CN117979457A

CN117979457A - Message transmission method and communication device

Info

Publication number: CN117979457A
Application number: CN202211298042.9A
Authority: CN
Inventors: 张萌
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2024-05-03
Also published as: WO2024083170A1

Abstract

The application discloses a message transmission method and a communication device, wherein the message transmission method comprises the following steps: receiving a message 4, wherein a demodulation reference signal (DMRS) of a Physical Downlink Shared Channel (PDSCH) carrying the message 4 has a quasi-co-location (QCL) relationship with a first SSB in at least two Synchronous Signal Blocks (SSB), wherein the at least two SSBs are SSBs corresponding to repeated transmission of the message 1, or the DMRS of the PDSCH carrying the message 4 has the same QCL relationship with a reference signal of the PDSCH carrying the message 2, or the DMRS of the PDSCH carrying the message 4 has the same QCL relationship with a reference signal of a Physical Uplink Shared Channel (PUSCH) carrying the message 3. By adopting the method and the device, the signal with the QCL relation with the DMRS carrying the PDSCH of the message 4 can be determined under the scene of repeatedly transmitting the message 1 for a plurality of times.

Description

Message transmission method and communication device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a message transmission method and a communication device.

Background

The terminal device accesses the network device through a random access procedure in which the terminal device transmits a message 1 (Msg 1) to the network device, the network device responds to the message 1 and transmits a message 2 (Msg 2) to the terminal device, the terminal device further transmits a message 3 (Msg 3) to the network device, and the network device responds to the message 3 and transmits a message 4 to the terminal device. Currently, the Demodulation reference signal (Demodulation REFERENCE SIGNAL, DMRS) of the physical downlink shared channel (Physical Downlink SHARED CHANNEL, PDSCH) carrying the message 4 in the random access procedure has a Quasi Co-Location (QCL) relationship with the Synchronization signal block (Synchronization SIGNAL AND PBCH block, SSB) associated with the message 1. For coverage enhancement, it is possible to repeatedly transmit the message 1 multiple times in the future, and the multiple repeated transmissions may be transmitted by using different beams, and how to determine the QCL relationship of the DMRS of the PDSCH carrying the message 4 in the scenario of repeating the multiple transmissions of the message 1 is a problem to be solved.

Disclosure of Invention

The embodiment of the application provides a message transmission method and a communication device, which can determine a signal with a QCL relation with the DMRS of a PDSCH carrying a message 4 under the scene of repeatedly transmitting the message 1 for a plurality of times, thereby being convenient for terminal equipment to receive the message 4.

In a first aspect, an embodiment of the present application provides a message transmission method, where the method includes:

Receiving a message 4, wherein a demodulation reference signal (DMRS) of a Physical Downlink Shared Channel (PDSCH) carrying the message 4 has a quasi-co-location (QCL) relationship with a first SSB in at least two Synchronous Signal Blocks (SSB), wherein the at least two SSBs are SSBs corresponding to repeated transmission of the message 1, or the DMRS of the PDSCH carrying the message 4 has the same QCL relationship with a reference signal of the PDSCH carrying the message 2, or the DMRS of the PDSCH carrying the message 4 has the same QCL relationship with a reference signal of a Physical Uplink Shared Channel (PUSCH) carrying the message 3.

Based on the description of the first aspect, the DMRS of the PDSCH carrying the message 4 may have a QCL relationship with a first SSB of the at least two SSBs corresponding to the repeated transmission of the message 1, may have the same QCL relationship with a reference signal carrying the PDSCH of the message 2, or may have the same QCL relationship with a reference signal carrying the PUSCH of the message 3. The application can determine the signal with QCL relation with the DMRS of PDSCH carrying the message 4 under the scene of repeatedly transmitting the message 1 for a plurality of times, thereby being convenient for the terminal equipment to receive the message 4.

In one possible implementation manner, the first SSB is an SSB corresponding to a first transmission in the repeated multiple transmissions; or alternatively; the first SSB is the SSB corresponding to the second transmission in the repeated transmission; the first transmission is the transmission with the earliest transmission time in the repeated multiple transmissions, and the second transmission is the transmission with the latest transmission time in the repeated multiple transmissions.

In this embodiment, in the case of repeating transmission of message 1, the SSB corresponding to the earliest transmitted message 1 may be the SSB corresponding to the latest transmitted message 1, and the signal having the QCL relationship with the DMRS of the PDSCH carrying message 4 may be clarified by this embodiment.

In one possible implementation manner, the first SSB is an SSB corresponding to an RO resource with a highest resource index number in at least two random access opportunity RO resources associated with the at least two SSBs; or alternatively

The first SSB is an SSB corresponding to an RO resource with the lowest resource index number in at least two RO resources associated with the at least two SSBs; or alternatively

The first SSB is the SSB corresponding to the RO resource with the highest frequency position in at least two RO resources associated with the at least two SSBs; or alternatively

The first SSB is the SSB corresponding to the RO resource with the lowest frequency position in at least two RO resources associated with the at least two SSBs;

Wherein one SSB associates one or more RO resources.

In this way, the SSB signal having the QCL relationship for the DMRS of the PDSCH carrying the message 4 is accurately determined by the comparison result of the resource index numbers of the at least two RO resources associated with the at least two SSBs.

In one possible implementation, the first SSB is the SSB with the lowest SSB index number of the at least two SSBs; or alternatively

The first SSB is the SSB with the highest SSB index number in the at least two SSBs.

In this way, the SSB signals having the QCL relationship in the DMRS of the PDSCH carrying the message 4 are accurately determined by the comparison result of the SSB index numbers of at least two SSBs.

In one possible implementation, the having a QCL relationship includes a channel large scale characteristic parameter correlation, the channel large scale characteristic parameter including at least one of: doppler spread, doppler shift, average delay, delay spread, spatial receive filter parameters, and spatial transmit filter parameters.

In this way, the channel large-scale characteristic parameter of the message 4 is determined by the correlation between the channel large-scale characteristic parameters of the two signals having the QCL relationship, thereby improving the reception efficiency.

In a second aspect, an embodiment of the present application provides a message transmission method, where the method includes:

And sending a message 4, wherein a demodulation reference signal (DMRS) of a Physical Downlink Shared Channel (PDSCH) carrying the message 4 has a quasi-co-location (QCL) relationship with a first SSB in at least two Synchronous Signal Blocks (SSBs), wherein the at least two SSBs are SSBs corresponding to repeated transmission of the message 1, or the DMRS of the PDSCH carrying the message 4 has the same QCL relationship with a reference signal of the PDSCH carrying the message 2, or the DMRS of the PDSCH carrying the message 4 has the same QCL relationship with a reference signal of a Physical Uplink Shared Channel (PUSCH) carrying the message 3.

Wherein one SSB associates one or more RO resources.

In a third aspect, embodiments of the present application provide a communication device comprising means for implementing the method in any of the possible implementations of the first aspect described above, or comprising means for implementing the method in any of the possible implementations of the second aspect described above.

In a fourth aspect, embodiments of the present application provide a communications apparatus comprising a processor and a memory interconnected, the memory storing a computer program comprising program instructions, the processor being configured to invoke the program instructions to perform a method according to the first aspect or any alternative implementation of the first aspect or to perform a method according to the second aspect or any alternative implementation of the second aspect.

In a fifth aspect, embodiments of the present application provide a chip comprising a processor coupled to an interface, the processor and the interface; the interface is for receiving or outputting signals and the processor is for executing code instructions to perform a method as described in the first aspect or any optional implementation of the first aspect or to perform a method as described in the second aspect or any optional implementation of the second aspect.

In a sixth aspect, an embodiment of the present application provides a module apparatus, including a communication module, a power module, a storage module, and a chip module, wherein: the power supply module is used for providing electric energy for the module equipment; the storage module is used for storing data and/or instructions; the communication module is communicated with external equipment; the chip module is used for calling data and/or instructions stored in the storage module, and executing the method according to the first aspect or any optional implementation manner of the first aspect or executing the method according to the second aspect or any optional implementation manner of the second aspect in combination with the communication module.

In a seventh aspect, embodiments of the present application provide a computer readable storage medium storing a computer program comprising program instructions for implementing a method according to the first aspect or any optional implementation of the first aspect, or for implementing a method according to the second aspect or any optional implementation of the second aspect, when the program instructions are executed by an electronic device.

Drawings

Fig. 1a is a schematic structural diagram of a communication system according to an embodiment of the present application;

fig. 1b is a schematic diagram of a random access procedure according to an embodiment of the present application;

fig. 1c is a schematic diagram of an association relationship between SSB and RO resources provided by an embodiment of the present application;

fig. 2 is a flow chart of a message transmission method according to an embodiment of the present application;

Fig. 3 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of still another communication device according to an embodiment of the present application;

Fig. 6 is a schematic structural diagram of a module device according to an embodiment of the present application.

Detailed Description

In the embodiment of the present application, unless otherwise specified, the character "/" indicates that the associated object is one or the relationship. For example, A/B may represent A or B. "and/or" describes an association relationship of an association object, meaning that three relationships may exist. For example, a and/or B may represent: a exists alone, A and B exist together, and B exists alone.

It should be noted that the terms "first," "second," and the like in the embodiments of the present application are used for distinguishing between description and not necessarily for indicating or implying a relative importance or number of features or characteristics in order.

In the embodiments of the present application, "at least one" means one or more, and "a plurality" means two or more. Furthermore, "at least one item(s)" below, or the like, refers to any combination of these items, and may include any combination of single item(s) or plural items(s). For example, at least one (one) of A, B or C may represent: a, B, C, a and B, a and C, B and C, or A, B and C. Wherein each of A, B, C may itself be an element or a collection of one or more elements.

In embodiments of the application, "exemplary," "in some embodiments," "in another embodiment," etc. are used to indicate an example, instance, or illustration. Any embodiment or design described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, the term use of an example is intended to present concepts in a concrete fashion.

"Of", "corresponding (corresponding, relevant)" and "corresponding (corresponding)" in the embodiments of the present application may be sometimes mixed, and it should be noted that the meanings to be expressed are consistent when the distinction is not emphasized. In the embodiments of the present application, communications and transmissions may sometimes be mixed, and it should be noted that, when the distinction is not emphasized, the meaning expressed is consistent. For example, a transmission may include sending and/or receiving, either nouns or verbs.

The equal to that related in the embodiment of the application can be used together with the greater than the adopted technical scheme, can also be used together with the lesser than the adopted technical scheme. It should be noted that when the number is equal to or greater than the sum, the number cannot be smaller than the sum; when the value is equal to or smaller than that used together, the value is not larger than that used together.

Some terms related to the embodiments of the present application are explained below to facilitate understanding by those skilled in the art.

1. And a terminal device. In the embodiment of the present application, the terminal device is a device with a wireless transceiver function, and may be referred to as a terminal (terminal), a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), an access terminal device, a vehicle-mounted terminal device, an industrial control terminal device, a UE unit, a UE station, a mobile station, a remote terminal device, a mobile device, a UE terminal device, a wireless communication device, a UE agent, or a UE apparatus. The terminal device may be fixed or mobile. It should be noted that the terminal device may support at least one wireless communication technology, such as long term evolution (long term evolution, LTE), new radio, NR, etc. For example, the terminal device may be a mobile phone, a tablet, a desktop, a notebook, a body, a car-mounted terminal, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned (SELF DRIVING), a wireless terminal in teleoperation (remote medical surgery), a wireless terminal in smart grid (SMART GRID), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (SMART CITY), a wireless terminal in smart home (smart home), a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal DIGITAL ASSISTANT, PDA), a handheld device with wireless communication functionality, a computing device or other processing device connected to a wireless modem, a wearable device, a terminal device in a future mobile communication network, or a terminal in a future evolved public mobile network (public land mobile network, PLMN) or the like. In some embodiments of the present application, the terminal device may also be a device with a transceiver function, such as a chip system. The chip system may include a chip and may also include other discrete devices.

2. A network device. In the embodiment of the present application, the network device is a device that provides a wireless communication function for the terminal device, and may also be referred to as an access network device, a radio access network (radio access network, RAN) device, or the like. Wherein the network device may support at least one wireless communication technology, e.g., LTE, NR, etc. By way of example, network devices include, but are not limited to: a next generation base station (gNB), an evolved node B (eNB), a radio network controller (radio network controller, RNC), a Node B (NB), a base station controller (base station controller, BSC), a base transceiver station (base transceiver station, BTS), a home base station (e.g., home evolved node B, or home node B, HNB), a baseband unit (BBU), a transceiving point (TRANSMITTING AND RECEIVING point, TRP), a transmitting point (TRANSMITTING POINT, TP), a mobile switching center, and the like in a fifth generation mobile communication system (5 th-generation, 5G). The network device may also be a wireless controller, a centralized unit (centralized unit, CU), and/or a Distributed Unit (DU) in the cloud wireless access network (cloud radio access network, CRAN) scenario, or the network device may be a relay station, an access point, an in-vehicle device, a terminal device, a wearable device, and a network device in future mobile communications or a network device in a future evolved PLMN, etc. In some embodiments, the network device may also be an apparatus, such as a system-on-a-chip, having functionality for providing wireless communication for the terminal device. By way of example, the chip system may include a chip, and may also include other discrete devices.

Referring to fig. 1a, fig. 1a is a schematic structural diagram of a communication system according to an embodiment of the application. The communication system may include, but is not limited to, one or more network devices, one or more terminal devices, such as one network device 101 and one terminal device 102 as illustrated in fig. 1a, where the network device 101 in fig. 1a is illustrated as a base station, the terminal device 102 is illustrated as a mobile phone, and the terminal device 102 may establish a wireless link with the network device 101 for communication. The communication system shown in fig. 1a includes, but is not limited to, network devices and terminal devices, and may also include other communication devices, and the number and form of the devices shown in fig. 1a are used as examples and are not limiting on the embodiments of the present application.

Before describing the communication method of the present application, the concepts related to the present application will be described:

1. Random access procedure

The following describes a four-step random access procedure with reference to fig. 1b, which may specifically comprise the following steps:

The first step: the UE sends Msg1 (i.e. message 1) to the base station.

Specifically, the UE selects one SSB from the Synchronization signal and the PBCH block (Synchronization SIGNAL AND PBCH block) that satisfy the conditions, then selects one preamble, and sends the random access preamble, that is, msg1, at a physical random access channel transmission opportunity (PRACH transmission occasion, or written as PRACH timing, abbreviated as RO) resource that allows initiation.

And a second step of: the base station sends Msg2 (i.e. message 2) to the UE.

The UE receives a random access response, msg2, sent by the base station. Optionally, the UE receives RAR data by detecting a physical downlink control channel (Physical Downlink Control Channel, PDCCH) scrambled by a Random Access RNTI (RA-RNTI), which includes a timing advance indication TIMING ADVANCE command, an uplink grant UL grant carrying scheduling information for the UE to send Msg 3. Multiple UEs will select the same RO and preamble to initiate the random access procedure, and there will be a collision, so two steps of the procedure need to be performed to resolve the collision.

And a third step of: the UE sends Msg3 (i.e. message 3) to the base station.

The UE sends Msg3 using the scheduling grant received in Msg2, and for the UE in the non-connected state, sends an RRC CCCH message, which includes a message such as RRC setup request RRCSetupRequest or RRC resume request RRCResumeRequest or RRCResumeRequest1, where part of the information carried therein is used as a UE identifier for collision resolution.

Fourth step: the base station sends Msg4 (i.e. message 4) to the UE.

The base station sends Msg4 to the UE, the UE receives the PDCCH by using the TC-RNTI received by the Msg3, analyzes the Msg4 carried in the PDCCH, and considers that the conflict resolution is successful if Contention Resolution IDENTITY MAC CE is carried in the received data.

2. Association between beam, SSB and random access channel occasion (RACH Occasion, RO) resources

One NR cell may typically use multiple beams and the network device transmits SSBs by means of beam scanning Beam Sweeping. The terminal device can identify different beams through the SSB sent by the cell, that is, there is a correspondence between the SSB and the beams. The beam may be a transmission beam used for transmitting the SSB or may be a reception beam used for receiving the SSB or may be a spatial transmission filtering parameter used for transmitting the SSB or may be a spatial reception filtering parameter used for receiving the SSB. If the corresponding relation exists between the SSB1 and the beam 1, and the terminal equipment detects that the signal quality (such as RSRP) of the SSB1 sent by the network equipment is greater than or equal to a threshold value, the beam 1 corresponding to the SSB1 is determined to be an available beam.

There is also an association between SSB and random access channel occasion (RACH Occasion, RO) resources. For example, the association relationship may be a 1-to-1 association relationship, or a plurality of pairs of 1, or a 1-to-many association relationship, and the specific association relationship is configured by the serving cell. The terminal device may initiate random access to the network device on the RO resource corresponding to the determined available beam, such as sending a message during random access on the RO resource. The above example is explained, that is, message 1 in the random access procedure is transmitted on the RO resource corresponding to SSB 1. Wherein, the corresponding relation can be configured by the network side through high-layer signaling.

Alternatively, when the terminal device is in the message 1 retransmission state or in the message 1 retransmission active state, the terminal device does not expect the situation that the network side configures one RO resource corresponding to a plurality of SSBs.

As shown in fig. 1c, a schematic diagram of an association relationship between an SSB and RO resources is provided in an embodiment of the present application, where one SSB may associate two RO resources as shown in the figure. It is understood that one SSB may be associated with one RO resource.

3. QCL relation

The channel macro-scale characteristic parameters of two signals having a QCL relationship are correlated, which may refer to having the same channel macro-scale characteristic parameters, or the channel macro-scale characteristic parameters of one signal may be used to determine the channel macro-scale characteristic parameters of another signal having a QCL relationship with the signal, or the channel macro-scale characteristic parameters of the two signals differ by less than a threshold. The channel large scale characteristic parameter may include at least one of: doppler spread, doppler shift, average delay, delay spread, spatial receive filter parameters, or spatial transmit filter parameters.

Specifically, the QCL relationship may also include the following types:

'QCL-TypeA': { Doppler shift (Doppler shift), doppler spread (Doppler spread), average delay (AVERAGE DELAY), delay spread (DELAY SPREAD) }

-'QCL-TypeB':{Doppler shift,Doppler spread}

-'QCL-TypeC':{Doppler shift,average delay}

'QCL-TypeD': spatial Rx parameters (Spatial Rx parameter)

The QCL relationship mentioned in the present invention may be 1 or more of the above QCL types, and the present invention is not limited.

As shown in fig. 2, a flow chart of an embodiment of a message transmission method provided by the present application, as shown in fig. 2, may include, but is not limited to, the following steps:

101, the network device sends a message 4, and correspondingly, the terminal device receives the message 4. The DMRS of the PDSCH of the bearer message 4 has a quasi co-sited QCL relationship with a first SSB of at least two SSBs, where the at least two SSBs are SSBs corresponding to repeated transmission of the message 1, or the DMRS of the PDSCH of the bearer message 4 has a QCL relationship with a reference signal of the PDSCH of the bearer message 2, or the DMRS of the PDSCH of the bearer message 4 has a QCL relationship with a reference signal of the PUSCH of the physical uplink shared channel of the bearer message 3. Alternatively, all the mentioned QCL relations in the present invention may refer to either spatial reception filtering parameters or spatial transmission filtering parameters or spatial filtering parameters or to QCL-Type D Type or QCL-Type a Type.

In the embodiment of the application, the terminal equipment can repeatedly transmit the message 1 for a plurality of times so as to realize coverage enhancement. For example, the message 1 may correspond to at least two SSBs for multiple transmissions. Wherein, the repeated transmission of the message 1 corresponds to at least two SSBs, which can be understood as repeated transmission of the message 1 using at least two different beams corresponding to the at least two SSBs, one SSB corresponding to each beam. It is understood that the number of retransmissions of message 1 may be the same or different from the corresponding number of SSBs. For example, four repeated transmissions of message 1 may be implemented using two different beams corresponding to two SSBs, in which the number of repeated transmissions of message 1 is different from the number of corresponding SSBs. Four repeated transmissions of message 1 may also be implemented using four different beams corresponding to the four SSBs, and the present application is not limited thereto. In one implementation, the at least two SSBs may be selected by the terminal device based on the received measurements of the plurality of SSBs. For example, the at least two SSBs may be the first at least two SSBs, which are ranked in order of higher signal quality, among the plurality of SSBs received. In another implementation, the at least two SSBs may be selected from SSBs whose signal quality satisfies a condition, for example, a reference signal received Power (REFERENCE SIGNAL RECEIVING Power, RSRP) of the SSBs is greater than a certain threshold.

In the scenario where the repeated multiple transmissions of message 1 correspond to at least two SSBs, i.e. where message 1 is repeated using at least two different beams, the following illustrates how to determine a signal having a QCL relationship with the DMRS of the PDSCH carrying message 4:

In mode 1, the DMRS of the PDSCH carrying the message 4 has a QCL relationship with the first SSB of the at least two SSBs.

In one implementation, the first SSB is an SSB corresponding to a first transmission in a plurality of repetitions of the transmission, or the first SSB is an SSB corresponding to a second transmission in a plurality of repetitions of the transmission; the first transmission is the transmission with the earliest transmission time in the repeated multiple transmissions, and the second transmission is the transmission with the latest transmission time in the repeated multiple transmissions.

Specifically, the SSB corresponding to the transmission time earliest among the repeated multiple transmissions of the message 1 may be determined as a signal having a QCL relationship with the DMRS of the PDSCH carrying the message 4. For example, the message 1 is repeated four times with two SSBs, SSB1 and SSB2, respectively. The four repeated transmissions of the message 1 are respectively a first transmission message 1, a second transmission message 1, a third transmission message 1 and a fourth transmission message 1 according to time sequence, wherein the first transmission message 1 and the third transmission message 1 correspond to SSB1, namely the first transmission message 1 and the third transmission message 1 use beams corresponding to SSB1, the second transmission and the fourth transmission correspond to SSB2, namely the second transmission and the fourth transmission use beams corresponding to SSB2. The first transmission with the earliest transmission time is the first transmission of message 1, and SSB corresponding to the first transmission of message 1 is SSB1, so SSB1 is taken as the first SSB, and the first SSB has a QCL relationship with the DMRS of the PDSCH carrying message 4.

Specifically, the SSB corresponding to the transmission with the latest transmission time among the repeated multiple transmissions of the message 1 may be determined as a signal having a QCL relationship with the DMRS of the PDSCH carrying the message 4. For example, the message 1 is repeated four times with two SSBs, SSB1 and SSB2, respectively. The four repeated transmissions of the message 1 are respectively a first transmission message 1, a second transmission message 1, a third transmission message 1 and a fourth transmission message 1 according to time sequence, wherein the first transmission message 1 and the third transmission message 1 correspond to SSB1, namely the first transmission message 1 and the third transmission message 1 use beams corresponding to SSB1, the second transmission and the fourth transmission correspond to SSB2, namely the second transmission and the fourth transmission use beams corresponding to SSB2. The transmission of the latest transmission time is the fourth transmission of message 1, and SSB corresponding to the fourth transmission of message 1 is SSB2, so SSB2 is taken as the first SSB, and the first SSB has a QCL relationship with the DMRS of the PDSCH carrying message 4.

In another implementation manner, the first SSB may be an SSB corresponding to an RO with a highest resource index number in at least two RO resources associated with the at least two SSBs; or the first SSB may be an SSB corresponding to an RO with the lowest resource index number in at least two RO resources associated with the at least two SSBs; or the first SSB may be an SSB corresponding to an RO resource with the highest frequency position in at least two RO resources associated with the at least two SSBs; or the first SSB may be an SSB corresponding to an RO resource with the lowest frequency position in at least two RO resources associated with the at least two SSBs. For example, SSB1 is associated with RO1, SSB2 is associated with RO2, and SSB3 is associated with RO3, wherein the frequency domain position of RO1 is lowest, the frequency domain position of RO2 is next lowest, and the frequency domain position of RO3 is highest, and therefore, either SSB1 associated with RO1 is taken as the first SSB, or SSB3 associated with RO3 is taken as the first SSB.

Specifically, optionally, at least two RO resources associated with the at least two SSBs are determined, an RO with the highest resource index number in the at least two RO resources is determined, and the SSB corresponding to the RO with the highest resource index number is used as the first SSB. For example, the at least two SSBs include SSB1, SSB2, and SSB3, where the association relationship between each SSB and the RO resource is shown in fig. 1c, and it is understood that the association relationship shown in fig. 1c is only an example and is not a limitation of the present application. As shown in fig. 1c, the resource index numbers of at least two RO resources associated with the SSB1, SSB2, and SSB3 are RO1, RO2, RO3, RO4, RO5, and RO6, respectively. Since the resource index RO6 is highest, SSB3 associated with RO6 is regarded as the first SSB, and the first SSB has a QCL relationship with the DMRS of the PDSCH carrying the message 4.

Specifically, optionally, at least two RO resources associated with the at least two SSBs are determined, an RO with the lowest resource index number in the at least two RO resources is determined, and the SSB corresponding to the RO with the lowest resource index number is used as the first SSB. For example, the at least two SSBs include SSB1, SSB2, and SSB3, where the association relationship between each SSB and the RO resource is shown in fig. 1c, and it is understood that the association relationship shown in fig. 1c is only an example and is not a limitation of the present application. As shown in fig. 1c, the resource index numbers of at least two RO resources associated with the SSB1, SSB2, and SSB3 are RO1, RO2, RO3, RO4, RO5, and RO6, respectively. Since the resource index RO1 is the lowest, SSB1 associated with RO1 is regarded as the first SSB, and the first SSB has a QCL relationship with the DMRS of the PDSCH carrying the message 4.

In yet another implementation, the first SSB may be the SSB with the lowest SSB index number of the at least two SSBs, or the first SSB may be the SSB with the highest SSB index number of the at least two SSBs.

Specifically, alternatively, an SSB with the lowest SSB index number is determined from at least two SSBs, and the SSB with the lowest SSB index number is taken as the first SSB. For example, the at least two SSBs include SSB1, SSB2, and SSB3, where the index number of SSB1 is the lowest, so SSB1 is taken as the first SSB, and the first SSB has a QCL relationship with the DMRS of the PDSCH carrying the message 4.

Specifically, alternatively, an SSB with the highest SSB index number is determined from at least two SSBs, and the SSB with the highest SSB index number is taken as the first SSB. For example, the at least two SSBs include SSB1, SSB2, and SSB3, where the index number of SSB3 is the highest, so SSB3 is taken as the first SSB, and the first SSB has a QCL relationship with the DMRS of the PDSCH carrying the message 4.

In mode 2, the DMRS of the PDSCH carrying the message 4 may have the same QCL relationship with the reference signal of the PDSCH carrying the message 2.

The reference signal of the PDSCH carrying the message 2 may be DMRS. The DMRS of the PDSCH carrying the message 4 has the same QCL relationship with the reference signal carrying the PDSCH of the message 2, which can be understood that the DMRS of the PDSCH of the message 4 has the QCL relationship with the DMRS of the PDSCH of the message 2, or the DMRS of the PDSCH of the message 2 has the QCL relationship with the first signal, and the DMRS of the PDSCH of the message 4 has the QCL relationship with the first signal. For example, if the DMRS of the PDSCH of message 2 has a QCL relationship with SSB-1, then the DMRS of the PDSCH of message 4 also has a QCL relationship with SSB-1.

In mode 3, the DMRS of the PDSCH carrying the message 4 may have the same QCL relationship with the reference signal of the PUSCH carrying the message 3.

The reference signal of the PDSCH carrying the message 2 may be DMRS. The DMRS of the PDSCH of the message 4 and the DMRS of the PUSCH of the message 3 have the same QCL relationship, and it may be understood that the DMRS of the PDSCH of the message 4 and the DMRS of the PUSCH of the message 3 have the QCL relationship, or the DMRS of the PUSCH of the message 3 and the second signal have the QCL relationship, and the DMRS of the PDSCH of the message 4 and the second signal have the QCL relationship. For example, if DMRS of PUSCH of message 3 uses the same spatial filter coefficient as SSB1, DMRS of PDSCH of message 4 may also use the same spatial filter coefficient as SSB 1.

It can be appreciated that if the DMRS of the PDSCH carrying message 4 may have the same QCL relationship as the reference signal carrying the PUSCH of message 3, it can be understood that the spatial reception filtering parameter of the DMRS of the PDSCH of message 4 may be determined according to the spatial transmission filtering parameter of the DMRS carrying the PUSCH of message 3.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a communication device according to an embodiment of the application. The device may be a terminal device, or may be a device in a terminal device, for example, may be a chip or a chip module in the terminal device, or may be a device that can be matched with a terminal device for use. The communication device 300 shown in fig. 3 may comprise a receiving unit 301. Wherein:

A receiving unit 301, configured to receive a message 4, where a demodulation reference signal DMRS of a physical downlink shared channel PDSCH carrying the message 4 has a quasi co-sited QCL relationship with a first SSB of at least two synchronization signal blocks SSBs, where the at least two SSBs are SSBs corresponding to repeated multiple transmissions of a message 1, or the DMRS of the PDSCH carrying the message 4 has the same QCL relationship with a reference signal of the PDSCH carrying the message 2, or the DMRS of the PDSCH carrying the message 4 has the same QCL relationship with a reference signal of a physical uplink shared channel PUSCH carrying the message 3.

Wherein one SSB associates one or more RO resources.

The relevant content of the embodiment can be referred to the relevant content of the method embodiment. And will not be described in detail herein.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a communication device according to an embodiment of the application. The device may be a network device, or may be a device in a network device, for example, may be a chip or a chip module in the network device, or may be a device that can be matched with a network device for use. The communication apparatus 400 shown in fig. 4 may include a transmission unit 401. Wherein:

A sending unit 401, configured to send a message 4, where a demodulation reference signal DMRS carrying a physical downlink shared channel PDSCH of the message 4 has a quasi co-sited QCL relationship with a first SSB in at least two synchronization signal blocks SSBs, where the at least two SSBs are SSBs corresponding to repeated multiple transmissions of a message 1, or the DMRS carrying the PDSCH of the message 4 has the same QCL relationship with a reference signal carrying the PDSCH of a message 2, or the DMRS carrying the PDSCH of the message 4 has the same QCL relationship with a reference signal carrying a physical uplink shared channel PUSCH of a message 3.

In one possible implementation manner, the first SSB is an SSB corresponding to an RO with a highest resource index number in at least two random access opportunity RO resources associated with the at least two SSBs; or alternatively

The first SSB is the SSB corresponding to the RO with the lowest resource index number in at least two RO resources associated with the at least two SSBs; or alternatively

Wherein one SSB associates one or more RO resources.

In one possible implementation, the having QCL relationships includes channel large scale characteristics correlations including at least one of: doppler spread, doppler shift, average delay, delay spread, spatial receive filter parameters, and spatial transmit filter parameters.

Referring to fig. 5, fig. 5 is a schematic structural diagram of another communication device according to an embodiment of the present application, which is configured to implement the functions of the terminal device in fig. 2. The communication device 500 may be a terminal device or a device for a terminal device. The means for the terminal device may be a chip system or a chip within the terminal device. The chip system may be composed of a chip or may include a chip and other discrete devices.

The communication means may also be used to implement the functionality of the network device of fig. 2 described above. The communication apparatus 500 may be a network device or an apparatus for a network device. The means for the network device may be a system-on-chip or a chip within the network device. The chip system may be composed of a chip or may include a chip and other discrete devices.

The communication device 500 includes at least one processor 520 for implementing data processing functions of a terminal device or a network device in the method provided by the embodiment of the present application. The communication apparatus 500 may further include a communication interface 510 for implementing a transceiving operation of a terminal device or a network device in the method provided by the embodiment of the present application. In an embodiment of the application, the Processor 520 may be a central processing unit (Central Processing Unit, CPU), which may also be other general purpose processors, digital signal processors (DIGITAL SIGNAL processors, DSPs), application SPECIFIC INTEGRATED Circuits (ASICs), off-the-shelf Programmable gate arrays (Field-Programmable GATE ARRAY, FPGA) or other Programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. In an embodiment of the application, communication interface 510 may be a transceiver, circuit, bus, module, or other type of communication interface for communicating with other devices over a transmission medium. For example, the communication interface 510 is used to enable devices in the communication device 500 to communicate with other devices. Processor 520 utilizes communication interface 510 to transmit and receive data and is used to implement the method described above with respect to fig. 2 in the method embodiment described above.

The communications apparatus 500 can also include at least one memory 530 for storing program instructions and/or data. Memory 530 is coupled to processor 520. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, which may be in electrical, mechanical, or other forms for information interaction between the devices, units, or modules. Processor 520 may cooperate with memory 530. Processor 520 may execute program instructions stored in memory 530. At least one of the at least one memory may be included in the processor.

When the communication device 500 is powered on, the processor 520 may read the software program in the memory 530, interpret and execute instructions of the software program, and process data of the software program. When data needs to be transmitted wirelessly, the processor 520 performs baseband processing on the data to be transmitted, and outputs a baseband signal to a radio frequency circuit (not shown in fig. 5), and the radio frequency circuit performs radio frequency processing on the baseband signal and then transmits the radio frequency signal to the outside in the form of electromagnetic waves through an antenna. When data is transmitted to the communication device 500, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 520, and the processor 520 converts the baseband signal into data and processes the data.

In another implementation, the rf circuitry and antenna may be provided separately from the baseband processing processor 520, for example, in a distributed scenario, the rf circuitry and antenna may be remotely located from the communication device.

The specific connection medium between the communication interface 510, the processor 520, and the memory 530 is not limited to the above embodiments of the present application. The memory 530, the processor 520, and the communication interface 510 are connected in fig. 5 by a bus 540, which is shown in bold lines in fig. 5, and the connection between other components is merely illustrative and not restrictive. The buses may be classified as address buses, data buses, control buses, etc. For ease of illustration, only one thick line is shown in fig. 5, but not only one bus or one type of bus.

When the communication device 500 is specifically used for a terminal apparatus, for example, when the communication device 500 is specifically a chip or a chip system, the baseband signal may be output or received by the communication interface 510. When the communication device 500 is a terminal device, the radio frequency signal may be output or received by the communication interface 510.

It should be noted that, the communication device may execute the steps related to the terminal device or the network device in the foregoing method embodiment, and the implementation manner provided by each step may be referred to specifically, which is not described herein again.

For each device, product, or application to or integrated with a communication device, each module included in the device may be implemented by hardware such as a circuit, and different modules may be located in the same component (e.g., a chip, a circuit module, etc.) or different components in the terminal, or at least some modules may be implemented by using a software program, where the software program runs on a processor integrated inside the terminal, and the remaining (if any) some modules may be implemented by hardware such as a circuit.

The memory may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an erasable programmable ROM (erasable PROM, EPROM), an electrically erasable programmable ROM (ELECTRICALLY EPROM, EEPROM), or a flash memory, among others. The volatile memory may be random access memory (random access memory, RAM) which acts as external cache memory. By way of example, and not limitation, many forms of random access memory (random access memory, RAM) are available, such as static random access memory (STATIC RAM, SRAM), dynamic random access memory (dynamic random access memory, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (double DATA RATE SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (ENHANCED SDRAM, ESDRAM), synchronous link dynamic random access memory (SYNCHLINK DRAM, SLDRAM), and direct memory bus random access memory (direct rambus RAM, DR RAM).

The embodiment of the application provides a chip. The chip comprises: a processor and a memory. Wherein the number of processors may be one or more and the number of memories may be one or more. The processor, by reading the instructions and data stored on the memory, can perform the message transmission method shown in fig. 2 and the steps performed by the related embodiments.

As shown in fig. 6, fig. 6 is a schematic structural diagram of a module device according to an embodiment of the present application. The module device 600 may perform the steps related to the terminal device or the network device in the foregoing method embodiment, where the module device 600 includes: a communication module 601, a power module 602, a memory module 603 and a chip module 604. Wherein the power module 602 is configured to provide power to the module device; the storage module 603 is configured to store data and/or instructions; the communication module 601 is used for communicating with external equipment; the chip module 604 is configured to invoke the data and/or instructions stored in the storage module 603, and in combination with the communication module 601, can perform the message transmission method as shown in fig. 2 and the steps performed by the related embodiments.

The embodiment of the application also provides a computer readable storage medium. The computer readable storage medium stores a computer program comprising program instructions that, when executed by an electronic device, implement the steps performed by the terminal device in the message transmission method shown in fig. 2.

The computer readable storage medium may be an internal storage unit of the terminal device according to any of the foregoing embodiments, for example, a hard disk or a memory of the device. The computer readable storage medium may also be an external storage device of the terminal device or network device, such as a plug-in hard disk, a smart memory card (SMART MEDIA CARD, SMC), a Secure Digital (SD) card, a flash memory card (FLASH CARD) or the like, which are provided on the device. Further, the computer-readable storage medium may also include both an internal storage unit of the terminal device or the network device and an external storage device. The computer-readable storage medium is used to store the computer program and other programs and data required by the terminal device or network device. The computer-readable storage medium may also be used to temporarily store data that has been output or is to be output. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more sets of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., high-density digital video disc (digital video disc, DVD)), or a semiconductor medium. The semiconductor medium may be a solid state disk.

With respect to each of the apparatuses and each of the modules/units included in the products described in the above embodiments, it may be a software module/unit, a hardware module/unit, or a software module/unit, and a hardware module/unit. For example, for each device or product applied to or integrated on a chip, each module/unit included in the device or product may be implemented in hardware such as a circuit, or at least some modules/units may be implemented in software program, where the software program runs on a processor integrated inside the chip, and the remaining (if any) part of modules/units may be implemented in hardware such as a circuit; for each device and product applied to or integrated in the chip module, each module/unit contained in the device and product can be realized in a hardware manner such as a circuit, different modules/units can be located in the same component (such as a chip, a circuit module and the like) or different components of the chip module, or at least part of the modules/units can be realized in a software program, the software program runs on a processor integrated in the chip module, and the rest (if any) of the modules/units can be realized in a hardware manner such as a circuit; for each device and product applied to or integrated in the data acquisition node, each module/unit contained in each device and product may be implemented in hardware such as a circuit, different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components in the terminal, or at least part of the modules/units may be implemented in a software program, where the software program runs on a processor integrated in the data acquisition node, and the rest (if any) of the modules/units may be implemented in hardware such as a circuit.

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center by wired or wireless means.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

In the several embodiments provided in the present application, it should be understood that the disclosed method, apparatus and system may be implemented in other manners. For example, the device embodiments described above are merely illustrative; for example, the division of the units is only one logic function division, and other division modes can be adopted in actual implementation; for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown 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 may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may be physically included separately, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in hardware plus software functional units.

The integrated units implemented in the form of software functional units described above may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a gateway node, etc.) to perform part of the steps of the method according to the embodiments of the present invention.

Those skilled in the art will appreciate that implementing all or part of the above-described methods in accordance with the embodiments may be accomplished by way of a computer program stored on a computer readable storage medium, which when executed may comprise the steps of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a random-access Memory (Random Access Memory, RAM), or the like.

The above disclosure is illustrative of a preferred embodiment of the present application, and it is not to be construed as limiting the scope of the application, but rather as providing for the full or partial flow of the solution to the above-described embodiment, and equivalent variations according to the appended claims, will be apparent to those skilled in the art.

Claims

1. A method of message transmission, comprising:

2. The method of claim 1, wherein the first SSB is an SSB corresponding to a first transmission of the repeated transmissions; or alternatively; the first SSB is the SSB corresponding to the second transmission in the repeated transmission; the first transmission is the transmission with the earliest transmission time in the repeated multiple transmissions, and the second transmission is the transmission with the latest transmission time in the repeated multiple transmissions.

3. The method of claim 1, wherein the first SSB is an SSB corresponding to an RO resource with a highest resource index number among at least two random access opportunity RO resources associated with the at least two SSBs; or alternatively

Wherein one SSB associates one or more RO resources.

4. The method of claim 1, wherein the first SSB is the SSB with the lowest SSB index number of the at least two SSBs; or alternatively

5. The method of any of claims 1-4, wherein the having a QCL relationship comprises a channel large scale characteristic parameter correlation, the channel large scale characteristic parameter comprising at least one of: doppler spread, doppler shift, average delay, delay spread, spatial receive filter parameters, and spatial transmit filter parameters.

6. A method of message transmission, comprising:

7. The method of claim 6, wherein the first SSB is an SSB corresponding to a first transmission of the repeated transmissions; or alternatively; the first SSB is the SSB corresponding to the second transmission in the repeated transmission; the first transmission is the transmission with the earliest transmission time in the repeated multiple transmissions, and the second transmission is the transmission with the latest transmission time in the repeated multiple transmissions.

8. The method of claim 6, wherein the first SSB is an SSB corresponding to an RO resource with a highest resource index number among at least two random access opportunity RO resources associated with the at least two SSBs; or alternatively

Wherein one SSB associates one or more RO resources.

9. The method of claim 6, wherein the first SSB is the SSB with the lowest SSB index number of the at least two SSBs; or alternatively

10. The method of claim 6, wherein the having a QCL relationship comprises a channel large scale characteristic parameter correlation, the channel large scale characteristic comprising at least one of: doppler spread, doppler shift, average delay, delay spread, spatial receive filter parameters, and spatial transmit filter parameters.

11. A communication device, comprising:

A receiving unit, configured to receive a message 4, where a demodulation reference signal DMRS carrying a physical downlink shared channel PDSCH of the message 4 has a quasi-co-sited QCL relationship with a first SSB in at least two synchronization signal blocks SSBs, where the at least two SSBs are SSBs corresponding to repeated multiple transmissions of a message 1, or the DMRS carrying the PDSCH of the message 4 has the same QCL relationship with a reference signal carrying the PDSCH of a message 2, or the DMRS carrying the PDSCH of the message 4 has the same QCL relationship with a reference signal carrying the physical uplink shared channel PUSCH of a message 3.

12. A communication device, comprising:

A transmitting unit, configured to transmit a message 4, where a demodulation reference signal DMRS of a physical downlink shared channel PDSCH carrying the message 4 has a quasi co-sited QCL relationship with a first SSB of at least two synchronization signal blocks SSBs, where the at least two SSBs are SSBs corresponding to repeated multiple transmissions of a message 1, or the DMRS of the PDSCH carrying the message 4 has the same QCL relationship with a reference signal of the PDSCH carrying the message 2, or the DMRS of the PDSCH carrying the message 4 has the same QCL relationship with a reference signal of a physical uplink shared channel PUSCH carrying the message 3.

13. A communication device comprising a processor and a memory, the processor and the memory being interconnected, wherein the memory is adapted to store a computer program, the computer program comprising program instructions, the processor invoking the program instructions to perform the method according to any of claims 1-5 or to perform the method according to any of claims 6-10.

14. A chip comprising a processor and an interface, the processor and the interface coupled; the interface is for receiving or outputting signals, the processor is for executing code instructions to perform the method of any one of claims 1 to 5 or to perform the method of any one of claims 6 to 10.

15. The utility model provides a module equipment, its characterized in that, module equipment includes communication module, power module, storage module and chip module, wherein:

The power supply module is used for providing electric energy for the module equipment;

The storage module is used for storing data and/or instructions;

The communication module is used for communicating with external equipment;

the chip module is configured to invoke data and/or instructions stored by the memory module, perform the method according to any of claims 1 to 5, or perform the method according to any of claims 6-10 in combination with the communication module.

16. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program comprising program instructions which, when executed by an electronic device, implement the method of any one of claims 1 to 5 or the method of any one of claims 6 to 10.