CN116782413A - Data transmission method and device, storage medium, terminal equipment and network equipment - Google Patents

Abstract

A data transmission method and device, a storage medium, a terminal device and a network device, the data transmission method comprises the following steps: receiving a random access response, the random access response including at least one scheduling information; when the random access response comprises two or more scheduling information, sending data at the indicated resource position according to the corresponding scheduling information, wherein different scheduling information corresponds to different terminals; or when the random access response comprises scheduling information, if the random access response comprises first scheduling information and data cannot be transmitted at a resource position indicated by the first scheduling information, starting a first timer, and monitoring a downlink control channel during the operation of the first timer. The technical scheme of the invention can give consideration to the access efficiency of the common processing capacity terminal and the terminal with the relaxed processing capacity.

Description

Data transmission method and device, storage medium, terminal equipment and network equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a data transmission method and apparatus, a storage medium, a terminal device, and a network device.

Background

Fifth generation mobile communication (5) ^th generation communication system) defines three major application scenarios, including enhanced mobile broadband (enhanced mobile broadband, emmbb), ultra-high reliability ultra-low latency communications (ultra-reliable and low latency communication, URLLC), and mass machine type communications (massive machine type communications, mctc). The three application scenes form a 5G application prospect graph, and each application scene has respective characteristics and use requirements. In addition to the above scenario, researchers find that the actual application includes some new services and new terminal types that do not belong to these three application scenarios, they have certain requirements but far less than the transmission rate requirements of the eMBB, they have lower latency requirements than the URLLC but possibly higher than the eMBB, and they have service properties of machine type communication. A new terminal type is defined for this new service (new scenario), which is called reduced capability (Reduced Capability, redCap) terminal, or relaxed processing capability terminal.

From the standard set by the third generation partnership project (3rd Generation Partnership Project,3GPP) release 17 (rel.17), the reduced capability terminals mainly consider the video monitoring, industrial sensors and wearable devices, which are several big application scenarios. Terminals in such a scenario do not require high complexity, the number of transmit/receive antennas is reduced to 1, the maximum bandwidth supported by the terminals is reduced to 20Mhz, the terminals optionally support half-duplex frequency division multiplexing (HD-FDD), and the downlink transmission does not require mandatory support of 256QAM. Once rel.17 has established a basic RedCap, rel.18 will consider some of the evolution directions of RedCap, including further complexity and cost reduction and further energy consumption reduction. Schemes to reduce complexity and cost include bandwidth reduction and processing time reduction.

From the scheduling point of view, the message 3 (Msg 3) of the initial access procedure is special, the Msg3 is not directly scheduled through a physical downlink control channel (Physical Downlink Control Channel, PDCCH), but a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) is firstly scheduled through the PDCCH, the PDSCH contains a random access response (Random Access Response, RAR), and the RAR includes an uplink grant (UL grant), and the uplink grant indicates scheduling information of the Msg3. The minimum time interval between RAR and Msg3 is N1+N2+0.5ms, N1 represents the symbol distance between PDSCH and uplink feedback, and N2 represents the symbol distance between PDCCH and uplink transmission. As particularly shown in fig. 1. If there are two terminals in the cell, there are two timelines when Msg3 is scheduled, as shown in fig. 2: the minimum time interval between the terminals relaxing the processing capability from RAR to Msg3 is 2n1+2n2+0.5ms.

However, before the initial access, the base station does not know the processing capability of the terminal, and if the base station schedules Msg3 according to the normal processing capability, the terminal needs to transmit Msg3 in slot a (slot a). If a terminal that looses processing power is scheduled, that terminal cannot send Msg3 at SlotA. Thus, terminals with relaxed processing capabilities cannot access the base station. If the base station schedules Msg3 according to the relaxed capability, then the terminal needs to send Msg3 at SlotB. If a terminal with ordinary processing capability is scheduled, the terminal also needs to send Msg3 at SlotB, so that the access delay of the terminal with ordinary processing capability increases, resulting in a decrease in access efficiency.

Disclosure of Invention

The invention solves the technical problem of how to consider the access efficiency of the common processing capacity terminal and the access efficiency of the relaxation processing capacity terminal.

In order to solve the above technical problems, in a first aspect, an embodiment of the present invention provides a data transmission method, where the data transmission method includes: receiving a random access response, the random access response including at least one scheduling information; when the random access response comprises two or more scheduling information, sending data at the indicated resource position according to the corresponding scheduling information, wherein different scheduling information corresponds to different terminals; or when the random access response comprises scheduling information, if the random access response comprises first scheduling information and data cannot be transmitted at a resource position indicated by the first scheduling information, starting a first timer, and monitoring a downlink control channel during the operation of the first timer.

Optionally, the different terminals are terminals with different types or different capabilities, including normal processing capabilities and relaxed processing capabilities.

Optionally, when the random access response includes two or more kinds of scheduling information, part of the two or more kinds of scheduling information corresponds to the normal processing capability, and another part of the two or more kinds of scheduling information corresponds to the relaxed processing capability.

Optionally, the resource location indicated by the different scheduling information is different from the time interval between the reception instants of the random access response.

Optionally, the monitoring the downlink control channel during the operation of the first timer includes: and monitoring a downlink control channel during the operation of the first timer, and sending data at a resource position indicated by new scheduling information contained in the downlink control channel.

Optionally, the starting the first timer includes: starting the first timer at a first transmission time interval after an end position of the resource position indicated by the first scheduling information; or starting the first timer at the earliest data transmission resource position supported by the terminal with relaxed processing capacity, wherein the earliest data transmission resource position is determined according to the relaxed processing capacity. Or starting the first timer at an nth transmission time interval after the end position of the resource position indicated by the first scheduling information, wherein N is a positive integer greater than 1.

Optionally, a time interval between the earliest resource location of data transmission supported by the terminal with relaxed processing capability and the receiving time of the random access response is: 2n1+2n2+0.5 milliseconds, where N1 represents the processing time of the PDSCH and N2 represents the preparation time of the PUSCH.

Optionally, the random access response includes first indication information, where the first indication information is used to indicate that the random access response includes one kind of scheduling information or the random access response includes two or more kinds of scheduling information.

Optionally, when the random access response includes two or more scheduling information, the random access response includes multiple types of uplink grants, and different types of uplink grants correspond to different scheduling information.

Optionally, when the random access response includes two or more scheduling information, the random access response includes an uplink grant, the TDRA domain of the uplink grant corresponds to multiple TDRA tables, different TDRA tables correspond to the same or different scheduling information, scheduling delays corresponding to the same index in different TDRA tables are the same or different, and the scheduling delays are used to indicate time domain positions of data transmission.

Optionally, the plurality of TDRA tables includes a first TDRA table and a second TDRA table.

Optionally, when the random access response includes two or more scheduling information, the random access response includes an uplink grant, a TDRA domain of the uplink grant corresponds to a TDRA table, the TDRA table has multiple groups of scheduling delays, values of the multiple groups of scheduling delays corresponding to the same index are different, the scheduling delays of different groups correspond to different scheduling information, and the scheduling delays are used for indicating time domain positions of data transmission.

In a second aspect, the embodiment of the invention also discloses a data transmission method, which includes: transmitting a random access response, the random access response including at least one scheduling information; and receiving data, wherein the data is transmitted at the indicated resource position according to the corresponding scheduling information when the random access response comprises two or more scheduling information, and different scheduling information corresponds to different terminals, or the data is transmitted after starting a first timer when the random access response comprises first scheduling information and the resource position indicated by the first scheduling information cannot transmit data, and monitoring a downlink control channel during the operation of the first timer.

In a third aspect, the embodiment of the present invention further discloses a data transmission device, where the data transmission device includes: a communication module for receiving a random access response, the random access response comprising at least one scheduling information; when the random access response comprises two or more scheduling information, the communication module sends data at the indicated resource position according to the corresponding scheduling information, and different scheduling information corresponds to different terminals; or the processing module is used for starting a first timer when the random access response comprises first scheduling information and the resource position indicated by the first scheduling information cannot send data, and monitoring a downlink control channel during the operation of the first timer.

In a fourth aspect, the embodiment of the present invention further discloses a data transmission device, where the data transmission device includes: a communication module configured to transmit a random access response, where the random access response includes at least one scheduling information; the communication module is further configured to receive data, where the data is sent at an indicated resource location according to corresponding scheduling information when the random access response includes two or more scheduling information, and different scheduling information corresponds to different terminals, or the data is sent after a first timer is started when the random access response includes first scheduling information and the resource location indicated by the first scheduling information fails to send data, and the downlink control channel is monitored during operation of the first timer.

In a fifth aspect, the embodiment of the present invention further discloses a data transmission method, where the data transmission method includes: transmitting a message 1, wherein the message 1 comprises types of processing capacity, the types of different processing capacity correspond to different scheduling information, and the time interval between the resource position indicated by the different scheduling information and the receiving moment of the random access response is different; receiving a random access response, wherein the random access response comprises scheduling information corresponding to the type of the current processing capacity; and sending a message 3 at the resource position indicated by the scheduling information.

Optionally, the types of processing capabilities include normal processing capabilities and relaxed processing capabilities.

Optionally, in the message 1, the type of different processing capabilities is indicated with different PRACH resources or different preamble sequences.

In a sixth aspect, the embodiment of the present invention further discloses a data transmission method, where the data transmission method includes: receiving a message 1, wherein the message 1 comprises types of processing capacity, the types of different processing capacity correspond to different scheduling information, and the time interval between the resource position indicated by the different scheduling information and the receiving moment of the random access response is different; transmitting a random access response, wherein the random access response comprises scheduling information corresponding to the type of the current processing capacity; and receiving a message 3 at a resource position indicated by the scheduling information.

In a seventh aspect, the embodiment of the present invention further discloses a data transmission device, where the data transmission device includes: a communication module, configured to send a message 1, where the message 1 includes a type of processing capability, the type of different processing capability corresponds to different scheduling information, and a time interval between a resource location indicated by the different scheduling information and a receiving time of the random access response is different; the communication module is further configured to receive a random access response, where the random access response includes scheduling information corresponding to a type of a current processing capability; the communication module is further configured to send a message 3 at a resource location indicated by the scheduling information.

In an eighth aspect, the embodiment of the present invention further discloses a data transmission device, where the data transmission device includes: a communication module, configured to receive a message 1, where the message 1 includes a type of processing capability, the type of different processing capability corresponds to different scheduling information, and a time interval between a resource location indicated by the different scheduling information and a receiving time of the random access response is different; the communication module is further used for sending a random access response, wherein the random access response comprises scheduling information corresponding to the type of the current processing capacity; the communication module is further configured to receive a message 3 at a resource location indicated by the scheduling information.

In a ninth aspect, the embodiments of the present invention also disclose a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of the data transmission method.

In a tenth aspect, the embodiment of the present invention further discloses a terminal device, including a memory and a processor, where the memory stores a computer program that can be run on the processor, and the processor executes the steps of the data transmission method when running the computer program.

In an eleventh aspect, the embodiment of the present invention further discloses a network device, including a memory and a processor, where the memory stores a computer program that can be executed on the processor, and the processor executes the steps of the data transmission method when executing the computer program.

Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:

in the technical scheme of the invention, the random access response comprises two or more scheduling information, different scheduling information corresponds to different terminals, and different scheduling information indicates different positions, so that the data can be sent by different terminals at the corresponding positions, and the access efficiency of the terminals with different capacities is ensured; or the random access response comprises first scheduling information, if the resource position indicated by the first scheduling information cannot send data, the first timer is started, and the downlink control channel is monitored during the operation period of the first timer so as to retransmit the data, thereby ensuring the access efficiency of the terminal.

Drawings

FIG. 1 is a schematic diagram of various parameters of the prior art;

fig. 2 is a schematic diagram of a terminal schedule Msg3 of different capabilities in the prior art;

Fig. 3 is a flowchart of a data transmission method according to an embodiment of the present application;

fig. 4 is a flowchart of a data transmission interaction method provided in an embodiment of the present application;

fig. 5 is a flowchart of another data transmission interaction method provided in an embodiment of the present application;

fig. 6 is a schematic diagram of a specific application scenario provided in an embodiment of the present application;

fig. 7 is a flowchart of another data transmission method according to an embodiment of the present application;

fig. 8 is a flowchart of yet another data transmission interaction method provided in an embodiment of the present application;

fig. 9 is a schematic structural diagram of a data transmission device according to an embodiment of the present application;

fig. 10 is a schematic diagram of a hardware structure of a communication device according to an embodiment of the present application

Detailed Description

Communication systems to which embodiments of the present application are applicable include, but are not limited to, long term evolution (long term evolution, LTE) systems, fifth generation (5G) systems, NR systems, and future evolution systems or multiple communication convergence systems. The 5G system may be a non-independent Networking (NSA) 5G system or an independent networking (SA) 5G system. The technical scheme of the application is also suitable for different network architectures, including but not limited to a relay network architecture, a dual link architecture, a Vehicle-to-evaluation architecture and the like.

The present application relates generally to communication between a terminal device and a network device. Wherein:

the network device in the embodiment of the present application may also be referred to as an access network device, for example, may be a core network or a Base Station (BS) (also referred to as a base station device), where the network device is a device deployed in a radio access network (Radio Access Network, RAN) to provide a wireless communication function. For example, the device for providing base station functionality in the second generation (2 nd-generation, 2G) network comprises a base radio transceiver station (base transceiver station, BTS), the device for providing base station functionality in the third generation (3 rd-generation, 3G) network comprises a node B (NodeB), the device for providing base station functionality in the fourth generation (4 th-generation, 4G) network comprises an evolved node B (eNB), the device for providing base station functionality in the wireless local area network (wireless local area networks, WLAN) is an Access Point (AP), the next generation base station node (next generation node base station, gNB) in the NR is an Access Point (AP), and the node B (ng-eNB) continues to evolve, wherein the communication between the gNB and the terminal device is performed using NR technology, and the communication between the ng-eNB and the terminal device is performed using evolved universal terrestrial radio access (Evolved Universal Terrestrial Radio Access, E-UTRA) technology, both the gNB and the ng-eNB may be connected to the 5G core network. The network device in the embodiment of the present application further includes a device for providing a base station function in a new communication system in the future, and the like.

The terminal device (terminal equipment) in embodiments of the present application may refer to various forms of access terminals, subscriber units, subscriber stations, mobile Stations (MSs), remote stations, remote terminals, mobile devices, user terminals, wireless communication devices, user agents, or user equipment. The terminal device may also be a cellular telephone, a cordless telephone, 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 capabilities, 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 (Public Land Mobile Network, PLMN), etc., as embodiments of the present application are not limited in this regard. The terminal device may also be referred to as a User Equipment (UE), a terminal, etc.

For the processing capability of the terminal device, a New Radio (NR) defines a processing time N1 for a physical downlink shared channel (physical downlink share channel, PDSCH) and a preparation time N2 for a physical uplink shared channel (physical uplink share channel, PUSCH).

For processing time N1, it represents the symbol distance between PDSCH to uplink feedback. Since the terminal device needs to decode PDSCH first and then generate feedback information (HARQ-ACK) according to the decoding result, the network device (e.g., base station) needs to know this processing time N1 to determine the time position of scheduling feedback (HARQ-ACK). For the processing time N1, two capabilities, capability 1 (Capability 1), which is a default Capability, are currently corresponded. The other is that a higher capability is required, capability 2, which is an alternative capability.

For the preparation time N2, it represents the symbol distance between PDCCH and uplink transmission. Since the terminal needs to decode the PDCCH first and then generate uplink data according to the decoding result, the base station needs to know the processing time to determine the time position of scheduling the uplink data.

For the preparation time N2, two capabilities are currently corresponding, one being capability 1, which is a default capability. The other is that a higher capability is required, capability 2, which is an alternative capability.

It is possible that a terminal device with relaxation handling capabilities will relax on the basis of capability 1. The preliminary consideration is currently 2-fold relaxation. I.e., the decoding time N1 of PDSCH and the preparation time N2 of PUSCH are relaxed by 2 times. The processing time N1 and the preparation time N2, after being relaxed 2 times on the basis of capability 1 (N1 and N2 are doubled), affect the scheduling of the initial access Msg 3.

As described in the background, before the initial access, the base station does not know the processing capability of the terminal, and if the base station schedules Msg3 according to the normal processing capability, the terminal needs to transmit Msg3 in time slot a (SlotA). If a terminal that looses processing power is scheduled, that terminal cannot send Msg3 at SlotA. Thus, terminals with relaxed processing capabilities cannot access the base station. If the base station schedules Msg3 according to the relaxed capability, then the terminal needs to send Msg3 at SlotB. If a terminal with ordinary processing capability is scheduled, the terminal also needs to send Msg3 at Slot B, so that the access delay of the terminal with ordinary processing capability increases, resulting in a decrease in access efficiency.

The four-step initial random access procedure is approximately as follows:

the first step: the terminal device transmits a random access preamble (Random Access Preamble) (Msg 1) to the base station;

and a second step of: the base station transmits a random access response (Msg 2) to the terminal device; upon receipt of the preamble, the base station applies for temporary cell radio network temporary identity (Temporary Cell Radio Network Temporary Identity, TC-RNTI), uplink and downlink scheduling resources. Then, the base station transmits a random access response through the PDSCH. The random access response contains a random access preamble identifier, time adjustment information, an initial uplink schedule, and a TC-RNTI. One PDSCH may carry a random access response to multiple terminal devices. After the terminal device transmits the preamble, the terminal device monitors the PDCCH and waits for a random access response within a random access response window.

If the terminal device receives a response of the random access preamble identifier, which is identical to the identifier containing the transmitted random access preamble, the response is successful. The terminal device then transmits the uplink scheduling information.

If the terminal device does not receive the response within the random access response window or fails to verify the response, the response fails. In this case, if the number of random access attempts is less than the upper limit (10), the terminal device retries random access. Otherwise, the random access fails.

And a third step of: uplink transmission (Msg 3) is scheduled. The terminal device transmits uplink scheduling information through a physical uplink shared channel (Physical Uplink Shared Channel, PUSCH).

Fourth step: contention resolution (Msg 4). After the terminal device transmits Msg3, a 4ms contention resolution timer starts. The base station uses the C-RNTI on the PDCCH or the active device contention resolution identity on the PDSCH to assist the terminal device in contention resolution.

In the technical scheme of the invention, the random access response comprises two or more scheduling information, different scheduling information corresponds to different terminals, and different scheduling information indicates different positions, so that the data can be sent by different terminals at the corresponding positions, and the access efficiency of the terminals with different capacities is ensured; or the random access response comprises first scheduling information, if the resource position indicated by the first scheduling information cannot send data, the first timer is started, and the downlink control channel is monitored during the operation period of the first timer so as to retransmit the data, thereby ensuring the access efficiency of the terminal.

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

Fig. 3 is a flowchart of a data transmission method according to an embodiment of the present invention.

The data transmission method may be used on the terminal device side, i.e. the steps of the method may be performed by the terminal device.

Specifically, the data transmission method may include the steps of:

step 301: receiving a random access response, the random access response including at least one scheduling information;

step 302: when the random access response comprises two or more scheduling information, data is sent at the indicated resource position according to the corresponding scheduling information, and different scheduling information corresponds to different terminals.

Alternatively, the data transmission method may include steps 101 and 103, in step 103, when the random access response includes one kind of scheduling information, if the random access response includes first scheduling information and data cannot be transmitted at a resource location indicated by the first scheduling information, a first timer is started, and a downlink control channel is monitored during operation of the first timer.

It should be noted that the serial numbers of the steps in the present embodiment do not represent a limitation on the execution sequence of the steps.

It will be appreciated that in a specific implementation, the data transmission method may be implemented in a software program running on a processor integrated within a chip or a chip module. The method may also be implemented by combining software with hardware, and the application is not limited.

In this embodiment, the scheduling information is used to indicate scheduling information of data, and may specifically indicate a transmission position of the data, for example, a time-frequency resource position. Specifically, the scheduling information may be UpLink grant (ULgrant); the scheduling information indicates the transmission position of the message 3. The data transmission in the embodiment of the application refers to the transmission of the message 3.

In a specific embodiment, the scheduling information may indicate a time interval between a reception time of the random access response and a resource location of the transmission data.

Further, the resource locations indicated by the different scheduling information are different from the time interval between the reception instants of the random access response.

In one non-limiting embodiment, referring also to fig. 4, fig. 4 shows an interaction flow for random access between a terminal device and a network device.

In step 401, the terminal device sends message 1 to the network device. Message 1 includes a preamble.

In step 402, the network device sends a message 2 (i.e. a random access response) to the terminal device. The random access response includes two or more kinds of scheduling information, and different scheduling information corresponds to different terminals. The different terminals are terminals with different types or different capabilities including normal processing capabilities and relaxed processing capabilities.

In step 403, the terminal device sends a message 3 to the network device. Specifically, the terminal device selects scheduling information corresponding to its own capability according to its own capability. For example, the random access response includes two kinds of scheduling information, wherein the first kind of scheduling information corresponds to a terminal with normal processing capability, and the second kind of scheduling information corresponds to a terminal with relaxed processing capability; then, if the terminal equipment belongs to the terminal with common processing capability, selecting first scheduling information and sending a message 3; and if the terminal equipment belongs to the terminal with relaxed processing capability, selecting the second scheduling information and sending the message 3.

In step 404, the network device sends message 4 to the terminal device.

In one non-limiting embodiment, referring also to fig. 5, fig. 5 shows an interaction flow for random access between a terminal device and a network device.

In step 501, the terminal device sends message 1 to the network device. Message 1 includes a preamble.

In step 502, the network device sends a message 2 (i.e. a random access response) to the terminal device. The random access response includes the first scheduling information. The first scheduling information indicates the resource location of the transmitted message 3. The first scheduling information corresponds to a terminal of ordinary processing capability.

The terminal device does not successfully send Msg3 at the resource location indicated by the first scheduling information, and then step 503 is executed. In step 503, the terminal device listens to the PDCCH. Specifically, the terminal device starts a first timer and listens to the PDCCH during operation of the first timer. For the network device, msg3 is not received at the resource location indicated by the first scheduling information, it should be appreciated that the terminal device is a terminal with relaxed processing capability, and further, a larger scheduling delay is configured in the PDCCH during retransmission, so as to ensure that Msg3 can be sent by the terminal device.

In step 504, the terminal device sends message 3 to the network device. Specifically, the terminal device acquires the PDSCH scheduled by the PDCCH by starting the first timer and monitoring the PDCCH (including downlink control information (Downlink Control Information, DCI)) during the operation of the first timer, where the PDSCH includes new scheduling information (i.e., new uplink grant) indicating the resource location where the Msg3 is transmitted, and retransmits the message 3 at the resource location. The new schedule information is schedule information different from the first schedule information.

In a specific embodiment, the time interval between the resource location indicated by the new scheduling information and the time when the PDCCH is monitored is greater than the time interval between the resource location indicated by the first scheduling information and the time of receipt of the random access response.

Specifically, the terminal device starting the first timer includes: the first timer starts at a first symbol after the symbol end position of Msg3 indicated by the first scheduling information, or starts at an xth symbol after the symbol end position of Msg3 indicated by the first scheduling information, where X may be agreed by a protocol or configured by a network device broadcast. Alternatively, the terminal device starting the first timer includes: starting a first timer at a resource location of an earliest data transmission supported by the relaxed processing capability terminal, the resource location of the earliest data transmission being determined according to the relaxed processing capability, e.g. 2n1+2n2+0.5ms location from the reception moment of the random access response.

In step 505, the network device sends a message 4 to the terminal device.

In a specific application scenario, referring to fig. 6 together, the resource location indicated by the first scheduling information is slot a (slot a). For a terminal device that looses processing capability, if the random access response is successfully decoded at time a, but it is found that time slot a indicated by the first scheduling information in the random access response is before time a, the terminal device fails to transmit Msg3 at time slot a. The terminal device starts a first timer. The first timer may specifically be a contention resolution timer ra-Contention ResolutionTimer. The terminal device listens to the PDCCH during timer running to receive Msg4 or to make retransmission of Msg3.

Unlike the prior art that the terminal device re-initiates the random access channel (Random Access Channel, RACH) on the next PRACH resource if the terminal device does not send the Msg3 and considers that the random access response is not received or the random access response is not successfully decoded, in the embodiment of the present invention, the decoding success random access response may not send the Msg3, and the terminal device does not re-send the RACH at this time, but waits for retransmission. If the network device does not receive Msg3 at the location where Msg3 is scheduled, it should be appreciated that the terminal is a terminal with relaxed processing power, and thus selects a larger scheduling delay at the time of retransmission. As shown in fig. 6, the network device schedules Msg3 in a slot B (slot B) to ensure that the terminal device can successfully transmit Msg3 in the slot, thereby ensuring that the terminal device can successfully complete random access.

In one non-limiting embodiment, the random access response comprises first indication information for indicating that the random access response comprises one kind of scheduling information or that the random access response comprises two or more kinds of scheduling information. Specifically, the first indication information may be carried in a first bit of the random access response; alternatively, the first indication information may be carried in the broadcast system information.

In one non-limiting embodiment, when the random access response includes two or more kinds of scheduling information, the random access response includes multiple types of uplink grants, and the different types of uplink grants correspond to different scheduling information.

As shown in table 1, table 1 shows two types of upstream grants. The UL grant1 is used for a terminal device with normal processing capability, and the UL grant2 is used for a terminal device with relaxed processing capability. The network side may configure terminal devices corresponding to the two types of uplink grants, for example, a terminal device with a broadcast information indicating that UL grant1 is used for a terminal device with a common processing capability, UL grant2 is used for a terminal device with a relaxed processing capability, or UL grant2 is used for a terminal device with a common processing capability, and UL grant1 is used for a terminal device with a relaxed processing capability. In addition, UL grant1 may be defined directly by the protocol for a terminal device with normal processing capability, and UL grant2 may be defined for a terminal device with relaxed processing capability. Or by reserving (Reserved) bits, such as indicating that UL grant1 is used for a terminal device with normal processing capability and UL grant2 is used for a terminal device with relaxed processing capability. Or the UE decodes the two uplink grants at the same time, and automatically selects the uplink grant which accords with the processing capacity (selects the uplink grant of which the scheduling time delay in the UL grant meets the processing time delay of the UE).

TABLE 1

In another non-limiting embodiment, when the random access response includes two or more kinds of scheduling information, the random access response includes an uplink grant, a time domain resource allocation (Time Domain Resource Allocation, TDRA) domain of the uplink grant corresponds to a plurality of TDRA tables, different TDRA tables correspond to the same or different scheduling information, scheduling delays corresponding to the same index in the different TDRA tables are the same or different, and the scheduling delays are used to indicate time domain positions of data transmission.

As shown in tables 2 and 3, tables 2 and 3 show two TDRA tables. Wherein the TDRA table shown in table 2 (first TDRA table) is used for a terminal device of normal processing capability and the TDRA table shown in table 3 (first TDRA table) is used for a terminal device of relaxed processing capability. The two TDRA tables use the same TDRA domain index, in which the same index points to resources of different time domains. Specifically, the same index points to a different parameter K2, the parameter K2 being used to calculate the time domain resource.

The specific implementation of the parameter K2 may refer to the existing communication standard protocol, and the embodiments of the present invention are not described herein in detail; in addition, other contents, such as Mapping type (Mapping type), start symbol and symbol length indication SLIV, etc., may be further included in the TDRA table, which is not limited in the embodiment of the present invention.

TABLE 2

Index (index)	K2
		0	0
1	1
		2	2
…	…
		15	32

TABLE 3 Table 3

In another non-limiting embodiment, when the random access response includes two or more scheduling information, the random access response includes an uplink grant, the TDRA field of the uplink grant corresponds to a TDRA table, the TDRA table has multiple sets of scheduling delays, the values of the multiple sets of scheduling delays corresponding to the same index are different, the scheduling delays of different sets correspond to different scheduling information, and the scheduling delays are used to indicate time domain positions of data transmission.

As shown in table 4, table 4 shows a TDRA table. There are two sets of scheduling delays in the TDRA table, which are represented by parameter K2. That is, the TDRA table has two columns of K2 parameters, and terminals with different processing capabilities correspond to different columns of K2. Specifically, the second column K2 is for terminal devices of normal processing capacity, and the third column K2 is for terminal devices of relaxed processing capacity.

TABLE 4 Table 4

Index (index)	K2	K2
			0	0	0
1	1	2
			2	2	3
…	…	…
			15	32	32

Specifically, the K2 configured for the terminal device with relaxed processing capability is located in a new table containing only K2 parameter values, other contents in the TDRA table (e.g., mapping type and SLIV use the contents of the original TDRA table).

The embodiment of the invention can ensure that the terminal with relaxed processing capability has the opportunity to access the cell under the condition of not influencing the initial access flow of the existing terminal through the change of terminal behaviors or scheduling configuration.

Referring to fig. 7, the data transmission method shown in fig. 7 may include the following steps:

step 701: transmitting a message 1, wherein the message 1 comprises types of processing capacity, the types of different processing capacity correspond to different scheduling information, and the time interval between the resource position indicated by the different scheduling information and the receiving moment of the random access response is different;

step 702: receiving a random access response, wherein the random access response comprises scheduling information corresponding to the type of the current processing capacity;

step 703: and sending a message 3 at the resource position indicated by the scheduling information.

In this embodiment, the terminal device may report its own capability through the message 1, so that the network device configures corresponding scheduling information for the terminal device, so as to ensure that the terminal device can successfully complete random access.

In a specific implementation, in the message 1, different types of processing capabilities are indicated using different PRACH resources or different preamble sequences.

Referring also to fig. 8, fig. 8 shows an interaction flow between a terminal device and a network device.

In step 801, the terminal device sends message 1 to the network device. Message 1 includes the type of processing capability. After receiving the message 1, the network device can configure corresponding scheduling information for the terminal device according to the capability of the terminal device. For example, the scheduling delay in the scheduling information of the terminal device that looses the processing capability is larger than the scheduling delay in the scheduling information of the terminal device of the normal processing capability.

In step 802, the network device sends a message 2 to the terminal device. Message 2 includes scheduling information corresponding to the type of current processing capability.

In step 803, the terminal device sends a message 3 to the network device. The terminal device sends a message 3 according to the resource location indicated in the scheduling information. For example, referring also to fig. 6, a terminal device with normal processing capability transmits message 3 in time slot a, and a terminal device with relaxed processing capability transmits message 3 in time slot B.

In step 804, the network device sends message 4 to the terminal device.

Referring to fig. 9, fig. 9 shows a data transmission device 90. The data transmission device 90 may include:

a communication module 901, configured to receive a random access response, where the random access response includes at least one scheduling information; when the random access response includes two or more scheduling information, the communication module 901 sends data at the indicated resource position according to the corresponding scheduling information, and different scheduling information corresponds to different terminals;

a processing module 902, configured to, when the random access response includes a scheduling information, start a first timer if the random access response includes a first scheduling information and when a resource location indicated by the first scheduling information fails to transmit data, and monitor a downlink control channel during operation of the first timer.

In this embodiment, the data transmission device 90 may correspond to a Chip with a data transmission function in a terminal device, such as an SOC (System-On-a-Chip), a baseband Chip, etc.; or the terminal equipment comprises a chip module with a PDCCH detection function; or corresponds to a chip module having a chip with a data processing function or corresponds to a terminal device.

In another non-limiting embodiment, the communication module 901 is configured to send a random access response, the random access response including at least one scheduling information, and the communication module 901 is further configured to receive data.

In this embodiment, the data transmission device 90 may correspond to a Chip with a data transmission function in a network device, such as an SOC (System-On-a-Chip), a baseband Chip, etc.; or corresponds to a network device comprising a chip module with a PDCCH detection function; or corresponds to a chip module having a chip with a data processing function or corresponds to a network device.

For more details of the working principle and the working manner of the data transmission device 90, reference may be made to the related descriptions in fig. 1 to 8, which are not repeated here.

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 part of the modules/units may be implemented in software program, where the software program runs on a processor integrated inside the chip, and the rest (if any) of the 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, product, or application to or integrated with the terminal, each module/unit included in the device, product, or application may be implemented by using hardware such as a circuit, different modules/units may be located in the same component (for example, a chip, a circuit module, or the like) or different components in the terminal, or at least part of the modules/units 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) part of the modules/units may be implemented by using hardware such as a circuit.

The embodiment of the application also discloses a storage medium which is a computer readable storage medium and is stored with a computer program, and the computer program can execute the steps of the data transmission method when running.

The embodiment of the application also discloses a terminal device, which can comprise a memory and a processor, wherein the memory stores a computer program capable of running on the processor. The steps of the aforementioned data transmission method may be performed when the processor runs the computer program. The terminal equipment comprises, but is not limited to, mobile phones, computers, tablet computers and other terminal equipment.

The embodiment of the application also discloses a network device, which can comprise a memory and a processor, wherein the memory stores a computer program capable of running on the processor. The steps of the aforementioned data transmission method may be performed when the processor runs the computer program. The network device includes, but is not limited to, a terminal device such as a mobile phone, a computer, a tablet computer, and the like.

The embodiment of the application defines a unidirectional communication link from an access network to a terminal as a downlink, wherein data transmitted on the downlink is downlink data, and the transmission direction of the downlink data is called as a downlink direction; and the unidirectional communication link from the terminal to the access network is an uplink, the data transmitted on the uplink is uplink data, and the transmission direction of the uplink data is called as uplink direction.

It should be understood that the term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In this context, the character "/" indicates that the front and rear associated objects are an "or" relationship.

The term "plurality" as used in the embodiments of the present application means two or more.

The first, second, etc. descriptions in the embodiments of the present application are only used for illustrating and distinguishing the description objects, and no order is used, nor is the number of the devices in the embodiments of the present application limited, and no limitation on the embodiments of the present application should be construed.

The "connection" in the embodiment of the present application refers to various connection manners such as direct connection or indirect connection, so as to implement communication between devices, which is not limited in the embodiment of the present application.

Referring to fig. 10, the embodiment of the application further provides a hardware structure schematic diagram of the communication device. The apparatus comprises a processor 1001, a memory 1002 and a transceiver 1003.

The processor 1001 may be a general purpose central processing unit (central processing unit, CPU), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present application. The processor 1001 may also include a plurality of CPUs, and the processor 1001 may be one single-core (single-CPU) processor or may be a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, or processing cores for processing data (e.g., computer program instructions).

The memory 1002 may be a ROM or other type of static storage device, a RAM or other type of dynamic storage device that can store static information and instructions, or that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disk read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, as embodiments of the application are not limited in this regard. The memory 1002 may be provided separately (in this case, the memory 1002 may be provided outside the apparatus or inside the apparatus), or may be integrated with the processor 1001. Wherein the memory 1002 may contain computer program code. The processor 1001 is configured to execute computer program code stored in the memory 1002, thereby implementing the method provided by the embodiment of the present application.

The processor 1001, the memory 1002, and the transceiver 1003 are connected by a bus. The transceiver 1003 is used to communicate with other devices or communication networks. Alternatively, the transceiver 1003 may include a transmitter and a receiver. The means for implementing the receiving function in the transceiver 1003 may be regarded as a receiver for performing the steps of receiving in an embodiment of the application. The means for implementing the transmit function in the transceiver 1003 may be considered a transmitter for performing the transmit steps in embodiments of the present application.

While the schematic structural diagram shown in fig. 10 is used to illustrate the structure of the terminal device according to the above embodiment, the processor 1001 is used to control and manage the actions of the terminal device, for example, the processor 1001 is used to support the terminal device to perform steps 301, 302 and 303 in fig. 3, 401 and 403 in fig. 4, or 501 and 504 in fig. 5, 701, 702 and 703 in fig. 7, or 801 and 803 in fig. 8, and/or actions performed by the terminal device in other processes described in the embodiments of the present application. The processor 1001 may communicate with other network entities, such as with the network devices described above, through the transceiver 1003. The memory 1002 is used for storing program codes and data of the terminal device. The processor, when running the computer program, may control the transceiver 1003 to receive message 2 or message 4, or to send message 1 and message 3.

While the schematic diagram shown in fig. 10 is used to illustrate the structure of the network device according to the above embodiment, the processor 1001 is used to control and manage the actions of the network device, for example, the processor 1001 is used to support the network device to perform steps 402 and 404 in fig. 4, or steps 502, 503 and 505 in fig. 5, and/or actions performed by the network device in other processes described in the embodiments of the present application. The processor 1001 may communicate with other network entities, for example, with the terminal devices described above, through the transceiver 1003. Memory 1002 is used to store program codes and data for the network devices. The processor, when running the computer program, may control the transceiver 1003 to send message 2 or message 4, or to receive message 1 and message 3.

Although the present application is disclosed above, the present application is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the application, and the scope of the application should be assessed accordingly to that of the appended claims.

Claims (18)

1. A data transmission method, comprising:

receiving a random access response, the random access response including at least one scheduling information;

When the random access response comprises two or more scheduling information, sending data at the indicated resource position according to the corresponding scheduling information, wherein different scheduling information corresponds to different terminals;

or alternatively, the process may be performed,

when the random access response includes a kind of scheduling information, if the random access response includes a first scheduling information and data cannot be transmitted at a resource location indicated by the first scheduling information, a first timer is started, and a downlink control channel is monitored during operation of the first timer.

2. The data transmission method according to claim 1, wherein the different terminals are terminals having different types or terminals having different capabilities including a normal processing capability and a relaxed processing capability.

3. The data transmission method according to claim 2, wherein when the random access response includes two or more kinds of scheduling information, a part of the two or more kinds of scheduling information corresponds to the normal processing capability, and another part of the two or more kinds of scheduling information corresponds to the relaxed processing capability.

4. The data transmission method according to claim 1, wherein a time interval between a resource location indicated by different scheduling information and a reception time of the random access response is different.

5. The method of claim 1, wherein listening for a downlink control channel during operation of the first timer comprises:

and monitoring a downlink control channel during the operation of the first timer, and sending data at a resource position indicated by new scheduling information contained in the downlink control channel.

6. The data transmission method according to claim 1, wherein the starting the first timer includes:

starting the first timer at a first transmission time interval after an end position of the resource position indicated by the first scheduling information;

or starting the first timer at the earliest data transmission resource position supported by the terminal with relaxed processing capacity, wherein the earliest data transmission resource position is determined according to the relaxed processing capacity;

or starting the first timer at an nth transmission time interval after the end position of the resource position indicated by the first scheduling information, wherein N is a positive integer greater than 1.

7. The data transmission method according to claim 6, wherein a time interval between a resource location of the earliest data transmission supported by the relaxed processing capability terminal and a reception time of the random access response is: 2n1+2n2+0.5 milliseconds, where N1 represents the processing time of the PDSCH and N2 represents the preparation time of the PUSCH.

8. The data transmission method according to claim 1, wherein the random access response includes first indication information for indicating that the random access response includes one kind of scheduling information or that the random access response includes two or more kinds of scheduling information.

9. The data transmission method according to claim 1, wherein when the random access response includes two or more kinds of scheduling information, the random access response includes a plurality of types of uplink grants, and different types of uplink grants correspond to different scheduling information.

10. The data transmission method according to claim 1, wherein when the random access response includes two or more kinds of scheduling information, the random access response includes an uplink grant, the TDRA field of the uplink grant corresponds to a plurality of TDRA tables, different TDRA tables correspond to the same or different scheduling information, and scheduling delays corresponding to the same index in the different TDRA tables are the same or different, and the scheduling delays are used to indicate time domain positions of data transmission.

11. The data transmission method of claim 10, wherein the plurality of TDRA tables comprises a first TDRA table and a second TDRA table.

12. The method according to claim 1, wherein when the random access response includes two or more kinds of scheduling information, the random access response includes an uplink grant, the TDRA field of the uplink grant corresponds to a TDRA table, the TDRA table has a plurality of sets of scheduling delays, the values of the plurality of sets of scheduling delays corresponding to the same index are different, the scheduling delays of the different sets correspond to different scheduling information, and the scheduling delays are used to indicate time domain positions of data transmission.

13. A data transmission method, comprising:

transmitting a random access response, the random access response including at least one scheduling information;

and receiving data, wherein the data is transmitted at indicated resource positions according to corresponding scheduling information when the random access response comprises two or more scheduling information, different scheduling information corresponds to different terminals, or is transmitted after monitoring a downlink control channel during the operation of a first timer if the random access response comprises a first scheduling information and the resource positions indicated by the first scheduling information cannot transmit data when the random access response comprises one scheduling information.

14. A data transmission apparatus, comprising:

a communication module for receiving a random access response, the random access response comprising at least one scheduling information;

when the random access response comprises two or more scheduling information, the communication module sends data at the indicated resource position according to the corresponding scheduling information, and different scheduling information corresponds to different terminals;

or alternatively, the process may be performed,

and the processing module is used for starting a first timer when the random access response comprises first scheduling information and the resource position indicated by the first scheduling information cannot send data, and monitoring a downlink control channel during the operation of the first timer.

15. A data transmission apparatus, comprising:

a communication module configured to transmit a random access response, where the random access response includes at least one scheduling information;

the communication module is further configured to receive data, where the data is sent at indicated resource locations according to corresponding scheduling information when the random access response includes two or more types of scheduling information, and different scheduling information corresponds to different terminals, or the data is sent after the random access response includes one type of scheduling information, if the random access response includes a first scheduling information and the data cannot be sent at a resource location indicated by the first scheduling information, starting a first timer, and monitoring a downlink control channel during operation of the first timer.

16. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, performs the steps of the data transmission method according to any one of claims 1 to 13.

17. A terminal device comprising a memory and a processor, the memory having stored thereon a computer program executable on the processor, characterized in that the processor executes the steps of the data transmission method according to any of claims 1 to 12 when the computer program is executed.

18. A network device comprising a memory and a processor, the memory having stored thereon a computer program executable on the processor, characterized in that the processor executes the steps of the data transmission method as claimed in claim 13 when the computer program is executed.