WO2025030352A1 - Scheduling request method, and communication apparatus - Google Patents

Abstract

The present application relates to the technical field of communications. Provided are a scheduling request (SR) method, and a communication apparatus. The method comprises: a network device sending first configuration information, which comprises a group identifier of a first terminal device group, and resource indication information, wherein the resource indication information indicates a resource set that is allocated to the first terminal device group for transmitting an SR signal; and the network device receiving, on some or all resource sets, an SR signal sent by one or more terminal devices in the first terminal device group. On the basis of the method described in the present application, the reduction of overheads of SR resources is facilitated.

Description

A scheduling request method and communication device Technical Field

The present application relates to the field of communication technology, and in particular to a scheduling request method and a communication device.

Background Art

The scheduling request (SR) signal is a signal used by terminal devices to request uplink data transmission. However, with the development of the times, the number of terminal devices is increasing. When there are many terminals in the connected state in a cell, the overhead of the pre-configured SR resources for each terminal device is too large, which has become one of the performance bottlenecks of the existing network. Among them, SR resources refer to the resources used to transmit SR signals. How to reduce the overhead of SR resources is a technical problem that needs to be solved urgently.

Summary of the invention

The present application proposes a scheduling request method and a communication device, which are beneficial to reducing the overhead of SR resources based on the method described in the present application.

In the first aspect, the present application proposes a scheduling request method, which includes: sending first configuration information, the first configuration information including a group identifier and resource indication information of a first terminal device group, the resource indication information indicating a resource set allocated to the first terminal device group for transmitting a scheduling request signal; receiving a scheduling request signal sent by one or more terminal devices in the first terminal device group on part or all of the resource set.

Based on the method described in the first aspect, multiple terminal devices can share SR resources, thereby saving SR resource overhead.

In a possible implementation, after receiving a scheduling request signal sent from one or more terminal devices in the first terminal device group on a partial or full resource set, the method further includes: sending downlink control information DCI corresponding to the first terminal device group on the first resource, the DCI is used to schedule one or more terminal devices for uplink transmission, the first resource is determined based on a response window parameter and a partial or full resource set that carries the scheduling request signal; receiving uplink data from one or more terminal devices. Based on this implementation, the terminal devices in the first terminal device group can all receive their corresponding DCI at specific time-frequency resource locations.

In a possible implementation, the first configuration information also includes a resource offset, and the resource offset is used to determine the resource carrying the uplink data of the terminal device. Based on this implementation, the resource offsets between each terminal device in the first terminal device group are different. When multiple terminal devices in the group are scheduled with the same time-frequency resources, by superimposing different resource offsets, the resources used by each terminal device for uplink transmission can be different, and resource conflicts can be avoided. At the same time, the network device can also determine the terminal device sending data based on the resources carried by different data.

In a possible implementation, generation of the DCI is related to the group identifier of the first terminal device group, and the DCI includes scheduling information for uplink transmission and a check bit corresponding to the DCI. Based on this implementation, other devices except the first terminal device group can be prevented from reading the DCI.

In a possible implementation, the first configuration information further includes a pilot scrambling code identifier, and a pilot port or a pilot sequence of uplink data of the terminal device is related to the pilot scrambling code identifier. Based on this implementation, since different terminal devices in the first terminal device group have different pilot scrambling code identifiers, the network device can determine the terminal device sending data by blindly detecting the pilot signal of the uplink data.

In a possible implementation, the scrambling sequence of the uplink data of the terminal device is related to the specific identification of the terminal device. Based on this implementation, different terminal devices in the first terminal device group have different specific identifications, which enables the network device to determine the terminal device sending data by blindly detecting the uplink data.

In a possible implementation, before sending the first configuration information, the method further includes: grouping multiple terminal devices based on perception information, the grouping result includes a first terminal device group, and the perception information is used to locate the position of the terminal device and/or to determine the channel state information of the terminal device. Through the perception information, the network device can divide the terminal devices with similar positions or similar beams into a group, so that the terminal devices with similar positions or similar beams can share the same set of resource sets, which is conducive to the implementation of the method described in the present application. For example, the terminals within the same beam range can be divided into a group to ensure that the terminal devices in this group have the same large-scale channel characteristics. At the same time, the network device can also estimate the power strength of the SR signal sent by a terminal device with the assistance of the echo signal, so as to estimate the number of terminal devices sending the SR signal based on the power strength of the received SR signal, and then infer the number of terminal devices that will send uplink data next, which is conducive to reducing the delay in detecting the channel corresponding to the uplink data.

In a second aspect, the present application proposes a scheduling request method, the method comprising: receiving first configuration information from a network device, the first configuration information comprising a group identifier and resource indication information of a first terminal device group, the resource indication information indicating a resource set allocated to the first terminal device group for transmitting a scheduling request signal; and sending a scheduling request signal to the network device on part or all of the resource set. The corresponding beneficial effects can be referred to the corresponding description of the first aspect above, which will not be repeated here.

In one possible implementation, after sending a scheduling request signal to the network device on part or all of the resource set, the method also includes: receiving downlink control information DCI from the network device on a first resource, the DCI being used to schedule the terminal device for uplink transmission, the first resource being determined based on a response window parameter and part or all of the resource set carrying the scheduling request signal; and sending uplink data to the network device.

In a possible implementation manner, the first configuration information also includes a resource offset, and the resource offset is used to determine resources for carrying uplink data.

In a possible implementation, generation of DCI is related to the group identifier of the first terminal device group, and the DCI includes scheduling information for uplink transmission and corresponding check bits.

In a possible implementation manner, the first configuration information further includes a pilot scrambling code identifier, and a pilot port or a pilot sequence of uplink data is related to the pilot scrambling code identifier.

In a possible implementation, the scrambling sequence of the uplink data is related to a specific identifier of the terminal device.

In a possible implementation, the method further includes: sending an echo signal to a network device, the echo signal is used to determine perception information, and the perception information is used to locate the position of the terminal device and/or to determine channel state information of the terminal device.

In a third aspect, the present application provides a communication device, wherein the communication device may also be a chip system. The communication device may execute the method described in the first aspect. The functions of the communication device may be implemented by hardware, or by hardware executing corresponding software implementations. The hardware or software includes one or more units or modules corresponding to the above functions. The unit or module may be software and/or hardware. The operations and beneficial effects performed by the communication device may refer to the methods and beneficial effects described in the first aspect above, and the repetitive parts will not be repeated.

In a fourth aspect, the present application provides a communication device, wherein the communication device may also be a chip system. The communication device may execute the method described in the second aspect. The functions of the communication device may be implemented by hardware, or by hardware executing corresponding software implementations. The hardware or software includes one or more units or modules corresponding to the above functions. The unit or module may be software and/or hardware. The operations and beneficial effects performed by the communication device may refer to the method and beneficial effects described in the second aspect above, and the repetitive parts will not be repeated.

In a fifth aspect, the present application provides a communication device, comprising a processor, and when the processor calls a computer program in a memory, the method described in the first aspect or the second aspect is executed.

In a possible implementation, the communication device further includes a memory, and the memory and the processor are coupled to each other. Optionally, the memory and the processor are integrated together.

In a possible implementation, the communication device further includes a transceiver, and the transceiver is used to send and receive data and/or signaling.

In a sixth aspect, the present application provides a communication device, which includes a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices outside the communication device and transmit them to the processor or send signals from the processor to other communication devices outside the communication device, and the processor executes the method described in the first aspect or the second aspect through a logic circuit or executing code instructions.

In a seventh aspect, the present application provides a computer-readable storage medium storing a computer program or instructions. When the computer program or instructions are executed by a communication device, the method described in the first aspect or the second aspect is executed.

In an eighth aspect, an embodiment of the present application provides a computer program or a computer program product, including codes or instructions. When the codes or instructions are executed on a computer, the computer executes the method described in the first aspect or the second aspect.

In a ninth aspect, an embodiment of the present application provides a communication system, which includes the communication device provided in the third and fourth aspects above.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a communication system provided in an embodiment of the present application;

FIG2 is a schematic diagram of a flow chart of a scheduling request method provided in an embodiment of the present application;

FIG3 is a schematic diagram of determining a first resource provided in an embodiment of the present application;

FIG4 is a schematic diagram of determining resources for transmitting uplink data provided in an embodiment of the present application;

FIG5 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application;

FIG6 is a schematic diagram of the structure of another communication device provided in an embodiment of the present application;

FIG. 7 is a schematic diagram of the structure of a chip provided in an embodiment of the present application.

DETAILED DESCRIPTION

The terms "first" and "second" and the like in the specification, claims and drawings of this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

In the present application, "at least one (item)" means one or more, "more than one" means two or more, "at least two (items)" means two or three and more than three, and "and/or" is used to describe the corresponding relationship of associated objects, indicating that three relationships may exist. For example, "A and/or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character "/" generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

The following is an introduction to the system architecture of the embodiment of the present application:

To facilitate understanding of the technical solution of the embodiment of the present application, the system architecture of the method provided by the embodiment of the present application is briefly described below. It is understandable that the system architecture described in the embodiment of the present application is to more clearly illustrate the technical solution of the embodiment of the present application, and does not constitute a limitation on the technical solution provided by the embodiment of the present application.

The technical solution of the embodiment of the present application can be applied to various communication systems, such as satellite communication systems and traditional mobile communication systems. Among them, the satellite communication system can be integrated with the traditional mobile communication system (i.e., ground communication system). Communication systems such as wireless local area network (WLAN) communication system, wireless fidelity (Wi-Fi) system, long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), fifth generation (5G) system or new radio (NR), and other future communication systems, such as the sixth generation (6G) system, etc., also support communication systems that integrate multiple wireless technologies, for example, it can also be applied to non-terrestrial networks (NTN) such as drones, satellite communication systems, high altitude platform (HAPS) communication, and systems that integrate ground mobile communication networks.

FIG. 1 is an example of a communication system applicable to an embodiment of the present application. The communication system includes at least one network device and at least one terminal device. FIG. 1 takes a network device and a plurality of terminal devices as an example. The plurality of terminal devices may be cellular phones, smart phones, portable computers, handheld communication devices, handheld computing devices, satellite radio devices, global positioning systems, personal digital assistants (PDAs), and/or any other suitable devices for communicating on a wireless communication system, and may all be connected to the network device. The terminal devices may all communicate with the network device. Of course, the number of terminal devices and network devices in FIG. 1 is only an example, and may be less or more.

The network device in this application has a wireless transceiver function and is used to communicate with a terminal. Specifically, it may refer to a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in a 5G mobile communication system, a next generation base station in a 6th generation (6G) mobile communication system, an access network device or a module of an access network device in an open access network (open RAN, ORAN) system, a base station in a future mobile communication system, or an access node in a WiFi system, etc. The network device may also be a module or unit that can implement some functions of a base station. For example, the network device may be a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc., as described below. Among them, in the ORAN system, CU can also be called O-CU, DU can also be called open (open, O)-DU, CU-CP can also be called O-CU-CP, CU-UP can also be called O-CUP-UP, and RU can also be called O-RU. Exemplarily, the base station in the embodiment of the present application can include various forms of base stations, such as: macro base stations, micro base stations (also called small stations), relay stations, access points, next-generation base stations (gNodeB, gNB), transmission and receiving points (transmitting and receiving points, TRP), transmitting points (transmitting point, TP), mobile switching centers, and can also be devices that undertake wireless access functions in device-to-device (D2D), vehicle-to-everything (V2X), machine-to-machine (machine-to-machine, M2M) communications, and Internet of Things (Internet of Things) communications. In addition, in this application, unless otherwise specified, "network device" may refer to the network device itself or a component in the network device, such as a chip system, a system-on-a-chip (SOC), which may be installed in the network device.

The terminal device mentioned in the embodiments of the present application may be a device with wireless transceiver function, specifically, user equipment (UE), access terminal, subscriber unit, user station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent or user device. The terminal device may also be a satellite phone, a cellular phone, a smart phone, a wireless data card, a wireless modem, a machine type communication device, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a 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 communication device carried on a high-altitude aircraft, a wearable device, a drone, a robot, a terminal in device-to-device communication (D2D), a vehicle to vehicle network (V2V), a mobile phone, ... The present application does not limit the terminal devices in the present invention, such as terminals in V2X, virtual reality (VR), augmented reality (AR), wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home, or terminal devices in future communication networks, etc. In addition, in the present application, when not specifically stated, "terminal device" may refer to the terminal device itself or a component in the terminal device, such as a chip system, SoC, which may be installed in the terminal device.

Scheduling request (SR) is used by terminal devices to request uplink data transmission. The network device will allocate resources for periodic transmission of SR to the terminal device. Correspondingly, the terminal device will also periodically determine whether uplink data transmission is required. If uplink transmission is required, the SR signal will be sent on the corresponding time-frequency resources. However, when the number of terminal devices in the connected state in the cell is large and the number of time-frequency resources is limited, the period for each terminal device to obtain resources for transmitting SR signals will increase, which may further affect the uplink transmission delay of the terminal device. The overhead of pre-configured SR resources for each terminal device is too large, which has become one of the performance bottlenecks of the existing network. Therefore, how to reduce the overhead of SR resources is a technical problem that needs to be solved urgently.

In order to reduce the overhead of SR resources, an embodiment of the present application proposes a scheduling request method, as shown in Figure 2, the scheduling request method includes steps 201 and 202. The execution subjects corresponding to the method shown in Figure 2 are terminal devices and network devices, respectively. Alternatively, the execution subject of the method shown in Figure 2 can be a chip in the terminal device and the network device. Figure 2 is illustrated using the terminal device and the network device as examples. The embodiment of the present application does not limit the execution subject of the scheduling request method. The terminal device and the network device can be the terminal device and the network device shown in Figure 1. Among them:

201. The network device sends first configuration information, and correspondingly, the terminal device receives the first configuration information from the network device, where the first configuration information includes a group identifier and resource indication information of a first terminal device group, where the resource indication information indicates a resource set allocated to the first terminal device group for transmitting SR signals.

In an embodiment of the present application, the network device may send the first configuration information to the first terminal device group by broadcasting, multicasting or unicasting, and the first configuration information includes the group identifier of the first terminal device group. Optionally, the first configuration information may be carried in a radio resource control (RRC) signaling. For example, broadcasting refers to the network device sending the first configuration information to all terminal devices in the network at the same time. All terminal devices described here are limited to a range, which can be called a broadcast domain. All terminal devices in the broadcast domain may belong to the first terminal device group. Multicasting refers to the network device sending the first configuration information to a group of terminal devices at the same time. The group of terminal devices may belong to the first terminal device group. Unicasting refers to the network device sending the first configuration information to each device in the first terminal device group separately. Among them, the group identifier and resource indication information of the first terminal device group included in the first configuration information received by each terminal device in the first terminal device group are the same.

Among them, the first configuration information includes a group identifier and resource indication information of the first terminal device group. The group identifier is used by the terminal device to determine the terminal device group to which it belongs, and is also used by the network device to distinguish different terminal device groups. Optionally, the group identifier can be a scheduling request radio network temporary identity (scheduling request-radio network temporary identity, SR-RNTI). The resource indication information indicates a resource set allocated to the first terminal device group for transmitting SR signals, and the terminal devices of the first terminal device group all share the resource set. It can be understood that one terminal device group corresponds to one resource set, two terminal devices belonging to the same terminal device group share the same resource set, and two terminal devices belonging to different terminal device groups use different resource sets.

The terminal device needs to periodically obtain SR resources. When uplink transmission is required, the terminal device sends an SR signal on the SR resource corresponding to the period. The SR resource is a time-frequency resource used to send the SR signal. The resource set allocated to the first terminal device group for transmitting SR signals refers to a periodic time-frequency resource set allocated to the first terminal device group for transmitting SR signals, and the resource set includes multiple SR resources.

202. The terminal device sends an SR signal to the network device on part or all of the resource set. Correspondingly, the network device receives an SR signal sent by one or more terminal devices in the first terminal device group on part or all of the resource set.

In an embodiment of the present application, part or all of the resource set refers to part or all of the resources in the resource set. When a terminal device needs to send data, it will send an SR signal on the SR resource in the current cycle. If no data needs to be sent, the terminal device will not send an SR signal. After the network device receives the SR signal sent by one or more terminal devices in the first terminal device group, it can be determined that there are terminal devices in the first terminal device group that need to perform uplink transmission, and the network device will allocate resources to the first terminal device group. Based on this implementation method, multiple terminal devices can share SR resources, thereby saving the overhead of SR resources.

In a possible implementation, the first configuration information also includes a response window parameter. After executing step 202, the method further includes: the network device sends downlink control information (DCI) corresponding to the first terminal device group on the first resource, the DCI being used to schedule one or more terminal devices for uplink transmission, and the first resource is based on the response window parameter and the SR signal carried. Determined by part or all of the resource set; after receiving the DCI, the terminal device sends uplink data to the network device, and correspondingly, the network device receives uplink data from one or more terminal devices.

Among them, the response window parameter is used to indicate the first resource in combination with the SR resource. The first resource is a resource used by the network device to send DCI. The resource here refers to the communication resource required by the base station to transmit DCI, including one or more of time resources, frequency domain resources and other resources. The terminal device can determine the first resource based on the resource where the sent SR signal is located and the response window, and listen to the DCI at the location of the first resource. Optionally, the response window parameter may refer to a time offset, and the location of the first resource is the location corresponding to the SR resource plus the time offset. Exemplarily, as shown in Figure 3, after sending the SR signal, the terminal device determines the first resource based on the time offset indicated by the response window and the resource location where the SR signal is sent, and listens to the DCI sent by the network device on the first resource.

Each SR resource in the resource set corresponds to a first resource. For example, when a terminal device in the first terminal device group sends an SR signal on the first SR resource in the resource set, the network device receives the SR signal on the first SR resource. Both the terminal device and the network device can calculate the first resource corresponding to the first SR resource based on the first SR resource and the response window parameter. The terminal device monitors DCI on the first resource, and the network device sends DCI on the first resource. Among them, the terminal devices in the first terminal device group that have sent SR signals will monitor on the first resource, and the terminal devices in the first terminal device group that have not sent SR signals will not monitor.

The response window parameter may be sent simultaneously with the group identifier and resource indication information of the first terminal device group described above, or may not be sent simultaneously, and this is not limited in the embodiments of the present application.

In the first terminal device group, the response window parameters corresponding to each terminal device are the same. Based on this implementation, the terminal devices in the first terminal device group can all receive their corresponding DCI at specific time-frequency resource locations.

Optionally, the first configuration information also includes a resource offset, and the resource offset is used to determine the resource for carrying the uplink data of the terminal device. Among them, the resource offset of each terminal device in the first terminal device group is different. Specifically, in the above implementation, the DCI sent by the network device includes scheduling information for uplink transmission, and the scheduling information for uplink transmission can be an uplink grant (UL Grant). The DCI indicates the second resource, and the terminal device can determine the resource for carrying the uplink data according to the location of the resource offset and the second resource. Exemplarily, the location of the resource for transmitting the uplink data is the location of the second resource plus or minus the resource offset. Based on this method, since the resource offsets between different terminal devices in the first terminal device group are different, when multiple terminal devices in the group are scheduled with the same time-frequency resources, by superimposing different resource offsets, the resources used for uplink transmission by each terminal device can be different, and resource conflicts can be avoided. At the same time, the network device can also determine the terminal device corresponding to the uplink data according to the resources carried by different uplink data.

Exemplarily, as shown in FIG4, it is assumed that in the first terminal device group, terminal device 1 and terminal device 2 both send SR signals to the network device and receive DCI from the network device, the DCI indicating the second resource, wherein the resource offsets obtained by terminal device 1 and terminal device 2 are different, terminal device 1 corresponds to resource offset 1, and terminal device 2 corresponds to resource offset 2. Terminal device 1 determines resource 1 based on resource offset 1 and the location of the second resource, and resource 1 is a resource used by terminal device 1 to transmit uplink data. Terminal device 2 determines resource 2 based on resource offset 2 and the location of the second resource, and resource 2 is a resource used by terminal device 2 to transmit uplink data. Resource 1 and resource 2 do not overlap with each other, so there will be no conflict between terminal device 1 and terminal device 2 when performing uplink data transmission. Among them, the resource offset in the example of FIG4 represents an offset in the time domain, and the resource offset may also refer to an offset in the frequency domain, or an offset corresponding to both the time domain and the frequency domain.

Among them, the resource offset may be sent simultaneously with the group identification and resource indication information of the first terminal device group described above, or may not be sent simultaneously. When the network device sends the first configuration information in a broadcast or multicast manner, the first configuration information may include the resource offsets corresponding to all the terminal devices in the first terminal device group. When the terminal device receives the first configuration information, it will determine its corresponding resource offset from all the resource offsets in the first terminal device group. When the network device sends the first configuration information in a unicast manner, the first configuration information may only include the resource offset corresponding to one terminal device, that is, the network device sends the first configuration information corresponding to each terminal device in the first terminal device group separately, and the first configuration information may include the corresponding resource offset. Alternatively, the resource offset may not need to be carried in the first configuration information. For example, the resource offset may be carried in the second configuration information. At this time, the network device may send the first configuration information in a broadcast or multicast manner, and send the corresponding second configuration information to each terminal device in the first terminal device group in a unicast manner.

Alternatively, the resource offset is related to the specific identifier of the terminal device, and the resource offset is used to determine the resources that carry the uplink data of the terminal device. The resource offset is the same as the resource offset described above, but is not configured by the network device, but is determined by the terminal device according to its own specific identifier. Since the specific identifier of each terminal device is different, the resource offset between each terminal device is different. Therefore, the resources used by each terminal device for uplink transmission are also different, thereby avoiding resource conflicts. Further optionally, the specific identifier of the terminal device is a cell-radio network temporary identifier (C-RNTI). Based on this method, the network device does not need to send a resource offset to the terminal device, saving resource overhead.

Optionally, the generation of DCI is related to the group identifier of the first terminal device group, and the DCI includes scheduling information for uplink transmission and a check bit corresponding to the DCI. Specifically, the scheduling information for uplink transmission can also be further understood as the information indicating the second resource described above, that is, the scheduling information for uplink transmission can be UL Grant. The check bit corresponding to the DCI is mainly used to detect whether the DCI is interfered with and an error occurs during the transmission process. The group identifier of the first terminal device can be used to scramble the check bit corresponding to the DCI. After the terminal device in the first terminal device group receives the DCI, the DCI can be read according to the group identifier of the first terminal device. Even if other devices outside the first terminal device group receive the DCI, they cannot read the DCI because they do not obtain the group identifier of the first terminal device. Therefore, based on this method, it is possible to avoid other devices other than the first terminal device group from reading the DCI.

Since the resource set is shared by the first terminal device group, after receiving the SR signal, the network device can only determine that there are terminal devices in the first terminal device group that need to transmit data, but cannot determine which terminal devices need to transmit data. Therefore, after receiving the uplink data, it is difficult for the network device to distinguish which terminal device the uplink data comes from. In order to enable the network device to distinguish which terminal device the received uplink data comes from, at least one of the following three methods can be used:

Method 1: The first configuration information also includes a pilot scrambling code identifier, and the pilot port or pilot sequence of the uplink data of the terminal device is related to the pilot scrambling code identifier. Among them, the pilot scrambling code identifier of each terminal device in the first terminal device group is different. The pilot scrambling code identifier is used to scramble the pilot signal of the uplink data. For example, when the terminal device sends uplink data, it scrambles the pilot signal based on the pilot scrambling code identifier, and when the network device receives the uplink data, it performs blind detection on the pilot signal of the uplink data. Since the pilot scrambling code identifiers of different terminal devices in the first terminal device group are different, when the network device parses the corresponding pilot signal based on the pilot scrambling code identifier of a terminal device in the first terminal device group, it can be determined that the uplink data corresponding to the pilot signal comes from the terminal device. Optionally, the pilot signal can refer to a demodulation reference signal (Demodulation Reference Signal, DMRS). Based on this method, the pilot scrambling code identifiers of different terminal devices in the first terminal device group are different, which enables the network device to determine the terminal device sending data by blindly detecting the pilot signal of the uplink data.

Among them, the pilot scrambling code identifier may be sent simultaneously with the group identifier and resource indication information of the first terminal device group described above, or may not be sent simultaneously. When the network device sends the first configuration information in a broadcast or multicast manner, the first configuration information includes the pilot scrambling code identifiers corresponding to all the terminal devices in the first terminal device group. When the terminal device receives the first configuration information, it will determine the pilot scrambling code identifier corresponding to itself from all the pilot scrambling code identifiers in the first terminal device group. When the network device sends the first configuration information in a unicast manner, the first configuration information may only include the pilot scrambling code identifier corresponding to one terminal device, that is, the network device sends the first configuration information corresponding to each terminal device in the first terminal device group separately, and the first configuration information includes the pilot scrambling code identifier corresponding to it. Alternatively, the pilot scrambling code identifier may not need to be carried in the first configuration information. For example, the pilot scrambling code identifier may be carried in the second configuration information. At this time, the network device may send the first configuration information in a broadcast or multicast manner, and send the second configuration information corresponding to each terminal device in the first terminal device group in a unicast manner.

Optionally, the number of terminal devices included in the first terminal device group is less than a preset threshold. Limiting the number of terminal devices in the first terminal device group is conducive to reducing the burden of blind detection of network devices.

Method 2: The scrambling sequence of the uplink data of the terminal device is related to the specific identifier of the terminal device. Among them, the specific identifier of each terminal device in the first terminal device group is different, and the specific identifier of the terminal device is used to scramble the uplink data of the terminal device. For example, when the terminal device sends uplink data, it scrambles the uplink data based on the specific identifier of the terminal device, and when the network device receives the uplink data, it blindly detects the uplink data. Since the specific identifiers of different terminal devices in the first terminal device group are different, the network device parses the corresponding uplink data based on the specific identifier of a terminal device in the first terminal device group, and then it can be determined that the uplink data comes from the terminal device. Optionally, the specific identifier of the terminal device can be C-RNTI. Based on this method, since the specific identifiers of different terminal devices in the first terminal device group are different, the network device can determine the terminal device sending data by blindly detecting the uplink data.

Optionally, the number of terminal devices included in the first terminal device group is less than a preset threshold. Limiting the number of terminal devices in the first terminal device group is conducive to reducing the burden of blind detection of network devices.

Method three: The network device may also configure the logical channel identifier (LCID) of the uplink data of the terminal device. Optionally, the first configuration information also includes the LCID. The LCID of each terminal device in the first terminal device group is different. After the network device receives the uplink data from the terminal device, the LCID may be read to determine which terminal device the uplink data comes from. Based on this method, the network device can determine the terminal device sending the data by the LCID.

In a possible implementation, before executing step 201, the method further includes: the network device groups multiple terminal devices based on perception information, and the grouping result includes a first terminal device group, and the perception information is used to locate the position of the terminal device and/or to determine the channel state information of the terminal device. The perception information is obtained by the network device by sending a perception signal to the terminal device. Specifically, the network device sends a perception signal to the terminal device and receives an echo signal from the terminal device. Exemplarily, the echo signal may be reflected by the terminal device, or actively transmitted by the terminal device, or may be transmitted by a third-party device, wherein the echo signal is used to determine the perception information. Through the perception information, the network device can group terminal devices with similar positions or similar beams into one group, so that terminals with similar positions can be grouped together. Terminal devices that are close or have similar beams share the same set of resources, which is conducive to the implementation of the method described in the embodiment of the present application. For example, the terminals within the same beam range can be divided into a group to ensure that the terminal devices in this group have the same large-scale channel characteristics. At the same time, the network device can also estimate the power strength of the SR signal sent by a terminal device with the assistance of perception information, thereby estimating the number of terminal devices sending SR signals based on the power strength of the received SR signal, and then inferring the number of terminal devices that will send uplink data next, which is conducive to reducing the delay in detecting the channel corresponding to the uplink data.

In order to implement the functions of the method provided in the above embodiment of the present application, the terminal device and the terminal device may include a hardware structure and/or a software module, and implement the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether a function of the above functions is executed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.

Please refer to Figure 5, which shows a schematic diagram of the structure of a communication device in an embodiment of the present application. The communication device may be a terminal device or a network device. In a possible implementation, the communication device may include a module or unit corresponding to the method/operation/step/action performed by the terminal device or the network device in the above method embodiment, and the unit may be a hardware circuit, or software, or a combination of a hardware circuit and software.

The communication device shown in FIG5 may include a communication unit 501 and a processing unit 502. The processing unit 502 is used for data processing. The communication unit 501 integrates a receiving unit and a sending unit. The communication unit 501 may also be called a transceiver unit. Alternatively, the communication unit 501 may also be split into a receiving unit and a sending unit.

The communication device shown in FIG5 may be a terminal device, or a device that can be used in conjunction with a terminal device. The communication device may also be a chip system. The device may be used to perform some or all of the functions of the terminal device in the method embodiment described in FIG2 above.

The communication unit 501 is used to send first configuration information, which includes a group identifier and resource indication information of a first terminal device group, and the resource indication information indicates a resource set allocated to the first terminal device group for transmitting a scheduling request signal; the communication unit 501 is also used to receive a scheduling request signal sent by one or more terminal devices in the first terminal device group on part or all of the resource set.

In one possible implementation, the first configuration information also includes a response window parameter; after the communication unit 501 receives a scheduling request signal sent by one or more terminal devices in the first terminal device group on a partial or entire resource set, the communication unit 501 is further used to: send downlink control information DCI corresponding to the first terminal device group on the first resource, the DCI is used to schedule one or more terminal devices for uplink transmission, and the first resource is determined based on the response window parameter and a partial or entire resource set that carries the scheduling request signal; receive uplink data from one or more terminal devices.

In a possible implementation, the first configuration information also includes a resource offset, and the resource offset is used to determine resources that carry uplink data of the terminal device.

In a possible implementation, generation of the DCI is related to the group identifier of the first terminal device group, and the DCI includes scheduling information for uplink transmission and a check bit corresponding to the DCI.

In a possible implementation manner, the first configuration information also includes a pilot scrambling code identifier, and a pilot port or a pilot sequence of uplink data of the terminal device is related to the pilot scrambling code identifier.

In a possible implementation, the scrambling sequence of uplink data of the terminal device is related to a specific identifier of the terminal device.

In one possible implementation, before the communication unit 501 sends the first configuration information, the processing unit 502 is also used to group multiple terminal devices based on perception information, and the grouping result includes a first terminal device group, and the perception information is used to locate the position of the terminal device and/or to determine the channel state information of the terminal device.

The communication device shown in FIG5 may be a network device, or a device that can be used in conjunction with a network device. The communication device may also be a chip system. The device may be used to perform some or all of the functions of the network device in the method embodiment described in FIG2 above.

The communication unit 501 is used to receive first configuration information from a network device, wherein the first configuration information includes a group identifier and resource indication information of a first terminal device group, wherein the resource indication information indicates a resource set allocated to the first terminal device group for transmitting a scheduling request signal; the communication unit 501 is also used to send a scheduling request signal to the network device on part or all of the resource set.

In a possible implementation, the first configuration information also includes a response window parameter; after the communication unit 501 sends a scheduling request signal to the network device on part or all of the resource set, the communication unit 501 is also used to receive downlink control information DCI from the network device on the first resource, and the DCI is used to schedule the terminal device for uplink transmission. The first resource is determined based on the response window parameter and part or all of the resource set that carries the scheduling request signal; uplink data is sent to the network device.

In a possible implementation manner, the first configuration information also includes a resource offset, and the resource offset is used to determine resources for carrying uplink data.

In a possible implementation, generation of the DCI is related to the group identifier of the first terminal device group, and the DCI includes scheduling information for uplink transmission. information and the corresponding check digit.

In a possible implementation manner, the first configuration information further includes a pilot scrambling code identifier, and a pilot port or a pilot sequence of uplink data is related to the pilot scrambling code identifier.

In a possible implementation, the scrambling sequence of the uplink data is related to a specific identifier of the terminal device.

In a possible implementation, the communication unit 501 is further used to send an echo signal to the network device, where the echo signal is used to determine perception information, and the perception information is used to locate the position of the terminal device and/or to determine the channel state information of the terminal device.

FIG6 shows a schematic diagram of the structure of a communication device. The communication device 600 may be a terminal device in the above method embodiment, or may be a chip, a chip system, or a processor that supports the terminal device to implement the above method. The communication device may be used to implement the method described in the above method embodiment, and the details may refer to the description in the above method embodiment.

Alternatively, the communication device 600 may be a network device in the above method embodiment, or a chip, a chip system, or a processor that supports the network device to implement the above method. The communication device may be used to implement the method described in the above method embodiment, and the details may refer to the description in the above method embodiment.

The communication device 600 may include one or more processors 601. The processor 601 may be a general-purpose processor or a dedicated processor, etc. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process the communication protocol and communication data, and the central processing unit may be used to control the communication device (such as a base station, a baseband chip, a terminal, a terminal chip, a DU or a CU, etc.), execute a software program, and process the data of the software program.

Optionally, the communication device 600 may include one or more memories 602, on which instructions 604 may be stored, and the instructions may be executed on the processor 601, so that the communication device 600 performs the method described in the above method embodiment. Optionally, data may also be stored in the memory 602. The processor 601 and the memory 602 may be provided separately or integrated together.

Optionally, the communication device 600 may further include a transceiver 605 and an antenna 606. The transceiver 605 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., for implementing a transceiver function. The transceiver 605 may include a receiver and a transmitter, the receiver may be referred to as a receiver or a receiving circuit, etc., for implementing a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., for implementing a transmitting function.

The communication device 600 is a terminal device: the processor 601 is used to perform the data processing operation of the terminal device in the above method embodiment. The transceiver 605 is used to perform the data transceiving operation of the terminal device in the above method embodiment.

Alternatively, the communication device 600 is a network device: the processor 601 is used to perform the data processing operation of the network device in the above method embodiment. The transceiver 605 is used to perform the data transceiving operation of the network device in the above method embodiment.

In another possible design, the processor 601 may include a transceiver for implementing the receiving and sending functions. For example, the transceiver may be a transceiver circuit, or an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and sending functions may be separate or integrated. The above-mentioned transceiver circuit, interface, or interface circuit may be used for reading and writing code/data, or the above-mentioned transceiver circuit, interface, or interface circuit may be used for transmitting or delivering signals.

In another possible design, optionally, the processor 601 may store an instruction 603, and the instruction 603 runs on the processor 601, so that the communication device 600 can execute the method described in the above method embodiment. The instruction 603 may be solidified in the processor 601, in which case the processor 601 may be implemented by hardware.

In another possible design, the communication device 600 may include a circuit that can implement the functions of sending or receiving or communicating in the aforementioned method embodiments. The processor and transceiver described in the embodiments of the present application can be implemented in an integrated circuit (IC), an analog IC, a radio frequency integrated circuit (RFIC), a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc.

The communication device described in the above embodiments may be a terminal device or a network device, but the scope of the communication device described in the embodiments of the present application is not limited thereto, and the structure of the communication device may not be limited by FIG. 6. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be:

(1) Independent integrated circuit IC, or chip, or chip system or subsystem;

(2) having a set of one or more ICs, and optionally, the IC set may also include a storage component for storing data and instructions;

(3) ASIC, such as modem (Mobile Station Modem, MSM);

(4) Modules that can be embedded in other devices;

(5) Receivers, terminals, smart terminals, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.;

(6)Others

For the case where the communication device may be a chip or a chip system, reference may be made to the schematic diagram of the chip structure shown in FIG7 . The system includes a processor 701 and an interface 702. Optionally, the system may further include a memory 703. The number of the processor 701 may be one or more, and the number of the interface 702 may be more than one.

In one design, for a case where a chip is used to implement the functions of a terminal device in an embodiment of the present application:

The interface 702 is used to input or output signals;

The processor 701 is used to execute the data processing operation of the terminal device in the above method embodiment.

In another design, for the case where the chip is used to implement the function of the network device in the embodiment of the present application:

The interface 702 is used to input or output signals;

The processor 701 is used to execute the data processing operation of the network device in the above method embodiment.

It is understandable that some optional features in the embodiments of the present application may be implemented independently in certain scenarios without relying on other features, such as the solution on which they are currently based, to solve corresponding technical problems and achieve corresponding effects, or may be combined with other features according to needs in certain scenarios. Accordingly, the communication device provided in the embodiments of the present application may also implement these features or functions accordingly, which will not be described in detail here.

It should be understood that the processor in the embodiment of the present application can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by an integrated logic circuit of hardware in the processor or instructions in the form of software. The above processor can be a general-purpose processor, a digital signal processor (digital signal processor, DSP), an ASIC, a field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.

It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

The present application also provides a computer-readable medium for storing computer software instructions, which, when executed by a communication device, implement the functions of any of the above method embodiments.

The present application also provides a computer program product for storing computer software instructions, which, when executed by a communication device, implement the functions of any of the above method embodiments.

In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a high-density digital video disc (DVD)), or a semiconductor medium (e.g., a solid state drive (SSD)), etc.

In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

Claims (20)

A scheduling request method, characterized in that the method comprises: Sending first configuration information, wherein the first configuration information includes a group identifier and resource indication information of a first terminal device group, wherein the resource indication information indicates a resource set allocated to the first terminal device group for transmitting a scheduling request signal; A scheduling request signal sent by one or more terminal devices in the first terminal device group is received on part or all of the resource set. The method according to claim 1, characterized in that the first configuration information also includes a response window parameter; After receiving a scheduling request signal sent by one or more terminal devices in the first terminal device group on part or all of the resource sets, the method further includes: Sending downlink control information DCI corresponding to the first terminal device group on a first resource, where the DCI is used to schedule the one or more terminal devices to perform uplink transmission, where the first resource is determined based on the response window parameter and the part or all of the resource set carrying the scheduling request signal; Receive uplink data from the one or more terminal devices. The method according to claim 2 is characterized in that the first configuration information also includes a resource offset, and the resource offset is used to determine the resources carrying the uplink data of the terminal device. The method according to claim 2 or 3 is characterized in that the generation of the DCI is related to the group identifier of the first terminal device group, and the DCI includes scheduling information for uplink transmission and a check bit corresponding to the DCI. The method according to any one of claims 2 to 4 is characterized in that the first configuration information also includes a pilot scrambling code identifier, and the pilot port or pilot sequence of the uplink data of the terminal device is related to the pilot scrambling code identifier. The method according to any one of claims 2 to 4 is characterized in that the scrambling sequence of the uplink data of the terminal device is related to the specific identification of the terminal device. The method according to any one of claims 1 to 6, characterized in that before sending the first configuration information, the method further comprises: A plurality of terminal devices are grouped based on perception information, the grouping result includes the first terminal device group, and the perception information is used to locate the position of the terminal device and/or to determine the channel state information of the terminal device. A scheduling request method, characterized in that the method comprises: Receiving first configuration information from a network device, wherein the first configuration information includes a group identifier and resource indication information of a first terminal device group, wherein the resource indication information indicates a resource set allocated to the first terminal device group for transmitting a scheduling request signal; A scheduling request signal is sent to the network device on part or all of the resource set. The method according to claim 8, characterized in that the first configuration information also includes a response window parameter; After sending a scheduling request signal to the network device on part or all of the resource sets, the method further includes: Receiving downlink control information DCI from the network device on a first resource, where the DCI is used to schedule the terminal device to perform uplink transmission, where the first resource is determined based on the response window parameter and the part or all of the resource set carrying the scheduling request signal; Sending uplink data to the network device. The method according to claim 9 is characterized in that the first configuration information also includes a resource offset, and the resource offset is used to determine the resources carrying the uplink data. The method according to claim 9 or 10, characterized in that the generation of the DCI is related to the group identifier of the first terminal device group The DCI includes scheduling information for uplink transmission and corresponding check bits. The method according to any one of claims 9 to 11 is characterized in that the first configuration information also includes a pilot scrambling code identifier, and the pilot port or pilot sequence of the uplink data is related to the pilot scrambling code identifier. The method according to any one of claims 9 to 11 is characterized in that the scrambling sequence of the uplink data is related to the specific identification of the terminal device. The method according to any one of claims 8 to 13, characterized in that the method further comprises: An echo signal is sent to the network device, where the echo signal is used to determine perception information, where the perception information is used to locate the position of the terminal device and/or to determine channel state information of the terminal device. A communication device, characterized in that the communication device includes a module or unit for executing the method according to any one of claims 1 to 7, or the communication device includes a module or unit for executing the method according to any one of claims 8 to 14. A communication device, characterized in that it comprises a processor coupled to a memory, wherein the processor is used to execute a computer program or instruction stored in the memory to implement the method according to any one of claims 1 to 7 or the method according to any one of claims 8 to 14. The device according to claim 16 is characterized in that the device also includes the memory, and/or a transceiver, and the transceiver is used to send and receive data and/or signaling. A communication device, characterized in that it includes a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices outside the communication device and transmit them to the processor or send signals from the processor to other communication devices outside the communication device, and the processor causes the method described in any one of claims 1 to 7 to be executed through a logic circuit or an execution instruction, or the processor causes the method described in any one of claims 8 to 14 to be executed through a logic circuit or an execution instruction. A computer-readable storage medium, characterized in that a computer program or instruction is stored in the storage medium, and when the computer program or instruction is executed by a communication device, the method as described in any one of claims 1 to 7 is executed, or the method as described in any one of claims 8 to 14 is executed. A communication system, characterized in that the communication system comprises a first device and a second device, the first device is used to execute the method as described in any one of claims 1 to 7, and the second device is used to execute the method as described in any one of claims 8 to 14.