutually conjugated firsts can be obtained. A signal sequence and a second signal sequence. For example, the root index u _{1 of the} first signal sequence may be 29, and the root index u _{2 of the} second signal sequence may be 34.

420. The TRP sends the first signal.

The terminal device has a corresponding receiving action. In the embodiment of the present application, the receiving action of the corresponding receiving end belongs to the protection scope of the present application, and details are not repeatedly described herein.

Specifically, the N signal sequences of the first signal are transmitted in different N time units, and the different N time units are separated by one or more predetermined offset values, that is, each signal sequence is transmitted in one time unit. The time units are separated by one or more predetermined offset values. For example, in the case where N is 2, two signals are respectively transmitted in two time units, and the two time units are separated by one or more predetermined offset values.

Optionally, when the first signal includes the first signal sequence and the second signal sequence, the TRP may send the first signal sequence in a first time unit, and send the second signal sequence in a second time unit, where the A time unit is spaced from the second time unit by one or more predetermined offset values.

In the embodiment of the present application, the time unit represents a continuous time in the time domain. For example, the time unit may be a subframe, but the embodiment of the present application does not limit this.

The first time unit transmitting the first signal sequence is spaced from the second time unit transmitting the second signal sequence by one or more predetermined offset values such that the terminal device can achieve time synchronization by detecting the two signal sequences.

For example, when two signal sequences of the first signal are transmitted within one radio frame, frame synchronization can be achieved by the first signal.

For example, the TRP transmits the first signal sequence in a first subframe of the radio frame, and transmits the second signal sequence in a second subframe of the radio frame, where the first subframe is separated from the second subframe by half. Wireless frame. That is, the first signal sequence is transmitted on the first subframe, and the second signal sequence is transmitted on the second subframe. Thus, the terminal device can be made to recognize the half frame timing and the frame timing.

Optionally, the first subframe is a subframe 0 of the radio frame, and the second subframe is a subframe 5 of the radio frame.

Specifically, the first signal sequence is transmitted on the 0th subframe, and the second signal sequence is transmitted on the 5th subframe. It should be understood that the first signal sequence may also be transmitted on subframe number 1 and the second signal sequence may be transmitted on subframe number 6. In addition, for different transmission unit structure types, for example, for FDD and TDD modes, the first signal may be sent on the same subframe, for example, both on the 0th and 5th subframes, or The first signal is transmitted on different subframes, for example, one mode is transmitted on

subframes

0 and 5, and the other mode is transmitted on

subframes

1 and 6. That is to say, the position of the first subframe and the second subframe is not limited in the present application.

430. The terminal device performs time synchronization according to the first signal.

The terminal device receives the first signal sent by the TRP, and performs time synchronization according to the first signal. Since at least two of the plurality of signal sequences included in the first signal are different, and are no longer the same two sequences in the LTE system, the terminal device can achieve synchronization only by using the first signal, for example, Frame synchronization and frame timing are determined to achieve frame synchronization. Of course, this application mainly introduces time synchronization. The frequency synchronization can adopt the method that the first signal is located at the center frequency to achieve frequency synchronization, and of course, other frequency synchronization schemes can also be adopted. Therefore, the signals for synchronization described in the embodiments of the present application can be used not only for time synchronization but also for time-frequency synchronization, and details are not described herein again. That is to say, after the first signal of the present application is used, synchronization can be realized with only one synchronization signal. Therefore, this application is The technical solution of the embodiment can simplify the synchronization process, thereby reducing resource overhead.

Therefore, the method for transmitting a signal in the embodiment of the present application can simplify the synchronization process by transmitting the first signal including at least two different signal sequences, thereby reducing resource overhead.

The scheme for the first signal provided by the embodiment of the present application is described above, and the scheme for the second signal provided by the embodiment of the present application is described below.

It should be understood that the various solutions of the embodiments of the present application may be implemented separately or in combination with each other.

FIG. 5 shows a schematic flow chart of a method of transmitting a signal according to another embodiment of the present application. The TRP in FIG. 5 may be the TRP in the TRP 101-105 in FIG. 1; the terminal device may be the terminal device 111 in FIG.

510. The TRP generates a second signal, where the second signal is used to identify an area identifier. The area identifier can be identified based only on the second signal.

In the embodiment of the present application, the area identifier is identified by the second signal, that is, the area identifier is independently identified by the second signal, and is no longer jointly identified by the first signal and the second signal.

Optionally, the second signal may include a third signal sequence or a fourth signal sequence, and the third signal sequence and the fourth signal sequence are alternately formed by the first m sequence and the second m sequence according to different interleaving sequences.

For example, the third signal sequence is formed by the first m sequence and the second m sequence being interleaved according to a first interleaving sequence, and the fourth signal sequence is formed by the first m sequence and the second m sequence being interleaved according to a second interleaving order; Alternatively, the third signal sequence is formed by interleaving the first m sequence and the second m sequence according to a second interleaving sequence, the fourth signal sequence being formed by the first m sequence and the second m sequence being interleaved according to the first interleaving order.

For example, the sequence of the second signal may be generated according to the following equation (2) or (3), wherein one of the equations (2) and (3) may generate a third signal sequence and the other may generate a fourth signal sequence :

Where 0 ≤ n ≤ 30,

with

M sequence

Obtained according to the following equation (4):

In equation (4)

For the first m sequence,

For the second m sequence, they are all 31 in length. m sequence in equation (4)

Obtained by the following equation (5):

In the formula (5), x(i) satisfies the following relationship:

Its initial value is: x(0)=0, x(1)=0, x(2)=0, x(3)=0, x(4)=1.

Scrambling sequence

with

It can be obtained by the following equation (7):

among them,

Its initial value is: x(0)=0, x(1)=0, x(2)=0, x(3)=0, x(4)=1.

The indices m ₀ and m ₁ can be identified from the area according to the following equation (9)

Deduced:

Optionally, the indices m ₀ and m ₁ and the area identifier

The corresponding relationship can be as shown in Table 1.

Table 1

From the above, the second signal can identify 168 area identifiers. Since all TRPs share the same area identifier in the Hypercell, for example, the Hypercell ID, the second signal can be used to identify enough Hypercell IDs.

Figure 6a shows a schematic diagram of the interleaving of two m-sequences (X and Y). As shown in FIG. 6a, the m sequence X(X ₀ , X ₁ ... X ₃₀ ) and the m sequence Y (Y ₀ , Y ₁ ... Y ₃₀ ) are interleaved to obtain, for example, a third signal sequence X ₀ , Y ₀ ,...X. _{_30,} Y _30. Of course, if the interleaving order is changed, for example, the fourth signal sequence Y ₀ , X ₀ , ... Y ₃₀ , X ₃₀ can be obtained. Figure 6b shows a schematic diagram of two signal sequences interleaved from two m-sequences according to different interleaving sequences. In Figure 6b, the upper signal sequence uses the dark m-sequence first, the light-colored m-sequences in the subsequent staggered order, the lower signal sequence uses the light-colored m-sequence first, and the dark m-sequence After the staggered order.

520. The TRP sends the second signal.

The TRP transmits the second signal in a radio frame, and the area identifier can be implemented by the second signal.

Since the third signal sequence and the fourth signal sequence are generated according to different interleaving sequences, different transmission unit structure types can be indicated by different interleaving sequences. For example, if it is a third signal sequence, it indicates a first transmission unit structure type, for example, a first duplex mode; if it is a fourth signal sequence, it indicates a second transmission unit structure type, for example, a second type. Duplex mode.

For example, in this case, the transmitted second signal can be expressed by the following equation (10):

Optionally, the correspondence between the interleaving sequence and the transmission unit structure type may be agreed, or may be determined by the network side, which is not limited by the embodiment of the present application.

Thus, by transmitting a second signal of a different sequence of interleaved sequences, different types of transmission unit structures can be identified.

Since the transmission unit structure types can be identified by the interleaving order, the time domain transmission locations of the second signals can be the same for different transmission unit structure types. For example, for different transmission unit structure types, the second signal is transmitted on

subframes

0 and 5; of course, for different transmission unit structure types, the second signal may also be sent on different subframes. For example, for the first type of transmission unit structure, it is transmitted on

subframes

0 and 5, and for the second type of transmission unit structure, it is transmitted on

subframes

1 and 6. That is to say, for different transmission unit structure types, the time domain transmission position of the second signal may be the same or different, which is not limited by the embodiment of the present application.

530. The terminal device performs area identification according to the second signal.

The terminal device receives the second signal sent by the TRP, and performs area identification according to the second signal. Since the area identifier can be independently identified by the second signal, the terminal device can identify the area only by the second signal. Therefore, the technical solution of the embodiment of the present application can simplify the area identification process, thereby reducing resource overhead.

Therefore, the method for transmitting a signal in the embodiment of the present application can simplify the identification process by transmitting the second signal for identifying the area identifier, thereby reducing resource overhead.

Optionally, the terminal device may also identify the transmission unit structure type according to the interleaving order. For example, if the sequence of the first interleaving sequence is received, it is determined to be the first type of transmission unit structure; if the sequence of the second interleaving sequence is received, it is determined to be the second type of transmission unit structure.

The first signal and the second signal provided by the embodiments of the present application are respectively described above. Optionally, as a preferred embodiment, the foregoing first signal and the second signal may be simultaneously used, time synchronization is implemented by the first signal, and area identification and transmission unit structure type identification is implemented by the second signal. For example, a scheme in which the first signal and the second signal of the embodiment of the present application are simultaneously used may be as shown in FIG. 7a.

Optionally, when the first signal and the second signal of the embodiment of the present application are simultaneously used, the transmission positions of each synchronization signal in different duplex modes may be the same for different duplex modes. For example, different duplex modes can use the design shown in Figure 7b.

The present application also provides a method of transmitting signals in a hybrid Numerology mode. Figure 8 shows A schematic flow chart of a method of transmitting a signal according to still another embodiment of the present application. The TRP in FIG. 8 may be the TRP in the TRP 101-105 in FIG. 1; the terminal device may be the terminal device 111 in FIG.

810. The TRP sends a first signal on each of the multiple subbands of the regional frequency resource, where the first signal is used by the terminal device for time synchronization. Of course, those skilled in the art can know that the sub-bands can be other names, and are also within the scope of the present application.

For the hybrid Numerology mode, the frequency resource of the area includes multiple sub-bands, and the sub-band spacing may or may not be fixed, and the length of one or more sub-bands may also be inconsistent. In this case, the TRP sends a first signal on each subband to synchronize the time of the terminal device.

Optionally, the first signal may be the first signal provided by the foregoing embodiment of the present application, or other synchronization signals may be used, which is not limited by the embodiment of the present application.

820. The TRP sends a second signal on the first subband of the multiple subbands, where the second signal is used to identify an area identifier of the area, for example, the area identifier of the area may be separately identified, or The signal jointly identifies the area identifier of the area, and further the second signal can also be used to identify the transmission unit structure type, and further the second signal can also be used for time synchronization, either alone or in conjunction with the first signal, such as for performing Frame timing, etc.

Since the area identifiers corresponding to each sub-band are the same, the second signal for identifying the area identifier can be sent only on the first sub-band, and the second signal does not need to be sent on each sub-band, so that the resource overhead can be reduced.

Optionally, the number of first sub-bands is greater than or equal to 1, and less than the number of the plurality of sub-bands.

Optionally, the second signal may be the second signal provided by the foregoing embodiment of the present application, or other synchronization signals may be used, which is not limited by the embodiment of the present application.

830. The terminal device performs time synchronization according to the first signal.

Specifically, the terminal device can perform time synchronization in the subband according to the first signal received on each subband.

840. The terminal device identifies the area identifier of the area according to the second signal.

Since the area identifiers corresponding to each sub-band are the same, the terminal device can perform area identification according to the second signal on the first sub-band.

Optionally, for different transmission unit structure types, the time domain transmission location of the first signal is different, and the time domain transmission location of the first signal is used to identify the transmission unit structure type.

Specifically, since the second signal is transmitted only on the first sub-band, and the second signal is not transmitted on the other sub-bands, only the first signal is transmitted. Therefore, the terminal device can identify the location in the radio frame according to the first signal. Transmission unit structure type.

Figure 9 is an example of a transmitted signal in a mixed Numerology mode. As shown in FIG. 9, the first signal and the second signal are transmitted only on the subband 0, and only the first signal is transmitted on the other subbands. The terminal device performs area identification according to the second signal, and performs synchronization according to the first signal on each sub-band.

The present application also provides a method of transmitting signals in the context of a high and low frequency hybrid networking. FIG. 10 is a schematic flow chart showing a method of transmitting a signal according to still another embodiment of the present application. The TRP in FIG. 10 may be one or more TRPs in the TRPs 101-105 in FIG. 1; the terminal device may be the terminal device 111 in FIG.

1010. The first signal is sent in a low frequency band of the high and low frequency hybrid networking area, where the first signal is used by the terminal device to perform time synchronization in a low frequency band of the area, where time timing includes, but is not limited to, half frame timing, frame timing, and the like. A third signal is transmitted in the high frequency band of the area, and the third signal is used by the terminal device to perform time synchronization in a high frequency band of the area.

In the high-low frequency hybrid networking environment, the network side sends a signal for time synchronization in both the low frequency band and the high frequency band. No. The TRP of the transmitted signal in the low band and the high band may be different or the same. The low and high frequency bands can be serviced by different network devices, for example, TRP; the low and high frequency bands can also be served by the same network device, for example, TRP. If the low frequency band and the high frequency band are respectively served by different TRPs, the TRP of the low frequency band transmits the first signal, and the TRP of the high frequency band transmits the third signal; if the low frequency band and the high frequency band are served by the same TRP, then The TRP transmits the first signal in a low frequency band and the third signal in a high frequency band.

Optionally, the first signal is the same as the third signal. For example, the first signal provided by the foregoing embodiment of the present application may be used, and other synchronization signals may be used, which is not limited by the embodiment of the present application.

Alternatively, the third signal may be a PSS in an LTE system, that is, an existing PSS may be employed.

Optionally, the TRP sends the same third signal through different beams in the high frequency band of the area, where the offset between the signal sequences in the third signal sent by different beams is different, for example, the third signal is two. A different signal sequence, such as signal sequence 1 and signal sequence 2, is taken as an example, as shown in Figure 11a, then the signal sequence 1 and signal sequence 2 offset of the third signal on one beam can be used to identify the beam, such as Figure 11a. The offset shown in is used to identify beam 5. Of course, for example, the third signal comprises two signal sequences or the same signal sequence. For example, the above-mentioned example signal sequence 1 and signal sequence 2 may be the same. The offset can be an offset in the time domain or an offset in the frequency domain that is used to identify the beam.

Optionally, the TRP transmits different third signals through different beams in the high frequency band of the area, and the third signal is used to identify the beam.

Specifically, in the high frequency band, the TRP transmits signals through different beams. When the synchronization signal is transmitted, the synchronization signals transmitted on different beams may be the same, for example, as shown in FIG. 11a, in which the offset between the signal sequences in the third signal transmitted by different beams is different, and different offsets are used to identify the beam. The synchronization signals transmitted on different beams may also be different. For example, as shown in FIG. 11b, different synchronization signals are used to identify the beams. Of course, the offset between the signal sequences in the third signals transmitted on the respective beams in FIG. 11b is the same. But in fact it can be different. The third signal in Figure 11b may comprise a different signal sequence or may comprise the same signal sequence.

1020. Send a second signal in a low frequency band of the area, where the second signal is used to identify an area identifier of the area.

The second signal is transmitted in the low frequency band, the second signal is not transmitted in the high frequency band, and the terminal device performs area identification according to the second signal in the low frequency band.

1030. The terminal device performs time synchronization according to the first signal and the third signal.

Specifically, the terminal device may perform time synchronization in the low frequency band according to the first signal of the low frequency band, and perform time synchronization in the high frequency band according to the third signal of the high frequency band.

1040. The terminal device identifies the area identifier of the area according to the second signal.

Since the area identifiers corresponding to the high frequency band and the low frequency band are the same, the terminal device can perform area identification according to the second signal in the low frequency band.

Optionally, for different transmission unit structure types, the time domain transmission location of the third signal is different, and the time domain transmission location of the third signal is used to identify the transmission unit structure type.

Specifically, since the second signal is transmitted only in the low frequency band, the second signal is not transmitted in the high frequency band, and only the third signal is transmitted. Therefore, the terminal device can identify the transmission unit structure according to the position of the third signal in the wireless frame. Types of.

It should be understood that, in the low frequency band, the transmission unit structure type may be identified according to the second signal, which is not limited by the embodiment of the present application.

Figure 12 is an example of a transmission signal in a high and low frequency hybrid networking area. As shown in FIG. 12, the first signal is transmitted in both the high frequency band and the low frequency band, and the second signal is transmitted only in the low frequency band.

It should be understood that in the high and low frequency hybrid networking area in FIG. 12, the high frequency band and the low frequency band are divided by 6 GHz. This is only an example, and the application does not limit the division manner of the high frequency band and the low frequency band.

It should be understood that in various embodiments of the present application, the second signal may be transmitted through a portion of the TRP of the region to further reduce resource overhead.

It should be understood that the specific examples herein are only intended to assist those skilled in the art to understand the embodiments of the present invention, and not to limit the scope of the embodiments of the present application.

It should be understood that, in the various embodiments of the present application, the size of the sequence numbers of the foregoing processes does not mean the order of execution sequence, and the order of execution of each process should be determined by its function and internal logic, and should not be applied to the embodiment of the present application. The implementation process constitutes any limitation.

The method of transmitting a signal according to an embodiment of the present application has been described in detail above, and an apparatus for transmitting a signal according to an embodiment of the present application will be described below.

FIG. 13 is a schematic block diagram of an apparatus 1300 for transmitting signals in accordance with an embodiment of the present application. The device 1300 is a device on the network side, and may be, for example, a TRP.

It should be understood that the apparatus 1300 can correspond to one or more TRPs in various method embodiments, and can have any of the functions of the TRP in the method.

As shown in FIG. 13, the apparatus 1300 includes a processor 1310 and a transceiver 1320.

In one embodiment, the processor 1310 is configured to generate a first signal, where the first signal includes N signal sequences, at least two of the N signal sequences are different, and N is greater than or equal to 2. a positive integer, the first signal is used by the terminal device to perform time synchronization only according to the first signal;

The transceiver 1320 is configured to send the first signal.

Optionally, the N signal sequences are transmitted in different N time units, and the different N time units are separated by one or more predetermined offset values.

Optionally, N is 2, and the N signal sequences are a first signal sequence and a second signal sequence, and the first signal sequence and the second signal sequence are conjugate to each other.

Optionally, the transceiver 1320 is specifically configured to: send the first signal sequence in a first time unit, and send the second signal sequence in a second time unit, where the first time unit is spaced apart from the second time unit One or more predetermined offset values.

Optionally, the N signal sequences are ZC sequences.

In another embodiment, the processor 1310 is configured to generate a second signal, where the second signal is used to identify an area identifier;

The transceiver 1320 is configured to send the second signal.

Optionally, the second signal comprises a third signal sequence or a fourth signal sequence, and the third signal sequence and the fourth signal sequence are alternately formed by the first m sequence and the second m sequence according to different interleaving sequences.

Optionally, the interleaving sequence is used to identify the transmission unit structure type.

Optionally, for different transmission unit structure types, the time domain transmission location of the second signal is the same.

Optionally, the transceiver 1320 is specifically configured to: when the frequency resource of the area includes multiple sub-bands, send the second signal on the first sub-band of the multiple sub-bands.

Optionally, the transceiver 1320 is specifically configured to be low in the area when the area is a high-low frequency hybrid networking area. The second signal is sent in the frequency band.

Optionally, the transceiver 1320 is specifically configured to: when the frequency resource of the area includes multiple sub-bands, send the first signal on each of the multiple sub-bands.

Optionally, the transceiver 1320 is specifically configured to: when the area is a high-low frequency hybrid networking area, send the first signal in the low frequency band and the high frequency band of the area.

Optionally, the transceiver 1320 is specifically configured to: send the same first signal by using different beams in a high frequency band of the area, where an offset between signal sequences in the first signal sent by different beams Different, the offset is used to identify the beam; or,

In another embodiment, the processor 1310 is configured to generate the first signal and the second signal;

The transceiver 1320 is configured to send the first signal on each of the plurality of subbands of the frequency resource of the area, where the first signal is used for time synchronization of the terminal device, and the first one of the multiple subbands The second signal is transmitted on the belt, and the second signal is used to identify the area identifier of the area.

Optionally, the number of the first sub-bands is greater than or equal to 1, and is less than the number of the plurality of sub-bands.

In another embodiment, the apparatus 1300 is a device for transmitting signals in a high frequency band of a high-low frequency hybrid networking area, wherein a first signal and a second signal are transmitted in a low frequency band of the area, the first signal being used for The terminal device performs time synchronization in a low frequency band of the area, and the second signal is used to identify an area identifier of the area;

The processor 1310 is configured to generate a third signal;

The transceiver 1320 is configured to send the third signal in a high frequency band of the area, where the third signal is used by the terminal device to perform time synchronization in a high frequency band of the area.

Optionally, the first signal is the same as the third signal.

Optionally, the transceiver 1320 is specifically configured to send the same third signal by using different beams in a high frequency band of the area, where an offset between the signal sequences in the third signal sent by different beams is performed. Different, the offset is used to identify the beam; or,

In another embodiment, the apparatus 1300 is a device for transmitting signals in a low frequency band of a high and low frequency hybrid networking area, wherein a high frequency band of the area transmits a third signal, and the third signal is used by the terminal device to perform the area. Time synchronization in the high frequency band;

The processor 1310 is configured to generate a first signal and a second signal, where the first signal is used by the terminal device to perform time synchronization in a low frequency band of the area, and the second signal is used to identify an area identifier of the area;

The transceiver 1320 is configured to transmit the first signal and the second signal in a low frequency band of the area.

In another embodiment, the present application further provides a system, which may include the above-mentioned high and low frequency mixing group. A device for transmitting signals in a high frequency band of a network region and a device for transmitting signals in a low frequency band of a high-low frequency hybrid networking region.

FIG. 14 is a schematic block diagram of an apparatus 1400 for transmitting signals in accordance with another embodiment of the present application. The device 1400 can be a terminal device.

It should be understood that the apparatus 1400 may correspond to a terminal device in each method embodiment, and may have any function of the terminal device in the method.

As shown in FIG. 14, the apparatus 1400 includes a processor 1410 and a transceiver 1420.

In one embodiment, the transceiver 1420 is configured to receive a first signal, where the first signal includes N signal sequences, at least two of the N signal sequences are different, and N is greater than or equal to 2. Positive integer

The processor 1410 is configured to perform time synchronization according to the first signal.

Optionally, the processor 1410 is specifically configured to determine a field timing and a frame timing according to the first signal sequence and the second signal sequence.

In another embodiment, the transceiver 1420 is configured to receive a second signal, where the second signal is used to identify an area identifier;

The processor 1410 is configured to perform area identification according to the second signal.

Optionally, the processor 1410 is further configured to identify a transmission unit structure type according to an interleaving sequence of the third signal sequence or the fourth signal sequence.

Optionally, the transceiver 1420 is specifically configured to: when the frequency resource of the area includes multiple sub-bands, receive the second signal on the first sub-band of the multiple sub-bands.

Optionally, the transceiver 1420 is specifically configured to receive the second signal in a low frequency band of the area when the area is a high-low frequency hybrid networking area.

Optionally, the transceiver 1420 is specifically configured to: when the frequency resource of the area includes multiple sub-bands, receive the first signal on each of the multiple sub-bands.

Optionally, the transceiver 1420 is specifically configured to receive the first signal in the low frequency band and the high frequency band of the area when the area is a high and low frequency hybrid networking area.

In another embodiment, the transceiver 1420 is configured to receive a first signal on each of a plurality of subbands of a frequency resource of a region, and receive a second signal on a first one of the plurality of subbands ;

The processor 1410 is configured to perform time synchronization according to the first signal, and identify an area identifier of the area according to the second signal.

Optionally, the processor 1410 is further configured to identify a transmission unit structure type according to the time domain transmission location of the first signal.

In another embodiment, the transceiver 1420 is configured to receive a first signal in a low frequency band of the high and low frequency hybrid networking area, receive a third signal in a high frequency band of the area, and receive a second frequency in a low frequency band of the area. signal;

The processor 1410 is configured to perform time synchronization in a low frequency band of the area according to the first signal, perform time synchronization in a high frequency band of the area according to the third signal, and identify an area identifier of the area according to the second signal. .

Optionally, the first signal is the same as the third signal.

Optionally, the processor 1410 is further configured to: identify a beam of a high frequency band of the region according to an offset between the signal sequences in the third signal; or identify a beam of a high frequency band of the region according to the third signal.

It should be understood that the processor 1310 and/or the processor 1410 in the embodiment of the present application may be implemented by a processing unit or a chip. Alternatively, the processing unit may be composed of multiple units in the implementation process.

It should be understood that the transceiver 1320 or the transceiver 1420 in the embodiment of the present application may be implemented by a transceiver unit or a chip. Alternatively, the transceiver 1320 or the transceiver 1420 may be constituted by a transmitter or a receiver, or may be received by a transmitting unit or a receiver. Unit composition.

Optionally, the transceiver node or the terminal device may further include a memory, where the memory may store program code, and the processor calls the program code stored in the memory to implement a corresponding function of the transceiver node or the terminal device.

The device of the embodiment of the present invention may be a Field-Programmable Gate Array (FPGA), may be an Application Specific Integrated Circuit (ASIC), or may be a System on Chip (SoC). It can also be a Central Processor Unit (CPU), a Network Processor (NP), a Digital Signal Processor (DSP), or a Microcontroller (Micro). The Controller Unit (MCU) can also be a Programmable Logic Device (PLD) or other integrated chip.

The embodiment of the present application further includes a communication system, including the transceiver node in the foregoing transceiver node embodiment and the terminal device in the terminal device embodiment.

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

A person skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present application.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the 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 standalone product, may be stored in a computer readable storage medium. Based on this understanding, the technical solution of the present application is essentially Or a portion contributing to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for causing a computer device (may be a personal computer, server, or transceiver node, etc.) performing all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

The foregoing is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any equivalents can be easily conceived by those skilled in the art within the technical scope disclosed in the present application. Modifications or substitutions are intended to be included within the scope of the present application. Therefore, the scope of protection of this application should be determined by the scope of protection of the claims.

Claims

A method for transmitting a signal, comprising:

Generating a first signal, wherein the first signal comprises N signal sequences, at least two of the N signal sequences are different, N is a positive integer greater than or equal to 2, and the first signal is used The terminal device performs time synchronization only according to the first signal;

Sending the first signal.
The method of claim 1 wherein said N signal sequences are transmitted in different N time units, said different N time units being separated by one or more predetermined offset values.
The method according to claim 1 or 2, wherein N is 2, the N signal sequences are a first signal sequence and a second signal sequence, and the first signal sequence and the second signal sequence are mutually common yoke.
The method of claim 3, wherein the transmitting the first signal comprises:

Transmitting the first signal sequence in a first time unit, transmitting the second signal sequence in a second time unit, the first time unit being spaced apart from the second time unit by one or more predetermined offset values .
The method according to claim 4, wherein the first time unit is a first subframe of a radio frame, and the second time unit is a second subframe of the radio frame, the first sub-frame The frame is separated from the second subframe by half a radio frame.
The method according to any one of claims 1 to 5, wherein the N signal sequences are ZC sequences.
The method according to any one of claims 1 to 6, wherein the method further comprises:

Generating a second signal, wherein the second signal is used to identify an area identifier;

Sending the second signal.
The method according to claim 7, wherein said second signal comprises a third signal sequence or a fourth signal sequence, said third signal sequence and said fourth signal sequence being comprised of a first m sequence and a second The m sequences are interleaved according to different interleaving sequences.
The method of claim 8 wherein said first m sequence and said second m sequence are each 31 in length.
Method according to claim 8 or 9, characterized in that said interleaving order is used to identify the transmission unit structure type.
The method according to any one of claims 7 to 10, characterized in that the time-domain transmission positions of the second signals are the same for different transmission unit structure types.
The method according to any one of claims 7 to 11, wherein the transmitting the second signal comprises:

When the frequency resource of the region includes a plurality of subbands, the second signal is transmitted on a first one of the plurality of subbands.
The method according to any one of claims 7 to 12, wherein the transmitting the second signal comprises:

When the area is a high-low frequency hybrid networking area, the second signal is transmitted in a low frequency band of the area.
The method according to any one of claims 7 to 13, wherein the transmitting the second signal comprises:

The second signal is transmitted through a partial transceiver node TRP of the area.
The method according to any one of claims 1 to 14, wherein the transmitting the first signal comprises:

The first signal is transmitted on each of the plurality of subbands when the frequency resource of the region includes a plurality of subbands.
The method according to any one of claims 1 to 15, wherein the transmitting the first signal comprises:

When the area is a high-low frequency hybrid networking area, the first signal is transmitted in a low frequency band and a high frequency band of the area.
The method according to claim 16, wherein said transmitting said first signal comprises:

Transmitting the same first signal through different beams in a high frequency band of the region, wherein offsets between signal sequences in the first signal transmitted by different beams are different, and the offset is used to identify Beam.
The method according to claim 16, wherein said transmitting said first signal comprises:

In the high frequency band of the area, different first signals are transmitted through different beams, the first signals being used to identify beams.
The method according to any one of claims 1 to 18, wherein the transmitting the first signal comprises:

The first signal is transmitted through all TRPs of the area.
The method according to any one of claims 16 to 19, characterized in that, for different transmission unit structure types, the time domain transmission position of the first signal is different, and the time domain transmission position of the first signal is used. To identify the transmission unit structure type.
A method for transmitting a signal, comprising:

Transmitting a first signal on each of the plurality of subbands of the frequency resource of the area, where the first signal is used by the terminal device for time synchronization;

Transmitting a second signal on a first one of the plurality of sub-bands, the second signal being used to identify an area identification of the area.
The method according to claim 21, wherein for different transmission unit structure types, a time domain transmission location of the first signal is different, and a time domain transmission location of the first signal is used to identify a transmission unit structure type .
The method according to claim 21 or 22, wherein the number of the first sub-bands is greater than or equal to 1, and less than the number of the plurality of sub-bands.
A method for transmitting a signal, comprising:

Transmitting a first signal in a low frequency band of the high and low frequency hybrid networking area, where the first signal is used by the terminal device to perform time synchronization in a low frequency band of the area, and a third signal is sent in a high frequency band of the area, The third signal is used by the terminal device to perform time synchronization in a high frequency band of the area;

A second signal is transmitted in a low frequency band of the area, the second signal being used to identify an area identification of the area.
The method of claim 24 wherein said first signal and said third signal are the same.
The method according to claim 24, wherein the third signal is a primary synchronization signal PSS in a Long Term Evolution (LTE) system.
The method according to claim 24, wherein said transmitting a third signal in a high frequency band of said area comprises:

Transmitting the same third signal through different beams in a high frequency band of the region, wherein different waves The offset between the signal sequences in the third signal transmitted by the beam is different, the offset being used to identify the beam.
The method according to claim 24, wherein said transmitting a third signal in a high frequency band of said area comprises:

In the high frequency band of the region, different first signals are transmitted through different beams, and the third signals are used to identify beams.
The method according to any one of claims 24 to 28, characterized in that, for different transmission unit structure types, the time domain transmission position of the third signal is different, and the time domain transmission position of the third signal is used. To identify the transmission unit structure type.
A method for transmitting a signal, comprising:

Receiving a first signal, where the first signal includes N signal sequences, at least two of the N signal sequences are different, and N is a positive integer greater than or equal to 2;

Time synchronization is performed according to the first signal.
The method according to claim 30, wherein N is 2, and said N signal sequences are a first signal sequence and a second signal sequence, said first signal sequence and said second signal sequence being conjugate to each other.
The method according to claim 31, wherein said performing time synchronization according to said first signal comprises:

The half frame timing and the frame timing are determined based on the first signal sequence and the second signal sequence.
The method according to any one of claims 30 to 32, wherein the N signal sequences are ZC sequences.
The method according to any one of claims 30 to 33, wherein the method further comprises:

Receiving a second signal, wherein the second signal is used to identify an area identifier;

Area identification is performed based on the second signal.
The method according to claim 34, wherein said second signal comprises a third signal sequence or a fourth signal sequence, said third signal sequence and said fourth signal sequence being comprised of a first m sequence and a second The m sequences are interleaved according to different interleaving sequences.
The method of claim 35 wherein said first m sequence and said second m sequence are each 31 in length.
The method of claim 35 or 36, wherein the method further comprises:

The transmission unit structure type is identified according to an interleaving order of the third signal sequence or the fourth signal sequence.
The method according to any one of claims 34 to 37, wherein the receiving the second signal comprises:

The second signal is received on a first one of the plurality of subbands when the frequency resource of the region includes a plurality of subbands.
The method according to any one of claims 34 to 38, wherein the receiving the second signal comprises:

When the area is a high-low frequency hybrid networking area, the second signal is received in a low frequency band of the area.
The method according to any one of claims 30 to 39, wherein the receiving the first signal comprises:

The first signal is received on each of the plurality of subbands when the frequency resource of the region includes a plurality of subbands.
The method according to any one of claims 30 to 40, wherein the receiving the first signal comprises:

When the area is a high-low frequency hybrid networking area, the first signal is received in a low frequency band and a high frequency band of the area.
The method of claim 40 or 41, wherein the method further comprises:

The transmission unit structure type is identified according to the time domain transmission location of the first signal.
A method for transmitting a signal, comprising:

Receiving a first signal on each of a plurality of subbands of a frequency resource of the region;

Performing time synchronization according to the first signal;

Receiving a second signal on a first one of the plurality of sub-bands;

Identifying an area identifier of the area based on the second signal.
The method of claim 43 wherein the method further comprises:

The transmission unit structure type is identified according to the time domain transmission location of the first signal.
The method according to claim 43 or 44, wherein the number of the first sub-bands is greater than or equal to 1, and less than the number of the plurality of sub-bands.
A method for transmitting a signal, comprising:

Receiving the first signal in a low frequency band of the high and low frequency hybrid networking area;

Performing time synchronization in a low frequency band of the region according to the first signal;

Receiving a third signal in a high frequency band of the area;

Performing time synchronization in a high frequency band of the region according to the third signal;

Receiving a second signal in a low frequency band of the area;

Identifying an area identifier of the area based on the second signal.
The method of claim 46 wherein said first signal and said third signal are the same.
The method according to claim 46, wherein said third signal is a primary synchronization signal PSS in a Long Term Evolution (LTE) system.
The method of claim 46, wherein the method further comprises:

A beam of a high frequency band of the region is identified based on an offset between signal sequences in the third signal.
The method of claim 46, wherein the method further comprises:

A beam of a high frequency band of the region is identified based on the third signal.
The method according to any one of claims 46 to 50, wherein the method further comprises:

The transmission unit structure type is identified according to the time domain transmission location of the third signal.
An apparatus for transmitting a signal, comprising: a processor and a transceiver; wherein

The processor is configured to generate a first signal, where the first signal includes N signal sequences, at least two of the N signal sequences are different, and N is a positive integer greater than or equal to 2, Decoding the first signal for the terminal device to perform time synchronization only according to the first signal;

The transceiver is configured to send the first signal.
The apparatus of claim 52 wherein said N signal sequences are transmitted in different N time units, said different N time units being separated by one or more predetermined offset values.
The apparatus according to claim 52 or 53, wherein N is 2, and said N signal sequences are a first signal sequence and a second signal sequence, said first signal sequence and said second signal sequence being mutually common yoke.
The apparatus according to claim 54, wherein said transceiver is specifically for use at a first time Transmitting the first signal sequence in a unit, and transmitting the second signal sequence in a second time unit, the first time unit being spaced apart from the second time unit by one or more predetermined offset values.
The apparatus according to any one of claims 52 to 55, wherein the N signal sequences are ZC sequences.
The apparatus according to any one of claims 52 to 56, wherein the processor is further configured to generate a second signal, wherein the second signal is used to identify an area identifier;

The transceiver is further configured to send the second signal.
The apparatus according to claim 57, wherein said second signal comprises a third signal sequence or a fourth signal sequence, said third signal sequence and said fourth signal sequence being comprised of a first m sequence and a second The m sequences are interleaved according to different interleaving sequences.
The apparatus of claim 58, wherein said interleaving order is for identifying a transmission unit structure type.
The apparatus according to any one of claims 57 to 59, wherein the time domain transmission locations of the second signals are the same for different transmission unit structure types.
The apparatus according to any one of claims 57 to 60, wherein the transceiver is specifically configured to: when a frequency resource of a region includes a plurality of subbands, a first subband of the plurality of subbands Transmitting the second signal.
The apparatus according to any one of claims 57 to 61, wherein the transceiver is specifically configured to: when the area is a high-low frequency hybrid networking area, send the number in a low frequency band of the area Two signals.
The apparatus according to any one of claims 52 to 62, wherein the transceiver is specifically configured to: when a frequency resource of a region includes a plurality of subbands, on each of the plurality of subbands Sending the first signal.
The apparatus according to any one of claims 52 to 63, wherein the transceiver is specifically configured to transmit in a low frequency band and a high frequency band of the area when the area is a high and low frequency hybrid networking area Said the first signal.
The device according to claim 64, wherein the transceiver is specifically configured to send the same first signal through different beams in a high frequency band of the area, where different beams are sent The offset between the signal sequences in the first signal is different, and the offset is used to identify the beam; or,

In the high frequency band of the area, different first signals are transmitted through different beams, the first signals being used to identify beams.
The apparatus according to any one of claims 63 to 65, wherein, for different transmission unit structure types, a time domain transmission position of the first signal is different, and a time domain transmission position of the first signal is used. To identify the transmission unit structure type.
An apparatus for transmitting a signal, comprising: a processor and a transceiver; wherein

The processor is configured to generate a first signal and a second signal;

The transceiver is configured to send the first signal on each of a plurality of subbands of a frequency resource of a region, where the first signal is used by the terminal device for time synchronization, and the first of the plurality of subbands The second signal is transmitted on a subband, and the second signal is used to identify an area identifier of the area.
The apparatus according to claim 67, wherein, for different transmission unit structure types, a time domain transmission position of said first signal is different, and a time domain transmission position of said first signal is used to identify a transmission unit structure type .
The apparatus according to claim 67 or 68, wherein the number of the first sub-bands is greater than or equal to 1, and less than the number of the plurality of sub-bands.
An apparatus for transmitting a signal, characterized in that it is applied to a high-low frequency hybrid networking area, wherein a first signal and a second signal are sent in a low frequency band of the area, and the first signal is used by a terminal device to perform Time synchronization in a low frequency band of the area, the second signal being used by the terminal device to identify an area identifier of the area;

The device includes a processor and a transceiver; wherein

The processor is configured to generate a third signal;

The transceiver is configured to send the third signal in a high frequency band of the area, where the third signal is used by the terminal device to perform time synchronization in a high frequency band of the area.
The apparatus of claim 70 wherein said first signal and said third signal are the same.
The device according to claim 70, wherein the transceiver is configured to send the same third signal through different beams in a high frequency band of the area, where different beams are sent The offset between the signal sequences in the third signal is different, and the offset is used to identify the beam; or,

In the high frequency band of the region, different first signals are transmitted through different beams, and the third signals are used to identify beams.
The apparatus according to any one of claims 70 to 72, wherein, for different transmission unit structure types, a time domain transmission position of the third signal is different, and a time domain transmission position of the third signal is used. To identify the transmission unit structure type.
An apparatus for transmitting a signal, comprising: a processor and a transceiver; wherein

The transceiver is configured to receive a first signal, where the first signal includes N signal sequences, at least two of the N signal sequences are different, and N is a positive integer greater than or equal to 2;

The processor is configured to perform time synchronization according to the first signal.
The apparatus according to claim 74, wherein N is 2, and said N signal sequences are a first signal sequence and a second signal sequence, said first signal sequence and said second signal sequence being conjugate to each other.
The apparatus according to claim 75, wherein said processor is specifically configured to determine a field timing and a frame timing based on said first signal sequence and said second signal sequence.
The apparatus according to any one of claims 74 to 76, wherein the transceiver is further configured to receive a second signal, wherein the second signal is used to identify an area identifier;

The processor is further configured to perform area identification according to the second signal.
The apparatus according to claim 77, wherein said second signal comprises a third signal sequence or a fourth signal sequence, said third signal sequence and said fourth signal sequence being comprised of a first m sequence and a second The m sequences are interleaved according to different interleaving sequences.
The apparatus according to claim 78, wherein the processor is further configured to identify a transmission unit structure type according to an interleaving order of the third signal sequence or the fourth signal sequence.
The apparatus according to any one of claims 77 to 79, wherein the transceiver is specifically configured to: when a frequency resource of a region includes a plurality of subbands, a first subband of the plurality of subbands Receiving the second signal.
The apparatus according to any one of claims 77 to 80, wherein the transceiver is specifically configured to receive the first frequency in a low frequency band of the area when the area is a high and low frequency hybrid networking area Two signals.
Apparatus according to any one of claims 74 to 81, wherein said transceiver is specifically used And, when the frequency resource of the region includes multiple subbands, the first signal is received on each of the plurality of subbands.
The apparatus according to any one of claims 74 to 82, wherein the transceiver is specifically configured to receive a low frequency band and a high frequency band in the area when the area is a high and low frequency hybrid networking area. Said the first signal.
An apparatus for transmitting a signal, comprising: a processor and a transceiver; wherein

The transceiver is configured to receive a first signal on each of a plurality of subbands of a frequency resource of a region, and receive a second signal on a first one of the plurality of subbands;

The processor is configured to perform time synchronization according to the first signal, and identify an area identifier of the area according to the second signal.
The apparatus according to claim 84, wherein the processor is further configured to identify a transmission unit structure type according to a time domain transmission location of the first signal.
An apparatus for transmitting a signal, comprising: a processor and a transceiver; wherein

The transceiver is configured to receive a first signal in a low frequency band of the high and low frequency hybrid networking area, receive a third signal in a high frequency band of the area, and receive a second signal in a low frequency band of the area;

The processor is configured to perform time synchronization in a low frequency band of the area according to the first signal, perform time synchronization in a high frequency band of the area according to the third signal, and identify the second signal according to the second signal. The area identifier of the area.
The apparatus of claim 86 wherein said first signal and said third signal are the same.
The apparatus according to claim 86, wherein the processor is further configured to identify a beam of a high frequency band of the region according to an offset between signal sequences in the third signal; or, according to the The third signal identifies a beam of the high frequency band of the region.
A system, comprising:

a device for transmitting a signal, the device for transmitting the signal, the device for transmitting a signal according to any one of claims 70 to 73;

a second transmission signal device, comprising a processor and a transceiver; wherein

The processor is configured to generate a first signal and a second signal, where the first signal is used by the terminal device to perform time synchronization in a low frequency band of the high and low frequency hybrid networking area, and the second signal is used to identify the area Area identification;

The transceiver is configured to transmit the first signal and the second signal in a low frequency band of the area.