CN114070513B

CN114070513B - Transmission method, device and storage medium of downlink channel

Info

Publication number: CN114070513B
Application number: CN202010783459.9A
Authority: CN
Inventors: 王磊; 邢艳萍; 高雪娟
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2023-08-25
Anticipated expiration: 2040-08-06
Also published as: CN114070513A

Abstract

The embodiment of the application provides a transmission method, a device and a storage medium of a downlink channel. The embodiments of the application can ensure the system performance without influencing the traditional terminal and have better backward compatibility when improving the reliability of the RedCAP terminal such as the public downlink control channel and/or the broadcast downlink data channel by carrying out repeated transmission on the target downlink channel and carrying out combined reception on the RedCAP terminal.

Description

Transmission method, device and storage medium of downlink channel

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to a downlink channel transmission method, device, and storage medium.

Background

The Rel-17 version of the 5G system will be introduced into the Redcap (Reduced Capability) terminal. Terminals of this type may be regarded as terminals with lower capabilities than the existing normal terminals in Rel-15/16. In order to reduce the hardware cost, the Redcap terminal may take corresponding measures, such as reducing the supporting bandwidth, reducing the number of receiving antennas, and so on. A reduction in the number of receive antennas will greatly affect the reliability of downstream reception. Meanwhile, in order to reduce complexity of system design, the RedCap terminal needs to access the network through a normal initial access procedure, and needs to receive the same common downlink control channel as the existing terminal.

On the premise of ensuring backward compatibility, the reliability of the RedCAP terminal for the public downlink control channel is improved, and no clear solution exists at present.

Disclosure of Invention

Aiming at the existing problems, the embodiment of the application provides a transmission method, a device and a storage medium of a downlink channel.

In a first aspect, an embodiment of the present application provides a method for transmitting a downlink channel, including:

determining the repetition times of the network side for transmitting the target downlink channel;

and combining and receiving the target downlink channel sent by the network side based on the repetition times.

Optionally, the determining the repetition number of the target downlink channel sent by the network side includes:

receiving indication information sent by a network side, and determining the repetition number of a target downlink channel sent by the network side based on the indication information; or (b)

And determining the repetition times of the network side for transmitting the target downlink channel based on a protocol predefined mode.

Optionally, the receiving the indication information sent by the network side, and determining the repetition number of the target downlink channel sent by the network side based on the indication information includes:

receiving a system message sent by a network side, wherein a master information block MIB included in the system message carries the indication information, and determining the repetition number of a target downlink channel sent by the network side based on the indication information; or (b)

Receiving a Physical Broadcast Channel (PBCH) sent by a network side, wherein the PBCH carries the indication information, and determining the repetition number of a target downlink channel sent by the network side based on the indication information, wherein the indication information is an information bit added in a coding process except a MIB; or (b)

And receiving a target message, wherein the target message carries a Physical Cell Identifier (PCID), and determining the repetition number of the target downlink channel sent by the network side through a protocol predefined mode based on the PCID.

Optionally, the indication information carried in the MIB is carried by a 1-bit spark bit;

the determining the repetition number of the target downlink channel sent by the network side based on the indication information includes:

based on the first information borne by the spark bit, determining that the network side does not repeatedly send the target downlink channel, and repeating the steps for 0;

and determining the repetition number of the target downlink channel sent by the network side as a predefined number or a number determined according to preset information based on the second information carried by the spark bit.

Optionally, the preset information includes any one of the following:

the subcarrier spacing SCS of the synchronous signal and physical broadcast channel PBCH block and/or the frequency band available to the system;

The synchronization signal and the SCS of the subcarrier spacing SCS and/or the SCS of the type0-PDCCH of the physical broadcast channel PBCH block.

determining corresponding repetition levels based on the information carried by the spark bit, wherein different repetition levels correspond to different repetition times;

and determining the repetition times of the network side for transmitting the target downlink channel based on the repetition level.

Optionally, the indication information carried in the PBCH is carried by a spare bit of 2 bits;

determining corresponding repetition levels based on the information carried by the spark bit, wherein different repetition levels correspond to different repetition times; determining the repetition times of the network side for transmitting the target downlink channel based on the repetition level; or (b)

Determining that the network side repeatedly transmits the target downlink channel and corresponding repetition levels based on the information borne by the spark bit, wherein different repetition levels correspond to different repetition times; determining the repetition times of the network side for transmitting the target downlink channel based on the repetition level; or (b)

If the network side is determined not to repeatedly send the target downlink channel based on the information borne by the spark bit, the repetition number is 0.

Optionally, the determining, based on the PCID, the repetition number of the network side sending the target downlink channel in a predefined manner by a protocol includes:

and determining the repetition times corresponding to the target downlink channels under the target PCID sent by the network side based on the predefined protocol times.

Optionally, the determining, based on the predefined protocol manner, the repetition number of the target downlink channel sent by the network side includes:

determining the repetition times of the network side for transmitting the target downlink channel based on the terminal type of the network side; or (b)

Determining the repetition number of the target downlink channel sent by the network side based on the predefined number of protocols; or (b)

Determining the repetition number according to preset information, wherein the preset information comprises any one of the following:

Optionally, the target downlink channel includes a common downlink control channel or a broadcast downlink data channel.

Optionally, the indication information is pattern information.

In a second aspect, an embodiment of the present application further provides a method for transmitting a downlink channel, including:

determining the repetition times of a downlink channel of a transmission target;

and repeatedly sending the target downlink channel to the terminal based on the repetition times.

Optionally, the method further comprises:

and sending indication information to the terminal so that the terminal can determine the repetition number of the target downlink channel sent by the network side based on the indication information.

Optionally, the sending, to the terminal, indication information, so that the terminal determines, based on the indication information, the repetition number of the network side sending the target downlink channel, including:

transmitting a system message to the terminal, wherein a master information block MIB included in the system message carries the indication information so that the terminal can determine the repetition number of the target downlink channel transmitted by the network side based on the indication information; or (b)

Transmitting a Physical Broadcast Channel (PBCH) to the terminal, wherein the PBCH carries the indication information so that the terminal can determine the repetition number of the target downlink channel transmitted by the network side based on the indication information, and the indication information is an information bit added in the coding process except the MIB; or (b)

And sending a target message to the terminal, wherein the target message carries a Physical Cell Identifier (PCID) so that the terminal can determine the repetition number of the network side sending a target downlink channel according to a protocol predefined mode based on the PCID.

the first information carried by the spark bit is used for marking that the network side does not repeatedly send the target downlink channel, and the repetition number is 0;

and the second information carried by the spark bit is used for identifying that the repetition number of the target downlink channel sent by the network side is a predefined number or a number determined according to preset information.

Optionally, the preset information includes any one of the following:

and the information carried by the spark bit is used for identifying the corresponding repetition level, and different repetition levels correspond to different repetition times.

the information carried by the spark bit is used for identifying the corresponding repetition level, and different repetition levels correspond to different repetition times; or (b)

The information carried by the spark bit is used for identifying the repeated sending of the target downlink channel by the network side and corresponding repetition levels, and different repetition levels correspond to different repetition times; or (b)

And the information carried by the spark bit is used for identifying that the network side does not repeatedly send the target downlink channel.

Optionally, the determining the repetition number of the sending target downlink channel includes:

Optionally, the determining the repetition number of the target downlink channel sent by the network side based on the protocol predefined mode includes:

Determining the repetition times of the network side for transmitting a target downlink channel based on the terminal type of the terminal; or (b)

Optionally, the indication information is pattern information.

In a third aspect, an embodiment of the present application provides a transmission apparatus for a downlink channel, including:

the first determining module is used for determining the repetition times of the network side for transmitting the target downlink channel;

and the first processing module is used for merging and receiving the target downlink channels sent by the network side based on the repetition times.

In a fourth aspect, an embodiment of the present application provides another downlink channel transmission apparatus, including:

the second determining module is used for determining the repetition times of the downlink channel of the transmission target;

And the second processing module is used for repeatedly sending the target downlink channel to the terminal based on the repetition times.

In a fifth aspect, an embodiment of the present application provides an apparatus, including a memory, a transceiver, and a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

Optionally, the preset information includes any one of the following:

Optionally, the indication information is pattern information.

In a sixth aspect, embodiments of the present application provide another apparatus, including a memory, a transceiver, and a processor:

Optionally, the operations further comprise:

Optionally, the preset information includes any one of the following:

Optionally, the indication information is pattern information.

In a seventh aspect, an embodiment of the present application further provides a processor-readable storage medium storing a computer program for causing the processor to perform the steps of the transmission method of a downlink channel as described in the first aspect or the steps of the transmission method of a downlink channel as described in the second aspect.

The method, the device and the storage medium for transmitting the downlink channel provided by the embodiment of the application can ensure the system performance without influencing the traditional terminal while improving the reliability of the downlink data channel of the RedCAP terminal such as a public downlink control channel and/or a broadcast by repeatedly transmitting the target downlink channel and combining and receiving the RedCAP terminal, and have better backward compatibility.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a flow chart of a transmission method of a downlink channel according to an embodiment of the present application;

fig. 2 is a flow chart of a transmission method of a downlink channel according to another embodiment of the present application;

FIG. 3 is a schematic diagram of an apparatus according to an embodiment of the present application;

FIG. 4 is a schematic diagram of an apparatus according to an embodiment of the present application;

Fig. 5 is a schematic structural diagram of a transmission device for a downlink channel according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a transmission device for a downlink channel according to another embodiment of the present application.

Detailed Description

In the embodiment of the application, the term "and/or" describes the association relation of the association objects, which means that three relations can exist, for example, a and/or B can be expressed as follows: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

The term "plurality" in embodiments of the present application means two or more, and other adjectives are similar.

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In a 5G NR (5th Generation,New RAT) system, common downlink control information is transmitted in a common search space (CSS, common Search Space), and all terminals in a group or cell are subject to detection of reception. Taking Type0 CSS as an example, the search space is mainly used to transmit PDCCH (Physical Downlink Control CHannel) of the scheduling SIB1 (System Information Block), where the transmission is located in binding with SSB (Synchronization Signal Block). Specifically, the specific time domain position of the Type0 CSS transmission is indicated by the 8bit information in the MIB1, and it should be noted that the indication is bound to the time-frequency domain resource position of the SSB, for example, if the indication is coreset#0 mapping pattern1, the SSB and coreset#0 are multiplexed on the time domain, and the time-domain listening position of the Type0 CSS is two slots that are continuous, that is, the base station may select to transmit the Type0 CSS on any one of the two slots. If the pattern2 is mapped by coreset#0, the SSB and coreset#0 are resource multiplexed in the fdm+tdm manner, and if the pattern3 is mapped by coreset#0, the SSB and coreset#0 are resource multiplexed in the FDM manner. And in the case of pattern2 and pattern3, type0 CSS would be transmitted only within one determined slot. When the terminal detects and receives the CSS, the time domain position of detection and reception is determined according to the method, and the PDCCH is not subjected to combined reception.

The current downlink control channel detection and reception does not have repeated transmission and combined reception mechanisms, and when the number of receiving antennas at the terminal side is reduced, the receiving performance is significantly reduced, so that the system performance is lost. On the other hand, the common downlink control channel is detected and received by different types of terminals, so that backward compatibility needs to be ensured. Once CSS is enhanced, the current technology cannot guarantee the detection reception performance of the legacy terminal.

The embodiment of the application provides a transmission method and a transmission device of a downlink channel, which are used for determining the repetition times of a public downlink control channel or a broadcast PDSCH by a RedCAP terminal through explicit or implicit indication through repeated transmission of a target downlink channel, and carrying out combined reception, thereby improving the reliability of the downlink channel of the RedCAP terminal and ensuring the system performance.

The method and the device are based on the same application, and because the principles of solving the problems by the method and the device are similar, the implementation of the device and the method can be referred to each other, and the repetition is not repeated.

The technical scheme provided by the embodiment of the application can be suitable for various systems, in particular to a 5G system. For example, suitable systems may be global system for mobile communications (global system of mobile communication, GSM), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) universal packet Radio service (general packet Radio service, GPRS), long term evolution (long term evolution, LTE), LTE frequency division duplex (frequency division duplex, FDD), LTE time division duplex (time division duplex, TDD), long term evolution-advanced (long term evolution advanced, LTE-a), universal mobile system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX), 5G New air interface (New Radio, NR), and the like. Terminal devices and network devices are included in these various systems. Core network parts such as evolved packet system (Evloved Packet System, EPS), 5G system (5 GS) etc. may also be included in the system.

The terminal according to the embodiment of the application can be a device for providing voice and/or data connectivity for a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem, etc. The names of the terminal devices may also be different in different systems, for example in a 5G system, the terminal devices may be referred to as User Equipment (UE). The wireless terminal device may communicate with one or more Core Networks (CNs) via a radio access Network (Radio Access Network, RAN), which may be mobile terminal devices such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, e.g., portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile devices that exchange voice and/or data with the radio access Network. Such as personal communication services (Personal Communication Service, PCS) phones, cordless phones, session initiation protocol (Session Initiated Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal Digital Assistant, PDAs), and the like. The wireless terminal device may also be referred to as a system, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile), remote station (remote station), access point (access point), remote terminal device (remote terminal), access terminal device (access terminal), user terminal device (user terminal), user agent (user agent), user equipment (user device), and embodiments of the present application are not limited in this respect.

The network device according to the embodiment of the present application may be a base station, where the base station may include a plurality of cells for providing services for the terminal. A base station may also be called an access point or may be a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or other names, depending on the particular application. The network device may be operable to exchange received air frames with internet protocol (Internet Protocol, IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiment of the present application may be a network device (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile communications, GSM) or code division multiple access (Code Division Multiple Access, CDMA), a network device (NodeB) in a wideband code division multiple access (Wide-band Code Division Multiple Access, WCDMA), an evolved network device (evolutional Node B, eNB or e-NodeB) in a long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in a 5G network architecture (next generation system), a home evolved base station (Home evolved Node B, heNB), a relay node (relay node), a home base station (femto), a pico base station (pico), etc., which are not limited in the embodiment of the present application. In some network structures, the network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

Fig. 1 is a flow chart of a transmission method of a downlink channel according to an embodiment of the present application, as shown in fig. 1, where the method includes:

step 100, determining the repetition times of the network side for transmitting the target downlink channel;

the RedCap terminal may determine the repetition number of the target downlink channel sent by the base station based on the network side, for example, by the base station through an explicit indication or an implicit indication, where the target downlink channel in the embodiments of the present application may be a common downlink control channel or a broadcast downlink data channel broadcast PDSCH, or other downlink channels, and embodiments of the present application are not limited.

And step 101, combining and receiving the target downlink channels sent by the network side based on the repetition times.

After determining the repetition number of the target downlink channel sent by the network side, the RedCap terminal can combine and receive the target downlink channel repeatedly sent based on the repetition number, so that the reliability of the common downlink control channel and/or the broadcast downlink data channel of the RedCap terminal can be improved without affecting other common terminals.

Optionally, in the foregoing method embodiment, the determining, by the RedCap terminal, that the repetition number of the network side to send the target downlink channel receives the indication information sent by the network side may include at least two ways of:

One way is to receive indication information sent by a network side and determine the repetition number of the target downlink channel sent by the network side based on the indication information.

Another way is to determine the repetition number of the network side sending the target downlink channel based on the predefined protocol.

The first way is described first, specifically as follows:

receiving indication information sent by a network side, and determining the repetition number of a target downlink channel sent by the network side based on the indication information, wherein the method can comprise at least three situations:

case one: and receiving a system message sent by a network side, wherein a main information block (MasterInformationBlock, MIB) included in the system message carries the indication information, and determining the repetition number of the target downlink channel sent by the network side based on the indication information.

Specifically, the indication information in the MIB is carried by a spark bit of 1bit, and accordingly, based on the indication information, determining the repetition number of the network side for sending the target downlink channel may include:

based on the first information carried by the spark bit (for example, when the bit is 0, it indicates that the target downlink channel cannot be repeatedly transmitted), it can be determined that the network side does not repeatedly send the target downlink channel, that is, the repetition number is 0;

Based on the second information carried by the spark bit (for example, when the bit is 1, the repeated transmission of the target downlink channel is indicated according to the predefined repetition number), it may be determined that the repetition number of the target downlink channel sent by the network side is the predefined number or the number determined according to the preset information.

Or if bit is 0, it indicates that the transmission is repeated, and if bit is 1, it indicates that the transmission is not repeated.

Wherein the predefined number of times may be a fixed value, e.g. a predefined number of repeated transmissions N.

Wherein, the preset information may include any one of the following:

a subcarrier spacing (subcarrier spacing, SCS) of the synchronization signal and physical broadcast channel PBCH block and/or a frequency band available to the system;

In addition, specifically, the indication information in the MIB is carried by a spark bit of 1bit, and accordingly, based on the indication information, determining the repetition number of the network side for sending the target downlink channel may further include:

For example, when the bit is 0, it indicates that the target downlink channel is transmitted according to the repetition level a, and when the bit is 1, it indicates that the target downlink channel is transmitted according to the repetition level B, where each repetition level may correspond to a number of repeated transmissions, and the higher the repetition level, the more the number of repeated transmissions may be.

And a second case: and receiving a Physical Broadcast Channel (PBCH) sent by a network side, wherein the PBCH carries the indication information, and determining the repetition number of a target downlink channel sent by the network side based on the indication information, wherein the indication information is an information bit added in a coding process except a MIB.

Specifically, the indication information in the PBCH is carried by a spare bit of 2 bits, and accordingly, based on the indication information, the repetition number of the target downlink channel sent by the network side is determined, and the method may further include any one of the following:

determining corresponding repetition levels based on the information carried by the spark bit, wherein different repetition levels correspond to different repetition times; and determining the repetition times of the network side for transmitting the target downlink channel based on the repetition level.

Specifically, the 2bit information may be used to indicate four repetition transmission levels. Different repetition levels correspond to different repetition times, and the higher the repetition level is, the more times the transmission can be repeated. The RedCap terminal may determine the number of repetitions of the base station transmitting the target downlink channel based on each repetition level. It can be understood that the 2bit information default network side is to repeatedly send the target downlink channel.

Or alternatively, the process may be performed,

determining that the network side repeatedly transmits the target downlink channel and corresponding repetition levels based on the information borne by the spark bit, wherein different repetition levels correspond to different repetition times; and determining the repetition times of the network side for transmitting the target downlink channel based on the repetition level.

Specifically, the 2bit information is not intended to be repeatedly sent by the default network side, but is further indicated by the information carried by the network side. For example, when the 2bit information is "00", it means that the network side will not repeatedly send the target downlink channel; for "01", "10" and "11", it may be assumed that the network side is to repeatedly transmit the target downlink channel, and each of them corresponds to a repetition level. It will be appreciated that three repetition levels may be indicated herein.

If the network side is determined not to repeatedly send the target downlink channel based on the information borne by the spark bit, the repetition number is 0. As described above, if the information carried by the spark bit is "00", it indicates that the network side will not repeatedly send the target downlink channel, and the repetition number is 0.

Case three: and receiving a target message, wherein the target message carries a Physical Cell Identifier (PCID), and determining the repetition number of the target downlink channel sent by the network side through a protocol predefined mode based on the PCID.

Specifically, the target message may be a primary synchronization signal (Primary Synchronization Signals, PSS) and a secondary synchronization signal (Secondary Synchronization Signals, SSS), and the RedCap terminal may determine, based on a predefined number of protocols, a repetition number corresponding to the target downlink channel under the target PCID sent by the network side.

The base station implicitly determines the repeated transmission times of the target channel through the ID carried by the PSS/SSS, for example, the target channel under certain PCIDs can be determined to carry out repeated transmission for N times in a protocol predefined mode, and the RedCAP terminal carries out combined reception on the target downlink channel under the cell with the PCIDs.

First, the second mode is described as follows:

the RedCap terminal can determine the repetition number of the target downlink channel sent by the network side according to any one of the following modes predefined by the protocol:

for example, the RedCap terminal may determine the number of repetitions of the network side for transmitting the target downlink channel based on its own terminal type, specifically, the terminal of category X may combine and receive N1 target channels, the terminal of category Y may combine and receive N2 target channels, and so on.

Alternatively, the RedCap terminal may determine the repetition number of the network-side transmission target downlink channel based on the predefined number of protocols, for example, a preset fixed number.

Or, the RedCap terminal determines the repetition number according to preset information, wherein the preset information comprises any one of the following information:

In the above embodiments, the indication information may indicate the number of repetitions using the pattern information.

The transmission method of the downlink channel provided by the application can ensure the system performance without influencing the traditional terminal while improving the reliability of the downlink data channel of the RedCAP terminal such as a public downlink control channel and/or a broadcast by repeatedly transmitting the target downlink channel and combining and receiving the RedCAP terminal, thereby having better backward compatibility.

Fig. 2 is a flow chart of a transmission method of a downlink channel according to another embodiment of the present application, as shown in fig. 2, where the method includes:

step 200, determining the repetition times of the downlink channel of the transmission target;

after determining that the target downlink channel needs to be repeatedly sent, the network measurement device, for example, the base station, may first determine the number of repetitions of the target downlink channel. The target downlink channel in the embodiment of the present application may be a common downlink control channel or a broadcast downlink data channel.

Step 201, repeatedly sending the target downlink channel to the terminal based on the repetition times.

After determining the repetition number of the target downlink channel, the base station may repeatedly send the target downlink channel to the RedCap terminal based on the repetition number.

Optionally, in the foregoing embodiment, the base station may further send indication information to the RedCap terminal, so that the RedCap terminal determines, based on the indication information, the number of repetitions of the base station sending the target downlink channel. That is, the base station may notify the RedCap terminal of the pass indication information in advance before repeatedly transmitting the target downlink channel, so that the RedCap terminal can correctly combine and receive.

Optionally, in the foregoing embodiment, sending indication information to the terminal, so that the terminal determines, based on the indication information, the repetition number of the network side sending the target downlink channel, where the method includes:

Wherein, optionally, the indication information carried in the MIB is carried by a spark bit of 1 bit;

The preset information comprises any one of the following:

Alternatively, the indication information carried in the MIB is carried by a 1-bit spark bit; and the information carried by the spark bit is used for identifying the corresponding repetition level, and different repetition levels correspond to different repetition times.

Still alternatively, the indication information carried in the PBCH is carried by a 2bit spark bit;

Still further alternatively, the determining, based on the PCID, the repetition number of the network side to send the target downlink channel in a predefined manner by a protocol includes:

The above is the same as the first way in the embodiment of fig. 1, and the detailed information can be referred to the description of the above embodiment, which is not repeated here.

Optionally, the determining, by the base station, the number of repetitions of the transmission target downlink channel may include: based on a predefined protocol mode, determining the repetition number of the target downlink channel sent by the network side, and specifically:

This part is the same as the second way in the embodiment of fig. 1, and the detailed information can be referred to the description of the above embodiment, which is not repeated here.

The method of the present application is further described below in connection with a few specific examples.

Example 1:

it is assumed that there are a RedCap terminal and a normal terminal in the system. Both terminals need to receive the same common downlink control channel in order to complete the access of the cell or the scheduling at the cell level. Considering that the number of receiving antennas of the RedCap terminal is greatly reduced compared with that of the normal terminal, the antenna size is limited, and the acceptance performance of the RedCap terminal for the common downlink control channel is limited. Meanwhile, it is required to ensure that the detection and reception of the common downlink control channel by the normal terminal are not affected.

When the base station transmits the common downlink control channel, the base station performs repeated transmission according to a certain repetition number or transmission pattern, wherein the repetition number or the transmission pattern is only visible to the RedCap terminal. And, the repetition number or transmission pattern is indicated by explicit signaling. In this example, the network side indicates the number of repeated combinations or pattern information when the RedCap terminal receives the common downlink control channel through the related information in the MIB. Specifically, the indication information in the MIB is carried by a spark bit of 1bit, and when the bit is 0, it indicates that the common downlink control channel will not be transmitted repeatedly; when the bit is 1, the common downlink control channel is repeatedly transmitted according to the predefined repetition times; or 0 indicates repeated transmission and 1 indicates non-repeated transmission.

Wherein the predefined number of repetitions or transmission pattern may be determined by:

mode 1: the protocol is predefined. For example, the number of transmission times of a common downlink control channel of the RedCap terminal or the pattern information of the transmission is specified by a protocol, for example, repeated transmission is performed N times, where N is a positive integer greater than or equal to 1. And when detecting and receiving the common downlink control information, the RedCAP terminal performs combined reception on the common downlink control channel according to the predefined repeated reception times or transmission patterns. Specifically, if the remote bit is analyzed to be the state A after the remote bit receives the MIB, the common downlink control channel is combined and received according to a predefined protocol mode; and if the remote terminal analyzes that the spark bit is in the state B after receiving the MIB, the remote terminal does not combine and receive the common downlink control channel.

Mode 2: and determining the corresponding repetition times or transmission patterns according to the SCS of the synchronous signal and the PBCH block SSB and/or the SCS of the band and/or the type 0-PDCCH. For example, if the combination of SSB and band is { SSB 15khz, band nx }, the corresponding number of repeated transmissions is N1 or the corresponding transmission pattern is P1; the combination of SSB and band is { SSB 15kHz, band nY }, the corresponding number of repeated transmissions is N2 or the corresponding transmission pattern is P2; the combination of SSB and band is { SSB 30kHz, band nZ }, the corresponding number of repeated transmissions is N3 or the corresponding transmission pattern is P3; the application does not exclude any other combinations such as higher SCS and other bands.

For another example, if the combination of SSB and Type0-PDCCH is { SSB 15kHz, type0-PDCCH 15kHz }, the corresponding number of repeated transmissions is N1 or the corresponding transmission pattern is P1; the combination of SSB and Type0-PDCCH is { SSB 15kHz, type0-PDCCH 30kHz }, the corresponding repeated transmission times are N2 or the corresponding transmission pattern is P2; the combination of SSB and Type0-PDCCH is { SSB 30kHz, type0-PDCCH 15kHz }, the corresponding repeated transmission times are N3 or the corresponding transmission pattern is P3; the combination of SSB and Type0-PDCCH is { SSB 30kHz, type0-PDCCH 30kHz }, the corresponding repeated transmission times are N4 or the corresponding transmission pattern is P4; the application does not exclude any other combinations, such as combinations between higher SCS and any other SCS.

Example 2:

as in example 1 above, the base station informs the RedCap terminal of detecting the number of repeated transmissions of the received common downlink control channel or the transmission pattern through the 1bit space bit carried in the MIB. For example, state a represents repetition level 1 or transmission pattern 1, and state 2 represents repetition level 2 or transmission pattern 2.

The specific repetition level or transmission pattern is defined using the method in example 1, i.e. the protocol is predefined or the corresponding number of repetitions or transmission pattern is determined from the SCS of SSB and/or the SCS of band and/or type 0-PDCCH. For example, the specific { SSB, type0-PDCCH } combination corresponds to a specific repetition level combination or transmission pattern combination, and this example will not be described in detail.

Example 3:

When the base station transmits the common downlink control channel, the base station performs repeated transmission according to a certain repetition number or transmission pattern, wherein the repetition number or the transmission pattern is only visible to the RedCap terminal. And, the repetition number or transmission pattern is indicated by explicit signaling. In this embodiment, the network side indicates, through the related information carried in the PBCH, the repetition combining number or pattern information when the RedCap terminal receives the common downlink control channel.

Determining the number of repeated transmission times of a public downlink control channel according to 2bit spare bits carried in a PBCH, wherein the 2bit information can be used for indicating four repeated transmission grades; alternatively, the 2bit information may be used to indicate whether to start retransmission and three repetition levels

After detecting that the SSB is received, the RedCap terminal determines the repeated transmission times or transmission patterns of the common downlink control channel according to the 2bit space bits carried on the PBCH, and performs combined reception on the common downlink control channel according to the information. The specific status information can be determined by the following table:

bit state	Mode 1	Mode 2
			00	Non-repeated transmission	Repeat level A or pattern A
01	Repeat level A or pattern A	Repeat level B or pattern B
			10	Repeat level B or pattern B	Repeat ratingC or pattern C
11	Repeat level C or pattern C	Repeat level D or pattern D

The method for determining the repetition level or pattern in the example is as described in examples 1 and 2, and the notifiable repetition level combination or pattern combination is determined by means of protocol predefining or SSB in combination with the band/Type0-PDCCH, which is not described in detail in this example.

Example 4:

When the base station transmits the common downlink control channel, the base station performs repeated transmission according to a certain repetition number or transmission pattern, wherein the repetition number or the transmission pattern is only visible to the RedCap terminal. And, the repetition number or transmission pattern is indicated by explicit signaling. In this embodiment, the terminal determines the repetition number or transmission pattern of the common downlink control channel according to a predefined manner of the protocol. Specifically:

the method comprises the steps that the RedCAP terminal determines the number of common downlink control channels which can be combined according to the type of the terminal: for example, a terminal of category X may receive N1 common downlink control channels in a combined manner, and a terminal of category Y may receive N2 common downlink control channels in a combined manner. The network side needs to send the common downlink control channel according to the maximum repetition number or pattern.

Or the terminal determines the corresponding combined receiving times according to SCS of SSB and/or SCS of band and/or Type 0-PDCCH. The specific method is similar to examples 1-3 and will not be described again here.

Or, the fixed combining receiving times are determined through a predefined mode of the protocol, namely, the protocol prescribes that the RedCAP terminal needs to combine the public downlink control channels for N times.

Example 5:

When the base station transmits the common downlink control channel, the base station performs repeated transmission according to a certain repetition number or transmission pattern, wherein the repetition number or the transmission pattern is only visible to the RedCap terminal. And, the repetition number or transmission pattern is indicated by explicit signaling. In this embodiment, the network side indicates, through the related information in the MIB, the repetition combining number or pattern information when the RedCap terminal receives the common downlink control channel. Specifically:

implicitly determining the repeated transmission times of the common downlink control channel through the ID carried by the PSS/SSS:

determining common downlink control channels under certain PCIDs through a protocol predefined mode to carry out repeated transmission for N times; or alternatively, the process may be performed,

And the RedCAP terminal performs combined reception on the common downlink control channel under the cell with the PCID.

Specifically, there is a one-to-one correspondence between the ID carried by the PSS/SSS and the number of transmissions or transmission pattern of the common downlink control channel of the RedCap terminal. For example, the transmission patterns of the public downlink control channel of the RedCap terminal include two types, namely a and B, and the even PCID corresponds to the transmission pattern a and the odd PCID corresponds to the transmission pattern B. As another example, PCIDs 0-503 correspond to transmission pattern A, while PCIDs 504-1008 correspond to transmission pattern B.

Further, the present application does not limit any other possible correspondence between PCIDs and transmission patterns of the common downlink control channel, and the transmission patterns corresponding to the RedCap terminal are not limited to two.

Regarding the method for defining the common downlink control channel transmission pattern, a method similar to that of examples 1-4 may be adopted, and this example will not be repeated.

The method can be combined with network deployment, for example, in the scene of independent deployment such as intelligent factories, monitoring and the like or static RedCAP terminals, and the method can be adopted for flexible deployment.

As described in examples 1-5, the target channel may also be a downlink data channel carrying broadcast of SIB1 information, and the specific flow and method are the same as those described above, and are not repeated in this embodiment.

Fig. 3 is a schematic diagram of an apparatus according to an embodiment of the present application, and as shown in fig. 3, the apparatus includes a memory 301, a transceiver 302, and a processor 303: wherein the memory 301 is used for storing a computer program; the transceiver 302 is used for receiving and transmitting data under the control of the processor; the processor 303 is configured to read the computer program in the memory and perform the corresponding following operations:

Optionally, the preset information includes any one of the following:

Optionally, the indication information is pattern information.

Wherein the transceiver 302 is configured to receive and transmit data under the control of the processor 303.

Wherein in fig. 3, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 303 and various circuits of memory represented by memory 301, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 302 may be a number of elements, i.e., including a transmitter and a receiver, providing a means for communicating with various other apparatus over transmission media, including transmission media such as wireless channels, wired channels, optical cables, and the like. The user interface 304 may also be an interface capable of interfacing with an inscribed desired device for a different user device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 303 is responsible for managing the bus architecture and general processing, and the memory 301 may store data used by the processor 303 in performing operations.

Alternatively, the processor 303 may be a CPU (central processing unit), ASIC (Application Specific Integrated Circuit ), FPGA (Field-Programmable Gate Array, field programmable gate array) or CPLD (Complex Programmable Logic Device ), and the processor may also employ a multi-core architecture.

The processor is operable to perform any of the methods provided by embodiments of the present application in accordance with the obtained executable instructions by invoking a computer program stored in a memory. The processor and the memory may also be physically separate.

Fig. 4 is a schematic diagram of an apparatus according to an embodiment of the present application, and as shown in fig. 4, the apparatus includes a memory 401, a transceiver 402, and a processor 403: wherein the memory 401 is used for storing a computer program; the transceiver 402 is configured to transmit and receive data under the control of the processor; the processor 403 is configured to read the computer program in the memory and perform the following operations:

Optionally, the operations further comprise:

Optionally, the preset information includes any one of the following:

Optionally, the indication information is pattern information.

Wherein the transceiver 402 is configured to receive and transmit data under the control of the processor 403.

Wherein in fig. 4, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 403 and various circuits of memory, represented by memory 401, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 402 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over transmission media, including wireless channels, wired channels, optical cables, and the like. The processor 403 is responsible for managing the bus architecture and general processing, and the memory 401 may store data used by the processor 403 in performing operations.

The processor 403 may be a Central Processing Unit (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a Field programmable gate array (Field-Programmable Gate Array, FPGA), or a complex programmable logic device (Complex Programmable Logic Device, CPLD), or the processor may employ a multi-core architecture.

It should be noted that, the above device provided in the embodiment of the present application can implement all the method steps implemented in the method embodiment and achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those in the method embodiment in this embodiment are omitted.

Fig. 5 is a schematic structural diagram of a transmission device for a downlink channel according to an embodiment of the present application, where, as shown in fig. 5, the transmission device for a downlink channel includes: a first determining module 501 and a first processing module 502, where the first determining module 501 is configured to determine a repetition number of a target downlink channel sent by a network side; the first processing module 502 is configured to combine and receive the target downlink channel sent by the network side based on the repetition number.

Wherein, the first determining module 501 may include:

a first unit, configured to receive indication information sent by a network side, and determine a repetition number of a target downlink channel sent by the network side based on the indication information; or (b)

And the second unit is used for determining the repetition times of the network side for transmitting the target downlink channel based on a protocol predefined mode.

Alternatively, the first unit may be specifically configured to:

Optionally, the preset information includes any one of the following:

Alternatively, the second unit may be specifically configured to:

Optionally, the indication information is pattern information.

Fig. 6 is a schematic structural diagram of a transmission device for a downlink channel according to another embodiment of the present application, as shown in fig. 6, where the transmission device for a downlink channel includes: a second determining module 601 and a second processing module 602, where the second determining module 601 is configured to determine a repetition number of the transmission target downlink channel; the second processing module 602 repeatedly sends the target downlink channel to the terminal based on the repetition number.

The downlink channel transmission device further includes an indication module 603, configured to send indication information to the terminal, so that the terminal determines, based on the indication information, the repetition number of sending the target downlink channel by the network side.

Optionally, the indication module 603 is specifically configured to:

Optionally, the preset information includes any one of the following:

Optionally, the second determining module 601 may specifically be configured to: and determining the repetition times of the network side for transmitting the target downlink channel based on a protocol predefined mode.

Optionally, the indication information is pattern information

The device provided by the embodiments of the application can ensure the system performance without influencing the traditional terminal while improving the reliability of the downlink data channel of the remote control channel and/or broadcast by the remote control channel through repeated transmission of the target downlink channel and combined reception of the remote control channel, and has better backward compatibility.

It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice. In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

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

In another aspect, embodiments of the present application further provide a processor-readable storage medium storing a computer program for causing the processor to perform the method provided in the foregoing embodiments, for example, including:

determining the repetition times of the network side for transmitting the target downlink channel; and combining and receiving the target downlink channel sent by the network side based on the repetition times.

Or alternatively, the process may be performed,

determining the repetition times of a downlink channel of a transmission target; and repeatedly transmitting the target downlink channel to the terminal based on the repetition times.

It should be noted that, in the process of being specifically executed, the computer program stored on the processor readable storage medium according to the embodiment of the present application can implement all the method steps implemented by the method embodiments and achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the method embodiments in the present embodiment are omitted.

The processor-readable storage medium may be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic storage (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), semiconductor storage (e.g., ROM, EPROM, EEPROM, nonvolatile storage (NAND FLASH), solid State Disk (SSD)), and the like.

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

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

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

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

It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A method for transmitting a downlink channel, comprising:

combining and receiving a target downlink channel sent by the network side based on the repetition times;

the determining the repetition number of the target downlink channel sent by the network side includes:

receiving indication information sent by a network side, and determining the repetition number of a target downlink channel sent by the network side based on the indication information;

the method for receiving the indication information sent by the network side and determining the repetition number of the target downlink channel sent by the network side based on the indication information comprises the following steps:

receiving a system message sent by a network side, wherein a master information block MIB included in the system message carries the indication information, and determining the repetition number of a target downlink channel sent by the network side based on the indication information;

the indication information carried in the MIB is carried by a 1bit spark bit;

Determining the repetition number of the target downlink channel sent by the network side as the number determined according to preset information based on the second information borne by the spark bit;

the preset information comprises any one of the following:

2. The transmission method of a downlink channel according to claim 1, wherein the target downlink channel comprises a common downlink control channel or a broadcast downlink data channel.

3. The transmission method of a downlink channel according to claim 1 or 2, wherein the indication information is pattern information.

4. A method for transmitting a downlink channel, comprising:

repeatedly sending a target downlink channel to the terminal based on the repetition times;

the method further comprises the steps of:

transmitting indication information to the terminal so that the terminal determines the repetition number of the target downlink channel transmitted by the network side based on the indication information;

the sending, by the terminal, indication information to the terminal, so that the terminal determines, based on the indication information, the repetition number of sending, by the network side, the target downlink channel, including:

Transmitting a system message to the terminal, wherein a master information block MIB included in the system message carries the indication information so that the terminal can determine the repetition number of the target downlink channel transmitted by the network side based on the indication information;

the indication information carried in the MIB is carried by a 1bit spark bit;

the second information carried by the spark bit is used for identifying that the repetition number of the target downlink channel sent by the network side is a predefined number or a number determined according to preset information;

the preset information comprises any one of the following:

5. The method of transmitting downlink channels according to claim 4, wherein the target downlink channel comprises a common downlink control channel or a broadcast downlink data channel.

6. The transmission method of the downlink channel according to claim 4 or 5, wherein the indication information is pattern information.

7. A downlink channel transmission apparatus, comprising:

the first processing module is used for merging and receiving the target downlink channels sent by the network side based on the repetition times;

wherein the first determining module comprises:

a first unit, configured to receive indication information sent by a network side, and determine a repetition number of a target downlink channel sent by the network side based on the indication information;

wherein the first unit may specifically be configured to:

receiving a system message sent by a network side, wherein a master information block MIB included in the system message carries the indication information, and determining the repetition number of a target downlink channel sent by the network side based on the indication information; the indication information carried in the MIB is carried by a 1bit spark bit;

The preset information comprises any one of the following:

8. A downlink channel transmission apparatus, comprising:

the second processing module is used for repeatedly sending the target downlink channel to the terminal based on the repetition times;

the transmission device of the downlink channel further comprises an indication module, which is used for sending indication information to the terminal so that the terminal can determine the repetition number of the target downlink channel sent by the network side based on the indication information;

the indication module is specifically configured to:

the indication information carried in the MIB is carried by a 1bit spark bit;

The second information carried by the spark bit is used for identifying that the repetition number of the target downlink channel sent by the network side is the number determined according to preset information;

the preset information comprises any one of the following:

9. An apparatus comprising a memory, a transceiver, and a processor:

the indication information carried in the MIB is carried by a 1bit spark bit;

the preset information comprises any one of the following:

10. The apparatus of claim 9, wherein the target downlink channel comprises a common downlink control channel or a broadcast downlink data channel.

11. The apparatus according to claim 9 or 10, wherein the indication information is pattern information.

12. An apparatus comprising a memory, a transceiver, and a processor:

the operations further comprise:

The indication information carried in the MIB is carried by a 1bit spark bit;

the preset information comprises any one of the following:

13. The apparatus of claim 12, wherein the target downlink channel comprises a common downlink control channel or a broadcast downlink data channel.

14. The apparatus according to claim 12 or 13, wherein the indication information is pattern information.

15. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing the processor to execute the transmission method of the downlink channel according to any one of claims 1 to 3 or for causing the processor to execute the transmission method of the downlink channel according to any one of claims 4 to 6.