WO2022155774A1 - 资源抢占处理方法、通信设备及可读存储介质 - Google Patents
资源抢占处理方法、通信设备及可读存储介质 Download PDFInfo
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Definitions
- the present application relates to the field of communications, and in particular, to a resource preemption processing method, a communication device, and a readable storage medium.
- a wireless communication system utilizes Frequency Division Duplex (FDD) or Time Division Duplex (TDD) for data transmission between a base station and a User Equipment (UE).
- FDD Frequency Division Duplex
- TDD Time Division Duplex
- channels with different frequencies are used for uplink and downlink, and user equipment can simultaneously transmit data on the uplink and downlink channels.
- the same frequency channel is used for uplink and downlink, so the transmission time line in the system is divided into uplink transmission time and downlink transmission time.
- the FDD duplex mode can be further divided into full-duplex FDD (Full-Duplex FDD) and half-duplex FDD (Half-Duplex FDD, HD-FDD).
- HD-FDD has the characteristics of FDD and TDD, that is, uplink Channels with different frequencies are used for the downlink and uplink, but the uplink and downlink transmission times are staggered.
- the fifth generation mobile communication system includes three major application scenarios, namely Enhanced Mobile Broadband (eMBB: Enhanced Mobile Broadband), Massive Machine Type Communication (mMTC: Massive Machine Type Communication) and Low Latency and High Reliability (URLLC: Ultra-reliable low-latency communication).
- eMBB Enhanced Mobile Broadband
- mMTC Massive Machine Type Communication
- URLLC Ultra-reliable low-latency communication
- URLLC has two basic characteristics, namely high reliability and low delay, such as BLER performance of the order of 10-5 or 10-6 , and air interface transmission delay of 0.5ms or 1ms.
- URLLC will provide services for latency0-sensitive devices, which can be called URLLC devices.
- URLLC devices and non-URLLC devices can coexist.
- the downlink preemption mechanism of URLLC is pointed out in R15.
- the downlink preemption (Pre-emption Indication, PI) indication mechanism is used to notify the user equipment of the position of the preempted resources. Therefore, the user equipment can receive the PI indication, and remove the preempted resources in the received data according to the PI indication, thereby eliminating the influence of the preempted resources and realizing successful decoding.
- PI Pre-emption Indication
- PUCCH is a physical uplink control channel (Physical uplink control channel)
- PDSCH is a physical downlink share channel (Physical Downlink Share Channel).
- some resources in PDSCH are preempted by URLLCUE, so it is necessary to pass PUCCH after PDSCH
- the PI indication is transmitted to the UE corresponding to the preempted resource, so that the UE preempted with the resource can remove the resource at the preempted position according to the PI indication, so as to achieve successful decoding.
- HD-FDDUE half-duplex user equipment
- HD-FDDUE can only receive or send messages at the same time, and cannot be parallelized, so there may be HD-FDDUE receiving data that has been punched (preempted resources), but then HD-FDDUE -
- the FDDUE switches to the uplink (UL) and cannot monitor the PI indication sent by the base station, so it cannot know the occupied resources and the location of the occupied resources.
- the HD-FDDUE has already received the data on the time-frequency resources together, Then decode, because the received data contains URLLC user data, resulting in decoding error, resulting in retransmission, and because its HARQ (Hybrid automatic repeat request, hybrid automatic repeat request) cache is polluted by URLLC user data, even if HARQ is retransmitted multiple times , soft merging of different redundancy versions may still lead to decoding errors, which affects the reliability of non-URLLCUE data transmission and waste of resources.
- HARQ Hybrid automatic repeat request, hybrid automatic repeat request
- the technical problem mainly solved by this application is to provide a resource preemption processing method, a communication device and a readable storage medium, which can solve the problems of low reliability of user equipment data transmission and waste of resources in the prior art.
- a first aspect of the present application provides a method for processing resource preemption.
- the method is applied to the base station side, and the method includes: acquiring information about the URLLC burst service of ultra-reliable and low-latency communication; skipping to be the first user
- the radio resources allocated by the device are determined to be preempted by the URLLC burst service allocation, and the first user equipment does not allow the resources to be occupied by the URLLC burst service.
- a second aspect of the present application provides a resource preemption processing method, the method is applied to the user equipment side, and the method includes: sending user equipment information to a base station, where the user equipment information is used to indicate that the user equipment does not allow resources Occupied by URLLC burst service.
- a third aspect of the present application provides a communication device, the device includes a processor, a memory and a communication circuit, the processor is connected to the communication circuit; the memory stores instructions, and the processor is used to execute the instructions to implement the application as described in the present application.
- the resource preemption processing method provided by the first aspect.
- a fourth aspect of the present application provides a communication device, the device includes a processor, a memory and a communication circuit, the processor is connected to the communication circuit; the memory stores instructions, and the processor is used to execute the instructions to implement the application as described in the present application.
- the resource preemption processing method provided by the second aspect.
- the present application provides a readable storage medium storing instructions, and when the instructions are executed by a processor, the foregoing method for processing resources preemption is implemented.
- the base station obtains the information of the ultra-reliable and low-latency communication URLLC burst service; skips the radio resources allocated for the first user equipment and determines the preempted radio resources for the URLLC burst service, wherein, by setting the first user equipment A user equipment does not allow resources to be occupied by the URLLC burst service, and can no longer allocate the radio resources allocated for the first user equipment to the URLLC burst service, thereby avoiding the data of the first user equipment from being mixed with the data of the URLLC burst service
- the resulting decoding error makes it unnecessary to perform HARQ retransmission, or even multiple HARQ retransmissions, which ensures the reliability of data transmission of the first user equipment and reduces waste of resources.
- Fig. 1 is a schematic diagram of FDD, HD-FDD and FDD in the prior art
- FIG. 2 is a schematic diagram of a post-preemption indication mechanism in the prior art
- FIG. 3 is a schematic structural diagram of an embodiment of a wireless communication system or network of the present application.
- FIG. 5 is a schematic flowchart of the second embodiment of the resource preemption processing method of the present application.
- FIG. 6 is a schematic flowchart of the third embodiment of the resource preemption processing method of the present application.
- FIG. 7 is a schematic diagram of the first embodiment of multi-terminal interaction in the resource preemption processing method of the present application.
- FIG. 8 is a schematic flowchart of a fourth embodiment of a resource preemption processing method of the present application.
- FIG. 9 is a schematic flowchart of a fifth embodiment of a resource preemption processing method of the present application.
- Fig. 10 is a schematic diagram of downlink preemption indication
- Fig. 11 is a schematic diagram of the correspondence between each bit of the preemption indication and the symbol
- FIG. 12 is a schematic flowchart of the sixth embodiment of the resource preemption processing method of the present application.
- FIG. 13 is a schematic diagram of a second embodiment of multi-terminal interaction in the resource preemption processing method of the present application.
- 15 is a schematic flowchart of the eighth embodiment of the resource preemption processing method of the present application.
- Fig. 16 is a schematic diagram of MACCE of the present application.
- FIG. 17 is a schematic flowchart of the eighth embodiment of the resource preemption processing method of the present application.
- FIG. 18 is a schematic diagram of a third embodiment of multi-terminal interaction of the resource preemption processing method of the present application.
- 19 is a schematic structural diagram of the first embodiment of the communication device of the present application.
- FIG. 20 is a schematic structural diagram of a second embodiment of a communication device of the present application.
- FIG. 21 is a schematic structural diagram of an embodiment of a readable storage medium of the present application.
- User equipment in this application may include or represent any portable computing device used for communication.
- Examples of user equipment that may be used in certain embodiments of the described devices, methods and systems may be wired or wireless devices such as mobile devices, mobile phones, user equipment, smart phones, portable computing devices, such as laptops Computers, handheld devices, tablets, tablets, netbooks, personal digital assistants, music players, and other computing devices capable of wired or wireless communication.
- the user equipment may also be a reduced capability (Reduced Capability) user equipment.
- FIG. 3 is a diagram of a plurality of network nodes 104a-104m (eg, base stations) comprising a core network 102 (or telecommunications infrastructure) with cells 106a-106m serving a plurality of wireless communication units 108a-108e (eg, UEs)
- a schematic diagram of a wireless communication system or network 100 of a gNB A plurality of network nodes 104a-104m are connected to the core network 102 by links. These links may be wired or wireless (eg, radio communication links, fiber optics, etc.).
- Core network 102 may include multiple core network nodes, network entities, application servers, or any other network or computing device that may communicate with one or more radio access networks including multiple network nodes 104a-104m.
- the network nodes 104a-104m are illustrated as base stations, which may be gNBs in a 5G network, for example but not limited to.
- Each of the plurality of network nodes 104a-104m (eg, base stations) has a footprint, which is schematically represented in Figure 3 for simplicity and by way of example and not limitation for serving one or more UEs 108a
- UEs 108a-108e can receive services from wireless communication system 100, such as voice, video, audio, or other communication services.
- the wireless communication system or network 100 may include or represent any one or more communication networks used for communication between UEs 108a-108e and other devices, content sources, or servers connected to the wireless communication system or network 100.
- Core network 102 may also include or represent one or more communication networks, one or more network nodes, entities, elements, application servers, servers, base stations or other links, coupled or connected to form wireless communication system or network 100 Network equipment. Links or couplings between network nodes may be wired or wireless (eg, radio communication links, fiber optics, etc.).
- the wireless communication system or network 100 and core network 102 may include any suitable combination of a core network and a wireless access network comprising network nodes or entities, base stations, access points, etc. that enable UEs 108a-108e, wireless communication system 100 and Communication between network nodes 104a-104m of core network 102, content sources, and/or other devices connected to system or network 100 is enabled.
- An example of a wireless communication network 100 may be at least one communication network or a combination thereof including, but not limited to, one or more wired and/or wireless telecommunications networks, a core network(s), radio access network(s), computer network(s), data communication network(s), internet, telephone network, wireless network, such as WiMAX based on the IEEE 802.11 standard by way of example only , WLAN and/or Wi-Fi network, or Internet Protocol (Internet Protocol, IP) network, packet-switched network or enhanced packet-switched network, IP Multimedia Subsystem (IP Multimedia Subsystem, IMS) network or based on wireless, cellular or satellite Technical communication networks, such as mobile networks, Global System for Mobile Communications (GSM), GPRS networks, Wideband Code Division Multiple Access (W-CDMA), CDMA2000 or LTE/Advanced LTE communication network or any 2nd, 3rd, 4th or 5th generation and beyond type of communication network etc.
- GSM Global System for Mobile Communications
- W-CDMA Wideband Code Division Multiple Access
- the wireless communication system 100 may be, by way of example only and not limited to, cyclic prefix orthogonal frequency division multiplexing (CP- 5G communication network using OFDM) technology.
- the downlink may include one or more communication channels for transmitting data from one or more gNBs 104a-104m to one or more UEs 108a-108e.
- a downlink channel is a communication channel used to transmit data, eg, from gNB 104a to UE 108a.
- each frame may be 10ms in length
- each frame may be divided into multiple subframes.
- each frame may include 10 subframes of equal length, where each subframe consists of multiple time slots (eg, 2 time slots) for transmitting data.
- time slots e.g, 2 time slots
- a subframe may include several additional special fields or OFDM symbols, which may include, by way of example only, downlink synchronization symbols, broadcast symbols and/or uplink reference symbols.
- FIG. 4 is a schematic flowchart of the first embodiment of the resource preemption processing method of the present application.
- the first embodiment of the resource preemption processing method includes:
- Step S11 Obtain the information of the ultra-reliable and low-latency communication URLLC burst service.
- This embodiment is applied to the base station side.
- the data characteristics of URLLC low-latency scenarios are mainly bursty but not large, so NR supports URLLC to occupy channel resources by preemption.
- the base station allocates physical resources to the eMBB service
- the resources of the eMBB service are also allocated to the URLLC service.
- the URLLC preempts the physical resources, the NR notifies the UE of the preemption result to ensure the low latency requirement of the URLLC.
- the user equipment corresponding to the URLLC burst service is called URLLCUE.
- the base station When the base station obtains the information of the URLLC burst service of ultra-reliable and low-latency communication, it needs to allocate radio resources for the URLLC burst service.
- the allocated radio resources here can be the radio resources that are not occupied by the user equipment, or have been occupied by the user equipment. wireless resources.
- Step S12 Skip the radio resources allocated for the first user equipment and determine the preempted radio resources for the URLLC burst service, and the first user equipment does not allow the resources to be occupied by the URLLC burst service.
- the first user equipment does not allow resources to be occupied by the URLLC burst service.
- the base station needs to allocate preempted radio resources for the URLLC burst service, the base station skips the radio resources allocated for the first user equipment and determines that it is the URLLC burst service.
- the preempted radio resources are allocated by the sending service, thereby ensuring the integrity of the radio resources allocated for the first user equipment.
- the radio resources allocated for the first user equipment are not occupied by the URLLC burst service, decoding errors caused by mixing interference data (data of the URLLC service) into the user data of the first user equipment are avoided, and no HARQ is required.
- Retransmission even multiple HARQ retransmissions, ensures the reliability of data transmission of the first user equipment and avoids wasting resources.
- the first user equipment may be a half-duplex user equipment, such as a safety sensor (safety switch, safety light grid, safety door system).
- Half-duplex user equipment (HD-FDD UE) adopts the HD-FDD operation mode, and can only receive or send messages at the same time, and cannot be parallelized, so although the system is provided with a downlink preemption indication mechanism, since the PI indication is a post-indication method ( As shown in Figure 2, that is, after occupying resources, the PI indication is sent again), hereinafter referred to as the post-PI indication.
- the base station issues the PI indication, if the user equipment is in the uplink state, it can only send messages.
- the user equipment cannot receive the PI indication, which may affect the reliability of data transmission of the half-duplex user equipment. Therefore, for such devices such as half-duplex user equipment, it is set to not allow resources to be occupied by the URLLC burst service. , so that the impact of the URLLC burst service can be avoided, and the reliability of the data transmission of the half-duplex user equipment can be guaranteed.
- the first user equipment may be a reduced capability (Reduced Capability) user equipment, referred to as a RedCap UE for short.
- RedCap UE can include three types of devices, namely industrial wireless sensors, video surveillance devices in smart cities, and wearable devices.
- industrial wireless sensors include pressure sensors, humidity sensors, thermometers, motion sensors, accelerometers, actuators, etc.
- video surveillance equipment in smart cities includes access control equipment, traffic video surveillance equipment, etc.
- wearable devices include smart watches, hand Rings, rings, electronic health related equipment, medical monitoring equipment, etc.
- RedCap UEs are relatively small in size, and do not require very high bandwidth and peak rate.
- the RedCap UE may adopt the HD-FDD operation mode, and the RedCap UE adopting the HD-FDD operation mode is also the HD-FDD UE.
- the first user equipment may specifically not allow uplink resources and/or downlink resources to be occupied by the URLLC burst service. Specifically, the first user equipment does not allow uplink resources to be occupied by URLLC burst services, or the first user equipment does not allow downlink resources to be occupied by URLLC burst services, or the first user equipment does not allow uplink resources and downlink resources to be occupied by URLLC burst services business occupancy. It can be understood that the resource preemption processing method provided by this application can be applied not only to the downlink preemption mechanism in the URLLC service, but also to the uplink cancellation mechanism in the URLLC service, that is, the URLLC device cannot preempt the uplink resources of the first user equipment.
- the base station obtains the information of the ultra-reliable and low-latency communication URLLC burst service; skips the radio resources allocated for the first user equipment to determine the preempted radio resources for the URLLC burst service, wherein by setting the first user equipment
- the device does not allow resources to be occupied by the URLLC burst service, and can no longer allocate the wireless resources allocated for the first user equipment to the URLLC burst service, so as to avoid the data of the first user equipment being mixed with the data of the URLLC burst service. Therefore, it is unnecessary to perform HARQ retransmission, or even multiple HARQ retransmissions, which ensures the reliability of data transmission of the first user equipment and reduces waste of resources.
- FIG. 5 is a schematic flowchart of a second embodiment of a method for processing resource preemption of the present application.
- the second embodiment of the resource preemption processing method includes:
- Step S21 Obtain the information of the ultra-reliable and low-latency communication URLLC burst service.
- Step S22 Acquire information of the first user equipment.
- Step S23 Determine according to the information of the first user equipment that the first user equipment does not allow resources to be occupied by the URLLC burst service.
- Steps S22-S23 and S21 do not have a certain sequence.
- steps S22-S23 may be executed after step S21.
- steps S22-S23 may be executed before or at the same time as step S21. There are no restrictions.
- the information of the first user equipment may include capability information (UE capability) of the first user equipment.
- the capability information of the first user equipment may include an identifier used to indicate that the first user equipment does not allow resources to be occupied by the URLLC burst service.
- the capability information of the first user equipment must include an identifier indicating that the first user equipment does not allow resources to be occupied by the URLLC burst service, so that when the base station obtains the capability information of the first user equipment, it can directly It is determined that the first user equipment does not allow resources to be occupied by the URLLC burst service.
- the capability information of the first user equipment may include an identifier indicating that the first user equipment does not allow resources to be occupied by the URLLC burst service.
- the base station After it is determined that the first user equipment does not allow the resource to be occupied by the URLLC burst service, it can be determined that the first user equipment does not allow the resource to be occupied by the URLLC burst service.
- the information of the first user equipment can be carried by the radio access control RRC message, or can be transmitted by using special resources in the random process, such as MSG1/MSGA, which can specifically be the individual initial UL BWP, individual preamble and individual MSG1/MSGA. At least one of the Prach occurrences.
- the radio access control RRC message may include RRCSetupComplete, RRCReconfigurationComplete, RRCReestablishmentComplete, UEcapabilityInformation and other messages.
- the first user equipment may actively report capability information, and the base station receives the capability information actively reported by the first user equipment, and judges whether the capability information includes a feature indicating that the first user equipment does not allow resources to be occupied by the URLLC burst service. If the identifier is included, it can be determined that the first user equipment is not allowed to be occupied by the URLLC burst service; if it is not included, it can be determined that the first user equipment is allowed to be occupied by the URLLC burst service.
- the base station may actively acquire capability information of the first user equipment.
- the information of the first user equipment may include capability type identifiers and/or device type identifiers, and the capability type identifiers and/or device type identifiers may be used to indicate that the first user equipment does not allow the resource to be subjected to URLLC burst services.
- the capability type identifier may include radio access-related capabilities and core network-related capabilities, and may specifically be the capability type included in the UE capability information.
- the device type identifier may include, but is not limited to, a half-duplex user equipment identifier (such as an HD-FDD UE) and a duplex user equipment identifier (such as an FDD UE), where the HD-FDD UE is used to represent the first user.
- the device does not allow resources to be occupied by the URLLC burst service, and the FDD UE is used to indicate that the first user equipment allows resources to be occupied by the URLLC burst service.
- the base station may determine, based on the HD-FDD UE, that the first user equipment does not allow resources to be occupied by the URLLC burst service.
- the device type identifier may include, but is not limited to, Redcap UE and regular NR UE, where Redcap UE is used to indicate that the first user equipment does not allow resources to be occupied by the URLLC burst service, and regular NR UE is used to indicate that the first user equipment The device allows resources to be occupied by the URLLC burst service.
- the base station may determine, based on the Redcap UE, that the first user equipment does not allow resources to be occupied by the URLLC burst service.
- Redcap UE can also include multiple sub-device type identifiers, such as wireless sensor identifiers, video surveillance equipment identifiers, and wearable device identifiers.
- Redcap UEs not all Redcap UEs have high performance requirements, and some Redcap UEs with low performance requirements may allow resources to be occupied by URLLC burst services, while Redcap UEs with low performance requirements may not allow resources to be occupied by URLLC Unexpected business occupancy.
- the device type identifier is Redcap UE-1, it represents a UE with low performance requirements (such as a smart bracelet), then the UE can allow resources to be occupied by the URLLC burst service; the device type identifier is Redcap UE-2, which represents a high performance requirement.
- UE such as a security sensor or high-end video surveillance equipment
- the UE may not allow resources to be occupied by the URLLC burst service.
- the information of the first user equipment includes a dedicated identifier used to indicate that the first user equipment does not allow resources to be occupied by the URLLC burst service.
- the dedicated identity may be carried by a radio access control RRC message.
- the dedicated identifier can be selected according to the actual situation, which is not limited here, as long as it can be used to indicate that the first user equipment does not allow resources to be occupied by the URLLC burst service.
- Step S24 Skip the radio resources allocated for the first user equipment and determine to allocate preempted radio resources for the URLLC burst service.
- the base station determines that the first user equipment does not allow resources to be occupied by the URLLC burst service, it can skip the radio resources allocated for the first user equipment and determine to allocate the preempted radio resources for the URLLC burst service, that is, the first user equipment will not be occupied by the URLLC burst service.
- the allocated radio resources are allocated to the URLLC burst service; if the base station determines that the first user equipment allows resources to be occupied by the URLLC burst service, the radio resources allocated to the first user equipment may be determined as the preempted radio resources for the URLLC burst service allocation .
- the base station obtains the information of the first user equipment, and determines according to the information of the first user equipment that the first user equipment does not allow resources to be occupied by the URLLC burst service, so that the URLLC burst service of ultra-reliable and low-latency communication can be obtained before the URLLC burst service is obtained.
- information skip the radio resources allocated for the first user equipment and determine to allocate preempted radio resources for the URLLC burst service, wherein whether the resources of the first user equipment can be occupied by the URLLC burst service can be determined through the information of the first user equipment
- the reliability of data transmission is not affected. If not, it can be determined that the first user equipment does not allow resources to be occupied by the URLLC burst service, thereby ensuring the reliability of data transmission of the first user equipment.
- FIG. 6 is a schematic flowchart of a third embodiment of a method for processing resource preemption of the present application.
- the third embodiment of the resource preemption processing method includes:
- Step S31 Send user equipment information to the base station, where the user equipment information is used to indicate that the user equipment does not allow resources to be occupied by the URLLC burst service.
- This embodiment is applied to the user equipment side.
- the user equipment sends the user equipment information to the base station, where the user equipment information is used to indicate that the user equipment does not allow resources to be occupied by the URLLC burst service, so that the base station determines based on the user equipment information that the user equipment does not allow the resources to be occupied by the URLLC burst service, thereby skipping as follows.
- the radio resources allocated by the user equipment are determined to be preempted by the URLLC burst service allocation.
- the user equipment may be a half-duplex user equipment and/or a reduced capability user equipment.
- the user equipment does not allow uplink resources and/or downlink resources to be occupied by the URLLC burst service.
- the user equipment information may include capability information of the user equipment, and the capability information of the user equipment may include an identifier used to indicate that the user equipment does not allow resources to be occupied by the URLLC burst service.
- the user equipment information may include a dedicated identifier for indicating that the user equipment does not allow resources to be occupied by the URLLC burst service.
- the dedicated identity may be carried by a radio access control RRC message.
- the user equipment in this embodiment is similar to the first user equipment in the previous embodiment.
- the user equipment sends the user equipment information to the base station, and the user equipment information is used to indicate that the user equipment does not allow the resource to be occupied by the URLLC burst service, so that the base station determines based on the user equipment information that the user equipment does not allow the resource to be occupied by the URLLC burst service
- the service is occupied, and the radio resources allocated for the user equipment are skipped to determine the preempted radio resources for the URLLC burst service, so as to avoid decoding errors caused by mixing the data of the URLLC burst service into the data of the first user equipment.
- HARQ retransmission, or even multiple HARQ retransmissions is performed, which ensures the reliability of data transmission of the first user equipment and reduces waste of resources.
- FIG. 7 is a schematic diagram of a first embodiment of multi-terminal interaction in a method for processing resource preemption of the present application.
- the base station obtains the information of the ultra-reliable and low-latency communication URLLC burst service.
- the first user equipment (UE1) sends the information of the first user equipment to the base station.
- the base station receives the information of the first user equipment.
- the base station determines, according to the information of the first user equipment, that the first user equipment does not allow resources to be occupied by the URLLC burst service.
- the base station skips the radio resources allocated for the first user equipment and determines to allocate preempted radio resources for the URLLC burst service, and the first user equipment does not allow resources to be occupied by the URLLC burst service.
- FIG. 8 is a schematic flowchart of a fourth embodiment of a method for processing resource preemption of the present application.
- the fourth embodiment of the resource preemption processing method includes:
- Step S41 It is determined that at least part of the downlink resources allocated to the user equipment in the first time unit are preempted.
- the user equipment may be a half-duplex user equipment and/or a reduced capability user equipment.
- the time unit may be a time slot (Slot), then the second time unit may be the previous time slot of the first time unit, or may be the first N time slots of the first time unit, where N is a positive integer .
- At least part of the downlink resources allocated to the user equipment in the first time unit may be preempted by the URLLC burst service of the URLLC UE.
- the URLLC UE preempts the downlink resources of the HD-FDD UE, and the preemption timing is when at least one control resource set CORESET time domain period corresponding to the preempted resources has not yet started.
- Using the pre-PI scheme of this embodiment can solve the problem of large Some HD-FDD UEs cannot receive abnormal conditions indicated by PI.
- Step S42 Send a preemption indication to the user equipment in the second time unit, the second time unit is before the first time unit, and the preemption indication is used to indicate that at least part of the downlink resources allocated to the user equipment in the first time unit are preempted.
- the base station When the base station determines that the URLLC burst service preempts at least part of the downlink resources allocated to the HD-FDD UE in the first time unit, the base station sends a preemption indication to the user equipment in the second time unit before the first time unit (preamble PI indication) to indicate that at least part of the downlink resources allocated to the user equipment in the first time unit is preempted, and indicate the location of at least part of the preempted downlink resources, so that the user equipment can eliminate the influence of the preempted resources.
- a preemption indication to the user equipment in the second time unit before the first time unit (preamble PI indication) to indicate that at least part of the downlink resources allocated to the user equipment in the first time unit is preempted, and indicate the location of at least part of the preempted downlink resources, so that the user equipment can eliminate the influence of the preempted resources.
- the base station may not distinguish user equipments, that is, for all user equipments, send a preemption indication to the user equipments in the second time unit. In other embodiments, the base station may distinguish user equipments, and only use the second time unit to send a preemption instruction to the user equipment for user equipments such as half-duplex user equipment that cannot receive the post-PI indication.
- the user equipment can successfully receive the PI in the second time unit regardless of whether the user equipment is in the uplink state in the time unit after the first time unit Indicates that at least part of the downlink resources allocated to the user equipment in the first time unit are preempted, so that decoding errors caused by mixing preempted resources into the data of the user equipment can be avoided, and no HARQ retransmission is necessary, or even more
- the secondary HARQ retransmission ensures the reliability of data transmission of the first user equipment and reduces waste of resources.
- FIG. 9 is a schematic flowchart of the fifth embodiment of the resource preemption processing method of the present application
- FIG. 10 is a schematic diagram of a downlink preemption indication
- FIG. 11 is a corresponding relationship between bits and symbols of the preemption indication A schematic diagram.
- the fifth embodiment of the resource preemption processing method includes:
- Step S51 It is determined that at least part of the downlink resources allocated to the user equipment in the first time unit are preempted.
- Step S52 Determine whether the user equipment is in an uplink state in a third time unit, and the third time unit is after the first time unit.
- step S53 If yes, go to step S53, otherwise go to step S54.
- step S52 and step S51 do not have a certain sequence relationship.
- step S52 may be executed after step S51.
- step S52 may be executed before or at the same time as step S51, which is not performed here. limited.
- the time unit may be a time slot (Slot), then the third time unit may be the next time slot of the first time unit, or may be the next N time slots of the first time unit, where N is a positive integer .
- the base station can determine, according to the uplink and downlink time allocation of the user equipment, whether the user equipment can receive the PI indication before switching to the uplink state, so as to determine whether the preamble PI indication is required according to the result.
- the base station determines whether the user equipment is in the uplink state in the third time unit, and if so, it means that the user equipment cannot successfully receive the post-PI indication in the third time unit, so it needs to send a preemption instruction to the user equipment in the second time unit in advance , so that the user equipment successfully receives the PI indication; if not, it means that the user equipment can successfully receive the post-PI indication in the third time unit, so that the PI indication does not need to be prepended, and can still be sent to the user equipment in the third time unit Preemption instructions.
- Step S53 Send a preemption indication to the user equipment in the second time unit.
- Step S54 The preemption instruction is not sent in the second time unit but is sent in the third time unit.
- the second time unit is before the first time unit
- the preemption indication is used to indicate that at least part of the downlink resources allocated to the user equipment in the first time unit are preempted.
- the preemption indication may include a first indicator, and the first indicator is used to indicate that the preemption indication is before or after the first time unit.
- the size of the first indicator may be 1 bit or multiple bits.
- the first indicator is Pre-Ind (1 bit)
- the size is 1 bit
- its value is 1 to indicate a pre-PI indication
- its value is 0 to indicate a post-PI indication.
- the base station sends a preemption indication to the user equipment
- the user equipment receives the preemption indication, and determines whether the first indicator is included, and if the first indicator is included, determines that the first time unit has been allocated to the user equipment. At least part of the downlink resources are preempted, and if the first indicator is not included, it is determined that at least part of the downlink resources allocated to the user equipment in the first time unit are not preempted.
- the method may further include: sending a preemption indication to the user equipment in a third time unit, where the third time unit is after the first time unit.
- the downlink preemption indication is post-positioned.
- the PI indication is prepended.
- the base station can still The preemption indication is sent to the user equipment in the third time unit.
- the preemption indication may be included in downlink control information (Downlink Control Information, DCI) in a dedicated format, and the DCI in the dedicated format may specifically be DCI format 2_1.
- DCI Downlink Control Information
- the base station may schedule DCI format 2_1 and other normally scheduled DCIs, and multiple DCIs may be located in different search spaces Searchspaces of the same CORESET; or in different CORESETs middle.
- the base station can send a PI indication to the user equipment through multicast, and the PI indication is carried in the DCI format 2_1 to notify the user equipment of resources preempted in an RDR (Reference DL Region).
- DCI format 2_1 is Group-common DCI
- the maximum payloadSize is 126bit
- each segment of 14bit corresponds to a UE PI
- scrambled by INT_RNTI
- the preemption indication/configuration is in DownlinkPreemption.
- the URLLC service occupies a large bandwidth in the frequency domain. Therefore, the data of one URLLC user may occupy the time-frequency resources of the data of multiple non-URLLC UEs.
- the PI indication can be carried in the group-common In the DCI format of , it is more efficient to notify a group of user equipment resources that are preempted by the URLLC service.
- the preemption indication can be included in the DCI used to control the user equipment, that is, it can be extended in the existing DCI to add a PI indication (14bit), specifically, it can be added before the DCI used to control the user equipment.
- Set the indication bits indicated by PI such as DCI 0_x, 1_x
- PI indication 14bit
- the PI indication can be optionally configured, and not all user equipments need to be configured.
- the PI indication in the DCI for controlling the user equipment can be set according to the location of the preempted resources. , or only when it is determined that the user equipment cannot receive the PI indication in time, the PI indication in the DCI for controlling the user equipment is set to indicate the preempted resource information.
- the user equipment determines the DCI 0_x to be detected according to its own device type, and 1_x needs to add a downlink preemption indication, thereby increasing the indication bit indicated by the preamble PI, and subsequently detects the DCI according to the extended DCI format;
- the PI indication in the extended DCI is set; the user equipment detects the DCI according to the known extended DCI format, so as to obtain the PI indication from the DCI.
- each bit and symbol in the PI indication which is divided into two cases: one case is that when the timeFrequencySet is configured to 0, the frequency domain is the entire frequency domain BWP, and the time domain is divided into 14 groups, 14
- the bits respectively indicate whether one of the time/frequency positions is occupied by URLLC data.
- 14 symbols are divided into 14 groups, each symbol corresponds to a bit in the PI indication, and a value of 1 indicates that it is occupied by the URLLC UE.
- timeFrequencySet when timeFrequencySet is set to 1, the frequency domain is divided into upper and lower parts, and several symbols are used as a group in the time domain, and 1 bit is used to indicate that, 14 bits can also represent 14 groups . As shown in the right figure in Figure 11, 14 symbols are divided into 14 groups, each symbol corresponds to a bit in the PI indication, and a value of 1 indicates that it is occupied by the URLLC UE.
- the base station determines that at least part of the downlink resources allocated to the user equipment in the first time unit is preempted, and then determines whether the user equipment is in the uplink state in the third time unit, and the third time unit is in the first time unit Afterwards, if yes, send a preemption indication to the user equipment in the second time unit, otherwise, send the preemption indication not in the second time unit but in the third time unit, wherein the user is pre-determined before allocating resources for the preemption indication Whether the device is in the uplink state in the third time unit, so that the PI indication is prepended only when it is determined that the user equipment is in the uplink state in the third time unit.
- FIG. 12 is a schematic flowchart of the sixth embodiment of the resource preemption processing method of the present application.
- the sixth embodiment of the resource preemption processing method includes:
- Step S61 Receive a preemption instruction from the base station in the second time unit, where the preemption instruction is used to indicate that at least part of the downlink resources allocated to the user equipment in the first time unit is preempted, and the second time unit is before the first time unit .
- the user equipment may be a half-duplex user equipment and/or a reduced capability user equipment.
- the preemption indication may include a first indicator, which may be used to indicate that the preemption indication is before or after the first time unit.
- the preemption indication may be included in the downlink control information DCI in a dedicated format.
- the DCI in the dedicated format may be DCI format 2_1.
- the preemption indication may be included in the DCI used to control the user equipment.
- Step S62 Use the allocated downlink resources to receive downlink transmission in the first time unit.
- Step S63 Decoding is performed after removing the part transmitted by using the preempted downlink resource in the downlink transmission.
- the user equipment receives the preemption indication from the base station in the second time unit, and then uses the allocated downlink resources to receive downlink transmission in the first time unit. Based on the preemption indication, the user equipment can determine the preempted allocated downlink resources in the first time unit At least part of the downlink resources are given to the user equipment, so that the part of the downlink resources can be removed and then decoded, so as to ensure the reliability of the data transmission of the user equipment.
- the user equipment may further receive the preemption indication from the base station in a third time unit, and the third time unit is after the first time unit to consider The compatibility of other normal user equipment ensures the normal operation of other normal user equipment.
- the user equipment can successfully receive the preemption instruction from the base station in the second time unit, and then uses the allocated downlink resources to receive downlink transmission in the first time unit, and removes the preempted downlink transmission according to the preemption instruction. After decoding the part of downlink resource transmission, it is possible to avoid decoding errors caused by preempted resources mixed into the data of the user equipment, so that there is no need to perform HARQ retransmission, or even multiple HARQ retransmissions, which ensures the data of the first user equipment. Reliability of transmission while reducing waste of resources.
- FIG. 13 is a schematic diagram of a second embodiment of multi-terminal interaction in the method for processing resource preemption of the present application.
- the base station determines that at least part of the downlink resources allocated to the duplex user equipment in the first time unit is preempted (the base station determines that the URLLC UE preempts at least part of the resources of the HD-FDD UE in the first time unit).
- the base station sends a preemption instruction to the dual half-duplex user equipment in the second time unit, and the second time unit is before the first time unit, and the preemption instruction is used to indicate that the at least half-duplex user equipment in the first time unit has been allocated.
- Some downlink resources are preempted (PDCCH (DCI format 2_1 + other DCIs)).
- the base station sends the PDCCH to the URLLC device in the second time unit.
- the dual half-duplex user equipment receives the preemption indication from the base station in the second time unit (detected DCI format 2_1).
- the dual-half-duplex user equipment uses the allocated downlink resources to receive downlink transmission (PDSCH (at least part of downlink resources are preempted)) in the first time unit.
- PDSCH downlink transmission
- the dual-half-duplex user equipment removes the part of the downlink transmission using the preempted downlink resource transmission and performs decoding.
- the URLLC device receives the PDCCH sent by the base station, and the decoding is successful.
- FIG. 14 is a schematic flowchart of the seventh embodiment of the resource preemption processing method of the present application. This embodiment is applied to the base station side. Specifically, the seventh embodiment of the resource preemption processing method includes:
- Step S71 It is determined that at least part of the downlink resources allocated to the user equipment in the first time unit are preempted.
- Step S72 Send a media access control MAC protocol data unit PDU including a preemption indication to the user equipment, where the preemption indication is used to indicate that at least part of the downlink resources allocated to the user equipment in the first time unit are preempted.
- a MAC PDU may include a MAC header, a MAC CE, and a MAC SDU.
- the MAC header may be composed of multiple MAC subheaders, and each MAC subheader corresponds to the MAC CE and the MAC SDU, and is used to indicate the corresponding MAC CE and MAC
- the name of the SDU (the LCID field in the MAC subheader is used to indicate the name of the corresponding MAC CE and the MAC SDU), length and other information; the MAC CE is used to carry control information related to radio resource management; the MAC SDU is used to carry data or Signaling, a MAC PDU can contain 0 or more MAC SDUs.
- one of the MAC control elements CE in the indication can be preempted, that is, the MAC CE.
- a new MAC CE may be constructed to carry the preemption indication.
- the LCID indicated by the PI can be defined, as shown in Table 1 below.
- the field 46 can be used to represent the MAC PDU containing the preemption indication, which can be specifically the name of the MAC CE.
- Table 1 Values of LCID for DL-SCH
- the base station when determining that at least part of the downlink resources allocated to the user equipment in the first time unit are preempted, the base station sends a medium access control MAC protocol data unit PDU containing a preemption indication to the user equipment, wherein the MAC PDU is carried
- the preemption instruction enables the user equipment to receive the preemption instruction in time, and can determine at least part of the downlink resources that have been preempted and allocated to the user equipment in the first time unit, thereby preventing URLLC burst services from being mixed into the data of the first user equipment
- the decoding error caused by the data is not necessary to perform HARQ retransmission, or even multiple HARQ retransmission, which ensures the reliability of the data transmission of the first user equipment and reduces the waste of resources.
- FIG. 15 is a schematic flowchart of the eighth embodiment of the resource preemption processing method of the present application
- FIG. 16 is a schematic diagram of the MACCE of the present application.
- the eighth embodiment of the resource preemption processing method includes:
- Step S81 It is determined that at least part of the downlink resources allocated to the user equipment in the first time unit are preempted.
- the user equipment is a half-duplex user equipment and/or a reduced capability user equipment.
- Step S82 Determine whether the user equipment is in the uplink state in the second time unit, which is after the first time unit.
- step S83 If yes, go to step S83; otherwise, go to step S84.
- the second time unit is after the first time unit.
- the user equipment If the user equipment is not in the uplink state in the second time unit, it means that the user equipment can receive the preemption instruction in the downlink control information in time, so that the user equipment can use the downlink control information to send the preemption instruction to the user equipment in the second time unit; if the user equipment In the uplink state in the second time unit, it means that the user equipment cannot receive the preemption instruction in the downlink control information in time, and thus needs to send the preemption instruction through the MAC PDU, so that the user equipment can receive the preemption instruction in time.
- the base station may also acquire user equipment information, and determine whether the user equipment can receive the preemption indication in the downlink control information in time according to the user equipment information, where the user equipment information may include a capability type identifier and/or a device type
- the user equipment information may include a capability type identifier and/or a device type
- the device type identifier obtained by the base station is HD-FDD UE, it means that the user equipment cannot receive the preemption instruction in the downlink control information in time, so the MAC PDU can be used to send the preemption instruction to ensure the reliability of user equipment data transmission.
- Step S83 Send a MAC PDU containing a preemption indication.
- the preemption indication is used to indicate that at least part of the downlink resources allocated to the user equipment in the first time unit are preempted.
- Step S84 Send a preemption indication to the user equipment by using the downlink control information in the second time unit.
- the medium access control MAC protocol data unit PDU includes a preemption indication.
- the base station may send a preemption indication to the user equipment using downlink control information (DCI) in the second time unit.
- DCI downlink control information
- the base station may use the unpreempted downlink resources to send the MAC PDU including the preemption indication in the first time unit.
- the preemption indication includes a first indicator, and the first indicator is used to indicate that the preemption indication is before or after the preempted downlink resources, so that when at least part of the downlink resources allocated to the user equipment is preempted, the preemption can be performed at the first time Before (after) the unit, the preemption indication is sent to the user equipment, and the user equipment can determine through the first indicator therein that the preemption indication is used to indicate that the downlink resources of the subsequent (previous) time unit are preempted.
- FIG. 16 it is a schematic diagram of MACCE, including two cases: one case (oct1) is the preemption indication (Preemption Indication) including the first indicator (Pre-Ind), the other case (oct2) Yes, the preemption indication of the first indicator is not included.
- the Preemption Indication is 14 bits, and each bit corresponds to each group of symbols in Figure 11. Specifically, it can correspond from the high-order bit or from the low-order bit.
- the size of the first indicator may be 1 bit or multiple bits.
- the first indicator is Pre-Ind (1 bit), the size is 1 bit, and its value is 1 to indicate a pre-PI indication, and its value is 0 to indicate a post-PI indication.
- it can be determined whether there is a MACCE containing a PI indication, if yes, it is determined to be a pre-PI indication, otherwise, it is determined to be a post-PI indication.
- a preemption indication may also be sent to the user equipment by using the downlink control information in the second time unit, and the second time unit is in the After the first time unit, the compatibility of other normal user equipments is considered to ensure the normal operation of other normal user equipments.
- FIG. 17 is a schematic flowchart of the eighth embodiment of the resource preemption processing method of the present application.
- the eighth embodiment of the resource preemption processing method includes:
- Step S91 Receive a MAC PDU including a preemption indication from the base station, where the preemption indication is used to indicate that at least part of the downlink resources allocated to the user equipment in the first time unit are preempted.
- the user equipment may be a half-duplex user equipment and/or a reduced capability user equipment.
- Step S92 Decoding is performed after removing the part of the downlink transmission received in the first time unit that is transmitted using the preempted downlink resource.
- the user equipment After receiving the MAC PDU containing the preemption indication from the base station, the user equipment can decode the MAC PDU to obtain the downlink preemption indication information of the first time unit, and remove the downlink transmission used in the downlink transmission received in the first time unit according to the downlink preemption indication information. The preempted part of the downlink resource transmission is then decoded.
- the user equipment may receive the preemption indication included in the downlink control information from the base station in a second time unit, which is after the first time unit.
- the preemption indication may include a first indicator, and the first indicator may be used to indicate that the preemption indication is before or after the preempted downlink resource.
- the transmission resource used by the MAC PDU including the preemption indication may be the downlink resource that is not preempted in the first time unit.
- the preemption indication may be a MAC CE in the MAC PDU.
- FIG. 18 is a schematic diagram of a third embodiment of multi-terminal interaction in the method for processing resource preemption of the present application.
- the base station determines that at least part of the downlink resources allocated to the user equipment in the first time unit is preempted, and constructs the MAC UE (determines that the URLLC UE preempts at least part of the resources of the HD-FDD UE in the first time unit, constructs MAC CE).
- the base station simultaneously sends a medium access control MAC protocol data unit PDU containing a preemption indication to the half-duplex user equipment and the URLLC device, and the preemption indication is used to indicate that at least part of the downlink resources allocated to the user equipment in the first time unit are seize.
- the half-duplex user equipment receives the MAC PDU containing the preemption indication from the base station.
- the half-duplex user equipment decodes the MAC CE, and performs decoding after removing the part transmitted using the preempted downlink resources in the downlink transmission received in the first time unit according to the decoded PI indication.
- the URLLC device can also decode, and the decoding is successful.
- FIG. 19 is a schematic structural diagram of a first embodiment of a communication device of the present application.
- the first embodiment of the communication device of the present application includes: a processor 110 , a memory 120 and a communication circuit 130 .
- the processor 110 controls the operation of the communication device, and the processor 110 may also be referred to as a CPU (Central Processing Unit, central processing unit).
- the processor 110 may be an integrated circuit chip with processing capability of signal sequences.
- Processor 110 may also be a general purpose processor, digital signal sequence processor (DSP), application specific integrated circuit (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components.
- DSP digital signal sequence processor
- ASIC application specific integrated circuit
- FPGA off-the-shelf programmable gate array
- a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
- the memory 120 stores instructions and data required for the operation of the processor 110 .
- the processor 110 is configured to execute instructions to implement the methods provided by the foregoing embodiments and possible combinations of the resource preemption processing method applied to the base station side of the present application.
- FIG. 20 is a schematic structural diagram of a second embodiment of a communication device of the present application.
- the second embodiment of the communication device of the present application includes: a processor 210 , a memory 220 and a communication circuit 230 .
- the processor 210 controls the operation of the communication device, and the processor 210 may also be referred to as a CPU (Central Processing Unit, central processing unit).
- the processor 210 may be an integrated circuit chip with processing capability of signal sequences.
- Processor 210 may also be a general purpose processor, digital signal sequence processor (DSP), application specific integrated circuit (ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components.
- DSP digital signal sequence processor
- ASIC application specific integrated circuit
- FPGA off-the-shelf programmable gate array
- a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
- Memory 220 stores instructions and data required for processor 210 to operate.
- the processor 210 is configured to execute instructions to implement the methods provided by the foregoing embodiments and possible combinations of the resource preemption processing method applied to the user equipment side of the present application.
- FIG. 21 is a schematic structural diagram of an embodiment of a readable storage medium of the present application.
- the readable storage medium of the present application stores instructions 310 , and when the instructions 310 are executed by the processor, implement the methods provided by the embodiments and possible combinations of the resource preemption processing method of the present application.
- the readable storage medium may include a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a flash memory (Flash Memory), a hard disk, an optical disk, and the like.
- the disclosed method and apparatus may be implemented in other manners.
- the device implementations described above are only illustrative.
- the division of the modules or units is only a logical function division. In actual implementation, there may be other divisions.
- multiple units or components may be Incorporation may either be integrated into another system, or some features may be omitted, or not implemented.
- the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
- the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this implementation manner.
- each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit.
- the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
- the integrated unit if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium.
- the technical solutions of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, and the computer software products are stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in the various embodiments of the present application.
- the aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes .
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Abstract
本申请公开了一种混合自动重传请求反馈方法,该方法应用于基站侧,该方法包括:获取超可靠低延迟通信URLLC突发业务的信息;跳过为第一用户设备分配的无线资源确定为URLLC突发业务分配抢占的无线资源,第一用户设备不允许资源被URLLC突发业务占用。本申请还公开了一种通信设备和可读存储介质。
Description
本申请涉及通信领域,特别是涉及一种资源抢占处理方法、通信设备及可读存储介质。
目前,无线通信***利用频分双工(Frequency Division Duplex,FDD)或利用时分双工(Time Division Duplex,TDD)来进行基站与用户设备(UserEquipment,UE)之间的数据传输。如图1所示,在FDD的无线通信***中,对上行链路和下行链路使用不同频率的信道,用户设备可同时地在上行和下行信道传输数据。在TDD的无线通信***中,对上行和下行链路使用同一频率的信道,如此***中的传输时间线要被划分成上行传输时间和下行传输时间。其中,FDD双工方式可进一步分为全双工FDD(Full-Duplex FDD)和半双工FDD(Half-Duplex FDD,HD-FDD),HD-FDD具备FDD和TDD的特点,即上行链路和下行链路使用不同频率的信道,但上行和下行传输时间上要错开。
第五代移动通信***(5G NR)包括三大应用场景,即增强移动宽带(eMBB:Enhanced Mobile Broadband)、大规模机器类型通信(mMTC:Massive Machine Type Communication)以及低时延高可靠(URLLC:Ultra-reliable low-latency communication)。URLLC有两个基本特点,即高可靠和低时延,例如10
-5或10
-6量级的BLER性能,0.5ms或1ms的空口传输时延。由3GPPR15规定,URLLC将为latency0敏感的设备提供服务,该设备可以称之为URLLC设备。为了提高***的资源利用率,URLLC设备和非URLLC设备可以共存,其中当URLLC设备突发URLLC业务,而非URLLC设备已经占用无线资源进行传输时,在R15中指出了URLLC的下行抢占机制。对应地,下行抢占(Pre-emption Indication,PI)指示机制用于通知用户设备被抢占资源的位置,具体地,基站通过发送PI指示(后指示方式),以通知用户设备被抢占资源的位置,从而用户设备能够接收PI指示,并根据PI指示去除已接收到的数据中的被抢占资源,从而排除被抢占资源的影响,实现成功解码。
如图2所示,PUCCH为物理上行控制信道(Physical uplink control channel),PDSCH为物理下行共享信道(Physical Downlink Share Channel),其中,PDSCH中的部分资源被URLLCUE抢占,所以在PDSCH之后需要通过PUCCH将PI指示传输至对应的被抢占资源的UE,以使被抢占资源的UE能够根据PI指示去除被抢占位置的资源,从而实现成功解码。
但是,半双工用户设备(HD-FDDUE)在同一时刻只能接收或发送消息,并不能并行,所以可能会存在HD-FDDUE收到被打孔了(被抢占资源)的数据,但之后HD-FDDUE切换到上行链路(UL),无法监听基站发送的PI指示,从而无法得知资源已被占用及被占用资源的位置,此时HD-FDDUE已经将时频资源上的数据一起接收,然后解码,由于接收数据中含有URLLC用户数据,造成解码错误,从而导致重传,并且由于其HARQ(Hybrid automatic repeat request,混合自动重传请求)缓存被URLLC用户数据污染,即使多次HARQ重传,不同的冗余版本进行软合并,仍然有可能导致解码错误,影响了非URLLCUE数据传输的可靠性和资源浪费。
【发明内容】
本申请主要解决的技术问题是提供一种资源抢占处理方法、通信设备及可读存储介质,能够解决现有技术中用户设备数据传输的可靠性低,以及资源浪费的问题。
为了解决上述技术问题,本申请第一方面提供了一种资源抢占处理方法,该方法应用于基站侧,该方法包括:获取超可靠低延迟通信URLLC突发业务的信息;跳过为第一用户设备分配的无线资源确定为URLLC突发业务分配抢占的无线资源,第一用户设备不允许资源被URLLC突发业务占用。
为了解决上述技术问题,本申请第二方面提供了一种资源抢占处理方法,该方法应用于 用户设备侧,该方法包括:向基站发送用户设备信息,用户设备信息用于指示用户设备不允许资源被URLLC突发业务占用。
为了解决上述技术问题,本申请第三方面提供了一种通信设备,该设备包括处理器、存储器和通信电路,处理器连接通信电路;存储器存储有指令,处理器用于执行指令以实现如本申请第一方面所提供的资源抢占处理方法。
为了解决上述技术问题,本申请第四方面提供了一种通信设备,该设备包括处理器、存储器和通信电路,处理器连接通信电路;存储器存储有指令,处理器用于执行指令以实现如本申请第二方面所提供的资源抢占处理方法。
为了解决上述技术问题,本申请提供了一种可读存储介质,存储有指令,指令被处理器执行时实现前述的资源抢占处理方法。
本申请的有益效果是:基站获取超可靠低延迟通信URLLC突发业务的信息;跳过为第一用户设备分配的无线资源确定为URLLC突发业务分配抢占的无线资源,其中,通过设定第一用户设备不允许资源被URLLC突发业务占用,可以不再将为第一用户设备分配的无线资源分配给URLLC突发业务,从而可以避免第一用户设备的数据中混入URLLC突发业务的数据而导致的解码错误,进而不必再进行HARQ重传,甚至多次HARQ重传,保障了第一用户设备的数据传输的可靠性的同时减少了资源浪费。
为了更清楚地说明本申请实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本申请的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。其中:
图1是现有技术中FDD、HD-FDD和FDD的一示意图;
图2是现有技术中后置抢占指示机制的一示意图;
图3是本申请无线通信***或网络一实施方式的结构示意图;
图4是本申请资源抢占处理方法第一实施例的流程示意图;
图5是本申请资源抢占处理方法第二实施例的流程示意图;
图6是本申请资源抢占处理方法第三实施例的流程示意图;
图7是本申请资源抢占处理方法多端交互第一实施例的示意图;
图8是本申请资源抢占处理方法第四实施例的流程示意图;
图9是本申请资源抢占处理方法第五实施例的流程示意图;
图10是下行抢占指示的一示意图;
图11是抢占指示的各比特位与符号的对应关系的一示意图;
图12是本申请资源抢占处理方法第六实施例的流程示意图;
图13是本申请资源抢占处理方法多端交互第二实施例的示意图;
图14是本申请资源抢占处理方法第七实施例的流程示意图;
图15是本申请资源抢占处理方法第八实施例的流程示意图;
图16是本申请MACCE的一示意图;
图17是本申请资源抢占处理方法第八实施例的流程示意图;
图18是本申请资源抢占处理方法多端交互第三实施例的示意图;
图19是本申请通信设备第一实施例的结构示意图;
图20是本申请通信设备第二实施例的结构示意图;
图21是本申请可读存储介质一实施例的结构示意图。
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述,以下各实施例中不冲突的可以相互结合。显然,所描述的实施例仅是本申请的一部分实 施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
本申请中的“用户设备”可以包括或代表用于通信的任何便携式计算设备。在所描述的设备,方法和***的某些实施例中可使用的用户设备的示例可以是有线或无线设备,例如移动设备,移动电话,用户设备,智能电话,便携式计算设备,诸如膝上型电脑,手持设备,平板,平板电脑,上网本,个人数字助理,音乐播放器以及能够进行有线或无线通信的其他计算设备。另外,用户设备还可以为能力降低(Reduced Capability)用户设备。
请参阅图3,图3是包括核心网102(或电信基础设施),具有服务于多个无线通信单元108a-108e(例如UE)的小区106a-106m的多个网络节点104a-104m(例如基站gNB)的无线通信***或网络100的示意图。多个网络节点104a-104m通过链路连接到核心网102。这些链路可以是有线或无线的(例如无线电通信链接、光纤等)。核心网102可包括多个核心网络节点,网络实体,应用服务器或可以与包括多个网络节点104a-104m的一个或多个无线接入网络进行通信的任何其他网络或计算设备。
在本示例中,网络节点104a-104m被示意为基站,例如但不限于,其在5G网络中可以是gNB。多个网络节点104a-104m(例如,基站)中的每个都具有足迹(footprint),为简化且例如但不限于,其在图3中示意性地表示用于服务于一个或多个UE 108a-108e的对应的圆形小区106a-106m。UE 108a-108e能够从无线通信***100接收服务,例如声音、视频、音频或其他通信服务。
无线通信***或网络100可以包括或代表用于UE 108a-108e与其他设备、内容源或连接无线通信***或网络100的服务器之间的通信的任意一个或多个通信网络。核心网102也可以包括或代表链接,耦接或连接以形成无线通信***或网络100的一个或多个通信网络,一个或多个网络节点,实体,元素,应用程序服务器,服务器,基站或其他网络设备。网络节点之间的链接或耦接可以是有线或无线的(例如无线电通信链接、光纤等)。该无线通信***或网络100以及核心网102可以包括包含网络节点或实体的核心网络和无线接入网络的任何适当组合,基站,接入点等,其使得UE 108a-108e、无线通信***100和核心网102的网络节点104a-104m、内容源和/或连接到***或网络100的其他设备之间能够通信。
可在所描述的设备,方法和***一些实施例中使用的无线通信网络100的示例可以是至少一个通信网络或其组合,包括但不限于,一个或多个有线和/或无线电信网络,一个或多个核心网,一个或多个无线接入网络,一个或多个计算机网络,一个或多个数据通信网络,互联网,电话网络,无线网络,例如基于仅作为示例的IEEE802.11标准的WiMAX、WLAN和/或Wi-Fi网络,或互联网协议(Internet Protocol,IP)网络,分组交换网络或增强型分组交换网络,IP多媒体子***(IP Multimedia Subsystem,IMS)网络或基于无线、蜂窝或卫星技术的通信网络,诸如移动网络,全球移动通信***(Global System for Mobile Communications,GSM),GPRS网络,宽带码分多址接入(Wideband Code Division Multiple Access,W-CDMA),CDMA2000或LTE/高级LTE通信网络或任何第二代,第三代,***或第五代和超越类型的通信网络等。
在图3的示例中,该无线通信***100可以是,仅作为示例但不限于,使用下行链路和上行链路信道的循环前缀正交频分复用(cyclic prefix orthogonal frequency division multiplexing,CP-OFDM)技术的5G通信网络。下行链路可以包括用于将数据从一个或多个gNB 104a-104m传输到一个或多个UE 108a-108e的一个或多个通信信道。通常下行链路信道是用于传输数据的通信信道,例如,从gNB 104a到UE 108a。
用于5G网络的上行链路和下行链路均被分成无线帧(例如,每个帧可以是10ms的长度),其中每个帧可以被分成多个子帧。例如,每个帧可以包括10个长度相等的子帧,其中每个子帧由用于传输数据的多个时隙(例如2个时隙)组成。除了时隙之外,子帧可以包括若干额外的特殊字段或OFDM符号,其可包括,仅作为示例,下行链路同步符号,广播符号和/或上行链路参考符号。
请参阅图4,图4是本申请资源抢占处理方法第一实施例的流程示意图。
具体而言,资源抢占处理方法第一实施例包括:
步骤S11:获取超可靠低延迟通信URLLC突发业务的信息。
本实施例应用于基站侧。URLLC低延迟场景的数据特点主要是突发性强但是数据量不大,所以NR支持URLLC采用抢占方式占据信道资源。例如,在基站分配物理资源给eMBB业务时,就已经将eMBB业务的资源也同时分配给了URLLC业务,当URLLC抢占物理资源时,NR将抢占结果通知给UE,用以保证URLLC的低延迟要求。其中,URLLC突发业务对应的用户设备称为URLLCUE。
当基站获取到超可靠低延迟通信URLLC突发业务的信息时,需要为URLLC突发业务分配无线资源,这里被分配的无线资源可以是未被用户设备占用的无线资源,或已被用户设备占用的无线资源。
步骤S12:跳过为第一用户设备分配的无线资源确定为URLLC突发业务分配抢占的无线资源,第一用户设备不允许资源被URLLC突发业务占用。
本实施例中,第一用户设备不允许资源被URLLC突发业务占用,当基站需要为URLLC突发业务分配抢占的无线资源时,基站跳过为第一用户设备分配的无线资源确定为URLLC突发业务分配抢占的无线资源,从而保证了为第一用户设备分配的无线资源的完整性。其中,由于为第一用户设备分配的无线资源未被URLLC突发业务占用,从而避免了第一用户设备的用户数据中混入干扰数据(URLLC业务的数据)而导致的解码错误,进而无需进行HARQ重传,甚至多次HARQ重传,保障了第一用户设备的数据传输的可靠性的同时避免了资源浪费。
可选地,第一用户设备可以为半双工用户设备,例如安全传感器(安全开关、安全光栅、安全门***)。半双工用户设备(HD-FDD UE)采用HD-FDD操作模式,在同一时刻只能接收或发送消息,并不能并行,所以尽管***设置有下行抢占指示机制,由于PI指示为后指示方式(如图2所示,即在占用资源之后,再发送PI指示),下文简称为后置PI指示,在基站下发PI指示时,若用户设备正处于上行状态,即只能发送消息,这时用户设备无法接收到PI指示,从而可能会影响半双工用户设备的数据传输的可靠性,所以对于半双工用户设备等该类设备,通过将其设置为不允许资源被URLLC突发业务占用,从而可以避免URLLC突发业务的影响,保障半双工用户设备的数据传输的可靠性。
在一些实施方式中,第一用户设备可以为能力降低(Reduced Capability)用户设备,简称为RedCap UE。其中,RedCap UE可以包括三大类设备,分别为工业无线传感器、智慧城市中的视频监控设备和可穿戴设备。具体地,工业无线传感器包括压力传感器、湿度传感器、温度计、运动传感器、加速度计、执行器等;智慧城市中的视频监控设备包括门禁设备、交通视频监控设备等;可穿戴设备包括智能手表、手环、戒指、电子健康相关设备、医疗监控设备等。RedCap UE相比于URLLC/eMBB设备,设备尺寸相对较小,带宽、峰值速率的要求也不是很高。可选地,RedCap UE可以采用HD-FDD操作模式,采用HD-FDD操作模式RedCap UE也即是HD-FDD UE。
在一些实施方式中,第一用户设备具体可以不允许上行资源和/或下行资源被URLLC突发业务占用。具体地,第一用户设备不允许上行资源被URLLC突发业务占用,或者第一用户设备不允许下行资源被URLLC突发业务占用,或者第一用户设备不允许上行资源和下行资源被URLLC突发业务占用。可以理解的,本申请提供的资源抢占处理方法不仅可以应用于URLLC业务中的下行抢占机制,还可以应用于URLLC业务中的上行取消机制,即URLLC设备不能抢占第一用户设备的上行资源。
本实施例中,基站获取超可靠低延迟通信URLLC突发业务的信息;跳过为第一用户设备分配的无线资源确定为URLLC突发业务分配抢占的无线资源,其中,通过设定第一用户设备不允许资源被URLLC突发业务占用,可以不再将为第一用户设备分配的无线资源分配给URLLC突发业务,从而可以避免第一用户设备的数据中混入URLLC突发业务的数据而导 致的解码错误,进而不必再进行HARQ重传,甚至多次HARQ重传,保障了第一用户设备的数据传输的可靠性的同时减少了资源浪费。
请参阅图5,图5是本申请资源抢占处理方法第二实施例的流程示意图。
具体而言,资源抢占处理方法第二实施例包括:
步骤S21:获取超可靠低延迟通信URLLC突发业务的信息。
具体内容可参考本申请资源抢占处理方法第一实施例的描述,在此不再重复。
步骤S22:获取第一用户设备的信息。
步骤S23:根据第一用户设备的信息确定第一用户设备不允许资源被URLLC突发业务占用。
步骤S22-S23与S21并无一定的先后顺序,本实施例中,步骤S22-S23可以在步骤S21之后执行,在其他实施例中,步骤S22-S23可以在步骤S21之前执行或同时执行,此处不做限定。
在一些实施方式中,第一用户设备的信息可以包括第一用户设备的能力信息(UE capability)。其中,第一用户设备的能力信息可以包括用于表示第一用户设备不允许资源被URLLC突发业务占用的标识。
一种实施方式,第一用户设备的能力信息一定包括用于表示第一用户设备不允许资源被URLLC突发业务占用的标识,从而当基站获取到第一用户设备的能力信息时,则可以直接确定该第一用户设备不允许资源被URLLC突发业务占用。另一种实施方式,第一用户设备的能力信息可能包括用于表示第一用户设备不允许资源被URLLC突发业务占用的标识,此时,基站在获取到第一用户设备的信息之后,需要在确定其中包括表示第一用户设备不允许资源被URLLC突发业务占用的标识之后,才能确定该第一用户设备不允许资源被URLLC突发业务占用。
第一用户设备的信息可以由无线接入控制RRC消息承载,或者可以在随机过程中采用特殊资源传输,如MSG1/MSGA,具体可以为MSG1/MSGA中单独的初始UL BWP、单独的preamble和单独的Prach occasion中的至少一者。无线接入控制RRC消息可以包括RRCSetupComplete,RRCReconfigurationComplete,RRCReestablishmentComplete,UEcapabilityInformation等消息。
可选地,第一用户设备可以主动上报能力信息,基站接收第一用户设备主动上报的能力信息,并判断能力信息中是否包括用于表示第一用户设备不允许资源被URLLC突发业务占用的标识,若包括,则可以确定该第一用户设备不允许被URLLC突发业务占用;若不包括,则可以确定该第一用户设备允许被URLLC突发业务占用。另外,基站可以主动获取第一用户设备的能力信息。
具体地,第一用户设备的信息可以包括能力类型标识和/或设备类型标识,能力类型标识和/或设备类型标识可以用于表示第一用户设备不允许资源被URLLC突发业务。能力类型标识可以包括无线接入相关能力和核心网相关能力,具体可以是UE capability information中包括的能力类型。
在一应用场景中,设备类型标识可以但不限于包括半双工用户设备标识(如HD-FDD UE)和双工用户设备标识(如FDD UE),其中HD-FDD UE用于表示第一用户设备不允许资源被URLLC突发业务占用,FDD UE用于表示第一用户设备允许资源被URLLC突发业务占用。当第一用户设备上报的设备类型标识为HD-FDD UE时,基站可以基于HD-FDD UE确定该第一用户设备不允许资源被URLLC突发业务占用。
在一应用场景中,设备类型标识可以但不限于包括Redcap UE和regular NR UE,其中Redcap UE用于表示第一用户设备不允许资源被URLLC突发业务占用,regular NR UE用于表示第一用户设备允许资源被URLLC突发业务占用。当第一用户设备上报的设备类型标识为Redcap UE时,基站可以基于Redcap UE确定该第一用户设备不允许资源被URLLC突发业务占用。在其他应用场景中,Redcap UE还可以包括多个子设备类型标识,例如无线传感 器标识、视频监控设备标识和可穿戴设备标识。
在一些实施方式中,并不是所有Redcap UE都对性能要求较高,对于一些对性能要求低的Redcap UE可以允许资源被URLLC突发业务占用,而性能要求低的Redcap UE可以不允许资源被URLLC突发业务占用。例如,设备类型标识为Redcap UE-1代表性能要求不高的UE(如智能手环),则该UE可以允许资源被URLLC突发业务占用;设备类型标识为Redcap UE-2代表性能要求高的UE(如安全传感器或高端视频监控设备),则该UE可以不允许资源被URLLC突发业务占用。
在另一些实施方式中,第一用户设备的信息包括用于表示第一用户设备不允许资源被URLLC突发业务占用的专用标识。专用标识可以由无线接入控制RRC消息承载。其中,专用标识可以根据实际情况进行选择,此处不做限定,只要能够用于表示第一用户设备不允许资源被URLLC突发业务占用即可。
步骤S24:跳过为第一用户设备分配的无线资源确定为URLLC突发业务分配抢占的无线资源。
若基站确定第一用户设备不允许资源被URLLC突发业务占用,则可以跳过为第一用户设备分配的无线资源确定为URLLC突发业务分配抢占的无线资源,即不将为第一用户设备分配的无线资源分配给URLLC突发业务;若基站确定第一用户设备允许资源被URLLC突发业务占用,则可以将为第一用户设备分配的无线资源确定为URLLC突发业务分配抢占的无线资源。
本实施例中,基站获取第一用户设备的信息,根据第一用户设备的信息确定第一用户设备不允许资源被URLLC突发业务占用,从而可以在获取超可靠低延迟通信URLLC突发业务的信息时,跳过为第一用户设备分配的无线资源确定为URLLC突发业务分配抢占的无线资源,其中通过第一用户设备的信息可以确定第一用户设备的资源是否能够被URLLC突发业务占用且不影响数据传输的可靠性,若否,则可以确定第一用户设备不允许资源被URLLC突发业务占用,从而保障第一用户设备数据传输的可靠性。
请参阅图6,图6是本申请资源抢占处理方法第三实施例的流程示意图。
具体而言,资源抢占处理方法第三实施例包括:
步骤S31:向基站发送用户设备信息,用户设备信息用于指示用户设备不允许资源被URLLC突发业务占用。
本实施例应用于用户设备侧。用户设备向基站发送用户设备信息,用户设备信息用于指示用户设备不允许资源被URLLC突发业务占用以使基站基于用户设备信息确定用户设备不允许资源被URLLC突发业务占用,从而跳过为用户设备分配的无线资源确定为URLLC突发业务分配抢占的无线资源。
在一些实施方式中,用户设备可以为半双工用户设备和/或能力降低用户设备。
在一些实施方式中,用户设备不允许上行资源和/或下行资源被URLLC突发业务占用。
在一些实施方式中,用户设备信息可以包括用户设备的能力信息,用户设备的能力信息可以包括用于表示用户设备不允许资源被URLLC突发业务占用的标识。
在一些实施方式中,用户设备信息可以包括用于表示用户设备不允许资源被URLLC突发业务占用的专用标识。专用标识可以由无线接入控制RRC消息承载。
可以理解的,本实施例中的用户设备与上实施例中的第一用户设备类似,具体内容可参考本申请资源抢占处理方法第一实施例和第二实施例中的描述,在此不再重复。
本实施例中,用户设备通过向基站送用户设备信息,用户设备信息用于指示用户设备不允许资源被URLLC突发业务占用,以使基站基于用户设备信息确定用户设备不允许资源被URLLC突发业务占用,并跳过为用户设备分配的无线资源确定为URLLC突发业务分配抢占的无线资源,从而可以避免第一用户设备的数据中混入URLLC突发业务的数据而导致的解码错误,进而不必再进行HARQ重传,甚至多次HARQ重传,保障了第一用户设备的数据传输的可靠性的同时减少了资源浪费。
请参阅图7,图7是本申请资源抢占处理方法多端交互第一实施例的示意图。
资源抢占处理方法多端交互第一实施例可以包括:
1)基站(gNB)获取超可靠低延迟通信URLLC突发业务的信息。
2)第一用户设备(UE1)向基站发送第一用户设备的信息。
3)基站接收第一用户设备的信息。
4)基站根据第一用户设备的信息确定第一用户设备不允许资源被URLLC突发业务占用。
5)基站跳过为第一用户设备分配的无线资源确定为URLLC突发业务分配抢占的无线资源,第一用户设备不允许资源被URLLC突发业务占用。
关于上面内容的说明,请参见前述实施例的相应位置,此处不做赘述。
请参阅图8,图8是本申请资源抢占处理方法第四实施例的流程示意图。
具体而言,资源抢占处理方法第四实施例包括:
步骤S41:确定在第一时间单元的已分配给用户设备的至少部分下行资源被抢占。
本实施例应用于基站侧。用户设备可以为半双工用户设备和/或能力降低用户设备。
本实施例中,时间单元可以为时隙(Slot),则第二时间单元可以为第一时间单元的前一个时隙,或可以为第一时间单元的前N个时隙,N为正整数。
具体地,在第一时间单元的已分配给用户设备的至少部分下行资源可以是被URLLCUE的URLLC突发业务抢占。URLLC UE抢占HD-FDD UE的下行资源,且其抢占时机是在抢占资源对应的时隙至少一个控制资源集CORESET时域周期还未开始,采用本实施例的前置PI方案,可以解决较大部分HD-FDD UE无法接收PI指示的异常情况。
步骤S42:在第二时间单元向用户设备发送抢占指示,第二时间单元在第一时间单元之前,抢占指示用于指示在第一时间单元的已分配给用户设备的至少部分下行资源被抢占。
当基站确定URLLC突发业务抢占了在第一时间单元的已分配给HD-FDD UE的至少部分下行资源时,在第一时间单元之前的第二时间单元向用户设备发送抢占指示(前置PI指示),以指示在第一时间单元的已分配给用户设备的至少部分下行资源被抢占,并指示被抢占的至少部分下行资源的位置,从而用户设备能够排除被抢占资源的影响。
在一些实施方式中,基站可以不区分用户设备,即对所有的用户设备采用在第二时间单元向用户设备发送抢占指示。在另一些实施方式中,基站可以区分用户设备,仅对半双工用户设备等无法接收后置PI指示的用户设备采用在第二时间单元向用户设备发送抢占指示。
本实施例通过将PI指示前置,且用户设备能够接收前置PI指示,从而无论用户设备在第一时间单元之后的时间单元是否处于上行状态,用户设备都能够在第二时间单元成功接收PI指示,并获知第一时间单元的已分配给用户设备的至少部分下行资源被抢占,从而可以避免用户设备的数据中混入被抢占资源而导致的解码错误,进而不必再进行HARQ重传,甚至多次HARQ重传,保障了第一用户设备的数据传输的可靠性的同时减少了资源浪费。
请参阅图9至图10,图9是本申请资源抢占处理方法第五实施例的流程示意图,图10是下行抢占指示的一示意图,图11是抢占指示的各比特位与符号的对应关系的一示意图。
具体而言,资源抢占处理方法第五实施例包括:
步骤S51:确定在第一时间单元的已分配给用户设备的至少部分下行资源被抢占。
具体内容可参考本申请资源抢占处理方法第四实施例的描述,在此不再重复。
步骤S52:判断用户设备是否在第三时间单元处于上行状态,第三时间单元在第一时间单元之后。
若是,则执行步骤S53,否则,执行步骤S54。
其中,步骤S52与步骤S51并无一定的先后关系,本实施例中,步骤S52可以在步骤S51之后执行,在其他实施例中,步骤S52可以在步骤S51之前执行或同时执行,此处不做限定。
本实施例中,时间单元可以为时隙(Slot),则第三时间单元可以为第一时间单元的后一个时隙,或可以为第一时间单元的后N个时隙,N为正整数。
基站可以根据用户设备的上下行时间分配,确定用户设备在切换到上行状态之前,是否 能够接受到PI指示,从而根据结果确定是否需要前置PI指示。
具体地,基站判断用户设备是否在第三时间单元处于上行状态,若是,则说明用户设备无法在第三时间单元成功接收后置PI指示,从而需要预先在第二时间单元向用户设备发送抢占指示,以使用户设备成功接收PI指示;若否,则说明用户设备能够在第三时间单元成功接收后置PI指示,从而可以不必将PI指示前置,仍可以在第三时间单元向用户设备发送抢占指示。
步骤S53:在第二时间单元向用户设备发送抢占指示。
步骤S54:不在第二时间单元发送抢占指示而在第三时间单元发送抢占指示。
其中,第二时间单元在第一时间单元之前,抢占指示用于指示在第一时间单元的已分配给用户设备的至少部分下行资源被抢占。
本实施例中,抢占指示可以包括第一指示符,第一指示符用于表示抢占指示在第一时间单元之前或之后。可选地,第一指示符的大小可以为1比特或多比特。例如,第一指示符为Pre-Ind(1bit),大小为1比特,其值为1表示前置PI指示,其值为0表示后置PI指示。
在一些实施方式中,基站向用户设备发送抢占指示,用户设备接收抢占指示,并确定是否包括第一指示符,若包括第一指示符,则确定在第一时间单元的已分配给用户设备的至少部分下行资源被抢占,若不包括第一指示符,则确定在第一时间单元的已分配给用户设备的至少部分下行资源未被抢占。
在其他实施例中,步骤S53之后,还可以包括:在第三时间单元向用户设备发送抢占指示,第三时间单元在第一时间单元之后。现有设计中是后置下行抢占指示,而本实施例为了解决半双工用户设备与URLLC业务的冲突,从而将PI指示前置,但是考虑到其他正常的用户设备的兼容性,基站仍可以在第三时间单元向用户设备发送抢占指示。
在一些实施方式中,抢占指示可以包含在专用格式的下行控制信息(Downlink Control Information,DCI)中,专用格式的DCI具体可以为DCI format 2_1。具体地,当用户设备在第三时间单元处于上行状态时,基站可以调度DCI format 2_1和其他正常调度的DCI,多个DCI可以分处于同一个CORESET的不同搜索空间Searchspace中;或者处于不同的CORESET中。
具体地,如图10所示,基站可以通过组播向用户设备发送PI指示,PI指示承载在DCI format 2_1中,通知用户设备在一个RDR(Reference DL Region)内被抢占的资源。DCI format 2_1是Group-common DCI,payloadSize最大126bit,每段14bit对应一个UE PI,由INT_RNTI加扰,抢占的指示/配置在DownlinkPreemption中。URLLC业务为保证可靠性,在频域上占用较大的带宽,因此一个URLLC用户的数据可能会占据多个非URLLC UE的数据的时频资源,为节省开销,PI指示可以承载在Group-common的DCI格式中,用以通知一组用户设备被URLLC业务抢占的资源,效率更高。
在一些实施方式中,抢占指示可以包含在用于控制用户设备的DCI中,即可在现有的DCI中扩展,增加PI指示(14bit),具体可以在用于控制用户设备的DCI中增加前置PI指示的指示位(如DCI 0_x,1_x)以及PI指示(14bit)。可以理解的,PI指示是可选择配置的,不是所有的用户设备都需要配置,当用户设备被抢占资源时,则可以根据被抢占资源的位置,设置用于控制用户设备的DCI中的PI指示,或者当确定用户设备无法及时接收PI指示时,才设置用于控制用户设备的DCI中的PI指示,以指示被抢占的资源信息。
在一应用场景中,用户设备根据自身的设备类型,确定要检测的DCI 0_x,1_x要增加下行抢占指示,从而增加前置PI指示的指示位,后续按扩展的DCI格式检测DCI;基站在确定下行资源被抢占时,设置扩展的DCI中的PI指示;用户设备根据已知的扩展的DCI格式检测DCI,从而从DCI中获得PI指示。
这里简单介绍PI指示中各bit与symbol对应关系,分为两种情况:一种情况是,当timeFrequencySet配置为0的时候,频域上为整个频域BWP,时域上分成14组,14个比特分别表示其中一组时/频位置是否被URLLC数据占据。如图11中的左图所示,14个Symbol 分成14组,每个symbol与PI指示中的一个bit对应,值为1表示被URLLC UE占用。另一种情况是,当timeFrequencySet配置为1的时候,将频域划分为上下两部分,在时域上几个符号作为一组,使用其中的1个比特来指示,14比特同样可以表示14组。如图11中的右图所示,14个Symbol分成14组,每个symbol与PI指示中的一个bit对应,值为1表示被URLLC UE占用。
本实施例中,基站通过确定在第一时间单元的已分配给用户设备的至少部分下行资源被抢占,然后判断用户设备是否在第三时间单元处于上行状态,第三时间单元在第一时间单元之后,若是,则在第二时间单元向用户设备发送抢占指示,否则,则不在第二时间单元发送抢占指示而在第三时间单元发送抢占指示,其中,在为抢占指示分配资源之前预先确定用户设备是否在第三时间单元处于上行状态,以实现仅在确定用户设备在第三时间单元处于上行状态时,才将PI指示前置。
请参阅图12,图12是本申请资源抢占处理方法第六实施例的流程示意图。
具体而言,资源抢占处理方法第六实施例包括:
步骤S61:在第二时间单元接收来自于基站的抢占指示,抢占指示用于指示在第一时间单元的已分配给用户设备的至少部分下行资源被抢占,第二时间单元在第一时间单元之前。
本实施例应用于用户设备侧。用户设备可以为半双工用户设备和/或能力降低用户设备。
在一些实施方式中,抢占指示可以包括第一指示符,第一指示符可以用于表示抢占指示在第一时间单元之前或之后。抢占指示可以包含在专用格式的下行控制信息DCI中。专用格式的DCI可以为DCI format 2_1。
在一些实施方式中,抢占指示可以包含在用于控制用户设备的DCI中。
步骤S62:在第一时间单元使用已分配的下行资源接收下行传输。
步骤S63:去除下行传输中使用被抢占的下行资源传输的部分后进行解码。
用户设备在第二时间单元接收来自于基站的抢占指示,然后在第一时间单元使用已分配的下行资源接收下行传输,基于抢占指示,用户设备可以确定被抢占的在第一时间单元的已分配给用户设备的至少部分下行资源,从而可以将该部分下行资源去除,再进行解码,以保障用户设备数据传输的可靠性。
在一些实施方式中,在第二时间单元接收来自于基站的抢占指示之后,用户设备还可以在第三时间单元接收来自于基站的抢占指示,第三时间单元在第一时间单元之后,以考虑其他正常的用户设备的兼容性,保障其他正常的用户设备的正常工作。
可以理解的,本实施例中的具体内容可参考本申请资源抢占处理方法上述实施例中的描述,在此不再重复。
本实施例中,用户设备在第二时间单元能够成功接收来自于基站的抢占指示,然后在第一时间单元使用已分配的下行资源接收下行传输,并根据抢占指示去除下行传输中使用被抢占的下行资源传输的部分后进行解码,从而可以避免用户设备的数据中混入被抢占资源而导致的解码错误,进而不必再进行HARQ重传,甚至多次HARQ重传,保障了第一用户设备的数据传输的可靠性的同时减少了资源浪费。
请参阅图13,图13是本申请资源抢占处理方法多端交互第二实施例的示意图。
资源抢占处理方法多端交互第二实施例可以包括:
1)基站(gNB)确定在第一时间单元的已分配给双半工用户设备的至少部分下行资源被抢占(基站确定在第一时间单元URLLC UE抢占了HD-FDD UE的至少部分资源)。
2)基站在第二时间单元向双半工用户设备发送抢占指示,第二时间单元在第一时间单元之前,抢占指示用于指示在第一时间单元的已分配给双半工用户设备的至少部分下行资源被抢占(PDCCH(DCI format 2_1+其他DCI))。
3)基站在第二时间单元向URLLC设备发送PDCCH。
4)双半工用户设备(HD-FDD UE)在第二时间单元接收来自于基站的抢占指示(检测到DCI format 2_1)。
5)双半工用户设备在第一时间单元使用已分配的下行资源接收下行传输(PDSCH(至少部分下行资源被抢占))。
6)双半工用户设备根据DCI format 2_1,去除下行传输中使用被抢占的下行资源传输的部分后进行解码。
7)URLLC设备接收基站发送的PDCCH,解码成功。
关于上面内容的说明,请参见前述实施例的相应位置,此处不做赘述。
请参阅图14,图14是本申请资源抢占处理方法第七实施例的流程示意图。本实施例应用于基站侧。具体而言,资源抢占处理方法第七实施例包括:
步骤S71:确定在第一时间单元的已分配给用户设备的至少部分下行资源被抢占。
步骤S72:向用户设备发送包含抢占指示的媒体接入控制MAC协议数据单元PDU,抢占指示用于指示在第一时间单元的已分配给用户设备的至少部分下行资源被抢占。
其中,媒体接入控制MAC协议数据单元PDU,简称为MAC PDU。MAC PDU可以包括MAC头、MAC CE、MAC SDU组成,其中,MAC头可以由多个MAC子头构成,每个MAC子头和MAC CE以及MAC SDU意义对应,用于指示对应的MAC CE以及MAC SDU的名称(MAC子头中的LCID字段用于表示对应的MAC CE以及MAC SDU的名称)、长度等信息;MAC CE用来承载和无线资源管理相关的控制信息;MAC SDU用于承载数据或信令,一个MAC PDU可以包含0或多个MAC SDU。本实施例中,抢占指示可以中的一个MAC控制元素CE,即MAC CE。可选地,可以新构造一个MAC CE用于承载抢占指示。
在一些实施方式中,可以定义PI指示的LCID,如下表1所示,在一示例中,可以将字段46用于表示包含抢占指示的MAC PDU,具体可以为MAC CE的名称。
表1:Values of LCID for DL-SCH
本实施例中,基站在确定在第一时间单元的已分配给用户设备的至少部分下行资源被抢 占时,向用户设备发送包含抢占指示的媒体接入控制MAC协议数据单元PDU,其中通过MACPDU承载抢占指示,使得用户设备能够及时接收到抢占指示,可以确定被抢占的在第一时间单元的已分配给用户设备的至少部分下行资源,从而可以避免第一用户设备的数据中混入URLLC突发业务的数据而导致的解码错误,进而不必再进行HARQ重传,甚至多次HARQ重传,保障了第一用户设备的数据传输的可靠性的同时减少了资源浪费。
请参阅图15至图16,图15是本申请资源抢占处理方法第八实施例的流程示意图,图16是本申请MACCE的一示意图。
具体而言,资源抢占处理方法第八实施例包括:
步骤S81:确定在第一时间单元的已分配给用户设备的至少部分下行资源被抢占。
本实施例应用于基站侧。用户设备为半双工用户设备和/或能力降低用户设备。
步骤S82:判断用户设备是否在第二时间单元处于上行状态,第二时间单元在第一时间单元之后。
若是,则执行步骤S83;否则,则执行步骤S84。
不同于上述实施例,本实施例中第二时间单元在第一时间单元之后。
若用户设备未在第二时间单元处于上行状态,则说明用户设备可以及时接收到下行控制信息中的抢占指示,从而可以在第二时间单元使用下行控制信息向用户设备发送抢占指示;若用户设备在第二时间单元处于上行状态,则说明用户设备无法及时接收下行控制信息中的抢占指示,从而需要通过MAC PDU发送抢占指示,以使用户设备及时接收抢占指示。
在其他实施方式中,基站还可以获取用户设备信息,并根据用户设备信息确定该用户设备是否能够及时接收到下行控制信息中的抢占指示,其中用户设备信息可以包括能力类型标识和/或设备类型标识,具体内容请参见上述实施例,此处不再赘述。例如,基站获取的设备类型标识为HD-FDD UE,则说明该用户设备无法及时接收到下行控制信息中的抢占指示,从而可以采用MAC PDU发送抢占指示,以保障用户设备数据传输的可靠性。
步骤S83:发送包含抢占指示的MAC PDU。
抢占指示用于指示在第一时间单元的已分配给用户设备的至少部分下行资源被抢占。
步骤S84:在第二时间单元使用下行控制信息向用户设备发送抢占指示。
其中,媒体接入控制MAC协议数据单元PDU包含抢占指示。
在一些实施方式中,基站可以在第二时间单元使用下行控制信息(DCI)向用户设备发送抢占指示。在另一些实施方式中,基站可以在第一时间单元使用未被抢占的下行资源发送包含抢占指示的MAC PDU。
其中,抢占指示包括第一指示符,第一指示符用于表示抢占指示在被抢占的下行资源之前或之后,从而当已分配给用户设备的至少部分下行资源被抢占时,可以在第一时间单元之前(之后)将抢占指示发送至用户设备,用户设备通过其中的第一指示符可以确定该抢占指示用于指示后面(前面)的时间单元的下行资源被抢占。
如图16所示,为MACCE的一示意图,包括两种情况:一种情况(oct1)是,包含第一指示符(Pre-Ind)的抢占指示(Preemption Indication),另一种情况(oct2)是,未包含第一指示符的抢占指示。其中Preemption Indication为14bit,各bit与图11中的各组符号对应,具体可以从高位开始对应,或从低位开始对应。
可选地,第一指示符的大小可以为1比特或多比特。在一些实施方式中,第一指示符为Pre-Ind(1bit),大小为1比特,其值为1表示前置PI指示,其值为0表示后置PI指示。在另一些实施方式中,可以通过判断是否存在包含PI指示的MACCE,若是,则确定为前置PI指示,否则,则确定为后置PI指示。
在一些实施方式中,确定在第一时间单元的已分配给用户设备的至少部分下行资源被抢占之后,还可以在第二时间单元使用下行控制信息向用户设备发送抢占指示,第二时间单元在第一时间单元之后,以考虑其他正常的用户设备的兼容性,保障其他正常的用户设备的正常工作。
请参阅图17,图17是本申请资源抢占处理方法第八实施例的流程示意图。
具体而言,资源抢占处理方法第八实施例包括:
步骤S91:接收来自于基站的包含抢占指示的MACPDU,抢占指示用于指示在第一时间单元的已分配给用户设备的至少部分下行资源被抢占。
本实施例应用于用户设备侧。用户设备可以为半双工用户设备和/或能力降低用户设备。
步骤S92:去除第一时间单元接收的下行传输中使用被抢占的下行资源传输的部分后进行解码。
用户设备接收到来自于基站的包含抢占指示的MACPDU后,可以对MACPDU进行解码,以得到第一时间单元的下行抢占指示信息,根据下行抢占指示信息去除第一时间单元接收的下行传输中使用被抢占的下行资源传输的部分,然后进行解码。
在一些实施方式中,用户设备可以在第二时间单元接收来自于基站的包含在下行控制信息中的抢占指示,第二时间单元在第一时间单元之后。
在一些实施方式中,抢占指示可以包括第一指示符,第一指示符可以用于表示抢占指示在被抢占的下行资源之前或之后。
在一些实施方式中,包含抢占指示的MAC PDU所用的传输资源可以为第一时间单元内未被抢占的下行资源。
在一些实施方式中,抢占指示可以为MAC PDU中的一个MAC CE。
可以理解的,本实施例中的具体内容可参考本申请资源抢占处理方法上述实施例中的描述,在此不再重复。
请参阅图18,图18是本申请资源抢占处理方法多端交互第三实施例的示意图。
资源抢占处理方法多端交互第三实施例可以包括:
1)基站(gNB)确定在第一时间单元的已分配给用户设备的至少部分下行资源被抢占,并构建MACUE(确定在第一时间单元URLLC UE抢占了HD-FDD UE的至少部分资源,构建MAC CE)。
2)基站同时向半双工用户设备和URLLC设备发送包含抢占指示的媒体接入控制MAC协议数据单元PDU,抢占指示用于指示在第一时间单元的已分配给用户设备的至少部分下行资源被抢占。
3)半双工用户设备(HD-FDD UE)接收来自于基站的包含抢占指示的MACPDU。
4)半双工用户设备解码MAC CE,根据解码后的PI指示去除第一时间单元接收的下行传输中使用被抢占的下行资源传输的部分后进行解码。
5)同时,URLLC设备也能够进行解码,并解码成功。
关于上面内容的说明,请参见前述实施例的相应位置,此处不做赘述。
请参阅图19,图19是本申请通信设备第一实施例的结构示意图。
如图19所示,本申请通信设备第一实施例包括:处理器110、存储器120和通信电路130。
处理器110控制通信设备的操作,处理器110还可以称为CPU(Central Processing Unit,中央处理单元)。处理器110可能是一种集成电路芯片,具有信号序列的处理能力。处理器110还可以是通用处理器、数字信号序列处理器(DSP)、专用集成电路(ASIC)、现成可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
存储器120存储处理器110工作所需要的指令和数据。
处理器110用于执行指令以实现本申请应用于基站侧的资源抢占处理方法的上述实施例及可能的组合所提供的方法。
请参阅图20,图20是本申请通信设备第二实施例的结构示意图。
如图20所示,本申请通信设备第二实施例包括:处理器210、存储器220和通信电路230。
处理器210控制通信设备的操作,处理器210还可以称为CPU(Central Processing Unit,中央处理单元)。处理器210可能是一种集成电路芯片,具有信号序列的处理能力。处理器 210还可以是通用处理器、数字信号序列处理器(DSP)、专用集成电路(ASIC)、现成可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
存储器220存储处理器210工作所需要的指令和数据。
处理器210用于执行指令以实现本申请应用于用户设备侧的资源抢占处理方法的上述实施例及可能的组合所提供的方法。
请参阅图21,图21是本申请可读存储介质一实施例的结构示意图。
如图21所示,本申请可读存储介质,存储有指令310,该指令310被处理器执行时实现本申请资源抢占处理方法的实施例及可能的组合所提供的方法。
可读存储介质可以包括只读存储器(ROM,Read-Only Memory)、随机存取存储器(RAM,Random Access Memory)、闪存(Flash Memory)、硬盘、光盘等。
在本申请所提供的几个实施例中,应该理解到,所揭露的方法和装置,可以通过其它的方式实现。例如,以上所描述的装置实施方式仅仅是示意性的,例如,所述模块或单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个***,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施方式方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理包括,也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机装置(可以是个人计算机,服务器,或者网络装置等)或处理器(processor)执行本申请各个实施方式所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(ROM,Read-Only Memory)、随机存取存储器(RAM,Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述仅为本申请的实施方式,并非因此限制本申请的专利范围,凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换,或直接或间接运用在其他相关的技术领域,均同理包括在本申请的专利保护范围内。
Claims (16)
- 一种资源抢占处理方法,所述方法应用于基站侧,其特征在于,所述方法包括:获取超可靠低延迟通信URLLC突发业务的信息;跳过为第一用户设备分配的无线资源确定为所述URLLC突发业务分配抢占的无线资源,所述第一用户设备不允许资源被URLLC突发业务占用。
- 根据权利要求1所述的方法,其特征在于,所述第一用户设备为半双工用户设备和/或能力降低用户设备。
- 根据权利要求1所述的方法,其特征在于,所述第一用户设备不允许上行资源和/或下行资源被URLLC突发业务占用。
- 根据权利要求1所述的方法,其特征在于,所述跳过为第一用户设备分配的无线资源确定为所述URLLC突发业务分配抢占的无线资源之前进一步包括:获取所述第一用户设备的信息;根据所述第一用户设备的信息确定所述第一用户设备不允许资源被URLLC突发业务占用。
- 根据权利要求4所述的方法,其特征在于,所述第一用户设备的信息包括所述第一用户设备的能力信息,所述第一用户设备的能力信息包括用于表示所述第一用户设备不允许资源被URLLC突发业务占用的标识。
- 根据权利要求4所述的方法,其特征在于,所述第一用户设备的信息包括用于表示所述第一用户设备不允许资源被URLLC突发业务占用的专用标识。
- 根据权利要求6所述的方法,其特征在于,所述专用标识由无线接入控制RRC消息承载。
- 一种资源抢占处理方法,所述方法应用于用户设备侧,其特征在于,所述方法包括:向基站发送用户设备信息,所述用户设备信息用于指示所述用户设备不允许资源被URLLC突发业务占用。
- 根据权利要求8所述的方法,其特征在于,所述用户设备为半双工用户设备和/或能力降低用户设备。
- 根据权利要求8所述的方法,其特征在于,所述用户设备不允许上行资源和/或下行资源被所述URLLC突发业务占用。
- 根据权利要求8所述的方法,其特征在于,所述用户设备信息包括所述用户设备的能力信息,所述用户设备的能力信息包括用于表示所述用户设备不允许资源被URLLC突发业务占用的标识。
- 根据权利要求8所述的方法,其特征在于,所述用户设备信息包括用于表示所述用户设备不允许资源被URLLC突发业务占用的专用标识。
- 根据权利要求12所述的方法,其特征在于,所述专用标识由无线接入控制RRC消息承载。
- 一种通信设备,其特征在于,包括:处理器、存储器和通信电路,所述处理器连接所述通信电路;所述存储器存储有指令,所述处理器用于执行所述指令以实现如权利要求1-7任一项所述的方法。
- 一种通信设备,其特征在于,包括:处理器、存储器和通信电路,所述处理器连接所述通信电路;所述存储器存储有指令,所述处理器用于执行所述指令以实现如权利要求8-13任一项所 述的方法。
- 一种可读存储介质,存储有指令,其特征在于,所述指令被处理器执行时实现如权利要求1-13任一项所述的方法。
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