CN109698738B

CN109698738B - Communication method and communication device

Info

Publication number: CN109698738B
Application number: CN201711243045.1A
Authority: CN
Inventors: 韩云博; 庄宏成
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-10-24
Filing date: 2017-11-30
Publication date: 2022-04-29
Anticipated expiration: 2037-11-30
Also published as: CN109698738A

Abstract

The embodiment of the application provides a communication method and a communication device, which can perform SFI configuration based on an authorized transmission scene and an unauthorized transmission scene, and further improve the system efficiency. The communication method comprises the following steps: a network device determines a first message, wherein the first message comprises time slot format related information (SFI), the SFI is at least used for indicating an Orthogonal Frequency Division Multiplexing (OFDM) symbol used for uplink or downlink or unknown in a time slot, and when the uplink OFDM symbol is included in the time slot, the first message is also used for indicating that the uplink OFDM symbol indicated by the SFI is used for grant-based transmission or non-grant-based transmission; and the network equipment sends the first message to terminal equipment.

Description

Communication method and communication device

Technical Field

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

Background

In existing cellular Communication systems, such as Global System for Mobile communications (GSM), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), and other systems, the supported Communication is mainly for voice and data Communication. The next generation (5G, fifth generation) mobile Communication system, such as New Radio (NR), will support not only voice and data Communication, but also massive internet of things Communication (mtc) and Low-Latency high-reliability Communication (URLLC), so as to meet the requirements of different services. For URLLC services, such as Vehicle-to-Vehicle (V2V), not only short transmission delay but also high reliability is required.

The NR system supports a flexible slot structure, i.e., one slot can be divided into 14 Orthogonal Frequency Division Multiplexing (OFDM) symbols (Symbol). The 14 OFDM symbols may be all used for uplink transmission, or Downlink transmission, or some OFDM symbols may be used for uplink transmission and some OFDM symbols may be used for Downlink (DL) transmission. In NR, the base station may use RRC signaling to indicate a semi-static timeslot structure, or use Group Common downlink control Information (Group Common DCI) to dynamically indicate a timeslot structure, where the timeslot structure may also be referred to as a timeslot Format (Slot Format) or timeslot Format related Information (SFI). However, in the prior art, the SFI message for changing the slot usage does not distinguish whether the slot is used in a scenario based on authorized transmission or in a scenario based on unauthorized transmission, which results in that when the base station needs to change the unauthorized resource used by the unauthorized transmission, a large number of configuration signaling parameters need to be issued to the UE, and the efficiency is low.

Disclosure of Invention

The application provides a communication method and a communication device, which can carry out SFI configuration based on a scene of authorized transmission and a scene of unauthorized transmission, and further improve the system efficiency.

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

a network device determines a first message, wherein the first message comprises time slot format related information (SFI), the SFI is at least used for indicating an Orthogonal Frequency Division Multiplexing (OFDM) symbol used for uplink or downlink or unknown in a time slot, and when the uplink OFDM symbol is included in the time slot, the first message is also used for indicating that the uplink OFDM symbol indicated by the SFI is used for grant-based transmission or non-grant-based transmission;

and the network equipment sends the first message to terminal equipment.

Therefore, in this embodiment, the network device may indicate, to the terminal device, an OFDM symbol used for uplink or downlink or unknown in the slot by sending the first message to the terminal device, and may also indicate that the OFDM symbol used for uplink is used for grant-based transmission or is used for non-grant-based transmission. Therefore, the SFI configuration based on authorized transmission and unauthorized transmission can be considered uniformly, so that the situation that the network equipment sends the configuration signaling parameters for changing the time slot usage to the terminal equipment can be avoided, the redundant overhead caused by sending repeated configuration signaling parameters is reduced, and the data transmission efficiency is improved. Here, the slot usage means that the uplink OFDM symbol in the slot is used for authorized transmission or the uplink OFDM symbol in the slot is used for unauthorized transmission.

Here, the first message may be semi-static signaling or dynamic signaling, such as System message MIB, SIB, RRC signaling, MAC CE signaling, physical control message (e.g., L1signaling, group common DCI), Remaining Minimum System Information (RMSI), Other System Information (OSI), and the like. In a specific implementation manner, the first message may be a Group Common DCI carrying an SFI, and the Group Common DCI may also be referred to as a Group Common PDCCH. It is understood that the Group Common DCI is a physical control message, and the receiving object may be a Group of terminal devices, so the Group Common DCI is understood as dynamic signaling.

Optionally, the first message further includes a first indication bit, where the first indication bit is used to indicate that the uplink OFDM symbol indicated by the SFI is used for grant-based transmission or used for non-grant-based transmission. In this way, whether the SFI in the first message is for grant-based transmission or non-grant-based transmission can be explicitly indicated by an indication bit included in the first message.

Optionally, before the network device determines the first message, the method further includes:

the network equipment sends a first indication message to the terminal equipment, wherein the first indication message is used for indicating the terminal equipment to detect a first Radio Network Temporary Identifier (RNTI) used by the first message;

wherein, the sending, by the network device, the first message to the terminal device includes:

and the network equipment scrambles the Cyclic Redundancy Check (CRC) of the first message by using the first RNTI and sends the scrambled first message to the terminal equipment.

Here, the first indication message may be semi-static signaling or dynamic signaling, such as system message MIB, SIB, RRC signaling, MAC CE signaling, physical control message (e.g., L1signaling, group common DCI), RMSI, OSI, or the like.

the network equipment sends a second indication message to the terminal equipment, wherein the second indication message is used for indicating the terminal equipment to detect a second RNTI or a third RNTI used by the first message;

if the first message is used for indicating that the uplink OFDM symbol indicated by the SFI is used for grant-based transmission, the network equipment scrambles the CRC of the first message by using the second RNTI and sends the scrambled first message to the terminal equipment;

if the first message is used to indicate that the uplink OFDM symbol indicated by the SFI is for unlicensed-based transmission, the network device scrambles the CRC of the first message using the third RNTI, and sends the scrambled first message to the terminal device.

Here, the second indication message may be semi-static signaling or dynamic signaling, such as system message MIB, SIB, RRC signaling, MAC CE signaling, physical control message (e.g., L1signaling, group common DCI), RMSI, OSI, or the like.

Optionally, the terminal device may send a response message corresponding to the second indication message to the network device to confirm that it successfully receives the second indication message.

Therefore, in the embodiment of the present application, by setting the corresponding relationship between the RNTI and the transmission based on the grant or the transmission based on the non-grant, the terminal device can know whether the SFI in the first message is used for the transmission based on the grant or the transmission based on the non-grant without explicitly indicating in the first message, that is, the first message can implicitly indicate whether the SFI is used for the transmission based on the grant or the transmission based on the non-grant.

the network device sends a third indication message to the terminal device, where the third indication message is used to indicate that the terminal device detects a first resource control set (CORESET) or a second CORESET used by the first message;

if the first message is used for indicating that the uplink OFDM symbol indicated by the SFI is used for transmission based on authorization, the network equipment transmits the first message to the terminal equipment in the first CORESET;

and if the first message is used for indicating that the uplink OFDM symbol indicated by the SFI is used for transmission based on non-authorization, the network equipment transmits the first message to the terminal equipment in the second CORESET.

Here, the third indication message may be semi-static signaling or dynamic signaling, such as system message MIB, SIB, RRC signaling, MAC CE signaling, physical control message (e.g., L1signaling, group common DCI), RMSI, OSI, or the like.

Optionally, the terminal device may send a response message corresponding to the third indication message to the network device to confirm that it successfully receives the third indication message.

Therefore, by setting the corresponding relationship between the CORESET and the transmission based on the authorization or the transmission based on the non-authorization, the terminal device can know whether the SFI in the first message is used for the authorized transmission or the non-authorized transmission without explicitly indicating in the first message, that is, the first message can implicitly indicate whether the SFI is used for the authorized transmission or the non-authorized transmission.

Optionally, in this embodiment of the application, a timeslot configured by the network device to the terminal device through the first message for the unauthorized transmission may use, by default, all OFDM symbols available for uplink data transmission in the timeslot, without specifically indicating which OFDM symbols may be used for the unauthorized transmission.

Optionally, the network device further sends, to the terminal device, indication information, where the indication information is used to indicate that at least part of OFDM symbols in the OFDM symbols that are indicated by the SFI and are available for uplink transmission are used for non-grant based transmission.

Here, the indication information may be one of configuration parameters of unauthorized transmission. Specifically, the network device may send the configuration parameters of the unauthorized transmission to the terminal device through semi-static signaling (such as RRC signaling, SIB, MIB, RMSI, or OSI), or dynamic signaling (such as physical control signaling), where the configuration parameters include the SFI parameters.

Therefore, in the embodiment of the present application, when the network device configures the SFI parameter used for the unauthorized transmission for the user equipment in a semi-static manner, the Grant-free resource that can be used by the terminal device will also be relatively static, and will not be frequently influenced by the Group Common DCI of the SFI. In addition, the network device may further indicate, in the configuration parameter of the unlicensed transmission, an uplink OFDM symbol or a micro slot that can be used for the unlicensed transmission, so that the configuration is more flexible.

Optionally, the sending, by the network device, the first message to the terminal device includes:

the network equipment sends the first message to the terminal equipment through Radio Resource Control (RRC) signaling; or

And the network equipment sends the first message to the terminal equipment through a physical control message.

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

the terminal equipment receives a first message sent by network equipment, wherein the first message comprises time slot format related information (SFI), the SFI is at least used for indicating an Orthogonal Frequency Division Multiplexing (OFDM) symbol used for uplink or downlink or unknown in a time slot, and when the uplink OFDM symbol is included in the time slot, the first message is also used for indicating that the uplink OFDM symbol indicated by the SFI is used for transmission based on authorization or transmission based on non-authorization.

When the terminal device receives the first message, the terminal device may determine, according to the first message, whether the uplink OFDM symbol in the slot indicated by the detected SFI is used for authorized transmission or unauthorized transmission, and the number of OFDM symbols in the slot used for uplink/downlink/unknown. Further, the terminal device receives downlink data or sends uplink data according to the first message.

Here, the first message may be semi-static signaling or dynamic signaling, such as system message MIB, SIB, RRC signaling, MAC CE signaling, physical control message (e.g., L1signaling, group common DCI), RMSI, OSI, or the like. In a specific implementation manner, the first message may be a Group Common DCI carrying an SFI, and the Group Common DCI may also be referred to as a Group Common PDCCH. It is understood that the Group Common DCI is a physical control message, and the receiving object may be a Group of terminal devices, so the Group Common DCI is understood as dynamic signaling.

Optionally, before the terminal device receives the first message sent by the network device, the method further includes:

the terminal equipment receives first indication information sent by the network equipment, wherein the first indication information is used for indicating the terminal equipment to detect a first Radio Network Temporary Identifier (RNTI) used by the first message;

the method for receiving the first message sent by the network device by the terminal device includes:

and the terminal equipment descrambles the CRC of the first message according to the first RNTI to acquire the information carried by the first message.

Optionally, before the terminal device receives the first message, the method further includes:

the terminal equipment receives a second indication message sent by the network equipment, wherein the second indication message is used for indicating the terminal equipment to detect a second RNTI or a third RNTI used by the first message;

if the terminal device uses the second RNTI to successfully descramble the CRC of the first message, the first message is used for indicating that the uplink OFDM symbol indicated by the SFI is used for transmission based on authorization;

if the terminal device uses the third RNTI to successfully descramble the CRC of the first message, the first message is used for indicating that the uplink OFDM symbol indicated by the SFI is used for non-authorization-based transmission.

It can be understood that the terminal device can successfully obtain the information in the first message only if the RNTI used by the terminal device to descramble the CRC of the first message is the same as the RNTI used by the network device to scramble the CRC of the first message. That is, when the terminal device can successfully descramble the CRC of the first message using the second RNTI, then the uplink OFDM symbol in the slot indicated by the SFI in the first message will be used for grant-based transmission. When the terminal device can successfully descramble the CRC of the first message using the third RNTI, then the uplink OFDM symbols in the slot indicated by the SFI in the first message will be used for non-grant based transmission.

the terminal device receives a third indication message sent by the network device, where the third indication message is used to indicate that the terminal device detects a first resource control set (CORESET) or a second CORESET used by the first message;

if the terminal device receives the first message at the first CORESET, the first message is used for indicating that the uplink OFDM symbol indicated by the SFI is used for transmission based on authorization;

if the terminal device receives the first message at the second core set, the first message is used for indicating that the uplink OFDM symbol indicated by the SFI is used for non-grant-based transmission.

Further, at this time, the terminal device receives the first message in the first core set and the second core set according to a third indication message sent by the network device. Specifically, if the terminal device successfully receives the first message in the first core set, the uplink OFDM symbol in the slot indicated by the SFI in the first message will be used for grant-based transmission. If the terminal device successfully receives the first message in the second CORESET, the uplink OFDM symbol in the time slot indicated by the SFI in the first message is used for non-authorization-based transmission.

Optionally, in this embodiment of the application, a timeslot configured by the network device to the terminal device through the first message for the unauthorized transmission may use, by default, all OFDM symbols available for uplink data transmission in the timeslot, without specifically indicating which OFDM symbols may be used for the unauthorized transmission. Correspondingly, the terminal device may use all OFDM symbols available for uplink data transmission in the slot for unlicensed transmission.

Optionally, the terminal device further receives indication information sent by the network device, where the indication information is used to indicate that at least a part of OFDM symbols in the OFDM symbols that are indicated by the SFI and are available for uplink transmission are used for non-grant based transmission.

In a third aspect, a communication method is provided, including:

the network equipment determines configuration information based on unauthorized transmission, wherein the configuration information comprises time slot format related information SFI, and the SFI is at least used for indicating an Orthogonal Frequency Division Multiplexing (OFDM) symbol used for uplink or downlink or unknown in a time slot;

and the network equipment sends the configuration information to the terminal equipment.

Optionally, the configuration information further includes indication information, where the indication information is used to indicate that at least a part of OFDM symbols in the OFDM symbols that are indicated by the SFI and are available for uplink transmission are used for transmission based on non-grant.

Optionally, the sending, by the network device, the configuration information to the terminal device includes:

and the network equipment sends the configuration information to the terminal equipment through Radio Resource Control (RRC) signaling.

Therefore, in the embodiment of the present application, when the network device is configured to use the configuration information based on the unauthorized transmission includes the SFI, the SFI parameter used for the unauthorized transmission can be configured for the user equipment in a semi-static manner, so that the Grant-free resource that can be used by the terminal device is also relatively static. In addition, the network device may further indicate, in the configuration parameter of the unlicensed transmission, an uplink OFDM symbol or a micro slot that can be used for the unlicensed transmission, so that the configuration is more flexible.

In a fourth aspect, a communication method is provided, including:

the method comprises the steps that terminal equipment receives configuration information which is sent by network equipment and used for unauthorized transmission, wherein the configuration information comprises time slot format related information SFI, and the SFI is at least used for indicating an orthogonal frequency division multiplexing OFDM symbol which is used for uplink or downlink or unknown in a time slot;

and the terminal equipment sends uplink data to the network equipment according to the SFI.

Optionally, the receiving, by the terminal device, configuration information based on unauthorized transmission sent by the network device includes:

and the terminal equipment receives the configuration information sent by the network equipment through Radio Resource Control (RRC) signaling.

In a fifth aspect, there is provided a communications apparatus configured to perform the method of any of the above aspects or any possible implementation manner of any aspect. In particular, the communication device comprises means for performing the method of any of the above aspects or any possible implementation of any of the aspects.

In a sixth aspect, a communication apparatus is provided, which includes: a transceiver, a memory, a processor, and a bus system. Wherein the transceiver, the memory and the processor are connected by the bus system, the memory is used for storing instructions, the processor is used for executing the instructions stored by the memory to control the transceiver to receive and/or transmit signals, and when the processor executes the instructions stored by the memory, the execution causes the processor to execute the method of any one of the above aspects or any possible implementation manner of any one of the above aspects.

In a seventh aspect, a computer-readable medium is provided for storing a computer program comprising instructions for performing the method in any possible implementation of any of the above aspects.

In an eighth aspect, there is provided a computer program product comprising: computer program code which, when executed by a communication unit, processing unit or transceiver, processor of a communication device (e.g. a terminal device or a network device), causes the communication device to perform the method of any possible implementation of any of the above aspects.

In a ninth aspect, there is provided a communication chip having instructions stored thereon, which when run on a communication device, cause the communication chip to perform the method of any of the possible implementations of any of the above aspects.

Drawings

Fig. 1 shows a schematic flow chart of a communication method of an embodiment of the present application.

Fig. 2 shows a flow chart of another communication method of the embodiment of the present application.

Fig. 3 is a diagram illustrating a frame format of a first message according to an embodiment of the present application.

Fig. 4 shows a schematic diagram of a timeslot configuration according to an embodiment of the present application.

Fig. 5 is a diagram illustrating another timeslot configuration according to an embodiment of the present application.

Fig. 6 shows a flow chart of another communication method of an embodiment of the present application.

Fig. 7 shows a flow chart of another communication method of an embodiment of the present application.

Fig. 8 shows a flow chart of another communication method of an embodiment of the present application.

Fig. 9 shows a schematic block diagram of a communication device according to an embodiment of the present application.

Fig. 10 shows a schematic block diagram of another communication device of an embodiment of the present application.

Fig. 11 shows a schematic block diagram of another communication device of an embodiment of the present application.

Fig. 12 shows a schematic block diagram of another communication apparatus according to an embodiment of the present application.

Fig. 13 shows a schematic block diagram of another communication apparatus according to an embodiment of the present application.

Fig. 14 shows a schematic block diagram of another communication apparatus according to an embodiment of the present application.

Fig. 15 shows a schematic block diagram of another communication apparatus according to an embodiment of the present application.

Fig. 16 shows a schematic block diagram of another communication apparatus according to an embodiment of the present application.

Detailed Description

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

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an LTE Frequency Division Duplex (FDD) System, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication System, a future fifth Generation (5G) System, or a New Radio Network (NR), etc.

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

The Network device in this embodiment may be a device for communicating with a terminal device, where the Network device may be a Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) System or a Code Division Multiple Access (CDMA) System, may also be a Base Station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) System, may also be an evolved node b (eNB, or eNodeB) in an LTE System, may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or may be a relay Station, an Access point, a vehicle-mounted device, a wearable device, a Network device in a future 5G Network, or a Network device in a future evolved PLMN Network, and the like, and the embodiment of the present invention is not limited.

Fig. 1 shows a schematic flow chart of a communication method provided in an embodiment of the present application.

110, a network device determines a first message, which includes a slot format related information SFI, wherein the SFI is used for indicating an orthogonal frequency division multiplexing, OFDM, symbol for uplink or downlink in a slot, and when the slot includes an uplink OFDM symbol, the first message is also used for indicating whether the uplink OFDM symbol indicated by the SFI is used for grant-based transmission or for non-grant-based transmission.

Specifically, the first message may be a semi-static signaling or a dynamic signaling, such as a System message Master Information Block (MIB), a System message Block (SIB), a Radio Resource Control (RRC) signaling, a MAC Control Element (MAC CE) signaling, a physical Control message (e.g., L1signaling, group common DCI), Remaining Minimum System Information (RMSI), or Other System Information (OSI). In a specific implementation manner, the first message may be a Group Common DCI carrying an SFI, and the Group Common DCI may also be referred to as a Group Common physical uplink control channel (GC-PDCCH). It is understood that the Group Common DCI is a physical control message, and the receiving object may be a Group of terminal devices, so the Group Common DCI is understood as dynamic signaling.

It should be noted that the network device herein may be a base station. Specifically, in a fourth generation mobile communication system (4G, such as LTE), a base station may be referred to as enb (enodeb), and in a next generation mobile communication system (also referred to as NR, New Radio, New air interface), a base station may be referred to as gnb (gnnodeb).

Here, the first message may dynamically, statically or semi-statically indicate the slot structure. Specifically, the SFI is at least used for indicating the orthogonal frequency division multiplexing OFDM symbols used for uplink or downlink or unknown in the time slot, that is, the SFI may be used for indicating that all OFDM symbols in the time slot may be used for uplink transmission or downlink transmission, or some OFDM symbols may be used for uplink transmission, some OFDM symbols may be used for downlink transmission, and some OFDM symbols are unknown (unknown) symbols. Here, an unknown OFDM symbol may be understood as an OFDM symbol whose purpose is uncertain, i.e., the OFDM symbol may be used at least for uplink, downlink, or as a blank resource. It should be noted that, at least, the unknown OFDM symbol may be configured as an uplink or downlink symbol by a network device (e.g., a base station) through dynamic signaling (e.g., DCI). Table 1 shows one possible way of indicating the slot structure (i.e., SFI). Here, the SFI may be indicated using 3 bits to represent up to 8 possible configuration cases of OFDM symbols available for downlink/unknown/uplink within one slot.

TABLE 1

Slot format	DL	Unknown	UL	Bits
					0	14	0	0	000
1	10	2	2	001
					2	8	2	4	010
3	6	2	6	011
					4	4	2	8	100
5	2	2	10	101
					6	0	0	14	110

It is to be understood that, in this embodiment of the present application, the SFI may also be used to indicate other OFDM symbols in a slot, which is not limited in this embodiment of the present application. For example, the SFI may also be used to indicate a reserved OFDM symbol in the slot, wherein the reserved OFDM symbol may be further configured as an unknown OFDM symbol or other OFDM symbol.

In this embodiment, the first message is further used to indicate that the uplink OFDM symbol in the slot indicated by the SFI is used for grant-based transmission or for non-grant-based transmission.

It is understood that the uplink OFDM symbols in a slot may be used for grant-based transmission or user non-grant-based transmission, in which case symbols other than the uplink OFDM symbols in the slot are used for grant-based transmission. That is to say, in the embodiment of the present application, the first message is further used to indicate that one or more slots indicated by the SFI may be used for grant-based transmission, or uplink OFDM symbols in the one or more slots may be used for non-grant-based transmission.

Specifically, compared with the conventional Grant-based (also referred to as UL Transmission with Grant) Transmission method, the next generation wireless communication network (e.g., NR) introduces a Transmission method based on non-Grant-free (also referred to as Grant-less, or UL Transmission with out Grant, etc.), that is, the network device divides one or more non-Grant Transmission areas (GFTA) for the terminal device, and the terminal device directly transmits uplink data (e.g., uplink Grant-free data) in the non-Grant Transmission areas without going through a process from a service request to a base station for uplink Grant. Therefore, it has great advantages in terms of network delay and signaling overhead. Here, the unlicensed transmission region may also be referred to as a Grant-free resource (Grant-free resource).

For unauthorized transmission, since the service is unpredictable, the Grant-free resource pre-configured by the network device has a need for dynamic update. For example, when more Grant-free resources are required, the pre-configured Grant-free resources need to be updated. Based on this, when the first message in the embodiment of the present application is further used to indicate that the uplink OFDM indicated by the SFI is used for grant-based transmission or for non-grant-based transmission, the first message can satisfy the requirement that the non-grant transmission dynamically configures its slot format in the time domain while satisfying the requirement that the grant transmission configures its slot format.

It should be noted that in the current standard, the unlicensed transmission is only used for uplink transmission, i.e. only uplink OFDM symbols may be used for unlicensed transmission. However, in future standards, the unlicensed transmission may also be used for downlink transmission, and in upcoming standards, a technical scheme for using downlink OFDM symbols for unlicensed transmission may also be implemented. It can be understood that, at this time, the indication for the authorized transmission or the unauthorized transmission performed on the uplink OFDM symbol in the present invention is also applicable to the downlink OFDM symbol, i.e. the first message may also be used to indicate that the downlink OFDM symbol indicated by the SFI is used for the authorization-based transmission or for the unauthorized transmission.

And 120, the network equipment sends the first message to the terminal equipment.

Specifically, the network device may send the first message to the terminal device through radio resource control RRC signaling, or the network device sends the first message to the terminal device through a physical control message. Here, the number of terminal devices may be one or more.

When the terminal device receives the first message, the terminal device may determine, according to the first message, whether the uplink OFDM symbol in the slot indicated by the detected SFI is used for authorized transmission or unauthorized transmission, and the number of OFDM symbols in the slot used for uplink/downlink/unknown.

Fig. 2 is a flowchart illustrating another communication method provided in an embodiment of the present application. It should be understood that fig. 2 shows steps or operations of the communication method, but the steps or operations are only examples, and other operations or variations of the operations in fig. 2 may be performed by the embodiments of the present application. Moreover, the various steps in FIG. 2 may be performed in a different order presented in FIG. 2, and it is possible that not all of the operations in FIG. 2 may be performed.

201, a Network device sends a first indication message to a terminal device, where the first indication message is used to indicate that the terminal device detects a first Radio Network Temporary Identity (RNTI) used by the first message. Specifically, the first message may refer to the description in fig. 1 above, and is not described herein again to avoid repetition.

Optionally, after step 201, step 202 may also be executed, where 202 is specifically that the terminal device sends a response message corresponding to the first indication message to the network device. As an example, when the terminal device successfully receives a first indication message (e.g., RRC signaling) sent by the network device, the terminal device sends a response message corresponding to the first indication message to the network device to confirm that it successfully receives the first indication message.

The network device sends 203 a first message to the terminal device.

Specifically, the network device scrambles a Cyclic Redundancy Check (CRC) in the first message using the first RNTI in 201 to distinguish it from other possible Group Common DCI types (i.e. different RNTI scrambled Group Common DCI types may not have the same meaning of carrying the indicator bit). Then, the network device sends the scrambled first message to the terminal device.

Further, after receiving the first message sent by the network device, the terminal device demodulates the information carried in the first message according to the RNTI delivered by the network device in step 201, and determines whether the detected uplink OFDM symbol in the time slot indicated by the SFI is used for authorized transmission or unauthorized transmission, and the number of the uplink/downlink/unknown OFDM symbols in the time slot.

It should be noted that if step 202 exists, step 203 is executed after step 202. It should be further noted that step 203 and step 201 (or step 201 and step 202) are relatively independent steps, that is, step 203 may be executed one or more times after step 201 (or step 201 and step 202).

Optionally, in this embodiment of the application, the first message further includes a first indication bit, where the first indication bit is used to indicate that the uplink OFDM symbols in the slot indicated by the SFI are used for grant-based transmission or for non-grant-based transmission, that is, is used to indicate that one or more slots indicated by the SFI may be used for grant-based transmission or that the uplink OFDM symbols in the slot may be used for non-grant-based transmission. In this way, whether the SFI in the first message is for grant-based transmission or non-grant-based transmission can be explicitly indicated by an indication bit included in the first message.

Fig. 3 is a schematic diagram illustrating a frame format of a first message according to an embodiment of the present application, where the first message may be a Group Common DCI, for example. Specifically, the first message may use a 1-bit indicator bit to indicate the transmission type. For example, when the indicator bit is set to "1," it may indicate that the slot is to be used for grant based transmission; when the indicator bit is set to "0," it may indicate that the slot is to be used for non-grant based transmission. Alternatively, when the indicator bit is set to "0," it may indicate that the slot is to be used for grant based transmission; when the indicator bit is set to "1," it may indicate that the slot is to be used for non-grant based transmission.

It should be noted that, here, one slot is used for grant-based transmission, that is, all OFDM symbols (i.e., uplink/downlink/unknown OFDM symbols) in the slot are used for grant-based transmission; one slot is used for non-grant based transmission, i.e., the uplink OFDM symbol in the slot is used for non-grant based transmission, and the other symbols in the slot except the uplink OFDM symbol are used for grant based transmission.

Fig. 4 is a schematic diagram illustrating a timeslot configuration according to an embodiment of the present application. Specifically, the network device configures one or more time slots (i.e., Grant-free resources) that can be used for unauthorized transmission through semi-static configuration or dynamic configuration, and the remaining time slots can be used for transmission based on authorization. Here, the network device may adjust one or more time slots for the authorized transmission to be time slots for the unauthorized transmission through the first message, so as to flexibly meet the requirement of the authorized transmission for resources.

For example, when the traffic carried in the Grant-free resources or the collision between terminal devices is severe, the network device may configure a part of the time slots originally used for the authorized transmission to the unauthorized transmission, and may adjust the ratio of the uplink OFDM symbols to the downlink OFDM symbols through the SFI (e.g., increase the number of the uplink OFDM symbols in the time slots), so as to increase the resources that can be used by the unauthorized transmission and improve the system efficiency. Here, the collision may mean that Grant-free resources on a time-frequency domain used for uplink data transmission between a plurality of terminal devices are completely or partially overlapped, so that the network device cannot correctly demodulate the uplink data sent by the plurality of terminal devices.

Further, the Grant-free resource reconfigured by the network device through the first message may use, in addition to the time-frequency domain parameter, parameters used for other unauthorized transmissions, such as Modulation and Coding Scheme (MCS), Power Control parameter (Power Control Related parameter), Demodulation Reference Signal (DMRS) configuration information of the user equipment, and the like, that are already configured in the same frequency domain resource.

Fig. 5 is a schematic diagram illustrating another timeslot configuration provided in an embodiment of the present application. Specifically, the network device configures one or more time slots (i.e., Grant-free resources) that can be used for Grant transmission through semi-static configuration or dynamic configuration, and the remaining time slots can be used for Grant-based transmission. Here, the network device may adjust one or more time slots for the unlicensed transmission to be time slots for the licensed transmission through the first message, so as to flexibly meet the requirement of the licensed transmission for resources.

Fig. 6 is a flowchart illustrating another communication method provided in an embodiment of the present application. It should be understood that fig. 6 shows steps or operations of the communication method, but the steps or operations are only examples, and other operations or variations of the operations in fig. 6 may be performed by the embodiments of the present application. Moreover, the various steps in FIG. 6 may be performed in a different order presented in FIG. 6, and it is possible that not all of the operations in FIG. 6 may be performed.

601, the network device sends a second indication message to the terminal device, where the second indication message is used to indicate the terminal device to detect a second RNTI or a third RNTI used by the first message. Here, the second RNTI and the third RNTI may be used to distinguish whether an uplink OFDM symbol in a slot indicated by the SFI is used for grant-based transmission or non-grant-based transmission, i.e., to distinguish whether one or more slots indicated by the SFI may be used for grant-based transmission or an uplink OFDM symbol in the slot may be used for non-grant-based transmission. Specifically, the first message may refer to the description in fig. 1 above, and is not described herein again to avoid repetition.

Optionally, step 602 may be further performed after step 601, where step 602 is specifically that the terminal device sends a response message corresponding to the second indication message to the network device. As an example, when the terminal device successfully receives the second indication message (e.g., RRC signaling) sent by the network device, the terminal device sends a response message corresponding to the second indication message to the network device to confirm that it successfully receives the second indication message.

603, the network device sends a first message to the terminal device.

Specifically, if the first message is used to indicate that the uplink OFDM symbol indicated by the SFI is used for grant-based transmission, the network device scrambles the CRC of the first message using the second RNTI, and sends the scrambled first message to the terminal device. It is understood that, here, when the uplink OFDM symbol in the slot indicated by the SFI is used for grant-based transmission, other OFDM symbols in the slot than the uplink OFDM symbol are also used for grant-based transmission.

If the first message is used to indicate that the uplink OFDM symbol indicated by the SFI is for unlicensed-based transmission, the network device scrambles the CRC of the first message using the third RNTI, and sends the scrambled first message to the terminal device. It is understood that, here, when the uplink OFDM symbol in the slot indicated by the SFI is for the non-grant based transmission, the other OFDM symbols in the slot other than the uplink OFDM symbol are for the grant based transmission.

It should be noted that, in the embodiment of the present application, if there is step 602, step 603 is executed after step 602.

Further, in this embodiment of the application, after receiving a first message sent by a network device, a terminal device descrambles a CRC of the first message according to a second RNTI and a third RNTI issued by the network device in step 601.

Fig. 7 is a flowchart illustrating another communication method provided in an embodiment of the present application. It should be understood that fig. 7 shows steps or operations of the communication method, but the steps or operations are only examples, and other operations or variations of the operations in fig. 7 may be performed by the embodiments of the present application. Moreover, the various steps in FIG. 7 may be performed in a different order than presented in FIG. 7, and it is possible that not all of the operations in FIG. 7 may be performed.

701, the network device sends a third indication message to the terminal device, where the third indication message is used to indicate that the terminal device detects a first resource control set, core, or a second core, used by the first message. Here, the first core set and the second core set may be used to distinguish whether the uplink OFDM symbols in the slot indicated by the SFI are used for grant-based transmission or non-grant-based transmission, that is, to distinguish that one or more slots indicated by the SFI may be used for grant-based transmission or the uplink OFDM symbols in the slot may be used for non-grant-based transmission. Specifically, the first message may refer to the description in fig. 1 above, and is not described herein again to avoid repetition.

Optionally, step 702 may be further executed after step 701, where 702 is specifically that the terminal device sends a response message corresponding to the third indication message to the network device. As an example, when the terminal device successfully receives the third indication message (e.g., RRC signaling) sent by the network device, the terminal device sends a response message corresponding to the third indication message to the network device to confirm that it successfully receives the third indication message.

703, the network device sends a first message to the terminal device.

Specifically, if the first message is used to indicate that the uplink OFDM symbol indicated by the SFI is used for grant-based transmission, the network device issues the first message to the terminal device in the first core set. It is understood that, here, when the uplink OFDM symbol in the slot indicated by the SFI is used for grant-based transmission, other OFDM symbols in the slot than the uplink OFDM symbol are also used for grant-based transmission.

And if the first message is used for indicating that the uplink OFDM symbol indicated by the SFI is used for transmission based on non-authorization, the network equipment transmits the first message to the terminal equipment in the second CORESET. It is understood that, here, when the uplink OFDM symbol in the slot indicated by the SFI is for the non-grant based transmission, the other OFDM symbols in the slot other than the uplink OFDM symbol are for the grant based transmission.

It should be noted that, in the embodiment of the present application, if there is step 702, step 703 is executed after step 702.

Further, at this time, the terminal device receives the first message in the first core set and the second core set according to the third indication message sent by the network device in step 701. Specifically, if the terminal device successfully receives the first message in the first core set, the uplink OFDM symbol in the slot indicated by the SFI in the first message will be used for grant-based transmission. If the terminal device successfully receives the first message in the second CORESET, the uplink OFDM symbol in the time slot indicated by the SFI in the first message is used for non-authorization-based transmission.

Optionally, in this embodiment of the application, the time slot configured by the network device to the terminal device through the first message for the unlicensed transmission may be at least part of OFDM symbols in the OFDM symbols available for uplink data transmission in the time slot. At this time, the indication bits may be further used to indicate which OFDM symbols the at least part of OFDM symbols in the slot are. Specifically, the network device may further send, to the terminal device, indication information indicating that at least some OFDM symbols of the OFDM symbols indicated by the SFI that are available for uplink transmission are used for non-grant based transmission. Specifically, the indication information may be a bit in the first information, or one of configuration parameters for unauthorized transmission.

When the indication information is one of the configuration parameters of the unauthorized transmission, the network device may send the configuration parameters of the unauthorized transmission to the terminal device through semi-static signaling (such as RRC signaling, SIB, MIB, RMSI, OSI, or the like) or dynamic signaling (such as physical control signaling), where the configuration parameters may include SFI. The OFDM symbols used for uplink in the slot may all be used for unlicensed-based transmission, and may also indicate, in configuration signaling of unlicensed transmission, which OFDM symbols of the plurality of OFDM symbols available for uplink may be used for unlicensed transmission.

As an example, when there are M (M is a non-negative integer) OFDM symbols available for uplink in the timeslot, the network device may further indicate that N (N ≦ M, N may be a non-negative integer) OFDM symbols of the M OFDM symbols available for uplink are available for unlicensed transmission in a first message sent to the terminal device or configuration signaling for unlicensed transmission.

In addition, the position of the N OFDM symbols is not limited in this embodiment. For example, the first N of the M OFDM symbols may be used for unlicensed transmission, or the last N of the M OFDM symbols may be used for unlicensed transmission, or some N of the M OFDM symbols may be used for unlicensed transmission.

As another example, when one timeslot includes a plurality of mini-slots (or non-slots), the network device may notify the terminal device of the mini-slots used for unauthorized transmission, such as a mini-slot number (also referred to as a mini-slot number, a mini-slot index number, or the like), a mini-slot combination condition, or the like, in a first message sent to the terminal device or a configuration signaling of unauthorized transmission.

The following description will take the micro-slot combination as an example. Specifically, the network device may carry a plurality of bit indication bits in a configuration signaling of the unlicensed transmission to indicate which minislots or uplink minislots are available for the unlicensed transmission. For example, the indication may be performed by using a bitmap (bitmap), that is, each micro slot may correspond to a 1-bit indication bit, "1" indicates that the corresponding micro slot is used, "0" indicates that the corresponding micro slot is not used, or "0" indicates that the corresponding micro slot is used, and "1" indicates that the corresponding micro slot is not used. As another example, several indicator bits may be used to indicate a possible variety of micro-slot combinations. For example, when indicated using a 3bit indicator bit, "000" may indicate the use of minislot 1/2/3 or a minislot 1/2/3 for uplink, and "001" may indicate the use of minislot 3/4/5 or a minislot 3/4/5 for uplink, or may be indicated in other manners, which are not limited herein.

Fig. 8 shows a schematic flow chart of a communication method provided in an embodiment of the present application.

810, the network device determines configuration information for unlicensed transmission, where the configuration information includes slot format related information SFI, where the SFI is at least used to indicate an orthogonal frequency division multiplexing, OFDM, symbol used for uplink or downlink or unknown in a slot.

Here, the configuration information for unlicensed-based transmission may also be referred to as a configuration parameter, and the configuration information or the configuration parameter may include an SFI, which may be used to indicate the number of OFDM symbols to be used for uplink/downlink/unknown in a slot in resources for unlicensed transmission.

In the embodiment of the present application, all OFDM symbols used for uplink in a slot may be used for unlicensed-based transmission.

Alternatively, it may also be indicated in the configuration signaling of the unlicensed transmission which OFDM symbols of the plurality of OFDM symbols available for uplink may be used for unlicensed transmission. That is to say, the configuration information may further include indication information, where the indication information is used to indicate that at least some OFDM symbols in the OFDM symbols that are indicated by the SFI and are available for uplink transmission are used for transmission based on non-grant.

As an example, when there are M (M is a non-negative integer) OFDM symbols available for uplink in the timeslot, the network device may further indicate that N (N ≦ M, N may be a non-negative integer) OFDM symbols of the M OFDM symbols available for uplink are available for unlicensed transmission in the configuration information for sending unlicensed transmission to the terminal device.

As another example, when one timeslot includes a plurality of mini-slots (or non-slots), the network device may notify the terminal device of the mini-slots used for the unlicensed transmission in the configuration information of the unlicensed transmission, such as a mini-slot number (also referred to as a mini-slot number, a mini-slot index number, or the like), a mini-slot combination condition, or the like.

820, the network device sends the configuration information to the terminal device.

Specifically, the network device may send the configuration information to the terminal device through semi-static signaling (such as RRC signaling, SIB, MIB, RMSI, or OSI).

The communication method provided by the embodiment of the present application is described in detail above with reference to fig. 1 to 8, and the communication device provided by the embodiment of the present application is described in detail below with reference to fig. 9 to 16.

Fig. 9 shows a schematic block diagram of a communication apparatus 900 according to an embodiment of the present application, where the apparatus 900 includes a determining unit 910 and a sending unit 920.

A determining unit 910, configured to determine a first message, the first message including slot format related information SFI, where the SFI is at least used for indicating an orthogonal frequency division multiplexing, OFDM, symbol used for uplink or downlink or unknown in a slot, and when the uplink OFDM symbol is included in the slot, the first message is further used for indicating that the uplink OFDM symbol indicated by the SFI is used for grant-based transmission or for non-grant-based transmission;

a sending unit 920, configured to send the first message to a terminal device.

Optionally, the first message further includes a first indication bit, where the first indication bit is used to indicate that the uplink OFDM symbol indicated by the SFI is used for grant-based transmission or used for non-grant-based transmission.

Optionally, the sending unit 920 is further configured to send a first indication message to the terminal device, where the first indication message is used to indicate that the terminal device detects a first radio network temporary identity RNTI used by the first message;

the sending unit 920 is specifically configured to scramble a cyclic redundancy check CRC of the first message by using the first RNTI, and send the scrambled first message to the terminal device.

Optionally, the sending unit 920 is further configured to send a second indication message to the terminal device, where the second indication message is used to indicate that the terminal device detects a second RNTI or a third RNTI used by the first message;

wherein, the sending unit 920 is specifically configured to:

Optionally, the sending unit 920 is further configured to send a third indication message to the terminal device, where the third indication message is used to indicate that the terminal device detects a first resource control set, core, or a second core used by the first message;

wherein, the sending unit 920 is specifically configured to:

Optionally, the sending unit 920 may be further configured to send, to a terminal device, indication information, where the indication information is used to indicate that at least part of OFDM symbols in the OFDM symbols available for uplink transmission and indicated by the SFI are used for non-grant-based transmission.

Optionally, the sending unit 920 is specifically configured to send the first message to the terminal device through a radio resource control, RRC, signaling; or sending the first message to the terminal equipment through a physical control message.

It should be noted that, in the embodiment of the present invention, the determining unit 910 may be implemented by a processor, and the sending unit 920 may be implemented by a transceiver. As shown in fig. 10, communications apparatus 1000 may include a processor 1010, a memory 1020, and a transceiver 1030. The memory 1020 may be used for storing codes executed by the processor 1010, and the processor 910 may be used for processing data or programs.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 1010. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1020, and the processor 1010 reads the information in the memory 1020 and performs the steps of the above method in combination with the hardware thereof. To avoid repetition, it is not described in detail here.

The communication apparatus 900 shown in fig. 9 or the communication apparatus 1000 shown in fig. 10 can implement each process of the network device corresponding to the foregoing method embodiment, specifically, the communication apparatus 900 or the communication apparatus 1000 may refer to the description above, and is not described here again to avoid repetition.

Fig. 11 shows a schematic block diagram of a communication apparatus 1100 provided in an embodiment of the present application. The apparatus 1100 comprises a receiving unit 1110 and a processing unit 1120.

A receiving unit 1110, configured to receive a first message sent by a network device, where the first message includes slot format related information SFI, where the SFI is at least used to indicate an orthogonal frequency division multiplexing, OFDM, symbol used for uplink or downlink or unknown in a slot, and when the slot includes an uplink OFDM symbol, the first message is further used to indicate that the uplink OFDM symbol indicated by the SFI is used for grant-based transmission or non-grant-based transmission;

the processing unit 1120 is configured to receive downlink data according to the first message, or send uplink data.

Optionally, the receiving unit 1110 is further configured to receive first indication information sent by the network device, where the first indication information is used to indicate that the terminal device detects a first radio network temporary identity RNTI used by the first message;

the receiving unit is specifically configured to descramble the CRC of the first message according to the first RNTI to obtain information carried by the first message.

Optionally, the receiving unit 1110 is further configured to receive a second indication message sent by the network device, where the second indication message is used to indicate that the terminal device detects a second RNTI or a third RNTI used by the first message;

wherein the receiving unit 1110 is specifically configured to:

Optionally, the receiving unit 1110 is further configured to receive a third indication message sent by the network device, where the third indication message is used to indicate that the terminal device detects a first resource control set, core, or a second core used by the first message;

wherein the receiving unit 1110 is specifically configured to:

Optionally, the receiving unit 1110 is further configured to receive indication information sent by a network device, where the indication information is used to indicate that at least a part of OFDM symbols in OFDM symbols available for uplink transmission and indicated by the SFI are used for non-grant based transmission.

It is to be noted that, in the embodiment of the present invention, the receiving unit 1110 may be implemented by a transceiver, and the processing unit 1120 may be implemented by a processor. As shown in fig. 12, the communications apparatus 1200 may include a processor 1210, a memory 1220, and a transceiver 1230. The memory 1220 may be used for storing codes and the like executed by the processor 1210, and the processor 1210 may be used for processing data or programs.

In implementation, the steps of the above method may be performed by instructions in the form of hardware, integrated logic circuits, or software in the processor 1210. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1220, and the processor 1210 reads the information in the memory 1220, and performs the steps of the above method in combination with the hardware thereof. To avoid repetition, it is not described in detail here.

The communication apparatus 1100 shown in fig. 11 or the communication apparatus 1200 shown in fig. 12 can implement each process of the terminal device corresponding to the foregoing method embodiment, specifically, the communication apparatus 1100 or the communication apparatus 1200 may refer to the description above, and is not described here again to avoid repetition.

Fig. 13 shows a schematic block diagram of a communication apparatus 1300 according to an embodiment of the present application. The apparatus 1300 includes a determining unit 1310 and a transmitting unit 1320.

The determining unit 1310 is configured to determine configuration information for unlicensed-based transmission, where the configuration information includes slot format related information SFI, where the SFI is at least used to indicate an orthogonal frequency division multiplexing OFDM symbol used for uplink or downlink or unknown in a slot.

The sending unit 1320 is configured to send the configuration information to the terminal device.

Optionally, the sending unit 1320 is specifically configured to send the configuration information to the terminal device through radio resource control RRC signaling.

It should be noted that, in the embodiment of the present invention, the determining unit 1310 may be implemented by a processor, and the transmitting unit 1320 may be implemented by a transceiver. As shown in fig. 14, the communication device 1400 may include a processor 1410, a memory 1420, and a transceiver 1430. The memory 1420 may be used to store codes and the like executed by the processor 1410, and the processor 910 may be used to process data or programs.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 1410. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1420, and the processor 1410 reads the information in the memory 1420, and performs the steps of the above-described method in conjunction with the hardware thereof. To avoid repetition, it is not described in detail here.

The communication apparatus 1300 shown in fig. 13 or the communication apparatus 1400 shown in fig. 14 can implement each process of the terminal device corresponding to the foregoing method embodiment, specifically, the communication apparatus 1300 or the communication apparatus 1400 may refer to the description above, and is not described herein again to avoid repetition.

Fig. 15 shows a schematic block diagram of a communication apparatus 1500 provided in an embodiment of the present application. The apparatus 1500 includes a receiving unit 1510 and a transmitting unit 1520.

The receiving unit 1510 is configured to receive configuration information, which is sent by a network device and used for unauthorized transmission, where the configuration information includes timeslot format related information SFI, where the SFI is at least used to indicate an orthogonal frequency division multiplexing OFDM symbol used for uplink or downlink or unknown in a timeslot;

the sending unit 1520 is configured to send uplink data to the network device according to the SFI.

Optionally, the receiving unit 1510 is specifically configured to receive the configuration information sent by the network device through a radio resource control, RRC, signaling.

It should be noted that, in the embodiment of the present invention, the receiving unit 1510 and the transmitting unit 1520 may be implemented by a transceiver. As shown in fig. 16, the communications device 1600 may include a processor 1610, a memory 1620, and a transceiver 1630. The memory 1620 may be used for storing codes and the like executed by the processor 1610, and the processor 1610 may be used for processing data or programs.

In implementation, the steps of the above method may be performed by instructions in the form of hardware, integrated logic circuits or software in the processor 1610. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory 1620, and the processor 1610 reads the information in the memory 1620 and performs the steps of the above method in combination with hardware thereof. To avoid repetition, it is not described in detail here.

The communication apparatus 1500 shown in fig. 15 or the communication apparatus 1600 shown in fig. 16 can implement each process of the terminal device corresponding to the foregoing method embodiment, specifically, the communication apparatus 1500 or the communication apparatus 1600 may refer to the description above, and is not described here again to avoid repetition.

The embodiment of the present application further provides a computer-readable medium for storing a computer program, where the computer program includes instructions for executing the method corresponding to the terminal device or the network device in the foregoing method embodiments.

An embodiment of the present application further provides a computer program product, where the computer program product includes: computer program code which, when run by a communication unit, processing unit or transceiver, processor of a communication device (e.g. a terminal device or a network device), causes the communication device to perform a method corresponding to the terminal device or the network device of any of the above-described method embodiments.

The embodiment of the present application further provides a communication chip, where instructions are stored, and when the communication chip runs on a communication device, the communication chip is enabled to execute a method corresponding to the terminal device or the network device in the foregoing method embodiments.

The embodiments in the present application may be used independently or jointly, and are not limited herein.

It should be understood that the descriptions of the first, second, etc. appearing in the embodiments of the present application are only for illustrating and differentiating the objects, and do not represent a particular limitation to the number of devices in the embodiments of the present application, and do not constitute any limitation to the embodiments of the present application.

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

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

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

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

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

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

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) 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: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

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

Claims

1. A method of communication, comprising:

the network equipment sends a second indication message to the terminal equipment, wherein the second indication message is used for indicating the terminal equipment to detect a second RNTI or a third RNTI used by the first message; alternatively, the first and second electrodes may be,

the network equipment determines the first message, wherein the first message comprises time slot format related information (SFI), the SFI is used for indicating an Orthogonal Frequency Division Multiplexing (OFDM) symbol used for uplink or downlink or unknown in a time slot, and when the uplink OFDM symbol is included in the time slot, the first message is also used for indicating that the uplink OFDM symbol indicated by the SFI is used for grant-based transmission or non-grant-based transmission;

wherein the second indication message or the third indication message is determined according to whether the uplink OFDM symbol indicated by the SFI is used for grant-based transmission or non-grant-based transmission;

and the network equipment sends the first message to terminal equipment.

2. The method of claim 1, wherein the first message further comprises a first indicator bit indicating whether the uplink OFDM symbol indicated by the SFI is for grant-based transmission or for non-grant-based transmission.

3. The method of claim 2, wherein before the network device determines the first message, further comprising:

4. The method of claim 1, wherein the network device sends the first message to a terminal device, and wherein the sending comprises:

5. The method of claim 1, wherein the network device sends the first message to a terminal device, and wherein the sending comprises:

6. The method of any one of claims 1-5, further comprising:

the network equipment sends indication information to the terminal equipment, wherein the indication information is used for indicating that at least part of OFDM symbols in the OFDM symbols which are indicated by the SFI and can be used for uplink transmission are used for transmission based on non-authorization.

7. The method of any of claims 1-5, wherein the network device sending the first message to a terminal device comprises:

8. A method of communication, comprising:

the terminal equipment receives a second indication message sent by the network equipment, wherein the second indication message is used for indicating the terminal equipment to detect a second RNTI or a third RNTI used by the first message; alternatively, the first and second electrodes may be,

the terminal device receives the first message sent by the network device, wherein the first message comprises time slot format related information (SFI), the SFI is used for indicating an Orthogonal Frequency Division Multiplexing (OFDM) symbol used for uplink or downlink or unknown in a time slot, and when the uplink OFDM symbol is included in the time slot, the first message is also used for indicating that the uplink OFDM symbol indicated by the SFI is used for grant-based transmission or non-grant-based transmission;

determining whether the first message indicates that the uplink OFDM indicated by the SFI is based on authorized transmission or non-authorized transmission according to the second indication information or the second indication information;

and the terminal equipment receives downlink data or sends uplink data according to the first message.

9. The method of claim 8, wherein the first message further comprises a first indicator bit indicating whether the uplink OFDM symbol indicated by the SFI is for grant-based transmission or for non-grant-based transmission.

10. The method of claim 9, wherein before the terminal device receives the first message sent by the network device, the method further comprises:

11. The method of claim 8, wherein the receiving, by the terminal device, the first message sent by the network device comprises:

12. The method of claim 8, wherein the receiving, by the terminal device, the first message sent by the network device comprises:

13. The method according to any one of claims 8-12, further comprising:

the terminal device receives indication information sent by the network device, wherein the indication information is used for indicating that at least part of OFDM symbols in the OFDM symbols which are indicated by the SFI and can be used for uplink transmission are used for transmission based on non-authorization.

14. A communications apparatus, comprising:

a sending unit, configured to send a second indication message to a terminal device, where the second indication message is used to indicate a second RNTI or a third RNTI used by the terminal device to detect the first message; alternatively, the first and second electrodes may be,

the sending unit is further configured to send a third indication message to the terminal device, where the third indication message is used to indicate that the terminal device detects a first resource control set, core, or a second core, used by the first message;

a determining unit, configured to determine the first message, where the first message includes slot format related information (SFI), where the SFI is used to indicate an Orthogonal Frequency Division Multiplexing (OFDM) symbol used for uplink or downlink or unknown in a slot, and when the uplink OFDM symbol is included in the slot, the first message is further used to indicate that the uplink OFDM symbol indicated by the SFI is used for grant-based transmission or for non-grant-based transmission;

the sending unit is further configured to send the first message to a terminal device.

15. The apparatus of claim 14, wherein the first message further comprises a first indicator bit indicating whether the uplink OFDM symbol indicated by the SFI is for grant-based transmission or for non-grant-based transmission.

16. The apparatus according to claim 15, wherein the sending unit is further configured to send a first indication message to the terminal device, where the first indication message is used to indicate a first radio network temporary identity RNTI used by the terminal device to detect the first message;

the sending unit is specifically configured to scramble a cyclic redundancy check CRC of the first message using the first RNTI, and send the scrambled first message to the terminal device.

17. The apparatus according to claim 14, wherein the sending unit is specifically configured to:

if the first message is used for indicating that the uplink OFDM symbol indicated by the SFI is used for transmission based on authorization, the network equipment scrambles the CRC of the first message by using the second RNTI and sends the scrambled first message to the terminal equipment;

18. The apparatus according to claim 14, wherein the sending unit is specifically configured to:

19. The apparatus of any of claims 14-18, wherein the transmitting unit is further configured to transmit indication information to the terminal device, and wherein the indication information indicates that at least some OFDM symbols of OFDM symbols available for uplink transmission indicated by the SFI are used for non-grant based transmission.

20. The apparatus according to any of claims 14-18, wherein the sending unit is specifically configured to send the first message to the terminal device via radio resource control, RRC, signaling; or sending the first message to the terminal equipment through a physical control message.

21. A communications apparatus, comprising:

a receiving unit, configured to receive a second indication message sent by a network device, where the second indication message is used to indicate a terminal device to detect a second RNTI or a third RNTI used by a first message; alternatively, the first and second electrodes may be,

the receiving unit is further configured to receive a third indication message sent by the network device, where the third indication message is used to indicate the terminal device to detect a first resource control set, core, or a second core, used by the first message;

the receiving unit is further configured to receive the first message sent by a network device, where the first message includes slot format related information SFI, where the SFI is used to indicate an orthogonal frequency division multiplexing OFDM symbol used for uplink or downlink or unknown in a slot, and when the slot includes an uplink OFDM symbol, the first message is further used to indicate that the uplink OFDM symbol indicated by the SFI is used for grant-based transmission or non-grant-based transmission;

the receiving unit is further configured to determine, according to the second indication information or second indication information, whether the first message indicates that the uplink OFDM indicated by the SFI is based on authorized transmission or unlicensed transmission;

and the processing unit is used for receiving downlink data or sending uplink data according to the first message.

22. The apparatus of claim 21, wherein the first message further comprises a first indicator bit indicating whether the uplink OFDM symbol indicated by the SFI is for grant-based transmission or for non-grant-based transmission.

23. The apparatus according to claim 22, wherein the receiving unit is further configured to receive first indication information sent by the network device, where the first indication information is used to indicate a first radio network temporary identity RNTI used by the terminal device to detect the first message;

24. The apparatus according to claim 21, wherein the receiving unit is specifically configured to:

25. The apparatus according to claim 21, wherein the receiving unit is specifically configured to:

26. The apparatus of any of claims 21-25, wherein the receiving unit is further configured to receive indication information sent by the network device, and the indication information is used to indicate that at least a part of OFDM symbols available for uplink transmission indicated by the SFI are used for non-grant based transmission.