CN110381588B

CN110381588B - Communication method and communication device

Info

Publication number: CN110381588B
Application number: CN201810333938.3A
Authority: CN
Inventors: 刘建琴; 沈祖康; 罗俊; 黎超
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-04-13
Filing date: 2018-04-13
Publication date: 2021-07-16
Anticipated expiration: 2038-04-13
Also published as: WO2019196689A1; CN110381588A

Abstract

The application provides a communication method and a communication device, wherein the method comprises the steps that a terminal device receives indication information, and the indication information is used for indicating that an SSB pattern is a first pattern or a second pattern; the terminal equipment determines the SSB pattern according to the indication information. The method and the device for accessing the terminal equipment to the network can improve the network access efficiency of the terminal equipment.

Description

Communication method and communication device

Technical Field

The present application relates to the field of communications, and more particularly, to a method of communication and a communication apparatus.

Background

A fifth Generation (5G) communication system, such as a New Radio (NR) system, defines a synchronization Signal/Physical Broadcast Channel (PBCH) block (SSB). One SSB occupies 4 consecutive (OFDM) symbols, where the SSB includes a New radio-primary synchronization signal (NPSS), a New radio-secondary synchronization signal (NR-SSS), and a New radio-physical broadcast channel (NR-PBCH).

When a terminal device needs to access a network, cell search and cell system information acquisition are required. For example, the terminal device may acquire downlink synchronization with the cell by searching for the SSB. Then, the terminal device needs to acquire system information (system information) of the cell, establish a connection with the cell through a random access procedure (random access procedure), and acquire uplink synchronization.

The SSB detection window (SSB detection window) is a time window defined in NR and having a duration of 5ms, and within the SSB detection window of 5ms, a maximum of L SSBs (L >1, equivalent to the maximum number of SSBs) can be transmitted.

In NR, at each subcarrier interval, one carrier frequency band corresponds to one SSB pattern, and a network device may send an SSB according to one SSB pattern corresponding to the carrier frequency band, however, an existing SSB pattern may conflict with an uplink and downlink resource location configured in NR, which results in a small number of SSBs sent by the network device in an SSB detection window according to the SSB pattern, and affects network access efficiency of the terminal device.

Therefore, how to send the SSB and improve the efficiency of the terminal device accessing the network becomes a problem to be solved urgently.

Disclosure of Invention

The application provides a communication method and a communication device, which can improve the network access efficiency of terminal equipment.

In a first aspect, a method of communication is provided, the method including:

the terminal equipment receives indication information, wherein the indication information is used for indicating that the SSB pattern is a first pattern or a second pattern; and the terminal equipment determines the SSB pattern according to the indication information.

Specifically, in the prior art, SSB patterns are fixed, which is difficult to meet the requirements of different scenarios, and affects the efficiency of the terminal device accessing the network. According to the embodiment of the application, the SSB pattern can be set to be one of a plurality of patterns, such as a first pattern and a second pattern, then the network device can flexibly determine one SSB pattern from the plurality of SSB patterns according to different scenes, and the SSB pattern is indicated through the indication information, then the network device can send the SSB according to the determined SSB pattern, and the maximum number of the SSBs sent in one SSB detection window can be achieved. Therefore, the access time delay can be reduced, and the network access efficiency of the terminal equipment can be improved.

In a second aspect, a method of communication is provided, including:

the network equipment determines an SSB pattern;

the network device sends indication information, where the indication information is used to indicate that the SSB pattern is a first pattern or a second pattern.

It should be understood that, in the embodiment of the present application, the SSB pattern may represent a mapping pattern of SSB, and the SSB pattern may also be referred to as an SSB mapping pattern or an SSB resource mapping pattern, and the embodiment of the present application is not limited thereto.

With reference to the first aspect or the second aspect, in a possible implementation manner, a subcarrier spacing SCS of an SSB corresponding to the SSB pattern is 30 kHz.

With reference to the first aspect or the second aspect, in a possible implementation manner, the SSB pattern is a pattern of SSBs transmitted on one carrier frequency band.

With reference to the first aspect or the second aspect, in a possible implementation manner, the one carrier frequency band is one of the following carrier frequency bands:

a carrier frequency band n5, a carrier frequency band n6, a carrier frequency band n41, a carrier frequency band n77, a carrier frequency band n78 and a carrier frequency band n 79.

In the embodiment of the present application, for the one carrier frequency band, the SSB pattern is not fixed and may be selected by the network device, for example, the network device may select the SSB pattern as the first pattern or the second pattern, so as to avoid a resource conflict problem caused by fixing the pattern corresponding to the one carrier frequency band as the second pattern in the prior art. Therefore, the access time delay can be reduced, and the network access efficiency of the terminal equipment can be improved.

With reference to the first aspect or the second aspect, in one possible implementation manner,

the indication information comprises first information or an information sequence.

It should be understood that "first information" and "information sequence" in the embodiments of the present application only indicate two forms of first information, "first information" and "information sequence" may also be called other names, for example, "first information" may be called bit information, at least one bit, a set of bits, and the like. The "information sequence" may also be referred to as an information set, sequence information, a signal set, a character string, and the like, and the embodiment of the present application is not limited thereto.

the first information is carried on one bit, wherein a bit of 0 indicates a first pattern and a bit of 1 indicates a second pattern.

With reference to the first aspect or the second aspect, in a possible implementation manner, the first information is carried on reserved bits or newly added bits.

In other words, the 1 bit carrying the first information may be an existing bit in existing signaling or messages, e.g., a reserved bit. Alternatively, the 1 bit is a newly added 1 bit in an existing message or signaling.

the terminal equipment receives the indication information, wherein the terminal equipment receives the first information carried in a broadcast channel PBCH, a downlink shared channel PDSCH or a radio resource control RRC signaling.

the network equipment sends indication information, wherein the indication information comprises that the network equipment sends the first information through a broadcast channel PBCH, a downlink shared channel PDSCH or a radio resource control RRC signaling.

With reference to the first aspect or the second aspect, in a possible implementation manner, the first information is carried on reserved bits of a PBCH.

With reference to the first aspect or the second aspect, in a possible implementation manner, the reserved bits are first last bits or second last bits in time domain indication bits of the PBCH.

Therefore, the embodiment of the application adopts the reserved bit to carry the indication information, does not need to add extra bits, can be compatible with the prior art, and can reduce the implementation difficulty.

With reference to the first aspect or the second aspect, in a possible implementation manner, the first information is carried on 1 bit added in the remaining minimum system information RMSI carried by the PDSCH.

Therefore, in the embodiment of the present application, the indication information is carried by adding a new bit, the bit of the existing signaling does not need to be modified, and the bit number of the indication information is small, for example, only 1 bit, which can be easily implemented.

With reference to the first aspect or the second aspect, in a possible implementation manner, the first information is carried on 1 bit newly added in a measurement target MO in an RRC signaling.

With reference to the first aspect or the second aspect, in a possible implementation manner, the receiving, by the terminal device, indication information includes receiving, by the terminal device, the information sequence of a PBCH.

With reference to the first aspect or the second aspect, in a possible implementation manner, the sending, by the network device, indication information includes sending, by the network device, the information sequence of PBCH.

Therefore, the embodiment of the application indicates the SSB pattern through the existing information sequence, and does not need to indicate the SSB pattern by sending an additional signaling, thereby reducing signaling overhead and saving network resources.

With reference to the first aspect or the second aspect, in a possible implementation manner, the information sequence includes a scrambling sequence of a PBCH or a demodulation reference signal, DMRS, sequence of the PBCH.

the sequence of the DMRS comprises a sequence obtained according to a first initialization value and a sequence obtained according to a second initialization value, wherein the first initialization value corresponds to the first pattern, and the second initialization value corresponds to the second pattern;

alternatively, the first and second electrodes may be,

the sequence of the DMRS comprises a sequence obtained according to a first cyclic shift value and a sequence obtained according to a second cyclic shift value, wherein the first cyclic shift value corresponds to the first pattern, and the second cyclic shift value corresponds to the second pattern.

In a third aspect, a method of transmission is provided, the method comprising:

the method comprises the steps that terminal equipment determines an SSB pattern on a carrier frequency band, wherein the SSB pattern is a first pattern or a second pattern; and the terminal equipment receives a first SSB according to the SSB pattern.

In the embodiments of the present application, by configuring multiple SSB patterns for one carrier frequency band, when one SSB pattern of one carrier frequency band conflicts with uplink and downlink resources configured in the NR, another SSB pattern of the one carrier frequency band that does not conflict with the configured uplink and downlink resources may be used to send an SSB. Furthermore, the embodiment of the application can reduce or avoid the occurrence of the conflict situation. Therefore, the number of the SSBs sent in one SSB detection window can reach the maximum, and the access delay can be reduced, thereby improving the network access efficiency of the terminal device.

In a fourth aspect, a method of transmission is provided, the method comprising:

the network equipment determines an SSB pattern on a carrier frequency band, wherein the SSB pattern is a first pattern or a second pattern; and the terminal equipment sends the first SSB according to the SSB pattern.

It is to be understood that the method of the third aspect corresponds to the first method, the method of the fourth aspect corresponds to the second aspect, and the specific implementation and advantages of the third or fourth aspect may be as described above, with appropriate omission of detailed description herein.

With reference to the third aspect or the fourth aspect, in one possible implementation manner, the first pattern is different from the second pattern.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the determining, by the terminal device, an SSB pattern on a carrier frequency band includes:

and the terminal equipment determines the SSB pattern according to the first information.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the first information is carried in reserved bits in a broadcast channel PBCH.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the reserved bits are first last bits or second last bits in time domain indication bits of the PBCH.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the first last bit is a6 bits, and the second last bit is a7 bits.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the first information is information in remaining minimum system information RMSI carried by a downlink shared channel PDSCH.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the first information is information in a measurement target MO in radio resource control RRC signaling.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the first information is newly added 1-bit information.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the determining, by the terminal device, an SSB pattern on a carrier frequency band includes: and the terminal equipment determines the SSB pattern according to the information sequence.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the information sequence is a scrambling sequence of a PBCH or a sequence of a DMRS in an SSB.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the information sequence is a scrambling code sequence of a PBCH, where:

with reference to the third aspect or the fourth aspect, the PBCH scrambling sequence is a first scrambling sequence, and the SSB pattern is the first pattern, or

The scrambling code sequence of the PBCH is a second scrambling code sequence, and the SSB pattern is the second pattern.

In one possible implementation manner, the information sequence is a sequence of a demodulation reference signal DMRS of a PBCH, where:

with reference to the third aspect or the fourth aspect, in a possible implementation manner, the sequence of the DMRS is a first sequence, and the SSB pattern is the first pattern, or the sequence of the DMRS is a second sequence, and the SSB pattern is the second pattern.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the first sequence is a sequence obtained according to a first initialization value, the second sequence is a sequence obtained according to a second initialization value, the first initialization value is a value obtained according to the first pattern, and the second initialization value is a value obtained according to the second pattern;

alternatively, the first and second electrodes may be,

the first sequence is a sequence obtained according to a first cyclic shift value, the second sequence is a sequence obtained according to a second cyclic shift value, the first cyclic shift value is a value obtained according to the first pattern, and the second cyclic shift value is a value obtained according to the second pattern.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the sequence of the DMRS includes a sequence obtained according to a first initialization value and a sequence obtained according to a second initialization value, where the first initialization value is a numerical value obtained according to the first pattern, and the second initialization value is a numerical value obtained according to the second pattern;

alternatively, the first and second electrodes may be,

the sequence of the DMRS comprises a sequence obtained according to a first cyclic shift value and a sequence obtained according to a second cyclic shift value, wherein the first cyclic shift value is a numerical value obtained according to the first pattern, and the second cyclic shift value is a numerical value obtained according to the second pattern.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the method further includes the terminal device receiving a second SSB.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the second SSB is different from the first SSB.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the terminal device receives the second SSB before receiving the first SSB

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the second SSB is the same as the first SSB.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the terminal device determines the SSB pattern while receiving the first SSB, or the terminal device determines the SSB pattern after receiving the second SSB.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the SSB pattern is determined according to one or more of reserved bits in a PBCH, a scrambling sequence of the PBCH, and a sequence of a DMRS of the PBCH, which are carried in the second SSB.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the method further includes the terminal device receiving the RMSI.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, before the terminal device receives the first SSB according to the SSB pattern, the method further includes the terminal device receiving an RMSI.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the method further includes the terminal device receiving RRC signaling.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, before the terminal device receives the first SSB according to the SSB pattern, the method further includes the terminal device receiving RRC signaling.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the subcarrier spacing SCS of the first SSB is 30KHz, or the subcarrier spacing SCS of the second SSB is 30 KHz.

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the one carrier frequency band is one of the following carrier frequency bands:

With reference to the third aspect or the fourth aspect, in a possible implementation manner, the one carrier frequency band is a continuous segment of spectrum resources.

In a fifth aspect, a communication device is provided, which includes means for performing the method of the first aspect or any one of the possible implementations of the first aspect, or any one of the possible implementations of the third aspect or the third aspect.

In one implementation, the communication device is a terminal device.

In a sixth aspect, there is provided a communication device comprising means for performing the method of the second aspect or any of its possible implementations, or of the fourth aspect or any of its possible implementations.

In one implementation, the communication device is a network device.

In a seventh aspect, a communications apparatus is provided that includes a transceiver, a processor, and a memory. The processor is configured to control the transceiver to transceive signals, the memory is configured to store a computer program, and the processor is configured to retrieve and execute the computer program from the memory, so that the communication apparatus performs the method of the first aspect and its possible implementation manner, or the third aspect or its possible implementation manner.

In one implementation, the communication device is a terminal device.

In an eighth aspect, a communications apparatus is provided that includes a transceiver, a processor, and a memory. The processor is configured to control the transceiver to transceive signals, the memory is configured to store a computer program, and the processor is configured to retrieve and execute the computer program from the memory, so that the communication apparatus performs the method of the second aspect and its possible implementation manner, or the fourth aspect or its possible implementation manner.

In one implementation, the communication device is a network device.

In a ninth aspect, there is provided a computer readable medium having stored thereon a computer program which, when executed by a computer, implements the first aspect or any of the possible implementations of the first aspect, or the method of any of the possible implementations of the third aspect or the third aspect.

A tenth aspect provides a computer readable medium having stored thereon a computer program which, when executed by a computer, implements the second aspect or any of its possible implementations, or the method of any of its possible implementations.

In an eleventh aspect, a computer program product is provided, which when executed by a computer implements the first aspect or any of its possible implementations, or the method of any of its possible implementations of the third aspect or the third aspect.

In a twelfth aspect, a computer program product is provided, which when executed by a computer implements the method of the second aspect or any of the possible implementations of the fourth aspect.

In a thirteenth aspect, a processing apparatus is provided, comprising a processor and an interface;

the processor is configured to perform the methods as an execution subject of the methods in any possible implementation manner of the first aspect, the second aspect, the first aspect, or the second aspect, where relevant data interaction processes (e.g. making or receiving data transmission) are completed through the interface. In a specific implementation process, the interface may further complete the data interaction process through a transceiver.

It should be understood that the processing device in the above-mentioned thirteen aspects may be a chip, the processor may be implemented by hardware or may be implemented by software, and when implemented by hardware, the processor may be a logic circuit, an integrated circuit, or the like; when implemented in software, the processor may be a general-purpose processor implemented by reading software code stored in a memory, which may be integrated with the processor, located external to the processor, or stand-alone. The memory and the processor may communicate by wire or wirelessly.

In a fourteenth aspect, a communication system is provided, which includes the foregoing network device and terminal device.

Drawings

Fig. 1 is a schematic diagram of a scenario to which an embodiment of the present application is applicable.

Fig. 2 is a schematic diagram of an SSB pattern according to an embodiment of the present application.

Fig. 3 is a schematic view of an SSB pattern according to another embodiment of the present application.

Fig. 4 is a schematic view of an SSB pattern according to another embodiment of the present application.

FIG. 5 is a schematic diagram of a resource configuration according to an embodiment of the present application.

Fig. 6 is a schematic view of an SSB pattern according to another embodiment of the present application.

Fig. 7 is a schematic view of an SSB pattern according to another embodiment of the present application.

Fig. 8 is a schematic diagram of a communication method according to one embodiment of the present application.

Fig. 9 is a schematic diagram of a communication method according to another embodiment of the present application.

FIG. 10 is a schematic diagram of a communication device according to one embodiment of the present application.

Fig. 11 is a schematic diagram of a terminal device according to an embodiment of the present application.

Fig. 12 is a schematic diagram of a communication device according to another embodiment of the present application.

FIG. 13 is a schematic diagram of a network device according to one embodiment of the present application.

Detailed Description

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

Embodiments of the present application are applicable to various communication systems, and thus, the following description is not limited to a specific communication system. The next generation communication system, i.e., the fifth generation (5G) communication system, is a New Radio (NR) system.

In this embodiment, the network device may be a network side device in a future 5G network, for example, a transmission point (TRP or TP) in an NR system, a base station (gNB) in the NR system, a radio frequency unit in the NR system, such as a remote radio frequency unit, one or a group (including multiple antenna panels) of antenna panels of the base station in the 5G system, and the like. Different network devices may be located in the same cell or different cells, and are not limited herein.

In some deployments, the gNB may include a Centralized Unit (CU) and a Distributed Unit (DU). The gNB may also include a Radio Unit (RU). The CU implements part of the function of the gNB, and the DU implements part of the function of the gNB, for example, the CU implements Radio Resource Control (RRC) and Packet Data Convergence Protocol (PDCP) layers, and the DU implements Radio Link Control (RLC), Medium Access Control (MAC) and Physical (PHY) layers. Since the information of the RRC layer eventually becomes or is converted from the information of the PHY layer, the higher layer signaling, such as RRC layer signaling or PHCP layer signaling, may also be considered to be transmitted by the DU or by the DU + RU under this architecture. It is to be understood that the network device may be a CU node, or a DU node, or a device including a CU node and a DU node. In addition, the CU may be divided into network devices in the access network RAN, or may be divided into network devices in the core network CN, which is not limited herein.

In the embodiments of the present application, a terminal device may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a drone device, and a terminal device in a future 5G network or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like, which are not limited in this embodiment.

By way of example, and not limitation, in embodiments of the present invention, the terminal device may also be a wearable device. Wearable equipment can also be called wearable intelligent equipment, is the general term of applying wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets for physical sign monitoring, smart jewelry and the like.

The embodiment of the present application may be applicable to any of the above communication systems, for example, the embodiment of the present application may be applicable to an LTE system and a subsequent evolution system such as 5G, or other wireless communication systems using various wireless access technologies, such as systems using access technologies of code division Multiple access, frequency division Multiple access, time division Multiple access, orthogonal frequency division Multiple access, single carrier frequency division Multiple access, and the like, and is particularly applicable to a scenario that requires channel information feedback and/or applies a secondary precoding technology, for example, a wireless network using a large-scale array antenna (Massive Multiple-Input Multiple-Output, Massive MIMO) technology, a wireless network using a distributed antenna technology, and the like.

Fig. 1 is a schematic diagram of a scenario of a communication system to which an embodiment of the present application is applicable. As shown in fig. 1, the communication system 100 includes a network side device 102, and a plurality of terminal devices (e.g., a terminal device 116 and a terminal device 122), where the network device 102 may provide a communication service for the terminal devices and access a core network, and the terminal devices access the network by searching for a synchronization signal, a broadcast signal, and the like sent by the network device, so as to perform communication with the network. For example, uplink/downlink transmission is performed.

In particular, the network side device 102 may include multiple antenna groups. Each antenna group can include multiple antennas, e.g., one antenna group can include

antennas

104 and 106, another antenna group can include

antennas

106 and 110, and an additional group can include

antennas

112 and 114. 2 antennas are shown in fig. 1 for each antenna group, however, more or fewer antennas may be utilized for each group. Network-side device 102 may additionally include a transmitter chain and a receiver chain, each of which may comprise a plurality of components associated with signal transmission and reception (e.g., processors, modulators, multiplexers, demodulators, demultiplexers, antennas, etc.), as will be appreciated by one skilled in the art.

Network-side device 102 may be in communication with a plurality of terminal devices (e.g., terminal device 116 and terminal device 122). However, it is understood that network-side device 102 may communicate with any number of terminal devices similar to

terminal devices

116 or 122.

As shown in fig. 1, terminal device 116 is in communication with

antennas

112 and 114, where

antennas

112 and 114 transmit information to terminal device 116 over forward link 116 and receive information from terminal device 116 over reverse link 120. In addition, terminal device 122 is in communication with

antennas

104 and 106, where

antennas

104 and 106 transmit information to terminal device 122 over forward link 124 and receive information from terminal device 122 over reverse link 126.

In a Frequency Division Duplex (FDD) system, forward link 116 may utilize a different frequency band than that used by reverse link 120, and forward link 124 may utilize a different frequency band than that used by reverse link 126, for example.

As another example, in Time Division Duplex (TDD) systems and full duplex (full duplex) systems, forward link 116 and reverse link 120 may use a common frequency band and forward link 124 and reverse link 126 may use a common frequency band.

Each group of antennas and/or area designed for communication is referred to as a sector of network-side device 102. For example, antenna groups may be designed to communicate with terminal devices in a sector of the area covered by network-side device 102. During communication between network-side device 102 and

terminal devices

116 and 122 over forward links 116 and 124, respectively, the transmitting antennas of network-side device 102 may utilize beamforming to improve signal-to-noise ratio of forward links 116 and 124. Moreover, mobile devices in neighboring cells can experience less interference when network-side device 102 utilizes beamforming to transmit to

terminal devices

116 and 122 scattered randomly through an associated coverage area, as compared to a manner in which the network-side device transmits signals through a single antenna to all of its terminal devices.

At a given time, network-side device 102, terminal device 116, or terminal device 122 may be a wireless communication transmitting apparatus and/or a wireless communication receiving apparatus. When sending data, the wireless communication sending device may encode the data for transmission. Specifically, the wireless communication transmitting device may obtain (e.g., generate, receive from other communication devices, or save in memory, etc.) a number of data bits to be transmitted over the channel to the wireless communication receiving device. Such data bits may be contained in a transport block (or transport blocks) of data, which may be segmented to produce multiple code blocks.

Furthermore, the communication system 100 may be a public land mobile network PLMN (public land mobile network) network or device-to-device (D2D) network or machine-to-machine (M2M) network or other networks, which is illustrated in fig. 1 for ease of understanding only and is a simplified schematic diagram, and other network devices may be included in the network, which are not shown in fig. 1.

As described above, when the terminal device needs to access the network (for example, after the terminal device is powered on, or when the terminal device needs to be reconnected after the connection with the network device is disconnected), the terminal device may first complete downlink synchronization by searching the SSB, then obtain a system message, and then the terminal device may initiate a random access process (random access procedure) by sending a random access preamble sequence (preamble) to establish a connection with the cell and obtain uplink synchronization.

Currently, in NR, at each subcarrier interval, one carrier frequency band corresponds to one SSB pattern, and a network device may send an SSB according to the one SSB pattern corresponding to the carrier frequency band. In NR, the mapping of SSB is affected by uplink and downlink configuration information, and SSB can only be transmitted on downlink symbols of semi-static (semi-static) Downlink (DL) resources and unknown (unknown) resources. An SSB pattern of an existing carrier frequency band may conflict with uplink and downlink resources configured in the NR, so that the number of SSBs sent by a network device in an SSB detection window on the carrier frequency band according to the SSB pattern is small, the coverage requirement on the carrier frequency band cannot be met, or the maximum number of SSBs transmitted in the SSB detection window cannot be met, and therefore, in the prior art, transmission of the maximum number of SSBs can be achieved through multiple rounds of transmission, which results in a long access delay, and thus, the efficiency of accessing the terminal device to the network is affected.

In view of the above problems, an embodiment of the present application provides a communication method, where in the embodiment of the present application, one carrier frequency band may correspond to multiple SSB patterns, for example, two SSB patterns, a network device may flexibly determine one SSB pattern from the multiple SSB patterns according to different scenes, and then the network device may send SSBs according to the determined SSB pattern, and the maximum number of SSBs sent in one SSB detection window may be reached. Therefore, the access time delay can be reduced, and the network access efficiency of the terminal equipment can be improved.

In other words, in this embodiment of the present application, multiple SSB patterns may be configured for one carrier frequency band, and when one SSB pattern of one carrier frequency band conflicts with uplink and downlink resources configured in the NR, another SSB pattern of the one carrier frequency band that does not conflict with the configured uplink and downlink resources may be used to send an SSB in this embodiment of the present application. Furthermore, the embodiment of the application can reduce or avoid the occurrence of the conflict situation. Therefore, the number of the SSBs sent in one SSB detection window can reach the maximum, and the access delay can be reduced, thereby improving the efficiency of the terminal device accessing the network.

For convenience of understanding and explanation, the following description will be given by way of example, and not limitation, to describe the execution process and actions of the communication method of the present application in a communication system.

First, in order to make the method of the embodiment of the present application easier to understand, some concepts related to the embodiment of the present application are explained below.

In the embodiment of the present application, the term "carrier frequency band" may also be referred to as an operating band (operating band), and the carrier frequency band refers to a continuous spectrum resource that can be used by an operator.

TABLE 1

For example, as shown in Table 1, a contiguous segment of spectrum resources is 1920 MHz-1980 MHz, 3300 MHz-4200 MHz, 3300 MHz-3800 MHz, and so on. This is not a limitation of the present application. For example, not limited to the spectrum resources shown in table 1. Currently, 3GPP standards TS38.101 and TS38.104 define multiple carrier frequency bands, which are detailed in table 1 below, where table 1 may be tables 5.2-1(NR operating bands in FR1) in the standard, where, for the same carrier frequency band, in an FDD mode, the uplink corresponding spectrum resources are different from the downlink corresponding spectrum resources; in the TDD mode, the uplink spectrum resource is the same as the downlink spectrum resource. Taking the operating band n41 as an example, the lower limit F of the corresponding spectrum resource is set in the downlink_{DL_low}2496MHz, upper limit F_{DL_high}2690 MHz. While the frequency spectrum resource corresponding to the band n77 is 3300 MHz-4200 MHz, the frequency spectrum resource corresponding to the band n78 is 3300 MHz-3800 MHz, and the frequency spectrum resource corresponding to the band n79 is 4400 MHz-5000 MHz.

In the embodiment of the present application, one SSB occupies 4 consecutive Orthogonal Frequency Division Multiplexing (OFDM) symbols. The SSB detection window (burst set) is a time window defined in NR and having a duration of 5ms, and the maximum number of SSBs, i.e., L SSBs, can be transmitted within the SSB detection window of 5ms at most. For different frequency band ranges, the values of L are as follows:

(1) and in the frequency band below 3GHz, L is 4.

(2) The 3GHz to 6GHz band, L ═ 8 or 16.

(3) The 6GHz to 52.6GHz band, L64.

It should be understood that the value of L in the embodiment of the present application is not limited to the above-listed values, for example, L may be equal to 8 in a frequency band below 3GHz, and may also take other values.

In NR, SSB supports 15kHz, 30kHz, 120kHz and 240kHz subcarrier spacing. The SSBs are configured in the time domain with different mapping patterns (i.e., SSB patterns) in one SSB detection window for different subcarrier spacings. In one SSB detection window in the current NR, there are 5 different mapping patterns for SSBs in the time domain. The following gives 3 mapping patterns at 15kHz and 30 kHz: SSB patterns corresponding to case a (case a), SSB patterns corresponding to case b (case b), and SSB patterns corresponding to case c (case c).

Case A: as shown in fig. 2, for the 15kHz subcarrier spacing, the OFDM symbol index corresponding to the selectable time domain position of the first symbol of the SSB in one SSB detection window (5ms) is {2,8} +14 x n. For the frequency bands below 3GHz (L-4), n is 0, 1. For the 3GHz to 6GHz band (L ═ 8), n is 0,1,2, 3. The specific mapping manner of the SSB selectable time domain position is shown in fig. 2, when L is 4, the SSB is distributed in the first slot (slot) and the second slot (slot), and when L is 8, the SSB is distributed in the first slot (slot) to the 4 th slot (slot), where the slot (slot) corresponding to the 15kHz subcarrier interval is 1 ms.

For Case a, the distribution of SSBs in 1ms (one slot) resource is shown in fig. 2, where there are two SSBs in each slot (slot), and as shown in fig. 2, one of the two SSBs occupies OFDM symbols (hereinafter referred to as symbols) 2 to 5, and the other SSB occupies symbols 8 to 11.

Case B: as shown in fig. 3, for a 30kHz subcarrier spacing, the OFDM symbol index corresponding to the selectable time domain position of the first symbol of the SSB in one SSB detection window (5ms) is {4,8,16,20} +28 x n. For the frequency bands below 3GHz (L-4), n-0. For the 3GHz to 6GHz band (L ═ 8), n is 0, 1. The specific mapping manner of the SSB selectable time domain position is shown in fig. 3, when L is 4, the SSB is distributed in the first slot (slot) and the second slot (slot), and when L is 8, the SSB is distributed in the first slot (slot) to the 4 th slot (slot), where the slot (slot) corresponding to the 30kHz subcarrier interval is 0.5 ms.

For Case B, the distribution of SSBs in 1ms (two slots) resources is as shown in fig. 3, where there are two SSBs in each slot (slot), and as shown in fig. 3, in the first slot, one of the two SSBs occupies symbols 4 to 7, and the other SSB occupies symbols 8 to 11; in the other slot, one of the two SSBs occupies symbols 2 to 5, and the other SSB occupies symbols 6 to 9.

Case C: as shown in fig. 4, for a 30kHz subcarrier spacing, the OFDM symbol index corresponding to the selectable time domain position of the first symbol of the SSB in one SSB detection window (5ms) is {2,8} +14 x n. For the frequency bands below 3GHz (L-4), n is 0, 1. For the 3GHz to 6GHz band (L ═ 8), n is 0,1,2, 3. Fig. 4 shows a specific mapping manner of the SSB selectable time domain position, where when L is 4, the SSB is distributed in a first slot (slot) and a second slot (slot), and when L is 8, the SSB is distributed in the first slot (slot) to a4 th slot (slot), where a slot corresponding to a 30kHz subcarrier interval is 0.5 ms.

For Case C, the distribution of SSBs in 1ms (two slots) resources is as shown in fig. 4, where there are two SSBs in each slot, as shown in fig. 4, and in one slot, one of the two SSBs occupies symbols 2 to 5, and the other SSB occupies symbols 8 to 11; in the other slot, one of the two SSBs occupies symbols 2 to 5, and the other SSB occupies symbols 8 to 11.

It should be understood that a slot (slot) involved in the present invention may also be a TTI and/or a time unit and/or a subframe and/or a mini-slot, etc., and the embodiments of the present application are not limited thereto.

It should be understood that in the embodiment of the present application, in one slot, a symbol between the first symbol (corresponding to OFDM symbol number 0) and the first OFDM symbol in the first SSB selectable position is generally used for the downlink control channel. In a time slot, a symbol between the last OFDM symbol of the last SSB selectable position and the last symbol (corresponding to OFDM symbol number 13) is generally used for a guard interval and uplink transmission, and the embodiment of the present invention is not limited thereto.

As shown in Table 2 below, in NR, one carrier frequency band corresponds to one SSB pattern at each subcarrier interval, where Table 2 may be Table (Table)5.4.3.3-1 (application SS transmitter entries per operating band (FR1)) in the standard. As shown in table 2, the SSB pattern (SS Block pattern) corresponding to NR carrier frequency Band (Operating Band) supporting 15kHz of SSB subcarrier spacing (SS Block SCD), for example, carrier frequency Band n1, is the SSB pattern corresponding to Case a in the above. In a carrier frequency band supporting 30kHz, such as carrier frequency band (operating band) n5, carrier frequency band n6, carrier frequency band n41, carrier frequency band n77, carrier frequency band n78 and carrier frequency band n79, the SSB pattern (pattern) corresponding thereto is the SSB pattern corresponding to Case C in the above, that is, the SSB pattern in fig. 4. For another example, in a carrier frequency band supporting 30kHz, for example, the SSB pattern corresponding to the carrier frequency band n5 is the above SSB pattern corresponding to Case B.

TABLE 2

Wherein, for a subcarrier spacing of 30kHz, in one SSB detection window, the SSB is configured in the time domain with two different mapping patterns as in fig. 3 and 4, namely, an SSB pattern corresponding to Case B and an SSB pattern corresponding to Case C. The SSB pattern (hereinafter referred to as mapping pattern 1 or pattern 1 for convenience of description) corresponding to Case B is mainly used in a scenario where NR carriers and LTE carriers coexist, and can avoid interference of a CRS at 15kHz on the LTE carrier. The SSB pattern corresponding to Case C (hereinafter referred to as mapping pattern 2 or pattern 2 for convenience of description) is mainly used for other scenes out of coexistence, and mainly considers the compatibility problem between the SSB mapping pattern of 30kHz and the SSB mapping pattern of 15 kHz.

Since the mapping of the SSB may be affected by the uplink and downlink configuration information, the SSB can only transmit on the downlink symbols in semi-static (semi-static) DL and unknown (unknown) resources. Therefore, the semi-static uplink and downlink configuration of the embodiment of the present application is described below.

In the aspect of semi-static uplink and downlink configuration, NR supports a very flexible configuration method. The uplink and downlink configuration resources of the NR include Downlink (DL) resources, Uplink (UL) resources, and unknown (unknown) resources. The semi-static uplink and downlink configuration may be configured to the UE through cell-specific (cell-specific) RRC signaling or system information, or may be configured through UE-specific (UE-specific) RRC signaling, which is not limited in this embodiment of the present invention. The semi-static uplink and downlink (semi-static UL/DL) configuration period supports 0.125ms, 0.25ms, 0.5ms, 1ms, 2ms, 5ms, and 10ms for various subcarrier spacings (e.g., 15kHz, 30kHz, 120kHz, 240 kHz). In addition, a subcarrier spacing above 30kHz (> < 30kHz SCS), a 2.5ms semi-static UL/DL configuration period is supported. A subcarrier spacing above 60kHz (> ═ 60kHz SCS), supporting a 1.25ms semi-static UL/DL configuration period. For a 120kHz subcarrier spacing, a 0.625ms semi-static UL/DL configuration period is supported.

For example, fig. 5 shows a semi-static uplink and downlink configuration pattern with a semi-static uplink and downlink configuration period of 5ms and a time slot of 0.5 ms. Wherein, the resource distribution in the pattern is downlink resource-unknown resource-uplink resource (DL-unknown-UL), and the network device may indicate the pattern of the uplink and downlink configuration of the terminal device through parameters (x1, x2, y1, y 2). Where x1 represents the number of slots of the downlink resource, x2 represents the number of symbols of the downlink resource, y2 represents the number of symbols of the uplink resource, and y1 represents the number of slots of the uplink resource. As shown in fig. 5, x1 may have a value of 3, x2 may have a value of 7, y2 may have a value of 7, and y1 may have a value of 3. Wherein, the resource between the downlink resource and the uplink resource in the configuration period represents an unknown (unkow) resource.

It should be understood that the uplink and downlink configuration pattern shown in fig. 5 is only an exemplary pattern, and the period and the size of the time slot of the uplink and downlink configuration may vary according to actual situations, for example, the configuration period may be 2.5ms, which corresponds to 5 time slots of 0.5ms, and the embodiment of the present application is not limited thereto.

For example, taking a period of 5 timeslots as an example, some typical uplink and downlink configuration options in actual product implementation may include: DDDSU, where each capital letter in DDDSU represents a time slot. The time slot represented by D is a downlink resource, the time slot represented by S is a special time slot, and the time slot represented by U is an uplink resource. The special slot may include a symbol as a downlink resource, an unknown symbol, and a symbol as a downlink resource. One typical uplink and downlink symbol configuration in a special timeslot includes: ddddddddddddxxuu. Each lower case letter represents a symbol, the symbol represented by the letter d is a downlink resource, the symbol represented by the letter x is an unknown symbol, and the symbol represented by the letter u is an uplink resource. At least one of the two symbols of the resource type x is used for a guard interval (gap) between uplink and downlink resources.

For the SSB mapping pattern 2 mentioned above (SSB pattern corresponding to Case C), when L is 8, under some typical uplink and downlink configurations, such as the above-mentioned uplink and downlink configuration of 5 slots, DDDSU, where S is ddddddddddddddddxxuu, the maximum number of SSBs cannot be transmitted within a time window of 5 ms. Specifically, as shown in fig. 4, SSB is distributed in the first 4 slots in the 5ms time window of mapping pattern 2. Again, based on the uplink and downlink configuration shown in fig. 5, the pattern in the first 4 slots shown in fig. 6 can be derived. Specifically, as shown in fig. 6, 8 candidate SSBs are mapped in 4 slots according to mapping pattern 2, and since the resource types of the 10 th and 11 th symbols in the fourth slot (slot with resource type S) of the uplink and downlink configuration are x, and since at least one of the two symbols with resource type x is used for a guard interval (gap) between uplink and downlink resources, all the symbols with resource type x cannot be used for downlink transmission, and therefore, the uplink and downlink configuration collides with the resource of the last SSB of mapping pattern 2, which results in that the last SSB in mapping pattern 2 is knocked down, and in such uplink and downlink configuration, if SSBs are transmitted according to pattern 2, there are only 7 SSBs at most in one time detection window (5 ms). Therefore, the SSB coverage of the resource with the subcarrier spacing of 30kHz is poor, and the efficiency of accessing the terminal equipment to the network is influenced.

In the embodiment of the present application, in the case of the uplink and downlink configuration, pattern 2 is avoided being used to send the SSB, but pattern 1 is used to send the SBB, and since there is no collision when pattern 1 is used to send the SSB, the maximum number of SSBs transmitted in one time window can be ensured to be 8 in the embodiment of the present application. Therefore, the access network efficiency of the terminal equipment can be improved.

Specifically, when the above-described uplink and downlink configuration, that is, the uplink and downlink configuration of 5 slots is DDDSU, where S is ddddddddddddddxxuu, the above-described collision does not occur when L is 8 for pattern 1 (SSB pattern corresponding to Case B). Specifically, as shown in fig. 7, 8 candidate SSBs are mapped in 4 slots according to pattern 1, and since the 8 SSBs optionally map resources all falling into downlink resources, in a slot with resource type S, two SSBs are both located on a symbol with resource type d in the slot, thereby avoiding collision of SSD located on a symbol with resource type x. Therefore, if the SSB is transmitted according to the pattern 1, the embodiment of the present invention can avoid the collision problem of transmitting the SSB according to the pattern 2, and can improve the efficiency of the terminal device accessing the network.

By way of example, and not limitation, a method of communication in accordance with an embodiment of the present application is described below in conjunction with fig. 8.

Fig. 8 is a schematic flow chart diagram of a method of communication in accordance with one embodiment of the present invention. The method shown in fig. 8 may be applied to any of the communication systems described above. Fig. 8 depicts a method of communication of an embodiment of the present application from a system perspective. Specifically, the method 800 shown in fig. 8 includes:

the network device determines 810 an SSB pattern.

Specifically, the SSB pattern in the embodiment of the present application may be a first pattern or a second pattern.

For example, in the embodiment of the present application, the first pattern may be pattern 1, i.e., a pattern corresponding to L ═ 8 and Case B in the foregoing; the second pattern may be pattern 2, that is, the pattern corresponding to Case C, where L is equal to 8, it should be understood that the embodiment of the present application is not limited thereto, and in this embodiment of the present application, the first pattern may also be referred to as a first SSB mapping pattern, a first SSB resource mapping pattern, or the like; the second pattern may also be referred to as a second SSB mapping pattern, a second SSB pattern, or a second SSB resource mapping pattern, and the like, and the embodiments of the present application are not limited thereto.

It is to be appreciated that the SSB pattern can correspond to a mapping pattern of SSBs within a 5ms time window at 810.

Optionally, as an embodiment, the SSB pattern is a mapping pattern of SSBs transmitted on a carrier frequency band.

Optionally, the one carrier frequency band may be one of the following carrier frequency bands:

Optionally, the subcarrier spacing SCS of the SSB corresponding to the SSB pattern is 30 kHz.

Specifically, as shown in table 1, when the SCS is 30kHz, the pattern corresponding to the carrier frequency band n5, the carrier frequency band n6, the carrier frequency band n41, the carrier frequency band n77, the carrier frequency band n78 and the carrier frequency band n79, where L ═ 8 is the pattern corresponding to Case 3, that is, the second pattern, in other words, the SSB pattern corresponding to the above-mentioned one carrier frequency band is uniquely fixed. As can be seen from the above description, in a normal uplink and downlink configuration, for example, the uplink and downlink configuration of 5 timeslots is DDDSU, where S is ddddddddddddddddddxxuu, the second pattern conflicts with the uplink and downlink configuration, and the efficiency of the terminal device accessing the network is affected.

In the embodiment of the present application, for the one carrier frequency band, the SSB pattern is not fixed, and the network device may select the SSB pattern, for example, the network device may select the SSB pattern as the first pattern or the second pattern, so as to avoid a resource conflict problem caused by fixing the pattern corresponding to the one carrier frequency band as the second pattern in the prior art.

Specifically, the network device may select whether the SSB pattern is the first pattern or the second pattern according to the needs of the actual scenario.

For example, in a cell or a scenario where coverage is not limited, the network device may determine the SSB pattern to be a second pattern; in a coverage limited cell or scenario, the network device may determine the SSB pattern to be a first pattern.

For another example, in a scenario where an NR carrier and an LTE carrier coexist, the network device may determine that the SSB pattern is a first pattern; in a scenario with only NR carriers, or in a scenario where NR carriers do not coexist with LTE carriers, the network device may determine the SSB pattern to be the second pattern.

It should be understood that the above listed scenarios for determining the SSB pattern are only illustrative, and the network device may also determine the SSB pattern according to other conditions in other scenarios, and the embodiments of the present application are not limited thereto.

It should also be understood that, the case where the SSB pattern is only one pattern determined from two patterns is listed above, but the embodiment of the present application is not limited thereto, for example, the SSB pattern may be one pattern determined by the network device from a plurality of patterns, for example, 3 patterns, 4 patterns, or more patterns.

It should also be understood that, only an example of determining the SSB pattern at one carrier frequency band in the case that the SCS is 30kHz and L is 8 is given here, but the embodiment of the present application is not limited thereto, and those skilled in the art may make various modifications according to the above-described embodiment, for example, the SCS may be 15kHz, 60kHz, 120kHz or 240 kHz; the size of the uplink and downlink configuration period corresponding to the SSB pattern is also not limited to 5ms, and may be, for example, 0.125ms, 0.25ms, 0.5ms, 1ms, 2ms, 5ms, or 10ms, and for example, L may also take 4, 16, or another value, and the embodiment of the present application is not limited thereto.

The network device sends the indication information 820.

Correspondingly, the terminal equipment receives the indication information.

The indication information is used to indicate that the SSB pattern is a first pattern or a second pattern.

The indication information in the embodiments of the present application may have various forms, and will be described below by way of example.

Optionally, in an implementation, the indication information includes first information or an information sequence.

Optionally, the first information is carried on one bit. Wherein a bit of 0 indicates a first pattern and a bit of 1 indicates a second pattern; or the bit of 0 indicates the second pattern and the bit of 1 indicates the first pattern.

Optionally, the first information is carried on reserved bits or newly added bits.

Optionally, the first information may be information carried in a broadcast channel PBCH, a downlink shared channel PDSCH, or radio resource control RRC signaling.

Accordingly, as an embodiment, in 820, the network device sends the indication information, including:

and the network equipment sends the first information through a broadcast channel PBCH, a downlink shared channel PDSCH or a radio resource control RRC signaling.

Correspondingly, the receiving of the indication information by the terminal device includes:

and the terminal equipment receives the first information carried in a broadcast channel PBCH, a downlink shared channel PDSCH or a radio resource control RRC signaling.

By way of example, and not limitation, several specific implementations of the first information are described below in connection with specific examples, respectively.

The first method is as follows:

the first information is carried on the reserved bits.

For example, the first information is carried in reserved bits of PBCH.

Optionally, the reserved bits are the last bit or the last bit in the time domain indication bits of the PBCH.

For example, the reserved bits are bits a6 or a7 reserved in a PBCH payload (payload).

Specifically, the time domain indication bits in the PBCH include: a0, a1, a2, a3, a4, a5, a6, a7,. Wherein, bits a0, a1, a2 and a3 are the lower 4 bits of a System Frame Number (SFN), a4 is a half frame indicating bit, when the maximum SSB number is equal to 64, a5, a6 and a7 are the 4 th, 5th and 6 th bits of the SSB time domain index indicating bits, otherwise, when the maximum SSB number is not equal to 64 (e.g., 4,8 and 16), for example, when the maximum SSB number is equal to 8, a5 is used for other purposes, and a6 and a7 are reserved bits.

In other words, at the low frequency band, there are at least 2 unused spare bits in the information bits of the broadcast channel, e.g., bits a6 and a 7. Therefore, the embodiment of the present application may indicate the SSB pattern of the terminal device through the reserved bit a6 or a 7.

For example, a reserved bit of 0 indicates a first pattern, and a reserved bit of 1 indicates a second pattern; or the reserved bit is 0 to indicate the second pattern, and 1 to indicate the first pattern.

Specifically, after the network device determines the SSB pattern, the SSB pattern is indicated by a reserved bit of the PBCH, and the terminal device determines the SSB pattern according to a value of the reserved bit after acquiring the PBCH.

The second method comprises the following steps:

the first information is carried on the newly added bits.

For example, the first information is carried on the newly added 1 bit in the remaining minimum system information RMSI carried by the PDSCH.

For example, a bit of 0 in the added 1 bit indicates a first pattern, and a bit of 1 indicates a second pattern; or the second pattern is indicated by 0 in the newly added 1 bit, and the first pattern is indicated by 1.

Specifically, after the network device determines the SSB pattern, the SSB pattern is indicated by the newly added 1 bit in the RMSI, and the terminal device determines the SSB pattern according to the value of the newly added 1 bit after acquiring the RMSI.

Specifically, the network device may indicate a downlink control channel PDCCH resource through PBCH, and indicate a PDSCH resource in downlink control Information DCI carried in the PDCCH, and the terminal device may detect an RMSI in the PDSCH, and determine an SSB pattern according to a value of a newly added 1-bit in the RMSI (also called System Information Block 1 (SIB 1)).

The third method comprises the following steps:

the first information is carried on the newly added bits.

For example, the first information is carried on 1 bit newly added in a Measurement Object (MO) in the RRC signaling.

The NR indicates, inside the MO, the information of the SSBs actually transmitted by means of a full bit map, which represents the set of positions of all SSBs of the neighborhood. When the position set of the SSB is located in one of the above carrier frequency bands, since the SSB position in the one carrier frequency band is not fixed, the terminal device cannot determine the time domain position of the SSB when measuring the SSB of the neighboring cell, and it is difficult to obtain an accurate Reference Signal Receiving Power (RSRP) value. Therefore, the embodiment of the present application adds 1 bit to the MO to indicate the SSB pattern in one carrier frequency band.

In other words, the MO includes a configuration parameter required by the terminal device to perform mobility (mobility) measurement, and when two carrier frequency bands appear in a cell list in the configuration parameter and include one carrier frequency band in the foregoing, the network device needs to indicate an SSB pattern in the carrier frequency band of the terminal device, so that the terminal device can perform accurate mobility measurement according to the SSB pattern. Specifically, the network device may indicate the SSB pattern by adding 1 bit in the MO.

It should be understood that the one carrier frequency band may be a carrier frequency band in the local cell where the terminal device is located, or may also be a carrier frequency band in an adjacent cell, and the embodiment of the present application is not limited thereto.

Specifically, after the network device determines the SSB pattern, the network device sends an MO through RRC signaling, adds 1 bit in the MO to indicate the SSB pattern, and after acquiring the MO, the terminal device determines the SSB pattern according to a value of the added 1 bit. And then the terminal equipment can know the resource position of the SSB according to the SSB pattern, and further can carry out accurate mobility measurement.

Some specific implementations of indicating that the information is the first information are described above.

Some implementations are described below in which the indication information is a sequence of information.

Optionally, the information sequence is an information sequence of PBCH.

the network device sends the information sequence of PBCH.

and the terminal equipment receives the information sequence of PBCH.

By way of example, and not limitation, specific implementations of information sequences are described below in connection with specific examples, respectively.

The method is as follows:

the information sequence includes a scrambling sequence of the PBCH.

Specifically, the network device may indicate the SSB pattern by a scrambling sequence, e.g., the network device may indicate the SSB pattern by information u carried in the scrambling sequence, e.g., u indicates a first pattern for a first value and u indicates a second pattern for a second value. Optionally, u is 1 bit, u is 0 indicating a first pattern, and 1 indicating a second pattern; or u is 0 indicating the second pattern and 1 indicating the first pattern. It should be understood that the number of bits of u in this embodiment is not limited to 1, and the value of u may also be any two different values different from 0 or 1, and this embodiment is not limited thereto.

Specifically, the network device may perform the scrambling of the PBCH by the following equation:

B(i)＝(b(i)+c(i+vM_bit+LuM_bit))mod 2

wherein B (i) is the scrambled information bit stream, b (i) is the MIB information bit stream before scrambling, c (i + vM)_bit+LuM_bit) The term being a scrambling sequence, M_bitV is related to the information value corresponding to the last 2 bits or 3 bits of the SFN for the length of the information bit stream. i is from 0 to M_bit-1. L represents the maximum number of SSBs included in the SSB detection window, and is 8, and optionally, L may be 4, 16, or 64.

Specifically, after the network device determines the SSB pattern, the SSB pattern is indicated by u in the scrambling sequence of the PBCH, and after the terminal device acquires the PBCH, the value of u is determined according to the scrambling sequence, and the SSB pattern is determined according to the value of u.

It should be understood that the above scrambling formula is merely illustrative and that a person skilled in the art may make various possible variations, e.g. increasing or decreasing some parameters, e.g. the above formula may be modified as:

B(i)＝(b(i)+c(i+uM_bit))mod 2

or some coefficients may be set in the above formula, linear scaling is performed, or the above formula is not limited to the form of the above polynomial sum, for example, the above formula may be in the form of the polynomial product, and the like, and the embodiments of the present application are not limited thereto.

The fifth mode is as follows:

the information sequence comprises a sequence of a demodulation reference signal (DMRS) of the PBCH.

In a possible implementation manner, the sequence of the DMRS includes a sequence obtained according to a first initialization value and a sequence obtained according to a second initialization value, where the first initialization value corresponds to the first pattern and the second initialization value corresponds to the second pattern.

It should be understood that the first/second initialization value corresponds to the first/second pattern, and may also be expressed as the first/second initialization value indicates the first/second pattern, or the first/second initialization value is a value determined according to the first/second pattern, and the embodiment of the present application is not limited thereto.

For example, the initialization value of the sequence of the DMRS is expressed in the form of:

c_init＝2¹²(i_SSB+1)(N_cell/4+1)+2⁷(i_SSB+1)+2(N_cell mod 4)+u

wherein, c_initInitialization value, i, for PBCH DMRS sequence_SSBIs the index value of SSB, N_cellIs a cell identity.

Wherein, when u is a first value, c_initRepresenting a first initialization value, said first initialization value indicating a first pattern, and c being a second value_initRepresenting a second initialization value, the second initialization value being indicative of a second pattern.

Optionally, u is 1 bit, u is 0 indicating a first pattern, and 1 indicating a second pattern; or u is 0 indicating the second pattern and 1 indicating the first pattern. It should be understood that the number of bits u in this embodiment is not limited to 1 bit, and u may also take any two different values different from 0 or 1, and this embodiment is not limited thereto.

Specifically, after the network device determines the SSB pattern, the SSB pattern is indicated by u in the formula of the initialization value, and after the terminal device acquires the DMRS sequence, the initialization value can be obtained according to the received DMRS sequence, so that the value of u can be determined, and the SSB pattern is determined according to the value of u.

It should be understood that the above method of sequence initialization is only an example, and the embodiments of the present application do not exclude that other sequence generation formulas are possible. In other words, the above formula of the initialization value is only illustrative, and those skilled in the art may make various possible modifications, for example, increasing or decreasing some parameters, or some coefficients or factors may be set in the above formula, linear scaling, etc., for example, the above formula may be modified as follows:

c_init＝2¹²(i_SSB+1)(N_cell/4+1)+2⁷(i_SSB+1)+2(N_cell mod 4)+a u

where a represents a scaling factor, which may be a constant not equal to 0.

Or the above formula is not limited to the form of the above polynomial sum, for example, the above formula may be in the form of the product of polynomials, and the like, and the embodiment of the present application is not limited thereto.

Alternatively, in another possible implementation manner, the sequence of the DMRS includes a sequence obtained according to a first cyclic shift value and a sequence obtained according to a second cyclic shift value, where the first cyclic shift value corresponds to the first pattern and the second cyclic shift value corresponds to the second pattern.

It should be understood that the first/second cyclic shift value corresponds to the first/second pattern, and may also be expressed as the first/second cyclic shift value indicates the first/second pattern, or the first/second cyclic shift value is a value determined according to the first/second pattern, and the embodiment of the present application is not limited thereto.

Specifically, after the network device determines the SSB pattern, the SSB pattern is indicated by a cyclic shift value, and after the terminal device acquires the DMRS sequence, the terminal device can obtain the cyclic shift value according to the received DMRS sequence, and thus can determine the SSB pattern according to the cyclic shift value.

It should be understood that, for the above-mentioned modes one to three, the indication information is required to directly indicate the SSB pattern, and therefore, these three modes may also be collectively referred to as an explicit indication mode. For the mode four and the mode five, the SSB pattern is indirectly indicated by the information sequence, and therefore, these two modes may also be referred to as an implicit indication mode, and the embodiment of the present application is not limited thereto.

From the above description, it can be derived that in the above 5 mode: the indication information in the first, fourth and fifth modes is information in the SSB, for example, the indication information is in the SSB: reserved bits in PBCH, a scrambling sequence of PBCH and a scrambling sequence of DMRS of PBCH.

Therefore, regarding the manner one, the manner four, and the manner five, for the terminal device, the embodiments of the present application may also be collectively described as determining the SSB pattern according to the SSB. For network devices, the embodiments of the present application may also be described collectively as indicating the SSB pattern by SSB.

For the second mode, for the terminal device, the embodiments of the present application may also be described in a unified manner to determine the SSB pattern according to the PDSCH. For network devices, the embodiments of the present application may also be described collectively as indicating the SSB pattern through the PDSCH.

For the third mode, for the terminal device, the embodiments of the present application may also be described in a unified manner as determining the SSB pattern according to RRC signaling. For the network device, the embodiments of the present application may also be described in a unified manner as indicating the SSB pattern through RRC signaling.

Those skilled in the art can make various modifications according to the embodiments of the present application, and can combine various different implementations to make a general overview, and the embodiments of the present application are not limited thereto.

Optionally, as an embodiment, after the network device determines the SSB pattern, the method of the embodiment of the present application further includes the network device sending the first SSB according to the SSB pattern.

Correspondingly, the terminal equipment detects the first SSB according to the SSB pattern.

Optionally, as another embodiment, the method further includes the network device sending a second SSB.

Accordingly, the terminal device detects the second SSB.

The first SSB and the second SSB may be the same SSB or different SSBs. The embodiments themselves are not limited thereto.

It should be understood that the indication information (e.g., reserved bits in PBCH, scrambling sequence of PBCH, and scrambling sequence of DMRS of PBCH) may be located in the first SSB described above, or may be located in the second SSB above, for manners one, four, and five.

Optionally, for modes one, four, and five, when the indication information (e.g., the reserved bits in the PBCH, the scrambling sequence of the PBCH, and the scrambling sequence of the DMRS of the PBCH) is located in a second SSB, the second SSB is transmitted on time resources before the first SSB in the time resource dimension. I.e. the terminal device determines the SSB pattern after receiving the second SSB.

Optionally, for the first, fourth, and fifth modes, when the indication information (e.g., the reserved bits in the PBCH, the scrambling sequence of the PBCH, and the scrambling sequence of the DMRS of the PBCH) is located in the first SSB, the terminal device determines the SSB pattern while receiving the first SSB. Specifically, the first SSB may be any other SSB except the last SSB in the SSB time window corresponding to the SSB pattern.

Optionally, in a possible implementation, the method further includes the network device sending the RMSI. Accordingly, the terminal device receives the RMSI.

In view of the second aspect described above, in the second aspect,

in one possible implementation, the RMSI is sent before the network device sends the first SSB. Accordingly, the terminal device receives the RMSI before receiving the first SSB according to the SSB pattern.

Optionally, in a possible implementation manner, the method further includes the network device sending RRC signaling. Accordingly, the terminal device receives RRC signaling.

In view of the third aspect of the above method,

in one possible implementation, the RRC signaling is sent before the network device sends the first SSB. Accordingly, RRC signaling is received before the terminal device receives the first SSB according to the SSB pattern.

It should be understood that, in the above embodiment, only an example in which the SSB pattern indicated by the indication information is one of two patterns, that is, the first pattern and the second pattern, is listed, but the embodiment of the present application is not limited thereto.

For example, the SSB pattern may be a set of SSB patterns consisting of a plurality of patternsAn SSB pattern. Correspondingly, the indication information indicating the SSB pattern may be modified accordingly. For example, when the SSB pattern set includes n SSB patterns, the bit number of the indication information may be an integer greater than or equal to y, where y is a value satisfying 2^y>N is the smallest integer.

830, the terminal device determines the SSB pattern according to the indication information.

Specifically, the terminal device determines the SSB pattern as the first pattern or the second pattern according to the indication information.

After the terminal device determines the SSB pattern, the terminal device may detect a first SSB sent by the network device according to the SSB pattern, so as to perform random access according to the first SSB.

Specifically, after determining the SSB pattern, how the network device sends the first SSB, and how the terminal device detects the first SSB according to the SSB pattern after determining the SSB pattern, and how to perform the random access according to the first SSB refer to the description in the existing standard, which is not described herein again.

It is clearly understood by those skilled in the art that the various numbers such as "first", "second", etc. are used for descriptive convenience only and are not intended to limit the embodiments of the present application.

Fig. 9 is a schematic diagram of a communication method according to another implementation of the present application. The method shown in fig. 9 may be applied to any of the communication systems described above. Fig. 9 illustrates a method of communication of an embodiment of the present application from a system perspective. Specifically, the method 900 shown in fig. 9 includes:

the network device determines 910 an SSB pattern.

Specifically, the SSB pattern is a first pattern or a second pattern.

Specifically, the mode of determining the SSB pattern by the network device may refer to the description in 810, and is not described herein again to avoid repetition.

The network device sends 920 a first SSB according to the SSB pattern.

Correspondingly, the terminal equipment determines an SSB pattern and detects a first SSB according to the SSB pattern.

In one possible implementation manner, the determining, by the terminal device, an SSB pattern includes:

and the terminal equipment determines the SSB pattern according to the information sequence.

It should be understood that, the manner in which the terminal device determines the SSB pattern according to the first information or the information sequence may refer to the description in fig. 8 above, and in order to avoid repetition, details are not described here.

It should be understood that the above examples of fig. 1 to 9 are only for assisting the skilled person in understanding the embodiments of the present invention, and are not intended to limit the embodiments of the present invention to the specific values or specific scenarios illustrated. It will be apparent to those skilled in the art that various equivalent modifications or variations are possible in light of the examples given in figures 1 to 9, and such modifications or variations also fall within the scope of embodiments of the present invention.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

The method for data transmission according to the embodiment of the present invention is described in detail above with reference to fig. 1 to 9, and the apparatus according to the embodiment of the present invention is described below with reference to fig. 10 to 13.

Fig. 10 is a schematic structural diagram of a communication device according to an embodiment of the present application, where the communication device 1000 may include:

a processing unit 1010 and a transceiver unit 1020.

Specifically, the receiving and sending unit is configured to receive indication information, where the indication information is used to indicate that an SSB pattern is a first pattern or a second pattern;

and the processing unit is used for determining the SSB pattern according to the indication information.

Optionally, the indication information comprises first information or an information sequence.

Optionally, the first information is carried on one bit, where a bit of 0 indicates a first pattern, and a bit of 1 indicates a second pattern.

Optionally, the transceiver unit is specifically configured to receive the first information carried in a broadcast channel PBCH, a downlink shared channel PDSCH, or a radio resource control RRC signaling.

Optionally, the first information is carried on reserved bits of PBCH.

Optionally, the first information is carried on 1 bit added in the remaining minimum system information RMSI carried by the PDSCH.

Optionally, the first information is carried in 1 bit added in a measurement target MO in RRC signaling.

Optionally, the transceiver unit is specifically configured to receive the information sequence carried in PBCH.

Optionally, the information sequence includes a scrambling sequence of PBCH or a demodulation reference signal, DMRS, sequence of PBCH.

Optionally, the sequence of the DMRS includes a sequence obtained according to a first initialization value and a sequence obtained according to a second initialization value, where the first initialization value corresponds to the first pattern and the second initialization value corresponds to the second pattern;

alternatively, the first and second electrodes may be,

Optionally, the SSB pattern is a pattern of SSBs transmitted on one carrier frequency band.

Optionally, the one carrier frequency band is one of the following carrier frequency bands:

The communication apparatus 1000 provided in this application corresponds to the process executed by the terminal device in the foregoing embodiment of the method in fig. 8 or 9, and the functions of each unit/module in the communication apparatus may refer to the description above, which is not described herein again.

It should be understood that the communication device shown in fig. 10 may be a terminal device, or may be a chip or an integrated circuit mounted in the terminal device.

Taking a communication device as an example of a terminal device, fig. 11 is a schematic structural diagram of the terminal device provided in the embodiment of the present application, which is convenient for understanding and illustration, and in fig. 11, the terminal device takes a mobile phone as an example. Fig. 11 shows only the main components of the terminal device. The terminal device 1100 shown in fig. 11 includes a processor, a memory, a control circuit, an antenna, and an input-output means. The processor is mainly configured to process the communication protocol and the communication data, control the entire terminal device, execute a software program, and process data of the software program, for example, to support the terminal device to perform the actions described in the above method embodiments. The memory is used primarily for storing software programs and data. The control circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The control circuit and the antenna together, which may also be called a transceiver, are mainly used for transceiving radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user.

When the terminal device is turned on, the processor can read the software program in the storage unit, interpret and execute the instruction of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor outputs a baseband signal to the radio frequency circuit after performing baseband processing on the data to be sent, and the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data.

Those skilled in the art will appreciate that fig. 11 shows only one memory and processor for ease of illustration. In an actual terminal device, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, and the like, which is not limited in this application.

As an alternative implementation manner, the processor may include a baseband processor and a central processing unit, where the baseband processor is mainly used to process a communication protocol and communication data, and the central processing unit is mainly used to control the whole terminal device, execute a software program, and process data of the software program. The processor of fig. 11 may integrate the functions of the baseband processor and the central processing unit, and those skilled in the art will understand that the baseband processor and the central processing unit may also be independent processors, and are interconnected through a bus or the like. Those skilled in the art will appreciate that the terminal device may include a plurality of baseband processors to accommodate different network formats, the terminal device may include a plurality of central processors to enhance its processing capability, and various components of the terminal device may be connected by various buses. The baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.

In the embodiment of the present invention, the antenna and the control circuit having transceiving functions can be regarded as the transceiving unit 111 of the terminal device 1100, for example, for supporting the terminal device to perform transceiving functions as performed by the terminal device in the method implementation in fig. 8 or 9. A processor having a processing function is considered as the processing unit 112 of the terminal device 1100, which corresponds to the processing unit 1010 in fig. 10. As shown in fig. 11, the terminal device 1100 includes a transceiving unit 111 and a processing unit 112. The transceiving unit may also be referred to as a transceiver, a transceiving device, etc., and corresponds to the transceiving unit 1020 in fig. 10. Optionally, a device for implementing a receiving function in the transceiver unit 111 may be regarded as a receiving unit, and a device for implementing a sending function in the transceiver unit 111 may be regarded as a sending unit, that is, the transceiver unit 111 includes a receiving unit and a sending unit, the receiving unit may also be referred to as a receiver, an input port, a receiving circuit, and the like, and the sending unit may be referred to as a transmitter, a sending circuit, and the like.

The processing unit 112 may be configured to execute the instructions stored in the memory, so as to control the transceiver unit 111 to receive and/or transmit signals, thereby implementing the functions of the terminal device in the above method embodiments. As an implementation manner, the function of the transceiving unit 111 may be considered to be implemented by a transceiving circuit or a dedicated chip for transceiving.

It should be understood that terminal device 1100 shown in fig. 11 is capable of implementing various processes involving the terminal device in the method embodiments of fig. 8 or 9. The operations and/or functions of the respective modules in the terminal device 1100 are respectively for implementing the corresponding flows in the above-described method embodiments. Specifically, reference may be made to the description of the above method embodiments, and the detailed description is appropriately omitted herein to avoid redundancy.

Fig. 12 is a schematic structural diagram of a communication device according to an embodiment of the present application, where the device 1200 may include:

a processing unit 1210 and a transceiving unit 1220.

Specifically, the processing unit is used for determining an SSB pattern;

a sending unit, configured to send indication information, where the indication information is used to indicate that the SSB pattern is a first pattern or a second pattern.

Optionally, the transceiver unit is specifically configured to send the first information through a broadcast channel PBCH, a downlink shared channel PDSCH, or radio resource control RRC signaling.

Optionally, the first information is carried on reserved bits of PBCH.

Optionally, the transceiver unit is specifically configured to send the information sequence of PBCH.

alternatively, the first and second electrodes may be,

The communication apparatus provided in this application is a process executed by the network device in the embodiment of the method corresponding to fig. 8 or 9, and the functions of each unit/module in the communication apparatus may refer to the description above, which is not described herein again.

It should be understood that the communication device described in fig. 12 may be a network device, and may also be a chip or an integrated circuit installed in the network device.

Taking a communication device as an example of a network device, fig. 13 is a schematic structural diagram of a network device provided in an embodiment of the present application, which may be, for example, a schematic structural diagram of a base station. As shown in fig. 13, the network device 1300 can be applied to the system shown in fig. 1, and performs the functions of the network device in the above method embodiments.

The network device 1300 may include one or more radio frequency units, such as a Remote Radio Unit (RRU) 131 and one or more baseband units (BBUs) (which may also be referred to as digital units, DUs) 132. The RRU131 may be referred to as a transceiver unit 131, which corresponds to the transceiver unit 1220 in fig. 12, and optionally may also be referred to as a transceiver, transceiver circuit, or transceiver, etc., which may include at least one antenna 1311 and a radio frequency unit 1312. The RRU131 is mainly used for transceiving radio frequency signals and converting the radio frequency signals and baseband signals, for example, for sending precoding matrix information to a terminal device. The BBU132 is mainly used for performing baseband processing, controlling a base station, and the like. The RRU131 and the BBU132 may be physically disposed together or may be physically disposed separately, i.e., distributed base stations.

The BBU132 is a control center of the base station, and may also be referred to as a processing unit 132, and may correspond to the processing unit 1210 in fig. 12, and is mainly used for completing baseband processing functions, such as channel coding, multiplexing, modulating, spreading, and the like. For example, the BBU (processing unit) can be used to control the base station to execute the operation flow related to the network device in the above method embodiment.

In an example, the BBU132 may be formed by one or more boards, and the boards may support a radio access network of a single access system (e.g., an LTE network) together, or may support radio access networks of different access systems (e.g., an LTE network, a 5G network, or other networks) respectively. The BBU132 also includes a memory 1321 and a processor 1322. The memory 1321 is used to store the necessary instructions and data. The processor 1322 is configured to control the base station to perform necessary actions, for example, to control the base station to perform the operation procedure related to the network device in the above-described method embodiment. The memory 1321 and processor 1322 may serve one or more boards. That is, the memory and processor may be provided separately on each board. Multiple boards may share the same memory and processor. In addition, each single board can be provided with necessary circuits.

It should be understood that the network device 1300 shown in fig. 13 is capable of implementing the various processes involving the network device in the method embodiments of fig. 8 or 9. The operations and/or functions of the modules in the network device 1300 are respectively for implementing the corresponding flows in the above method embodiments. Specifically, reference may be made to the description of the above method embodiments, and the detailed description is appropriately omitted herein to avoid redundancy.

The embodiment of the application also provides a processing device, which comprises a processor and an interface; the processor is configured to perform the method of communication in any of the above method embodiments.

It should be understood that the processing means may be a chip. For example, the processing Device may be a Field-Programmable Gate Array (FPGA), an Application-Specific Integrated Circuit (ASIC), a System on Chip (SoC), a Central Processing Unit (CPU), a Network Processor (NP), a Digital Signal processing Circuit (DSP), a Microcontroller (MCU), a Programmable Logic Device (PLD), or other Integrated chips.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor. To avoid repetition, it is not described in detail here.

It should be noted that the processor in the embodiments of the present invention may be an integrated circuit chip having signal processing capability. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The processor may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in embodiments of the invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM, enhanced SDRAM, SLDRAM, Synchronous Link DRAM (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the present application further provides a communication system, which includes the foregoing network device and terminal device.

The present application further provides a computer-readable medium, on which a computer program is stored, where the computer program is executed by a computer to implement the method for communication in any of the above method embodiments.

The embodiment of the present application further provides a computer program product, and when executed by a computer, the computer program product implements the communication method in any of the above method embodiments.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a Digital Video Disk (DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.

It should be understood that the above describes a method for communication during downlink transmission in a communication system, but the present application is not limited thereto, and optionally, a similar scheme as above may also be adopted during uplink transmission, and details are not described here again to avoid repetition.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

As used in this specification, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being, a process running on 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 the computing device can be a component. One or more components can reside within a process and/or thread of execution and a component can be localized on one computer and/or distributed between 2 or more computers. In addition, these components can execute from various computer readable media having various data structures stored thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from two components interacting with another component in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).

It should also be understood that reference herein to first, second, third, fourth, and various numerical designations is made only for ease of description and is not intended to limit the scope of the embodiments of the present application.

It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone.

Those of ordinary skill in the art will appreciate that the various illustrative logical blocks and steps (step) described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

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

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

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

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions (programs). The procedures or functions described in accordance with the embodiments of the present application are generated in whole or in part when the computer program instructions (programs) are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of communication, comprising:

a terminal device receives indication information, wherein the indication information is used for indicating that an SSB pattern is a first pattern or a second pattern, and the indication information comprises a sequence of a demodulation reference signal (DMRS) of a PBCH (physical broadcast channel)

alternatively, the first and second electrodes may be,

the sequence of the DMRS comprises a sequence obtained according to a first cyclic shift value and a sequence obtained according to a second cyclic shift value, wherein the first cyclic shift value corresponds to the first pattern, and the second cyclic shift value corresponds to the second pattern;

and the terminal equipment determines the SSB pattern according to the indication information.

2. A method of communication, comprising:

the network equipment determines an SSB pattern;

the network equipment sends indication information, wherein the indication information is used for indicating that the SSB pattern is a first pattern or a second pattern, and the indication information comprises a sequence of demodulation reference signals (DMRS) of a PBCH (physical broadcast channel)

alternatively, the first and second electrodes may be,

3. The method according to claim 1 or 2,

the SSB pattern corresponds to a SSB with a subcarrier spacing SCS of 30 kHz.

4. The method according to claim 1 or 2,

the SSB pattern is a pattern of SSBs transmitted on one carrier frequency band.

5. The method of claim 4, wherein the one carrier frequency band is one of the following carrier frequency bands:

6. A communications apparatus, comprising:

a transceiver unit configured to receive indication information indicating whether the SSB pattern is the first pattern or the second pattern, the indication information including a sequence of a demodulation reference signal (DMRS) of a PBCH (physical broadcast channel)

alternatively, the first and second electrodes may be,

7. A communications apparatus, comprising:

a processing unit for determining an SSB pattern;

a transmitting unit configured to transmit indication information indicating that the SSB pattern is a first pattern or a second pattern, the indication information including a sequence of a demodulation reference signal (DMRS) of a PBCH (physical broadcast channel)

alternatively, the first and second electrodes may be,

8. The communication device according to claim 6 or 7,

the SSB pattern corresponds to a SSB with a subcarrier spacing SCS of 30 KHz.

9. The communication device according to claim 6 or 7,

the SSB pattern is a pattern of SSBs transmitted on one carrier frequency band.

10. The communications apparatus as claimed in claim 9, wherein the one carrier frequency band is one of the following carrier frequency bands:

11. A computer-readable storage medium, comprising a computer program which, when run on a computer, causes the computer to perform the method of any one of claims 1 to 5.