Configuration method and device for channel busy rate measurement

Abstract

Embodiments of the present invention provide a method, system, and device for wireless communication. The method includes: a wireless node configuring a resource authorization for a user equipment (UE), wherein the resource authorization includes authorization for resources of authorization type 1 configured for the UE. The method also includes: the wireless node configuring the UE, wherein the configuration includes a report request for a channel busy rate (CBR) measurement.

Description

Technical Field

[0001] The present invention relates to wireless communications, and in particular to a configuration method for channel busy rate (CBR) measurement Background Art

[0002] Wireless communication technologies are driving the world toward an increasingly interconnected and networked society. High-speed, low-latency wireless communications rely on efficient network resource management and allocation between user mobile stations and radio access network nodes (including but not limited to radio base stations). Next-generation networks are expected to provide high-speed, low-latency, and ultra-reliable communication capabilities to meet the needs of diverse industries and users. To meet the low-latency and high-reliability requirements of vertical industries while supporting next-generation network services, a PC5-based communication method, known as direct link networks, has attracted attention.

[0003] In some other embodiments, the device for wireless communication may include a memory storing instructions and a processing circuit in communication with the memory. When the processing circuit executes the instructions, the processing circuit is configured to perform the above method.

[0004] In some other embodiments, the device for wireless communication may include a memory storing instructions and a processing circuit in communication with the memory. When the processing circuit executes the instructions, the processing circuit is configured to perform the above method.

[0005] In some other embodiments, a computer-readable medium includes instructions that, when executed by a computer, cause the computer to perform the above-described method.

[0006] The above and other aspects and their implementations are described in more detail in the drawings, description and claims of the present invention. Summary of the Invention

[0007] The present invention relates to methods, systems, and devices for wireless communications, and more particularly, to configuration of channel busy rate (CBR) measurements.

[0008] In one embodiment, the present invention provides a method for wireless communication, comprising: a wireless node configuring a resource grant for a user equipment (UE), the resource grant including a grant of resources of a configured grant type 1 for the UE; and the wireless node configuring the UE, the configuration including a report request for a channel busy rate (CBR) measurement.

[0009] In another embodiment, the present invention provides another method for wireless communication. The method includes a user equipment (UE) receiving a resource grant from a wireless node, the resource grant including authorization for a configured grant type 1 resource of the UE, so that the UE uses the configured grant type 1 resource. The method also includes the UE receiving a configuration from the wireless node, the configuration including a request to report a channel busy rate (CBR) measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 An example of a wireless communication system including a central network, one or more radio network nodes, and one or more user equipment is shown.

[0011] Figure 2 An example of a network node is shown.

[0012] Figure 3 An example of a user device is shown.

[0013] Figure 4A A flow chart of a method for wireless communication is shown.

[0014] Figure 4B A flow chart of a method for wireless communication is shown.

[0015] Figure 4C A flow chart of a method for wireless communication is shown.

[0016] Figure 4D A flow chart of a method for wireless communication is shown.

[0017] Figure 5A A flow chart of a method for wireless communication is shown.

[0018] Figure 5B A flow chart of a method for wireless communication is shown.

[0019] Figure 5C A flow chart of a method for wireless communication is shown.

[0020] Figure 5D A flow chart of a method for wireless communication is shown.

[0021] Figure 5E A flow chart of a method for wireless communication is shown.

[0022] Figure 5F A flow chart of a method for wireless communication is shown.

[0023] Figure 5G A flow chart of a method for wireless communication is presented.

[0024] Figure 5H A flow chart of a method for wireless communication is shown.

[0025] Figure 6 A schematic diagram illustrating one embodiment for transmitting information between a wireless node and a user equipment (UE) is shown.

[0026] Figure 7AA user plane packet data convergence protocol (PDCP) protocol data unit (PDU) format is shown.

[0027] Figure 7B Shown Figure 7A The service data unit (SDU) type indicator of the user plane PDCP PDU format is shown. DETAILED DESCRIPTION

[0028] The present invention will be described in detail below with reference to the accompanying drawings which form a part hereof, and specific examples of embodiments will be shown by way of illustration. However, it should be noted that the present invention may be embodied in a variety of different forms, and therefore, the subject matter covered or claimed is not intended to be construed as limited to any of the embodiments set forth below.

[0029] Throughout the specification and claims, terms may have subtle meanings that are suggested or implied in the context rather than their explicitly stated meanings. Likewise, the phrases "in one embodiment" or "in some embodiments" as used herein do not necessarily refer to the same embodiment, and the phrases "in another embodiment" or "in other embodiments" as used herein do not necessarily refer to different embodiments. The phrases "in one implementation" or "in some implementations" as used herein do not necessarily refer to the same implementation, and the phrases "in another implementation" or "in other implementations" as used herein do not necessarily refer to different implementations. For example, claimed subject matter includes all or part of a combination of exemplary embodiments or implementations.

[0030] Generally speaking, terms can be understood at least in part from their usage in the context. For example, terms such as "and", "or" or "and / or" as used herein can include multiple meanings, which can depend at least in part on the context in which the terms are used. Generally, "or" if used in an associative list, such as A, B or C, is intended to mean A, B and C, used here in an inclusive sense, and A, B or C, used here in an exclusive sense. In addition, the terms "one or more" or "at least one" as used herein (depending at least in part on the context) can be used to describe any feature, structure or characteristic in a singular sense, or can be used to describe a combination of features, structures or characteristics in a plural sense. Similarly, terms such as "a", "an" or "the" can also be understood to convey singular usage or to convey plural usage, which depends at least in part on the context. In addition, the terms "based on" or "determined by..." can be understood as not necessarily intended to convey an exclusive set of factors, but can allow for the presence of additional factors that are not necessarily explicitly described, which depends at least in part on the context.

[0031] The present invention provides a configuration method and device for channel busy rate (CBR) measurement. In order to solve some shortcomings of existing communication systems and / or improve the efficiency of communication systems, a user equipment (UE) can communicate directly with another UE without going through a wireless node, for example, the UE sends data directly to another UE through a direct link transmission. In fact, the wireless node may not know the resource utilization because the direct link (sidelink) transmission is directly from one UE to another UE without going through a wireless node. The present invention describes a method and a device that solves the problem of how to enable a wireless node to receive / obtain knowledge about the resource usage status and how to enable the UE to reasonably use the resources according to the configuration configured by the wireless node. In one implementation, the wireless node may be a next-generation NodeB (gNB), and the resources may include configured grant type 1 resources.

[0032] 5G networks are expected to provide high-speed, low-latency, and ultra-reliable communication capabilities that meet the needs of different industries and users. V2X is a long-range communication protocol and data exchange standardization. It can operate in various implementations. In one implementation, communication can perform wireless communication and information exchange between vehicles (V2V). In another implementation, communication can perform wireless communication and information exchange from vehicles to pedestrians (V2P). In another implementation, communication can perform wireless communication and information exchange from vehicles to infrastructure (V2I). Based on V2X technology, vehicles can provide a safer driving environment, faster traffic conditions, and more convenience and entertainment.

[0033] There may be various V2X technologies. In one implementation, a V2X technology may be cellular V2X (C-V2X). C-V2X may include LTE technology. In another implementation, a V2X technology may be dedicated short-range communication V2X (DSRC-V2X). DSRC-V2X may include Wi-Fi technology.

[0034] In one implementation of C-V2X, a UE can communicate with another UE via a direct link (sidelink). Data traffic between UEs may not need to be routed through a radio node or other core network. Data traffic between UEs can be sent directly from a source UE to a destination UE via wireless communication. In some implementations, this V2X communication method may be referred to as PC5-based V2X or V2X direct link communication.

[0035] refer to Figure 1, wireless node 132 or 134 may include an evolved Node B (eNB) or a next generation Node B (gNB). One or more user equipment (UE) (152, 154, and 156) may include a vehicle or a mobile device. In one implementation, UE 152 may include a vehicle, UE 154 may include another vehicle, and UE 156 may include a mobile device. V2X communications may include vehicle-to-vehicle communications 162. A pedestrian has a mobile device 156, and V2X communications may include vehicle-to-pedestrian communications 164 and 166. Communications (162, 164, and 166) may be referred to as PC5-based V2X or V2X direct link communications.

[0036] As technology evolves and the automation industry grows, V2X communications may need to be expanded, and performance requirements may become higher or more stringent. Advanced V2X services can be categorized into the following types: vehicle dispatching, extended sensors, semi-autonomous or fully autonomous driving, and remote driving. In one implementation, to achieve better performance, packet sizes may be supported from 50 bytes to 12,000 bytes; transmission rates may be supported from 2 messages per second to 50 messages per second; end-to-end duration may be supported from 3 milliseconds (ms) to 500 milliseconds; transmission reliability may be supported from 90% to 99.999%; data rates may be supported from 0.5 megabits per second (Mbps) to 1000 Mbps; and transmission ranges may be supported from 50 meters to 1000 meters.

[0037] In one embodiment, the fifth generation communication technology may include V2X communication based on 5G New Radio (NR) Uu and V2X communication based on 5G NR direct link.

[0038] In one implementation, LTE V2X can include two types of UEs: Mode 3 UEs and Mode 4 UEs. Mode 3 UEs can be directly scheduled by a wireless node (e.g., an eNB or gNB). When a UE needs to transmit data, it first sends a Scheduling Request / Buffer Status Report (SR / BSR) to request that the wireless node allocate a direct link grant within a resource pool. After obtaining the direct link grant, the UE can then use the corresponding direct link grant to transmit data.

[0039] In another implementation, a Mode 4 UE can autonomously perform sensing within one or more resource pools. After the sensing process, the UE can find a direct link (sidelink) grant that is not occupied by other UEs. The Mode 4 UE can then use the direct link grant to send data.

[0040] Both Mode 3 UEs and Mode 4 UEs may need to perform Channel Busy Rate (CBR) measurements and reporting for all their configured resource pools.

[0041] In one NR V2X scenario, the gNB can configure resources with a configured Grant Type 1 to a Mode 1 UE. Optionally, the configured Grant Type 1 can be shared among multiple UEs. UEs can communicate with each other via direct link transmissions, without passing through the gNB. In this scenario, the gNB may not be aware of the resource utilization for this configured Grant Type 1, as direct link transmissions are from UE to UE without passing through the gNB, and the CBR report may only reflect the overall utilization of the entire resource pool, and may not reflect the detailed usage of each resource. Therefore, the gNB may not be aware of the accurate CBR for the configured Grant Type 1.

[0042] This invention describes a configuration method and apparatus for channel busy rate (CBR) measurement, thereby resolving at least one of the aforementioned existing problems. This invention also describes how to enable the gNB to understand the usage status of a configured Grant Type 1 and how to enable the UE to properly use the configured Grant Type 1 according to the gNB's configuration.

[0043] Figure 1 A wireless communication system 100 is shown that includes one or more radio network nodes (132 and 134) and one or more user equipment (UE) (152, 154, and 156). The radio network node can be a base station, which can be a nodeB in the context of mobile telecommunications (e.g., an eNB or gNB). Each of the UEs can wirelessly communicate with the radio network node via multiple radio channels 140. For example, a first UE 152 can wirelessly communicate with the first radio network node 132 during a specific time period via a channel that includes multiple radio channels, and the first UE 152 can also wirelessly communicate with the second radio network node 134 during a specific time period via a channel that includes multiple radio channels. Similarly, a second UE 154 and a third UE 156 can wirelessly communicate with the first and second radio network nodes. The first radio network node 132 and the second radio network node 134 can communicate with each other via one or more channels 135.

[0044] refer to Figure 1 UEs may wirelessly communicate and / or exchange information directly with each other via one or more direct links. For example, UE 152 may wirelessly communicate directly with UE 154 via direct link 162; UE 156 may wirelessly communicate directly with UE 154 via direct link 164; and / or UE 152 may wirelessly communicate directly with UE 156 via direct link 166.

[0045] In one implementation, reference Figure 1, the wireless communication system 100 may include another base station functioning as a central unit (CN) 110. The CN 110 may communicate via one or more channels 120 with one or more wireless network nodes functioning as distributed units (DUs).

[0046] Figure 2 An example base station 200 is shown. The example base station may include radio Tx / Rx circuitry 208 to receive and transmit with UEs and / or other base stations. The base station may also include network interface circuitry 209 for communicating the base station with other base stations and / or a core network (e.g., optical or wired interconnects, Ethernet, and / or other data transmission media / protocols). Base station 200 may optionally include an input / output (I / O) interface 206 for communicating with operators and the like.

[0047] The base station may also include system circuitry 204. System circuitry 204 may include a processor 221 and / or memory 222. Memory 222 may include an operating system 224, instructions 226, and parameters 228. Instructions 226 may be configured for one or more of the processors 124 to perform base station functions. Parameters 228 may include parameters used to support execution of instructions 226. For example, the parameters may include network protocol settings, bandwidth parameters, radio frequency mapping assignments, and / or other parameters.

[0048] Figure 3An example UE 300 is shown. UE 300 may be a mobile device, such as a smartphone; or UE 300 may be an electronic device in a vehicle. UE 300 may include a communication interface 302, system circuitry 304, an input / output interface (I / O) 306, a display circuit 308, and a memory 309. The display circuitry may include a user interface 310. System circuitry 304 may include any combination of hardware, software, firmware, or other logic / circuitry. System circuitry 304 may be implemented, for example, using one or more system-on-chips (SoCs), application-specific integrated circuits (ASICs), discrete analog and digital circuits, and other circuitry. System circuitry 304 may be part of the implementation of any desired functionality in UE 300. In this regard, the system circuitry 304 may include logic to facilitate, for example, decoding and playing music and videos, such as MP3, MP4, MPEG, AVI, FLAC, AC3, or WAV decoding and playback; running applications; accepting user input; storing and retrieving application data; establishing, maintaining, and terminating cellular phone calls or data connections, as an example, for Internet connections; establishing, maintaining, and terminating wireless network connections, Bluetooth connections, or other connections; and displaying relevant information on a user interface 310. The user interface 310 and input / output (I / O) interface 306 may include a graphical user interface, a touch-sensitive display, tactile feedback or other tactile output, voice or facial recognition input, buttons, switches, speakers, and other user interface elements. Additional examples of the I / O interface 306 may include a microphone, video and still image cameras, temperature sensors, vibration sensors, rotation and orientation sensors, headphone and microphone input / output jacks, a universal serial bus (USB) connector, a memory card slot, a radiation sensor (e.g., an IR sensor), and other types of inputs.

[0049] refer to Figure 3The communication interface 302 may include radio frequency (RF) transmit (Tx) and receive (Rx) circuitry 316 that handles the transmission and reception of signals via one or more antennas 314. The communication interface 302 may include one or more transceivers. The transceiver may be a wireless transceiver that includes modulation / demodulation circuitry, a digital-to-analog converter (DAC), a shaping table, an analog-to-digital converter (ADC), filters, waveform shapers, filters, pre-amplifiers, power amplifiers, and / or other logic for transmitting and receiving via one or more antennas or (for some devices) via a physical (e.g., wired) medium. The signals transmitted and received may conform to any of a variety of formats, protocols, modulations (e.g., QPSK, 16-QAM, 64-QAM, or 256-QAM), frequency channels, bit rates, and encodings. As a specific example, the communication interface 302 may include a transceiver that supports transmission and reception under 2G, 3G, BT, WiFi, Universal Mobile Telecommunications System (UMTS), High Speed ​​Packet Access (HSPA)+, and 4G / Long Term Evolution (LTE) standards. However, the techniques described below are applicable to other wireless communication technologies, whether from the 3rd Generation Partnership Project (3GPP), the GSM Association, 3GPP2, IEEE, or other partners or standards bodies.

[0050] refer to Figure 3 , the system circuitry 304 may include one or more processors 321 and memory 322. The memory 322 stores, for example, an operating system 324, instructions 326, and parameters 328. The processor 321 is configured to execute the instructions 326 to perform the desired functions for the UE 300. The parameters 328 may provide and specify configuration and operating options for the instructions 326. The memory 322 may also store any BT, WiFi, 3G, 4G, 5G, or other data that the UE 300 will send or has received via the communication interface 302. In various implementations, the system power for the UE 300 may be provided by a power storage device such as a battery or a transformer.

[0051] The present invention describes the following embodiments, which may be partially or completely implemented on the above-mentioned network base station and / or user equipment.

[0052] The present invention provides an embodiment of a method for configuring a channel busy rate (CBR) measurement. The method may be performed by a wireless node, such as an eNB or gNB.

[0053] refer to Figure 4A , method 400 may include step 410: the wireless node configures resource authorization for the user equipment (UE), the resource authorization includes authorization of resources of authorization type 1 configured for the UE; and step 415: the wireless node configures the UE, the configuration includes a report request for channel busy rate (CBR) measurement.

[0054] In step 410, the wireless node may configure a resource grant for the UE. The resource grant may include a grant of resources of a configured grant type 1 for the UE. Thus, the UE may receive the resource grant and use the configured grant type 1 resources to communicate with one or more other UEs.

[0055] In step 415, the wireless node may configure the UE. The configuration may include a report request for a channel busy rate (CBR) measurement. Accordingly, the UE may receive the configuration and determine a report request for the CBR measurement. The report request may include a report type for the CBR measurement for resources with a configured grant type 1.

[0056] refer to Figure 5A , method 500 may include step 510: a user equipment (UE) receives a resource authorization from a wireless node, the resource authorization including an authorization for resources of a configured authorization type 1 for the UE, so that the UE uses the resources of the configured authorization type 1; and step 515: the UE receives a configuration from the wireless node, the configuration including a report request for a channel busy rate (CBR) measurement.

[0057] refer to Figure 5B The method 500 may further include step 520: the UE reports the CBR measurement of the configured grant type 1 resources to the wireless node based on the report request. The configuration may include a reporting type of the CBR measurement of the configured grant type 1 resources.

[0058] The reporting type of CBR measurement may include event-triggered CBR reporting for grant type 1 resources, or periodic reporting for configured CBR reporting for grant type 1 resources.

[0059] When the report type of the CBR measurement includes a CBR report of a resource of grant type 1 based on event triggering, the method 400 may further include: Figure 4B Step 420 in the method 500: The wireless node receives the CBR measurement reported by the UE according to the occurrence of a preset event. When the reporting type of the CBR measurement includes the CBR report of the resources of the grant type 1 triggered by the event, the method 500 may further include: Figure 5C Step 530: The UE reports the CBR measurement to the wireless node according to the occurrence of a preset event.

[0060] The preset events may include a first event in which the CBR measurement is greater than a preset high threshold; and / or a second event in which the CBR measurement is less than a preset low threshold. The preset events may serve as trigger conditions. When the trigger conditions are met, the UE reports the CBR measurement. In one implementation, the preset high threshold may be a CBR value within the range of 0.5 and 1. For example, the preset high threshold may be 0.8. In another implementation, the preset low threshold may be a CBR value within the range of 0 and 0.5. For example, the preset high threshold may be 0.2.

[0061] When the reporting type of the CBR measurement includes periodic reporting of CBR reports on resources with configured grant type 1, the method 400 may further include: Figure 4C Step 430 in the method 500: The wireless node receives the CBR measurement result reported by the UE at a fixed interval. When the reporting type of the CBR measurement includes a periodic report of the CBR report on the resources of the configured grant type 1, the method 500 may further include: Figure 5D Step 540 in : The UE reports the CBR measurement to the wireless node at fixed intervals.

[0062] Whenever a fixed interval has passed, the UE may report the CBR measurement for which new measurement results have become available since the last periodic report or since the measurement was started or reset. In one implementation, the fixed interval may be a time value between 100 milliseconds and 10 seconds. For example, the fixed interval may be 500 milliseconds. In another implementation, the fixed interval for periodic reporting may be configurable by the wireless node.

[0063] In another implementation, Grant Type 1 is optionally configured within a direct link Mode 1 resource pool. When a UE performs a CBR measurement on the Mode 1 resource pool, the UE may exclude the resource locations for the configured Grant Type 1 and perform the CBR measurement on the remainder of the Mode 1 resource pool. This may provide more accurate CBR measurements on the Mode 1 resource pool and / or enable the UE to select more appropriate transmit (Tx) parameters based on the more accurate CBR measurements.

[0064] CBR can be used to reflect the busyness of the resource pool and can be used by wireless nodes to configure the resource pool. In one implementation, for mode 3 UE, when the resource pool is very busy, this corresponds to a larger CBR value (e.g., CBR is about 0.8 or 0.9), and the wireless node (e.g., eNB or gNB) may consider reconfiguring another direct link resource pool for the UE. In another implementation, for mode 4 UE, when the resource pool is very busy, this corresponds to a large value of CBR (e.g., CBR is about 0.8 or 0.9), and the UE may decide to reselect another resource pool on another carrier. Here, in the present invention, the "approximately" value may refer to a range from 90% to 110% of the value, inclusive.

[0065] In another implementation, for Mode 3 and Mode 4 UEs, the wireless node may configure some event-based CBR reports for a subset of UEs and / or periodic reports for another subset of UEs. Optionally, for Mode 3 and Mode 4 UEs, the wireless node (e.g., eNB or gNB) may configure a set of transmission parameters. The set of transmission parameters may be a list of transmission parameters associated with different CBR and packet priority combinations. The set of transmission parameters may include at least one or more of the following parameters: modulation and coding scheme (MCS); transport block size (TBS); transmit power (Tx power); number of subchannels; size of subchannel; or channel rate limit (cr-limit). In one implementation, the configuration of the configured grant type 1 resources may include a set of transmission parameters for indicating the transmission behavior using the configured grant type 1 resources. In another implementation, when the UE needs to perform data transmission, the UE may select a list of transmission parameters based on its measured CBR results and / or packet priority.

[0066] In one implementation, the set of transmission parameters may include one or more of the following parameters:

[0067]

[0068] In one implementation, the set of transmission parameters for the configured Grant Type 1 resources may be configured based on at least one of the following: the CBR value of the configured Grant Type 1 resources; or the packet priority of the UE's currently buffered data. In one implementation, the packet priority may be indicated by a default priority within the packet's Quality of Service (QoS) profile or an associated logical channel priority. In another implementation, the packet priority is determined based on the default priority in the Quality of Service (QoS) profile and the logical channel priority associated with the UE's data packet.

[0069] In another implementation, the UE may use the set of transmission parameters to determine how to select transmission parameters for data transmission. If the UE is configured with a set of transmission parameters. Then, the UE may use the set of transmission parameters to associate with at least one of the following CBRs on the configured grant or packet priority. The UE may determine its transmission parameter list for packet transmission. The transmission parameter list for packet transmission may include at least one of the following parameters: modulation and coding scheme (MCS); transport block size (TBS); transmit power (Tx power); number of subchannels; size of subchannels; or channel rate limit (cr-limit).

[0070] In another implementation, reference Figure 5E , the method 500 may further include step 550: the UE determines an MCS value for packet transmission. Figure 5F, the method 500 may further include step 560: the UE determines a cr limit value for packet transmission.

[0071] In another implementation, optionally, when the configured transmission parameters may not restrict the UE's use on the configured grant type 1. For example, the cr-limit may not be set to 0 and / or the transmit power may not be set to negative infinity. A wireless node (e.g., an eNB or gNB) may explicitly configure a list of CBR thresholds. The list of CBR thresholds may be associated with a list of packet priorities on the configured grant type 1. The list of CBR thresholds may be used by the UE to decide whether it is allowed to use the configured grant type 1 for packets with a specific priority. Optionally, when the UE is configured with multiple CBR thresholds associated with different packet priorities on the configured grant type 1, the UE may use the multiple configured CBR thresholds associated with its transmission packet priority to decide whether it can use the currently configured grant type 1 to send the corresponding packet.

[0072] In another implementation, the wireless node can optionally configure a set of packet priority-CBR thresholds for Mode 4 UEs, including different CBR and packet priority combinations. Then, when the UE has a packet to transmit, it can compare the configured CBR thresholds with its measured CBR value to decide whether to use the resource pool for data transmission.

[0073] In one example, the configuration may include a list of CBR thresholds, including: a first CBR threshold of 0.9 associated with a first packet priority of 1; a second CBR threshold of 0.8 associated with a second packet priority of 2; and a third CBR threshold of 0.7 associated with a third packet priority of 3. When the actual packet priority is 2, the corresponding CBR threshold may be determined to be 0.8 based on the CBR threshold list. Therefore, when the CBR measurement is lower than 0.8, the UE may use the configured Grant Type 1 to send packets with a packet priority of 2; and when the CBR measurement is higher than or equal to 0.8, the UE may not use the configured Grant Type 1 to send packets with a packet priority of 2.

[0074] In another implementation, reference Figure 5G , method 500 may further include step 570: when the measured CBR value is lower than the CBR threshold associated with the group priority of the current packet, the UE determines to use the configured authorization type 1; and step 572: when the measured CBR value is higher than the CBR threshold associated with the group priority of the current packet, the UE determines not to use the configured authorization type 1.

[0075] In another implementation, for NR V2X, NR V2X Mode 1 UEs, a UE may be configured with grant type 1 resources and / or grant type 2 resources. The configured grants (Type 1, Type 2) may provide a set of resources for multiple direct link transmissions in a periodic manner. The UE may decide which timeslot to transmit in each occasion indicated by a given configured grant.

[0076] In another implementation, when a Mode 1 NR V2X UE is in Radio Resource Control (RRC) Connected mode, it may send SidelinkUEInformation to a radio node (e.g., a gNB) to indicate its frequencies of interest, the intended service indicated as the destination ID, and the traffic mode to the gNB. Furthermore, the UE may report UEAssistanceInformation to the gNB to indicate its traffic mode for semi-persistent scheduling (SPS) services. Accordingly, the gNB may allocate a Mode 1 resource pool to the Mode 1 UE with transmission parameters via dedicated RRC signaling. Subsequently, when the UE has data to transmit, it may first send a BSR to the gNB to indicate information about the service, logical channel priority, and buffer size. Optionally, the gNB may allocate the configured Grant Type 1 resources to the UE via RRC signaling.

[0077] In another implementation, optionally, the resources of grant type 1 may be configured as an entire resource pool and configured to be associated with a frequency index.

[0078] In another implementation, optionally, the configured authorization type 1 resource may be configured as part of a resource pool and configured to be associated with a resource pool index.

[0079] In another implementation, optionally, the configured authorization type 1 may be configured as a mode 1 resource pool.

[0080] refer to Figure 6 , the present invention describes the signaling process for UE 691 to obtain resources of the configured grant type 1 via a wireless node 693 (e.g., gNB). In one implementation, UE 691 can be a Mode 1 UE.

[0081] In step 610, the Mode 1 NR V2X UE may be in RRC connected mode and may send Sidelink UE Information to the gNB. The Sidelink UE Information may indicate the frequency of interest, the intended service indicated as a destination ID, and the traffic mode sent to the gNB.

[0082] In step 620, the UE may report UE assistance information (UEAssistanceInformation) to the gNB. The UE assistance information may indicate the service mode of its SPS service.

[0083] In step 630, the gNB may allocate a Mode 1 resource pool to the Mode 1 UE with the transmission parameters via dedicated RRC signaling.

[0084] In step 640, when the UE has data to transmit, the UE may first send a buffer status report (BSR) to the wireless node to indicate information of the service, logical channel priority and buffer size.

[0085] Optionally, in step 650, the gNB may allocate configured grant type 1 resources to the UE via RRC signaling.

[0086] In another implementation, a wireless node (e.g., a gNB) may optionally allow multiple UEs to concurrently use the same configured Grant Type 1. To better understand the usage status of the configured Grant Type 1, the gNB may configure / request UEs to report CBR measurements on the resources of the configured Grant Type 1. In one implementation, the gNB may configure type1CbrMeasurementRequired within the configuration of the configured Grant Type 1. In another implementation, the gNB may independently configure type1CbrMeasurementRequired for each UE to indicate whether CBR measurements need to be performed and reported on the configured Grant Type 1 resources.

[0087] refer to Figure 4D The method 400 may further include step 440: before sending the resource grant to the UE, the wireless node sends a CBR enable flag to the UE, the CBR enable flag including a Boolean value. The CBR enable flag may include a value of "true" or "false" and may include a name of type1CbrMeasurementRequired.

[0088] refer to Figure 5H , method 500 may further include step 580: the UE determines a Boolean value of a CBR enable flag; step 582: in response to determining that the Boolean value of the CBR enable flag is true, the UE reports the CBR measurement to the wireless node; and step 584: in response to determining that the Boolean value of the CBR enable flag is false, the UE does not report the CBR measurement to the wireless node.

[0089] In another implementation, for reporting of CBR measurements for a configured grant type 1, a wireless node (e.g., a gNB) may configure the UE with a CBR enable flag, and if the CBR enable flag is true, the gNB may further configure the UE with event-based triggering conditions and / or periodic reporting. For example, when the UE is configured with a CBR enable flag (type1CbrMeasurementRequired) for resources configured for grant type 1 as true, the UE will perform CBR measurements for the configured grant type 1. Furthermore, when the triggering condition for CBR measurement reporting is configured as an event, the UE may report CBR measurements once the event is triggered. When the triggering condition for CBR measurement reporting is configured as periodic reporting, the UE may report CBR measurements for which new measurement results have become available since the last periodic report or since the measurement was initiated or reset.

[0090] The present invention provides another embodiment of configuring the user plane packet data convergence protocol (PDCP) protocol data unit (PDU) format. In NR V2X unicast, a pair of UEs may need to exchange PC5-S messages / signaling for unicast communication, such as direct communication request / accept messages, link identifier update request / response, link modification request / accept messages, etc. PC5-S messages can be sent over PC5 SRBs in a manner similar to PC5-RRC signaling. When the PC5-S message is transmitted directly to the PDCP layer (i.e., the PDCP entity associated with the SRB), the receiver side may not be able to distinguish whether the PDCP service data unit (SDU) (on the SRB) contains PC5-S signaling or PC5-RRC signaling. Therefore, it may not decide to deliver the PDCP SDU to the PC5 RRC layer or the PC5-S signaling protocol layer. The present invention describes some embodiments that solve at least some problems.

[0091] In one implementation, one or more designated dedicated LCIDs are used to carry PC5-S signaling to distinguish it from the SRBs of PC5 RRC signaling.

[0092] In another implementation, reference Figure 7A and 7B , an indication may be added to the control plane PDCP data PDU to indicate whether the corresponding PDCP SDU contains PC5-S signaling or PC5-RRC signaling. Figure 7A A user plane PDCP PDU format 710 is shown. Figure 7BThe first bit 751 in the control plane PDCP PDU format 710 is shown as an SDU type indicator, for example, a value of 1 ( / 01 / 001...) indicates PC5-S signaling, a value of 0 ( / 00 / 000...) indicates PC5-RRC signaling, and vice versa. In other implementations, any one or more bits (751, 752, and 753) can be used as an SDU type indicator.

[0093] This invention describes methods, devices, and computer-readable media for wireless communications. The invention addresses the problem of configuring CBR measurements. The methods, devices, and computer-readable media described herein can improve the performance of CBR measurement configuration. They can also reduce UE power consumption and the time required to configure CBR measurements, thereby improving efficiency and overall performance. The methods, devices, and computer-readable media described herein can improve the overall efficiency of wireless communication systems.

[0094] References throughout this specification to features, advantages, or similar language do not imply that all features and advantages that can be achieved with the present solution should be or are included in any single implementation thereof. Rather, language referring to features and advantages is understood to mean that a specific feature, advantage, or characteristic described in connection with an embodiment is included in at least one embodiment of the present solution. Thus, discussions of features and advantages, and similar language, throughout this specification may, but do not necessarily, refer to the same embodiment.

[0095] Furthermore, in one or more embodiments, the described features, advantages, and characteristics of the present solution may be combined in any suitable manner. Based on the description herein, one of ordinary skill in the relevant art will recognize that the present solution may be implemented without one or more of the specific features or advantages of a particular embodiment. In other instances, additional features and advantages may be identified in certain embodiments that may not be present in all embodiments of the present solution.

Claims

1. A wireless communication method, comprising: The wireless node configures a resource authorization for a user equipment UE, where the resource authorization includes authorization of a direct link resource of authorization type 1 configured for the UE; as well as The wireless node configures the UE, the configuration including a report request for a channel busy rate (CBR) measurement of a direct link resource configured for grant type 1, the configuration further including a CBR threshold list, wherein the CBR threshold list is associated with a list of packet priorities configured for grant type 1; The report request includes a report type of the CBR measurement of the direct link resource of the configured grant type 1, and the report type includes a CBR report of the direct link resource of the configured grant type 1 based on an event trigger, or a periodic report of the CBR report of the direct link resource of the configured grant type 1; In a case where the report type includes a CBR report of the direct link resources of the configured grant type 1 based on an event trigger, the wireless node receives the CBR measurement reported by the UE according to the occurrence of a preset event; in a case where the report type includes a periodic report of the CBR report of the direct link resources of the configured grant type 1, the wireless node receives the CBR measurement reported by the UE at fixed intervals.

2. The method according to claim 1, wherein: The wireless nodes include next generation NodeBs.

3. The method according to claim 1, wherein: The preset event includes a first event in which the CBR measurement is greater than a preset high threshold.

4. The method according to claim 1, wherein: The preset event includes a second event in which the CBR measurement is lower than a preset low threshold.

5. The method according to claim 1, wherein: The fixed interval of the periodic reporting is configured by the wireless node.

6. The method according to claim 1, wherein: The configuration of the configured direct link resource of grant type 1 includes a set of transmission parameters for indicating a transmission behavior using the configured direct link resource of grant type 1.

7. The method according to claim 6, wherein: The set of transmission parameters for the configured direct link resources of grant type 1 includes a modulation and coding scheme (MCS).

8. The method according to claim 7, wherein: The set of transmission parameters for the direct link resources of the configured grant type 1 further includes a transport block size TBS, a transmission power Tx power, a number of subchannels, a subchannel size, and a channel rate limit.

9. The method according to any one of claims 6 to 8, wherein The set of transmission parameters for the direct link resource of the grant type 1 is configured based on the grouping priority of the current buffered data of the UE.

10. The method according to any one of claims 6 to 8, wherein: The set of transmission parameters of the direct link resource of the grant type 1 is configured based on the CBR measurement value of the currently configured grant type 1.

11. The method according to claim 10, wherein: The packet priority is determined based on a default priority in a Quality of Service (QoS) document and a logical channel priority associated with a data packet of the UE.

12. The method of claim 1, wherein: The configured direct link resources of grant type 1 are configured as the entire resource pool and are configured to be associated with a frequency index.

13. The method of claim 1, wherein: The configured direct link resource of authorization type 1 is configured as part of a resource pool and is configured to be associated with a resource pool index.

14. The method according to claim 1, further comprising: Before sending the resource grant to the UE, the wireless node sends a CBR enable flag to the UE, where the CBR enable flag includes a Boolean value.

15. The method according to claim 14, wherein: The CBR enable flag includes type 1 CbrMeasurementRequired.

16. A method for wireless communication, comprising: The user equipment UE receives a resource grant from a wireless node, where the resource grant includes an authorization for a direct link resource of the authorization type 1 configured for the UE, so that the UE uses the direct link resource of the configured authorization type 1; as well as The UE receives a configuration from the wireless node, the configuration including a report request for a channel busy rate (CBR) measurement of a direct link resource of the configured grant type 1, the configuration further including a CBR threshold list, wherein the CBR threshold list is associated with a list of packet priorities on the configured grant type 1; The report request includes a report type of the CBR measurement of the direct link resource of the configured grant type 1, and the report type includes a CBR report of the direct link resource of the configured grant type 1 based on an event trigger, or a periodic report of the CBR report of the direct link resource of the configured grant type 1; In a case where the report type includes a CBR report of the direct link resources of the configured grant type 1 based on an event trigger, the UE reports the CBR measurement to the wireless node according to the occurrence of a preset event; in a case where the report type includes a periodic report of the CBR report of the direct link resources of the configured grant type 1, the UE reports the CBR measurement to the wireless node at a fixed interval.

17. The method according to claim 16, further comprising: The UE reports a CBR measurement of the direct link resource of the configured grant type 1 to the wireless node based on the report request.

18. The method of claim 16, wherein: The preset event includes at least one of the following: The first event where the CBR measurement is greater than a preset high threshold; or The second event that the CBR measurement falls below a preset low threshold.

19. The method of claim 16, wherein: The configuration of the configured direct link resource of grant type 1 includes a set of transmission parameters for indicating a transmission behavior using the configured direct link resource of grant type 1.

20. The method according to claim 19, wherein The set of transmission parameters for the configured direct link resource of grant type 1 includes a modulation and coding scheme (MCS); as well as The method further comprises: The UE determines an MCS value for packet transmission.

21. The method according to claim 20, wherein The set of transmission parameters for the configured direct link resources of grant type 1 further includes a channel rate limit; and The method further comprises: The UE determines a channel rate limit value for packet transmission.

22. The method of claim 19, further comprising: For a data packet with a packet priority, the UE determines the list of transmission parameters for the data packet based on the set of transmission parameters for the direct link resource of the configured grant type 1, a CBR measurement, and the packet priority.

23. The method of claim 22, wherein: The packet priority is determined based on a default priority in a Quality of Service (QoS) document and a logical channel priority associated with a data packet of the UE.

24. The method according to claim 16, The method further comprises: When the measured CBR value is lower than the CBR threshold associated with the packet priority of the current packet, the UE determines to use the configured grant type 1; as well as When the measured CBR value is higher than the CBR threshold associated with the packet priority of the current packet, the UE determines not to use the configured Grant Type 1.

25. The method of claim 16, wherein: The configured direct link resources of grant type 1 are configured as the entire resource pool and are configured to be associated with a frequency index.

26. The method of claim 16, wherein: The configured direct link resource of authorization type 1 is configured as part of a resource pool and is configured to be associated with a resource pool index.

27. The method of claim 16, further comprising: Prior to receiving the resource grant from the wireless node, the UE receives a CBR enable flag from the wireless node, the CBR enable flag comprising a Boolean value.

28. The method according to claim 27, further comprising: Determining, by the UE, the Boolean value of the CBR enable flag; In response to determining that the Boolean value of the CBR enable flag is true, the UE reports a CBR measurement to the wireless node; and In response to determining that the Boolean value of the CBR enable flag is false, the UE does not report CBR measurements to the wireless node.

29. The method of claim 27, wherein: The CBR enable flag includes type 1 CbrMeasurementRequired.

30. A wireless communication device comprising a processor and a memory, wherein: The processor is configured to read code from the memory and implement the method of any one of claims 1 to 29.

31. A computer program product comprising computer readable program code stored thereon, which, when executed by a processor, causes the processor to implement the method of any one of claims 1 to 29.

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