CN107623935B

CN107623935B - Access signal sending and receiving method and related equipment

Info

Publication number: CN107623935B
Application number: CN201610563136.2A
Authority: CN
Inventors: 陈润华; 高秋彬; 拉盖施; 苏昕; 李辉; 黄秋萍; 宋扬; 李传军; 王蒙军; 杨宇
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2016-07-15
Filing date: 2016-07-15
Publication date: 2020-02-04
Anticipated expiration: 2036-07-15
Also published as: WO2018010509A1; CN107623935A

Abstract

The invention discloses an access signal sending and receiving method and related equipment, which are used for providing a solution for realizing the access process of UE in a future communication system. The method comprises the following steps: the method comprises the steps that a transmitting device generates at least one access signal, wherein each access signal has different signal characteristics, and the signal characteristics comprise at least one of time domain transmission positions, frequency domain transmission positions and code domain characteristics; the transmitting device transmits at least one of the access signals.

Description

Access signal sending and receiving method and related equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an access signal transmitting and receiving method and a related device.

Background

A wireless communication system includes a network station (node) and a User Equipment (UE). Downlink transmission and uplink transmission are performed between a network station and a UE in a wireless communication system. One or more network stations are included in a wireless communication system.

To access the network, the UE must find at least one network station after being powered on and access the network through the network station. If a wireless communication system includes multiple network sites, the UE may be accessed through any one of the multiple network sites. For example, a network station in a cellular network may be configured as a Cell (Cell), each Cell independently transmitting signals, and a UE detecting signals of different cells and selecting a Cell to access the network, which is called initial access.

In a Long Term Evolution (LTE) system, initial Synchronization information is provided by a Synchronization (SYNC) Signal, which includes two parts, a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS), respectively. And the UE and the cell realize frequency domain and time domain synchronization through the PSS/SSS. Each cell transmits a respective PSS/SSS. In the initial synchronization process, after the UE finds the PSS/SSS of each cell, it selects a cell for access, for example, the UE selects the cell with the best signal for access according to the PSS/SSS of each cell.

The bandwidth of the PSS/SSS in the LTE system is 6 Physical Resource Blocks (PRBs), i.e., 900KHz, and the PSS/SSS is limited to be transmitted at the center of the system bandwidth of each cell, and each cell transmits one PSS/SSS. There are many possible values for the system bandwidth of a cell, including 1.4MHz, 5MHz, 10MHz, 15MHz, and 20 MHz. The UE does not know the system bandwidth of the cell and the location of the center of the frequency domain of the cell before performing cell access. The UE searches for the center frequency point of all possible cells with 100kHz as accuracy. If the UE detects a PSS/SSS, the UE successfully detects the center frequency point of the cell, and then the UE demodulates a master information block (master information block) of the cell to obtain information carrying system bandwidth of the cell, so that the starting position and the ending position of the cell frequency can be obtained.

In a conventional wireless communication system, a network station may have one or more transmit antennas, and the PSS/SSS may be shaped and transmitted over multiple transmit antennas. Since the PSS/SSS is designed to be accessible to all UEs in the cell, the design of the beamforming scheme should ensure wide beamforming to ensure that the PSS/SSS can be received by all UEs in the cell. Therefore, one cell transmits one PSS/SSS.

Each Cell in a cellular system has an independent Cell identity (Cell ID), and other signals within the Cell are a function of the Cell identity of the Cell. For example, in LTE synchronization signal transmission, the base sequence (basesequence) of PSS/SSS is a function of cell identity. And the UE blindly detects the PSS/SSS of each cell and obtains the cell identification of the cell according to the PSS/SSS of the cell. Specifically, the PSS base sequence is a function of the first ID (denoted nID1) and the SSS base sequence is a function of the second ID (denoted nID2), then the Cell identity of the Cell is derived from the first and second IDs, denoted Cell ID ═ f (nID1, nID 2).

In a conventional wireless communication system, the coverage area of a cell is equivalent to the coverage area of a Transmit/Receive Point (TRP), which is equivalent to a cell having a TRP.

The network deployment of future communication systems is more flexible, one cell may have one or more TRPs, each covering a smaller range, and multiple TRPs jointly provide coverage of the whole cell. There will be a possible case where the UE is initially synchronized and system accessed from one TRP, not from all TRPs. In addition, future communication systems may use a large number of antenna elements, denoted massive Multiple Input Multiple Output (MIMO), which generates narrow beams (beams) by antenna shaping, and one TRP generates many beams, each pointing in a different direction.

How to implement the access procedure of the UE in the future communication system is a problem to be solved.

Disclosure of Invention

The embodiment of the invention provides an access signal sending and receiving method and related equipment, which are used for providing a solution for realizing the access process of UE in a future communication system.

The embodiment of the invention provides the following specific technical scheme:

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

the method comprises the steps that a transmitting device generates at least one access signal, wherein each access signal has different signal characteristics, and the signal characteristics comprise at least one of time domain transmission positions, frequency domain transmission positions and code domain characteristics;

the transmitting device transmits at least one of the access signals.

In a possible embodiment, the access signal includes a first component and at least one second component, the first components of different access signals are the same, and at least one of the second components of different access signals is different.

In a possible embodiment, the access signal is determined by the first identifier and the at least one second identifier according to a preset rule.

In a possible embodiment, the preset rule is used to determine a mapping relationship between the first identifier and the second identifier and a signal characteristic of an access signal.

In a possible implementation manner, the sending device sends first indication information semi-statically or dynamically, where the first indication information indicates a value range of the first identifier; and/or the presence of a gas in the gas,

and the sending equipment sends second indication information in a semi-static or dynamic state, wherein the second indication information indicates the value range of the second identifier.

In a possible implementation manner, if the number of the access signals is greater than one, different access signals correspond to the same first identifier, and at least one of the second identifiers corresponding to at least one of the access signals is different from the second identifiers corresponding to other access signals.

In a possible embodiment, the code domain characteristic comprises at least one of a base sequence, a scrambling sequence and a spreading sequence.

In a possible embodiment, the access signal is any one of the following:

a downlink synchronization signal;

downlink system access signals;

sending a special signal of a receiving point TRP;

a beam-specific signal;

carrying a signal of a System Information Block (SIB), wherein the SIB carries a cell-specific signal or a user-specific signal;

an uplink random access signal;

a signal having a transform characteristic in the time domain or the frequency domain.

In a possible embodiment, after the sending device sends at least one of the access signals, the method further includes:

the sending device receives a feedback signal returned by the receiving device, wherein the feedback signal carries indication information of an access signal selected by the receiving device from all received access signals.

In a possible implementation manner, the indication information of the access signal carried in the feedback signal is: and the receiving equipment selects the indication information of the optimal access signal from all the received access signals.

In a possible implementation, the bit number of the feedback signal is pre-configured;

alternatively, the first and second electrodes may be,

the number of bits of the feedback signal is notified to the receiving device by the transmitting device.

In a possible embodiment, after the sending device receives the feedback signal returned by the receiving device, the method further includes:

and the sending equipment determines the signal characteristics of the access signals indicated by the indication information of the access signals carried in the feedback signals, and sends the signals carrying the data information according to the determined signal characteristics.

In a second aspect, an embodiment of the present invention provides an access signal receiving method, including:

the receiving device receives at least one access signal, wherein the signal characteristics of the access signal comprise at least one of time domain transmission position, frequency domain transmission position and code domain characteristics, and each access signal has different signal characteristics;

the receiving device processes the at least one access signal.

In a possible implementation manner, receiving equipment receives first indication information, where the first indication information indicates a value range of the first identifier, and the first indication information is semi-static or dynamic information; and/or the presence of a gas in the gas,

and receiving second indication information by the receiving equipment, wherein the second indication information indicates the value range of the second identifier, and the second indication information is semi-static or dynamic information.

In a possible embodiment, the access signal is any one of the following:

a downlink synchronization signal;

downlink system access signals;

sending a special signal of a receiving point TRP;

a beam-specific signal;

an uplink random access signal;

In a possible embodiment, the processing, by the receiving device, of the at least one access signal includes:

the receiving equipment selects one access signal from all the received access signals and returns a feedback signal to the sending equipment, wherein the feedback signal carries the indication information of the selected access signal.

In a possible embodiment, the selected access signal is the optimal access signal.

alternatively, the first and second electrodes may be,

In a possible implementation, after the receiving device returns a feedback signal to the sending device, the method further includes:

and the receiving device receives a signal carrying data information sent by the sending device, wherein the signal carrying data information is sent according to the determined signal characteristic after the sending device determines the signal characteristic of the access signal indicated by the indication information of the access signal carried in the feedback signal.

In a third aspect, an embodiment of the present invention provides a sending apparatus, including:

a processing module configured to generate at least one access signal, wherein each access signal has different signal characteristics, and the signal characteristics include at least one of a time-domain transmission position, a frequency-domain transmission position, and a code-domain characteristic;

a sending module, configured to send at least one of the access signals.

In a possible embodiment, the access signal is determined by the first identifier and the at least one second identifier according to a preset rule. The preset rule is used for determining a mapping relation between the first identifier and the second identifier and signal characteristics of an access signal.

In a possible implementation, the sending module is further configured to: semi-statically or dynamically sending first indication information, wherein the first indication information indicates the value range of the first identifier; and/or semi-statically or dynamically sending second indication information, wherein the second indication information indicates the value range of the second identifier.

In a possible embodiment, the access signal is any one of the following:

a downlink synchronization signal;

downlink system access signals;

sending a special signal of a receiving point TRP;

a beam-specific signal;

an uplink random access signal;

In a possible embodiment, the system further includes a receiving module, configured to: receiving a feedback signal returned by a receiving device, wherein the feedback signal carries indication information of an access signal selected by the receiving device from all received access signals.

In a possible implementation, the bit number of the feedback signal is pre-configured; or the number of bits of the feedback signal is notified to the receiving device by the transmitting device.

In a possible embodiment, the processing module is further configured to: determining a signal characteristic of an access signal indicated by indication information of the access signal carried in the feedback signal;

the sending module is further configured to: and sending a signal carrying data information according to the signal characteristics determined by the processing module.

In a fourth aspect, an embodiment of the present invention provides a receiving apparatus, including:

a receiving module, configured to receive at least one access signal, where a signal characteristic of the access signal includes at least one of a time-domain transmission position, a frequency-domain transmission position, and a code-domain characteristic, and each access signal has a different signal characteristic;

a processing module for processing the at least one access signal.

In a possible implementation, the receiving module is further configured to:

receiving first indication information, wherein the first indication information indicates a value range of the first identifier, and the first indication information is semi-static or dynamic information; and/or the presence of a gas in the gas,

and receiving second indication information, wherein the second indication information indicates the value range of the second identifier, and the second indication information is semi-static or dynamic information.

In a possible embodiment, the access signal is any one of the following:

a downlink synchronization signal;

downlink system access signals;

sending a special signal of a receiving point TRP;

a beam-specific signal;

an uplink random access signal;

In a possible embodiment, the processing module is specifically configured to: selecting one access signal from all received access signals;

further comprising a sending module for: and returning a feedback signal to the sending equipment, wherein the feedback signal carries the indication information of the access signal selected by the processing module.

In a possible implementation, the receiving module is further configured to:

after the sending module returns a feedback signal to the sending device, receiving a signal carrying data information sent by the sending device, wherein the signal carrying data information is sent according to the determined signal characteristic after the sending device determines the signal characteristic of an access signal indicated by indication information of the access signal carried in the feedback signal.

In a fifth aspect, an embodiment of the present invention provides a transmitting apparatus, including a processor, a memory, and a transceiver, where the transceiver is configured to receive and transmit data under control of the processor, the memory stores a preset program, and the processor reads the program in the memory and executes the following processes according to the program:

generating at least one access signal, wherein each of the access signals has different signal characteristics including at least one of a time domain transmission position, a frequency domain transmission position, and a code domain characteristic;

instructing the transceiver to transmit at least one of said access signals.

In a possible implementation manner, the transceiver semi-statically or dynamically sends first indication information, where the first indication information indicates a value range of the first identifier; and/or semi-statically or dynamically sending second indication information, wherein the second indication information indicates the value range of the second identifier.

In a possible embodiment, the access signal is any one of the following:

a downlink synchronization signal;

downlink system access signals;

sending a special signal of a receiving point TRP;

a beam-specific signal;

an uplink random access signal;

In a possible embodiment, the transceiver is further configured to: receiving a feedback signal returned by a receiving device, wherein the feedback signal carries indication information of an access signal selected by the receiving device from all received access signals.

In a possible embodiment, the processor is further configured to: determining a signal characteristic of an access signal indicated by indication information of the access signal carried in the feedback signal; the transceiver transmits a signal carrying data information according to the determined signal characteristics.

In a sixth aspect, an embodiment of the present invention provides a receiving device, where the receiving device includes a processor, a memory, and a transceiver, where the transceiver receives and transmits data under the control of the processor, the memory stores a preset program, and the processor reads the program in the memory, and executes the following processes according to the program:

receiving, by a transceiver, at least one access signal, wherein signal characteristics of the access signal include at least one of time domain transmission position, frequency domain transmission position, and code domain characteristics, each of the access signals having different signal characteristics;

processing the at least one access signal.

In a possible implementation manner, the transceiver is further configured to receive first indication information, where the first indication information indicates a value range of the first identifier, and the first indication information is semi-static or dynamic information; and/or receiving second indication information, wherein the second indication information indicates the value range of the second identifier, and the second indication information is semi-static or dynamic information.

In a possible embodiment, the access signal is any one of the following:

a downlink synchronization signal;

downlink system access signals;

sending a special signal of a receiving point TRP;

a beam-specific signal;

an uplink random access signal;

In a possible embodiment, the processor selects one access signal from all received access signals; and returning a feedback signal to the sending equipment through the transceiver, wherein the feedback signal carries the indication information of the selected access signal.

In a possible implementation manner, after a feedback signal is returned to the sending device by the transceiver, the processor receives, by the transceiver, a signal carrying data information sent by the sending device, where the signal carrying data information is sent according to the determined signal characteristic after the sending device determines the signal characteristic of an access signal indicated by indication information of an access signal carried in the feedback signal.

Based on the above technical solution, in the embodiment of the present invention, the sending device sends at least one access signal, each access signal has different signal characteristics, and the signal characteristics include at least one of a time domain sending position, a frequency domain sending position, and a code domain characteristic, so that different access signals can be distinguished according to the signal characteristics of the access signals, and a solution is provided for implementing access of the UE in a future communication system.

Drawings

Fig. 1 is a schematic diagram of an access signal transmission process according to an embodiment of the present invention;

fig. 2 is a schematic diagram of an access signal receiving process according to an embodiment of the present invention;

FIG. 3 is a diagram of a communication system architecture in accordance with an embodiment of the present invention;

FIG. 4 is a schematic diagram of frequency-domain transmission positions of different SYNCs in the embodiment of the present invention;

FIG. 5 is a schematic diagram of time-domain transmission positions of different SYNCs in the embodiment of the present invention;

FIG. 6 is a diagram illustrating the transmission of an access signal comprising two components according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a transmitting device in an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a receiving device in an embodiment of the present invention;

fig. 9 is a schematic structural diagram of another transmitting device in the embodiment of the present invention;

fig. 10 is a schematic structural diagram of another receiving device in the embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In future communication systems, one cell may have one or more TRPs, each covering a smaller area, and multiple TRPs jointly provide coverage of the entire cell. The UE may perform initial synchronization and system access from one of the TRPs. Alternatively, future communication systems may use massive MIMO, beam is generated by antenna shaping, and one TRP generates many beams, each pointing in a different direction. The UE may perform initial synchronization and system access through one of the beams. In the deployment scenario, multiple identifiers are required, each identifier is allocated to a different TRP or beam, and the UE distinguishes the TRP or beam through the different identifiers.

In order to solve the access problem of the UE in the future communication system, the embodiment of the present invention provides an access signal transmission method, and the main idea is: different Access signals corresponding to TRP or beam are distinguished by the Signal characteristics of the Access Signal (AS). For example, the signal characteristics of the access signals corresponding to different TRPs are different, or the signal characteristics of the access signals corresponding to different beams are different.

The access signal in the embodiment of the present invention is a broad name, and is used to refer to a sum of signals required by the terminal to access the network, and may include one signal or a plurality of signals. The access signal may be used to perform one or more functions, such as cell synchronization, time or frequency domain synchronization, cell system information reception, and so on. It should be noted that the functions that can be realized by the access signal in the embodiment of the present invention are not limited to a certain function listed here, and the access signal in the embodiment of the present invention is not limited to a specific signal.

In the embodiment of the present invention, the sending of the access signal may be in an uplink transmission process or a downlink transmission process, where the uplink transmission process refers to sending from the network device to the terminal, and the downlink transmission process refers to sending from the terminal to the network device.

In the first embodiment of the present invention, as shown in fig. 1, the sending process of the access signal is specifically as follows:

step 101: the transmitting device generates at least one access signal, wherein each access signal has different signal characteristics including at least one of a time domain transmission position, a frequency domain transmission position, and a code domain characteristic.

Wherein the code domain characteristic comprises at least one of a base Sequence (base Sequence), a scrambling Sequence (scrambling Sequence) and a spreading Sequence (spreading Sequence).

In one possible embodiment, the access signal comprises a first component and at least one second component, the first components of different access signals being the same, and the at least one second component of different access signals being different. I.e. at least one of the second components of any one access signal is different from the second components of the other access signals.

For example, the first component of the first access signal is the same as the first component of the second access signal, the first access signal and the second access signal each include a plurality of second components, and one of the second components of the first access signal is different from the second component of the second access signal.

Wherein, at least one second component of different access signals is different, which indicates that the frequency domain sending position, the time domain sending position or the code domain characteristics of different access signals are different.

In one possible embodiment, the access signal is determined by the first identifier and the at least one second identifier according to a preset rule. The preset rule is used for determining the mapping relation between the first identifier and the second identifier and the signal characteristics of the access signal.

For example, the access signal is a function of a Primary Identifier (PID) and at least one Secondary Identifier (SID), denoted AS f (PID, SID), which determines one or more of the signal characteristics of the access signal based on the PID and the at least one SID.

In implementation, different access signals may correspond to the same preset rule or different preset rules.

Specifically, the sending device sends first indication information to the receiving device in a semi-static or dynamic manner, wherein the first indication information indicates a value range of the first identifier; and/or the sending device sends second indication information to the receiving device in a semi-static or dynamic state, wherein the second indication information indicates the value range of the second identifier.

Specifically, if the number of the access signals is greater than one, different access signals correspond to the same first identifier, and at least one of at least one second identifier corresponding to at least two access signals is different. That is, at least one of the second identifiers corresponding to at least one access signal is different from the second identifiers corresponding to other access signals. In a specific embodiment, at least one of the second identifiers corresponding to any one of the access signals is different from the second identifiers corresponding to other access signals. Specifically, at least one of the second identifiers corresponding to the first access signal is different from the second identifier corresponding to the second access signal.

For example, each access signal corresponds to a first identifier and two second identifiers, the first identifiers corresponding to the two access signals are the same, and at least one of the two second identifiers corresponding to the two accesses is different, e.g., the second identifier 1 of the access signal 1 is different from the second identifier of the access signal 2.

In practice, the access signal includes, but is not limited to, any of the following:

a downlink Synchronization Signal (Synchronization Signal);

a downlink system Access Signal (also referred to as an Initial Access Signal);

a TRP-specific Signal (TRP-specific Signal);

beam-specific Signal (beam);

a signal carrying a System Information Block (SIB), wherein the SIB carries a cell-specific (cell-specific) signal or a user-specific (UE-specific) signal;

an uplink Random Access (Random Access) signal;

Step 102: the transmitting device transmits at least one access signal.

In a possible implementation manner, after the sending device sends at least one access signal, a feedback signal returned by the receiving device is received, where the feedback signal carries indication information of an access signal selected by the receiving device from all received access signals.

In an application, the indication information of the access signal may be an index of the access signal.

Optionally, the indication information of the access signal carried in the feedback signal is: and the receiving equipment selects the indication information of the optimal access signal from all the received access signals.

For example, the sending device sends the access signal corresponding to each TRP, and determines the optimal TRP according to the feedback signal returned by the receiving device; or the sending equipment sends the access signal corresponding to each beam respectively and determines the optimal beam according to the feedback signal returned by the receiving equipment.

Specifically, the bit number of the feedback signal is preconfigured; alternatively, the number of bits of the feedback signal is notified to the receiving device by the transmitting device, for example, the transmitting device indicates or implicitly notifies the receiving device of the number of bits of the feedback signal through a specific signal.

In one possible implementation, after the sending device receives the feedback signal returned by the receiving device, the sending device determines the signal characteristic of the access signal indicated by the indication information of the access signal carried in the feedback signal, and sends the signal carrying the data information according to the determined signal characteristic.

For example, after determining the signal characteristics of the access signal indicated by the indication information of the access signal according to the feedback signal, the sending device determines a TRP corresponding to the signal characteristics, and sends a signal carrying data information through the TRP; or, after determining the signal characteristic of the access signal indicated by the indication information of the access signal according to the feedback signal, the sending device determines the beam corresponding to the signal characteristic, and sends the signal carrying the data information through the beam.

In implementation, the receiving device has no prior information or prior information about the number and signal characteristics of the access signals transmitted by the transmitting device.

Based on the same inventive concept, in the second embodiment of the present invention, as shown in fig. 2, the receiving process of the access signal is specifically as follows:

step 201: the receiving device receives at least one access signal, wherein the signal characteristics of the access signal include at least one of a time domain transmission position, a frequency domain transmission position, and code domain characteristics, each access signal having different signal characteristics.

Wherein the code domain characteristic comprises at least one of a base sequence, a scrambling sequence, and a spreading sequence.

In one possible embodiment, the access signal comprises a first component and at least one second component, the first components of different access signals being the same, and the at least one second component of different access signals being different.

Specifically, the receiving device receives first indication information sent by the sending device, wherein the first indication information indicates a value range of a first identifier, and the first indication information is semi-static or dynamic information; and/or the receiving device receives second indication information sent by the sending device, wherein the second indication information indicates the value range of the second identifier, and the second indication information is semi-static or dynamic information.

Specifically, if the number of the access signals is greater than one, different access signals correspond to the same first identifier, and at least one of at least one second identifier corresponding to at least two access signals is different. That is, at least one of the second identifiers corresponding to at least one access signal is different from the second identifiers corresponding to other access signals. In a specific embodiment, at least one of the second identifiers corresponding to any one of the access signals is different from the second identifiers corresponding to other access signals.

a downlink synchronization signal;

downlink system access signals;

a TRP specific signal;

a beam-specific signal;

carrying SIB signal, wherein the SIB carries cell-specific signal or user-specific signal;

an uplink random access signal;

Step 202: the receiving device processes at least one access signal.

Specifically, the receiving device selects one access signal from all received access signals, and returns a feedback signal to the sending device, where the feedback signal carries indication information of the selected access signal.

Optionally, the selected access signal is an optimal access signal. Here, it is not limited to what kind of access signal is the optimal access signal, and the condition of the optimal access signal may be set according to a specific application scenario, for example, the optimal access signal may be determined according to signal strength.

In the implementation, the bit number of the feedback signal is configured in advance; alternatively, the number of bits of the feedback signal is notified to the receiving device by the transmitting device.

In a possible implementation manner, after the receiving device returns a feedback signal to the sending device, the receiving device receives a signal carrying data information sent by the sending device, where the signal carrying data information is sent according to the determined signal characteristic after the sending device determines the signal characteristic of an access signal indicated by indication information of an access signal carried in the feedback signal.

The following describes the transmission process of the access signal in the future communication system in two specific embodiments.

First embodiment

As shown in fig. 3, a communication system architecture is illustrated, wherein a wireless network coverage provides wide area coverage. The wireless network covers a plurality of cells, each covering a different area. A cell is defined as a wireless network object which can be used for accessing a network, and each cell corresponds to a unique cell identification respectively and is broadcast and transmitted in the coverage area of the cell. One cell may include at least one TRP, each TRP including N antennas, where N is greater than or equal to 1. The antennas on the TRP may perform beamforming, and the downlink signals are transmitted on the antennas after beamforming. Each beam provides wide or narrow coverage depending on the antenna data and the beamforming approach.

In this embodiment, in the downlink transmission process, a cell sends one or more access signals, where the access signals are downlink Synchronization Signals (SYNCs), and different SYNCs are sent by different TRPs.

In this embodiment, one SYNC corresponds to one PID and one SID, wherein different SYNCs correspond to the same PID and different SYNCs correspond to different SIDs, and the SID is identical to the identifier of the TRP.

In this embodiment, at least one of the different SYNCs has different signal characteristics, and the UE can distinguish the different SYNCs according to the signal characteristics of the SYNCs.

The signal characteristics of SYNC include, but are not limited to, any of:

first, at a frequency domain sending position, different SYNCs are transmitted at different frequency domain positions, as shown in fig. 4, a schematic diagram of frequency domain sending positions of different SYNCs is shown. There is a functional relationship between the SID and SYNC transmission positions in the frequency domain. The UE may obtain the SID information of the SYNC through the frequency domain transmission position of the SYNC, or obtain the frequency domain transmission position information of the SYNC through the SID information of the SYNC.

Secondly, the time domain sends the position, different SYNC are transmitted at different positions of the time domain, as shown in fig. 5, a schematic diagram of the time domain sending position of different SYNC is shown. There is a functional relationship between SID and SYNC at the transmission location in the time domain. The UE may obtain the information of the SID of the SYNC through the time domain sending position of the SYNC, or obtain the information of the time domain sending position of the SYNC through the information of the SID of the SYNC.

Thirdly, the code domain characteristics, the sequence information of different SYNCs and the SID have a functional relationship, and the UE can obtain the SID information of the SYNC through the sequence information of the SYNC, or obtain the sequence information of the SYNC through the SID information of the SYNC. For example, the basic sequence of different SYNC's is different; or, the scrambling code sequences of different SYNC are different; alternatively, the spreading sequences of different SYNC are different.

In a second embodiment of the present invention, the first embodiment,

the access signal comprises a plurality of components, at least one of the components being different and the same for different access signals, and at least one other component being different for different access signals. As shown in fig. 6, there are two components for each access signal, component 1 and component 2, respectively, where component 1 of different access signals is the same and component 2 of different access signals is different. The different components 2 of the access signal are transmitted at different frequency domain locations.

Based on the same inventive concept, a third embodiment of the present invention provides a sending device, and specific implementation of the sending device may refer to the description of the method embodiment, and repeated parts are not repeated, as shown in fig. 7, the sending device mainly includes:

a processing module 701, configured to generate at least one access signal, where each access signal has different signal characteristics, and the signal characteristics include at least one of a time-domain transmission position, a frequency-domain transmission position, and a code-domain characteristic;

a sending module 702, configured to send at least one of the access signals.

In a possible embodiment, if the number of the access signals is greater than one, different access signals correspond to the same first identifier, and at least one of at least one second identifier corresponding to at least two of the access signals is different. That is, at least one of the second identifiers corresponding to at least one access signal is different from the second identifiers corresponding to other access signals. In a specific embodiment, at least one of the second identifiers corresponding to any one of the access signals is different from the second identifiers corresponding to other access signals.

In a possible embodiment, the access signal is any one of the following:

a downlink synchronization signal;

downlink system access signals;

sending a special signal of a receiving point TRP;

a beam-specific signal;

an uplink random access signal;

In a possible implementation, the system further includes a receiving module 703 configured to: receiving a feedback signal returned by a receiving device, wherein the feedback signal carries indication information of an access signal selected by the receiving device from all received access signals.

In a possible embodiment, the processing module is further configured to: determining a signal characteristic of an access signal indicated by indication information of the access signal carried in the feedback signal; the sending module is further configured to: and sending a signal carrying data information according to the signal characteristics determined by the processing module.

Based on the same inventive concept, a receiving device is provided in a fourth embodiment of the present invention, and specific implementation of the receiving device may refer to the description of the method embodiment, and repeated details are not repeated, as shown in fig. 8, where the receiving device mainly includes:

a receiving module 801, configured to receive at least one access signal, where a signal characteristic of the access signal includes at least one of a time domain transmission position, a frequency domain transmission position, and a code domain characteristic, and each of the access signals has a different signal characteristic;

a processing module 802, configured to process the at least one access signal.

In a possible implementation, the receiving module is further configured to:

In a possible embodiment, different ones of the access signals correspond to the same first identifier, and at least one of the at least one second identifier corresponding to at least two of the access signals is different. That is, at least one of the second identifiers corresponding to at least one access signal is different from the second identifiers corresponding to other access signals. In a specific embodiment, at least one of the second identifiers corresponding to any one of the access signals is different from the second identifiers corresponding to other access signals.

In a possible embodiment, the access signal is any one of the following:

a downlink synchronization signal;

downlink system access signals;

sending a special signal of a receiving point TRP;

a beam-specific signal;

an uplink random access signal;

In a possible embodiment, the processing module is specifically configured to:

selecting one access signal from all received access signals;

also included is a sending module 803 for: and returning a feedback signal to the sending equipment, wherein the feedback signal carries the indication information of the access signal selected by the processing module.

In a possible implementation, the receiving module is further configured to:

Based on the same inventive concept, a fifth embodiment of the present invention provides a sending device, and specific implementation of the sending device may refer to the description of the method embodiment, and repeated parts are not repeated, as shown in fig. 9, the sending device mainly includes a processor 901, a memory 902, and a transceiver 903, where the transceiver 903 is used for receiving and sending data under the control of the processor 901, a preset program is stored in the memory 902, the processor 901 reads the program in the memory 902, and executes the following processes according to the program:

instructing the transceiver 903 to transmit at least one of the access signals.

In a possible implementation manner, the transceiver 903 transmits first indication information semi-statically or dynamically, where the first indication information indicates a value range of the first identifier; and/or semi-statically or dynamically sending second indication information, wherein the second indication information indicates the value range of the second identifier.

In a possible embodiment, the access signal is any one of the following:

a downlink synchronization signal;

downlink system access signals;

sending a special signal of a receiving point TRP;

a beam-specific signal;

an uplink random access signal;

In a possible embodiment, the transceiver 903 is further configured to: receiving a feedback signal returned by a receiving device, wherein the feedback signal carries indication information of an access signal selected by the receiving device from all received access signals.

In a possible embodiment, the processor 901 is further configured to: determining a signal characteristic of an access signal indicated by indication information of the access signal carried in the feedback signal; the transceiver 903 transmits a signal carrying data information according to the determined signal characteristics.

Based on the same inventive concept, a sixth embodiment of the present invention provides a receiving apparatus, where specific implementation of the receiving apparatus may refer to description of the method embodiment, and repeated parts are not repeated, as shown in fig. 10, the receiving apparatus mainly includes a processor 1001, a memory 1002, and a transceiver 1003, where the transceiver 1003 receives and transmits data under control of the processor 1001, the memory 1002 stores a preset program, the processor 1001 reads the program in the memory 1002, and executes the following processes according to the program:

receiving, by the transceiver 1003, at least one access signal, wherein signal characteristics of the access signal include at least one of a time-domain transmission position, a frequency-domain transmission position, and code-domain characteristics, each of the access signals having different signal characteristics;

processing the at least one access signal.

In a possible embodiment, the transceiver 1003 is further configured to receive first indication information, where the first indication information indicates a value range of the first identifier, and the first indication information is semi-static or dynamic information; and/or receiving second indication information, wherein the second indication information indicates the value range of the second identifier, and the second indication information is semi-static or dynamic information.

In a possible embodiment, the access signal is any one of the following:

a downlink synchronization signal;

downlink system access signals;

sending a special signal of a receiving point TRP;

a beam-specific signal;

an uplink random access signal;

In a possible embodiment, the processor 1001 selects one access signal from all received access signals; and returning a feedback signal to the sending device through the transceiver 1003, wherein the feedback signal carries indication information of the selected access signal.

In a possible embodiment, after returning a feedback signal to the sending device through the transceiver 1003, the processor 1001 receives, through the transceiver 1003, a signal carrying data information sent by the sending device, where the signal carrying data information is sent according to the determined signal characteristic after the sending device determines, for the signal characteristic of an access signal indicated by indication information of an access signal carried in the feedback signal.

Where the processors, memory, and transceivers are connected by a bus in fig. 9-10, the bus architecture may include any number of interconnected buses and bridges, with one or more of the processors represented by the processors and various circuits of the memory represented by the memory being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver may be a plurality of elements, i.e., including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor is responsible for managing the bus architecture and the usual processing, and the memory may store data used by the processor in performing operations.

Based on the above technical solution, in the embodiment of the present invention, the sending device sends at least one access signal, each access signal has different signal characteristics, and the signal characteristics include at least one of a time domain sending position, a frequency domain sending position, and a code domain characteristic, so that different access signals can be distinguished according to the signal characteristics of the access signal, and a TRP or a beam corresponding to the access signal can be determined according to the signal characteristics of the access signal, so that the UE can access a network from one TRP or beam through the access signal, and a solution is provided for implementing access of the UE in a future communication system.

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

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

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

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

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

Claims

1. An access signal transmission method is applied to a wireless communication system; a cell in the wireless communication system is provided with a plurality of access sites, the plurality of access sites jointly provide coverage of the whole cell, and User Equipment (UE) performs initial synchronization and system access from one of the plurality of access sites, or the communication system generates a beam by using large-scale Multiple Input Multiple Output (MIMO) through antenna shaping, one access site generates a plurality of beams, each beam points to different directions, and the UE performs initial synchronization and system access through one of the plurality of beams;

the method comprises the following steps:

the method comprises the steps that a transmitting device generates at least one access signal, wherein each access signal has different signal characteristics, and the signal characteristics comprise at least one of time domain transmission positions, frequency domain transmission positions and code domain characteristics; the access signal is determined by a first identifier and at least one second identifier according to a preset rule; the preset rule is used for determining the mapping relation between the first identifier and the second identifier and the signal characteristics of the access signal; if the number of the access signals is more than one, different access signals correspond to the same first identifier, and at least one of second identifiers corresponding to at least one access signal is different from second identifiers corresponding to other access signals;

the sending equipment sends at least one access signal so that the receiving equipment selects one access signal from all received access signals and returns a feedback signal to the sending equipment;

wherein after the sending device sends at least one of the access signals, the method further comprises:

the sending equipment receives a feedback signal returned by the receiving equipment, wherein the feedback signal carries indication information of an access signal selected by the receiving equipment from all received access signals, so that the sending equipment determines a corresponding access site or beam according to the signal characteristic of the access signal indicated by the indication information.

2. The method of claim 1, wherein said access signal comprises a first component and at least one second component, wherein said first component of different said access signals is the same and wherein at least one of said second component of different said access signals is different.

3. The method of claim 1, wherein the sending device sends first indication information semi-statically or dynamically, the first indication information indicating a value range of the first identifier; and/or the presence of a gas in the gas,

4. The method of claim 1, wherein the code-domain characteristic comprises at least one of a base sequence, a scrambling sequence, and a spreading sequence.

5. The method of any of claims 1-4, wherein the access signal is any of:

a downlink synchronization signal;

downlink system access signals;

sending a special signal of a receiving point TRP;

a beam-specific signal;

an uplink random access signal;

6. The method of claim 1, wherein the indication information of the access signal carried in the feedback signal is: and the receiving equipment selects the indication information of the optimal access signal from all the received access signals.

7. The method of claim 1, wherein the number of bits of the feedback signal is pre-configured;

alternatively, the first and second electrodes may be,

8. The method of claim 1, wherein after the sending device receives the feedback signal returned by the receiving device, the method further comprises:

9. An access signal receiving method is applied to a wireless communication system; a cell in the wireless communication system is provided with a plurality of access sites, the plurality of access sites jointly provide coverage of the whole cell, and User Equipment (UE) performs initial synchronization and system access from one of the plurality of access sites, or the communication system generates a beam by using large-scale Multiple Input Multiple Output (MIMO) through antenna shaping, one access site generates a plurality of beams, each beam points to different directions, and the UE performs initial synchronization and system access through one of the plurality of beams;

the method comprises the following steps:

the receiving device receives at least one access signal, wherein the signal characteristics of the access signal comprise at least one of time domain transmission position, frequency domain transmission position and code domain characteristics, and each access signal has different signal characteristics; the access signal is determined by a first identifier and at least one second identifier according to a preset rule; the preset rule is used for determining the mapping relation between the first identifier and the second identifier and the signal characteristics of the access signal; if the number of the access signals is more than one, different access signals correspond to the same first identifier, and at least one of second identifiers corresponding to at least one access signal is different from second identifiers corresponding to other access signals;

the receiving device processing the at least one access signal;

wherein the receiving device processes the at least one access signal, comprising:

the receiving equipment selects an access signal from all the received access signals and returns a feedback signal to the sending equipment, wherein the feedback signal carries indication information of the selected access signal, so that the sending equipment determines a corresponding access site or beam according to the signal characteristics of the access signal indicated by the indication information.

10. The method of claim 9, wherein said access signal includes a first component and at least one second component, wherein said first component of different said access signals is the same and wherein at least one of said second component of different said access signals is different.

11. The method of claim 9, wherein a receiving device receives first indication information, the first indication information indicating a value range of the first identifier, and the first indication information being semi-static or dynamic information; and/or the presence of a gas in the gas,

12. The method of claim 9, wherein the code-domain characteristic comprises at least one of a base sequence, a scrambling sequence, and a spreading sequence.

13. The method according to any of claims 9-12, wherein the access signal is any of:

a downlink synchronization signal;

downlink system access signals;

sending a special signal of a receiving point TRP;

a beam-specific signal;

an uplink random access signal;

14. The method of claim 9, wherein the selected access signal is an optimal access signal.

15. The method of claim 9, wherein the number of bits of the feedback signal is pre-configured;

alternatively, the first and second electrodes may be,

16. The method of claim 9, wherein after the receiving device returns a feedback signal to the transmitting device, the method further comprises:

17. A transmitting device, for use in a wireless communication system; a cell in the wireless communication system is provided with a plurality of access sites, the plurality of access sites jointly provide coverage of the whole cell, and User Equipment (UE) performs initial synchronization and system access from one of the plurality of access sites, or the communication system generates a beam by using large-scale Multiple Input Multiple Output (MIMO) through antenna shaping, one access site generates a plurality of beams, each beam points to different directions, and the UE performs initial synchronization and system access through one of the plurality of beams; the transmission apparatus includes:

a processing module configured to generate at least one access signal, wherein each access signal has different signal characteristics, and the signal characteristics include at least one of a time-domain transmission position, a frequency-domain transmission position, and a code-domain characteristic; the access signal is determined by a first identifier and at least one second identifier according to a preset rule; the preset rule is used for determining the mapping relation between the first identifier and the second identifier and the signal characteristics of the access signal; if the number of the access signals is more than one, different access signals correspond to the same first identifier, and at least one of second identifiers corresponding to at least one access signal is different from second identifiers corresponding to other access signals;

a sending module, configured to send at least one access signal, so that a receiving device selects one access signal from all received access signals, and returns a feedback signal to the sending device;

wherein the sending device further comprises a receiving module configured to: receiving a feedback signal returned by a receiving device, wherein the feedback signal carries indication information of an access signal selected by the receiving device from all received access signals, so that the transmitting device determines a corresponding access site or beam according to the signal characteristics of the access signal indicated by the indication information.

18. The apparatus of claim 17, wherein the access signal comprises a first component and at least one second component, the first component of different ones of the access signals being the same and at least one of the second components of different ones of the access signals being different.

19. The device of claim 17, wherein the sending module is further to: semi-statically or dynamically sending first indication information, wherein the first indication information indicates the value range of the first identifier; and/or semi-statically or dynamically sending second indication information, wherein the second indication information indicates the value range of the second identifier.

20. The device of claim 17, wherein the processing module is further to:

determining a signal characteristic of an access signal indicated by indication information of the access signal carried in the feedback signal;

the sending module is further configured to:

and sending a signal carrying data information according to the signal characteristics determined by the processing module.

21. A receiving apparatus, characterized by being applied to a wireless communication system; a cell in the wireless communication system is provided with a plurality of access sites, the plurality of access sites jointly provide coverage of the whole cell, and User Equipment (UE) performs initial synchronization and system access from one of the plurality of access sites, or the communication system generates a beam by using large-scale Multiple Input Multiple Output (MIMO) through antenna shaping, one access site generates a plurality of beams, each beam points to different directions, and the UE performs initial synchronization and system access through one of the plurality of beams; the receiving apparatus includes:

a receiving module, configured to receive at least one access signal, where a signal characteristic of the access signal includes at least one of a time-domain transmission position, a frequency-domain transmission position, and a code-domain characteristic, and each access signal has a different signal characteristic; the access signal is determined by a first identifier and at least one second identifier according to a preset rule; the preset rule is used for determining the mapping relation between the first identifier and the second identifier and the signal characteristics of the access signal; if the number of the access signals is more than one, different access signals correspond to the same first identifier, and at least one of second identifiers corresponding to at least one access signal is different from second identifiers corresponding to other access signals;

a processing module for processing the at least one access signal;

wherein the processing module is specifically configured to: selecting one access signal from all received access signals;

the receiving device further comprises a sending module configured to: and returning a feedback signal to the sending device, wherein the feedback signal carries the indication information of the access signal selected by the processing module, so that the sending device determines the corresponding access site or beam according to the signal characteristic of the access signal indicated by the indication information.

22. The apparatus of claim 21, wherein the access signal comprises a first component and at least one second component, the first component of different ones of the access signals being the same and at least one of the second components of different ones of the access signals being different.

23. The device of claim 21, wherein the receiving module is further to:

24. The device of claim 21, wherein the receiving module is further to: