WO2022147771A1 - Procédé de détermination de programmation de ressources, appareil et support de stockage - Google Patents

Procédé de détermination de programmation de ressources, appareil et support de stockage Download PDF

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Publication number
WO2022147771A1
WO2022147771A1 PCT/CN2021/070891 CN2021070891W WO2022147771A1 WO 2022147771 A1 WO2022147771 A1 WO 2022147771A1 CN 2021070891 W CN2021070891 W CN 2021070891W WO 2022147771 A1 WO2022147771 A1 WO 2022147771A1
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Prior art keywords
communication system
threshold
load
communication
resource scheduling
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PCT/CN2021/070891
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English (en)
Chinese (zh)
Inventor
顾昕钰
赵振山
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Oppo广东移动通信有限公司
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Priority to PCT/CN2021/070891 priority Critical patent/WO2022147771A1/fr
Priority to CN202180069297.5A priority patent/CN116326094A/zh
Publication of WO2022147771A1 publication Critical patent/WO2022147771A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H04W48/06—Access restriction performed under specific conditions based on traffic conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the embodiments of the present application relate to the technical field of sideline communication, and in particular, to a method, an apparatus, and a storage medium for determining resource scheduling.
  • D2D communication technology refers to a communication method in which two or more peer user equipments communicate directly.
  • each user equipment can send and receive signals, and Has the function of automatic routing (forwarding messages).
  • WiFi Wireless Fidelity, wireless fidelity technology
  • CSMA/CA Carrier Sense Multiple Access with Collision Avoid, that is, carrier sense multiple access with collision avoidance
  • D2D-U Device-to-Device Communication in the Unlicensed Spectrum, D2D in the unlicensed frequency band
  • D2D in the unlicensed frequency band selects a channel by using listen-before-talk (listen-before-talk, LBT) mechanism, that is, monitoring is performed before accessing a channel, and an idle channel is selected for access.
  • listen-before-talk listen-before-talk
  • D2D-U devices use the LBT competition mechanism to ensure that WiFi devices can access the channel
  • each D2D-U device uses the LBT competition mechanism for channel idle detection, which is prone to resource collisions and waste, greatly reducing the success rate of D2D-U and WiFi devices accessing the channel, and the channel utilization rate is low.
  • Embodiments of the present application provide a method, an apparatus, and a storage medium for determining resource scheduling, so as to improve the utilization rate of channel resources.
  • an embodiment of the present application provides a method for determining resource scheduling, which is applied to a first communication device.
  • the method includes: acquiring the load conditions of the first communication system and the second communication system, the first communication system and the The second communication system uses an unlicensed frequency band for data communication; according to the load conditions of the first communication system and the second communication system, a resource scheduling strategy is determined.
  • an embodiment of the present application provides a communication device, including: an acquisition module configured to acquire the load conditions of a first communication system and a second communication system, where both the first communication system and the second communication system use The unlicensed frequency band is used for data communication; the processing module is configured to determine a resource scheduling strategy according to the load conditions of the first communication system and the second communication system.
  • an embodiment of the present application provides a communication device, including: a memory and a processor, where the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that all The processor runs the computer program to perform the method according to any one of the first aspects of the present application.
  • an embodiment of the present application provides a computer storage medium for storing a computer program, and when the computer program runs on a computer, the computer is made to execute the method described in any one of the first aspect of the present application. method.
  • an embodiment of the present application provides a computer program, which, when executed by a processor, is used to execute the method according to any one of the first aspect of the present application.
  • an embodiment of the present application provides a computer program product, which, when the computer program product runs on a computer, causes the computer to execute the method according to any one of the first aspects of the present application.
  • an embodiment of the present application provides a chip, comprising: a processing module and a communication interface, the processing module is configured to call from a memory and run a computer program stored in the memory, and execute the program as described in the first aspect of the present application. The method of any one.
  • the embodiments of the present application provide a method, an apparatus, and a storage medium for determining resource scheduling.
  • the resource scheduling is determined according to the load conditions of the first communication system and the second communication system.
  • Strategy If the load of the first communication system is less than the first threshold, and/or the load of the second communication system is greater than or equal to the second threshold, it is determined to adopt the first resource scheduling strategy in the frequency domain and then the time domain. If the load is greater than or equal to the first threshold, and/or the load of the second communication system is less than the second threshold, it is determined to adopt the second resource scheduling strategy in the time domain and then the frequency domain.
  • the above solution can reduce the impact of the first communication system on the second communication system as much as possible while making full use of channel resources.
  • FIG. 1 is a schematic diagram of grouping of a D2D-U device according to an embodiment of the present application
  • FIG. 2 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of a method for determining resource scheduling provided by an embodiment of the present application
  • FIG. 4 is a schematic structural diagram of a channel resource provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a resource scheduling strategy provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a resource scheduling strategy provided by an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram of a hardware structure of a communication device according to an embodiment of the present application.
  • the "instruction" mentioned in the embodiments of the present application may be a direct instruction, an indirect instruction, or an associated relationship.
  • a indicates B it can indicate that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indicates B indirectly, such as A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
  • D2D refers to direct communication between user communication devices within a certain distance, without the need for relaying by base stations. Compared with direct communication technologies such as Bluetooth and Wi-Fi, D2D has more advantages and flexibility. It can communicate under the control of the base station or without network infrastructure. D2D can reduce the burden on cellular networks, reduce battery power consumption of mobile terminals, increase bit rates, improve robustness to network infrastructure failures, support new small-scale peer-to-peer data services, and more.
  • LTE in Unlicensed Spectrum LTE-U
  • LAA Licensed Assisted Access
  • WiFi devices use CSMA/CA to access and select channels, and the core is the LBT mechanism.
  • the D2D-U device In order not to interfere with existing Wi-Fi devices, the D2D-U device also adopts the LBT mechanism when selecting a channel, that is, it monitors before accessing a channel and selects an idle channel for access.
  • the embodiment of the present application proposes a resource scheduling scheme based on a communication group, and divides multiple D2D-U devices into the same communication group based on distance ( Or called group, cluster), the group head (cluster header, or called cluster head) of the communication group performs channel detection and competition, and after obtaining channel resources, allocates time-frequency to other D2D-U devices in the communication group Domain resources, the scheduling scheme can effectively reduce the number of adjacent competitors on the same channel, reduce the collision probability, and improve channel utilization.
  • FIG. 1 is a schematic diagram of a grouping of D2D-U devices provided by an embodiment of the present application.
  • a large number of D2D-U devices are distributed in a cell covered by a base station, and D2D-U devices with similar locations are grouped together.
  • D2D devices whose mutual distance value is less than the preset distance are grouped into the same communication group.
  • a group head device is selected from all D2D-U devices in each communication group through the set selection strategy.
  • the cell base station may determine the group head device of the communication group.
  • Channel State Information Channel State Information
  • the purpose of grouping D2D-U devices is to group D2D-U devices that may interfere with each other into the same communication group, and the group head device represents this communication group to perform channel competition and resource allocation, so as to avoid intra-group communication. interference, and avoid excessive D2D-U device competition, which will seriously degrade WiFi performance.
  • the group head device of the communication group uses the LBT mechanism for channel detection and competition. After obtaining the right to use the channel, it needs to allocate time-frequency domain resources to other D2D-U devices in the communication group. How to allocate can improve channel utilization, and how to allocate It is an urgent problem to be able to reduce the interference to the WiFi system as much as possible.
  • an embodiment of the present application proposes a method for determining resource scheduling, which can be applied to a D2D device unlicensed frequency band communication scenario.
  • the inventor considers that the loads of the D2D-U system and the WiFi system usually change dynamically.
  • the load of the two communication systems is not balanced.
  • the resource scheduling strategy in the D2D-U communication group dynamically adjust the resource scheduling strategy in the D2D-U communication group, and reduce the impact on the WiFi system as much as possible while improving the channel utilization rate.
  • the embodiment of the present application provides two resource scheduling strategies: one is a first resource scheduling strategy in the frequency domain and then the time domain, and the other is a second resource scheduling strategy in the time domain and then the frequency domain.
  • the first resource scheduling strategy can be adopted; when the WiFi system load is low and/or the D2D-U system load is high, the second resource scheduling strategy can be adopted.
  • the above-mentioned resource scheduling scheme can be applied to D2D-U devices, and can also be applied to network devices, such as base stations.
  • FIG. 2 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
  • the system architecture provided by this embodiment includes: a network device 101 , and multiple network devices within the coverage of the network device 101 .
  • Terminal devices such as the terminal devices 102 to 106 shown in FIG. 2 , and the WiFi access device 107 .
  • the terminal devices 102, 103, and 104 are D2D-U devices in the same communication group.
  • the terminal device 102 may send a communication message to the terminal device 103 or 104 through the network device 101 .
  • the terminal device 102 may also directly send a communication message to the terminal device 103 or 104 .
  • the link for direct communication between the terminal device 102 and the terminal device 103 or 104 is called a D2D link, and may also be called a proximity service (proximity service, ProSe) link, a side link, or the like.
  • D2D links can provide new services, increase system throughput, and provide a better user experience, facilitating interoperability between critical public safety networks and pervasive commercial networks.
  • the terminal devices 105 and 106 are within the coverage of the WiFi access device 107 and can access the core network through the WiFi access device 107 .
  • the terminal devices 105 and 106 can also access the core network through the network device 101 .
  • the terminal device involved in the embodiments of this application may also be referred to as a terminal, which may be a device with a wireless transceiver function, which may be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; it may also be deployed on water (such as ships, etc.); can also be deployed in the air (such as on airplanes, balloons, satellites, etc.).
  • the terminal device may be a user equipment (user equipment, UE), wherein the UE includes a handheld device, a vehicle-mounted device, a wearable device or a computing device with a wireless communication function.
  • the UE may be a mobile phone, a tablet computer, or a computer with a wireless transceiver function.
  • the terminal device can also be a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, intelligent Wireless terminals in power grids, wireless terminals in smart cities, wireless terminals in smart homes, and so on.
  • the device for realizing the function of the terminal may be a terminal; it may also be a device capable of supporting the terminal to realize the function, such as a chip system, and the device may be installed in the terminal.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the network device involved in the embodiments of the present application includes a base station (base station, BS), which may be a device deployed in a wireless access network and capable of wirelessly communicating with a terminal.
  • the base station may have various forms, such as a macro base station, a micro base station, a relay station, and an access point.
  • the base station involved in the embodiment of the present application may be a base station in 5G or a base station in LTE, where the base station in 5G may also be called a transmission reception point (transmission reception point, TRP) or gNB.
  • the apparatus for implementing the function of the network device may be a network device; it may also be an apparatus capable of supporting the network device to implement the function, such as a chip system, and the apparatus may be installed in the network device.
  • the technical solutions of the embodiments of the present application are mainly applied to communication systems based on New Radio (NR) technology, such as 5th generation mobile networks (5G for short) communication systems, NR-light systems, and the like. It can also be applied to other communication systems, as long as there is resource scheduling between entities in the communication system, for example, it can be applied to resource scheduling between network equipment and terminal equipment, or resource scheduling between two terminal equipment, One of the terminal devices assumes the function of accessing the network, etc.
  • NR New Radio
  • the communication system can be, for example: a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (Code Division Multiple Access, CDMA) system, a Wideband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (Long Term Evolution, LTE) system, Advanced Long Term Evolution LTE-A (LTE Advanced) system, LTE Frequency Division Duplex (Freq Terminal Equipment) ncy Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), etc.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution LTE-A
  • LTE Frequency Division Duplex Frequency Division Duplex
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile
  • FIG. 3 is a schematic flowchart of a method for determining resource scheduling provided by an embodiment of the present application. As shown in FIG. 3 , the determination method provided in this embodiment may be applied to the first communication device of the first communication system, where the first communication device may be the network device shown in FIG. 1 , or the D2D shown in FIG. 2 . equipment.
  • the method includes the following steps:
  • Step 201 Acquire the load conditions of the first communication system and the second communication system.
  • the first communication system and the second communication system both use unlicensed frequency bands for data communication.
  • the load condition of the communication system is used to indicate the number of load devices, the amount of data transmission, etc. in the communication system.
  • the first communication system is a D2D system
  • the second communication system is a WiFi system
  • the first communication device of the first communication system is a D2D device. Since the first communication system uses an unlicensed spectrum for data communication, the first communication device is also called a D2D-U device.
  • the first communication device is a group head terminal device of any communication group in the D2D system. The first communication device performs channel detection and competition, and after obtaining channel resources, allocates time-frequency domains to other communication devices in the communication group. resource.
  • the communication device of the second communication system is a WiFi device.
  • the first communication system is an LTE-U system
  • the second communication system is a WiFi system
  • the first communication device of the first communication system may be a network device of the LTE-U system, such as a base station.
  • the communication device of the second communication system is a WiFi device.
  • first communication system and the second communication system in this embodiment may also be other communication systems using an unlicensed frequency band, which is not limited in this embodiment.
  • the first communication device of the first communication system competes with the communication device of the second communication system for the right to use the channel. After obtaining the right to use the channel, the first communication device can perform fine-grained division of the channels, and each channel occupies The duration COT may be divided into multiple time units and multiple frequency domain units, and after the resource scheduling policy determined in step 302 is used, time-frequency domain resources are allocated to other communication devices in the first communication system.
  • FIG. 4 is a schematic structural diagram of a channel resource provided by an embodiment of the present application.
  • the channel use right is obtained. It is assumed that The longest channel occupied time is COT, and the channel bandwidth is W.
  • the first communication device divides the time-frequency domain resources in a fine-grained manner: the time domain is divided according to time slots and divided into 4 time slots as shown in Figure 4; the frequency domain is divided according to The preset bandwidth is divided into 5 sub-channels as shown in FIG. 4 .
  • the time unit in this embodiment may be a radio frame, subframe, time slot, etc., which is not limited in this embodiment.
  • the frequency domain unit in this embodiment may be a resource block RB, a resource block group (RB group, RBG), a subchannel (subchannel), etc., where the RBG includes multiple RBs, and the subchannel includes multiple consecutive RBGs. This embodiment does not impose any limitation on the frequency domain unit.
  • Step 202 Determine a resource scheduling policy according to the load conditions of the first communication system and the second communication system.
  • the first resource scheduling strategy can be adopted; or, if the load of the first communication system is high and the load of the second communication system is low, the first resource scheduling strategy can be adopted; or, If the load of the second communication system is low, the first resource scheduling strategy may be adopted.
  • the first resource scheduling strategy is to schedule different frequency domain resources of the same time unit until all the frequency domain resources of the time unit are allocated, and then schedule the frequency domain resources of the next time unit adjacent to the time unit.
  • the first resource scheduling strategy is a resource scheduling strategy in the frequency domain and then the time domain.
  • the first communication device may schedule the time-frequency domain resources shown in FIG. 4 to other communication devices in the first communication system.
  • the first communication device allocates resources to other communication devices of the first communication system, it tries to schedule the communication devices on different sub-channels of the same time slot, and does not start scheduling the next time slot until all the sub-channels of the time slot have been allocated. gap.
  • FIG. 5 is a schematic diagram of a resource scheduling strategy provided by an embodiment of the present application.
  • the first communication device schedules 5 communication devices on different sub-channels of the first time slot, such as the 5 sub-channels of time slot 1 in Fig. 5, since all sub-channels of the first time slot have been allocated,
  • the sixth communication device is scheduled in one of the subchannels of the next time slot, such as subchannel 5 of time slot 2 in FIG. 5 .
  • one sub-channel may be randomly selected from the five sub-channels in the next time slot and allocated to the sixth communication device.
  • one sub-channel with the best channel quality may be selected from the 5 sub-channels in the next time slot according to the channel quality.
  • the first resource scheduling strategy is a scheduling strategy in the frequency domain and then in the time domain, and the scheduling strategy can reduce the waiting time of a communication device in the first communication system, such as a D2D-U device, and reduce the impact on the second communication system. impact on system performance.
  • the WiFi device can take away the channel use right in the time unit where no communication device is allocated, so that The first communication system cannot fully utilize the frequency domain resources of the COT duration, but has little impact on the access of the WiFi device.
  • the second threshold can be determined to adopt the second resource scheduling policy. That is, if the load of the first communication system is low, the second resource scheduling strategy can be adopted; or, if the load of the first communication system is low and the load of the second communication system is high, the second resource scheduling strategy can be adopted; or, If the load of the second communication system is high, the second resource scheduling strategy may be adopted.
  • the eighth threshold and the first threshold may be the same, and the ninth threshold and the second threshold may be the same. In some embodiments, the eighth threshold may be greater than the first threshold, and the ninth threshold may be less than the second threshold.
  • the second resource scheduling strategy is to schedule different time units of the same frequency domain unit until all time units of the channel occupation duration COT of the frequency domain unit are allocated, and then schedule other frequency domain units.
  • the second resource scheduling strategy is a resource scheduling strategy in which the time domain is first followed by the frequency domain.
  • the first communication device may schedule the time-frequency domain resources shown in FIG. 4 to other communication devices in the first communication system.
  • the first communication device tries to schedule the communication devices in different time slots of the same sub-channel, and does not start to schedule other sub-channels until all the time slots of the COT are occupied.
  • FIG. 6 is a schematic diagram of a resource scheduling strategy provided by an embodiment of the present application.
  • the first communication device schedules 4 communication devices in different time slots of the same subchannel, for example, the 4 time slots of subchannel 5 in FIG.
  • the communication device is scheduled on other subchannels, for example, time slot 1 of subchannel 3 in FIG. 6 , or other time slots of subchannel 3 .
  • the remaining two communication devices are allocated to different time slots of the same subchannel, for example, time slot 1 and time slot 2 of subchannel 3 in FIG. 6 .
  • the remaining two communication devices are allocated to different sub-channels of the same time slot, for example, sub-channel 2 and sub-channel 3 of time slot 2 in FIG. 6 .
  • the second resource scheduling strategy is a scheduling strategy in which the time domain is first followed by the frequency domain.
  • This scheduling strategy can make full use of the COT duration to ensure that the WiFi device does not steal the channel use right as much as possible within the COT duration.
  • Communication devices of the first communication system within which the data is generated have more opportunities to use this COT duration.
  • the first communication device learns that there is a communication device that has data to be transmitted in the first communication system, under the second resource scheduling strategy of the time domain first and the frequency domain, the first communication device can notify The communication device to transmit data uses the channel resources of the fourth time slot, but under the first resource scheduling strategy of the frequency domain first and then the time domain, if the WiFi device of the second communication system competes for the channel in the third time slot, then The channel resource of the fourth time slot is very likely to be preempted by the WiFi device, so that the channel resource cannot be allocated to the communication device that is to transmit data in the first communication system.
  • the resource scheduling policy is determined according to the load conditions of the first communication system and the second communication system by acquiring the load conditions of the first communication system and the second communication system. If the load of the first communication system is less than the first threshold, and/or the load of the second communication system is greater than or equal to the second threshold, it is determined to adopt the first resource scheduling strategy in the frequency domain and then the time domain; If the load of the system is greater than or equal to the first threshold, and/or the load of the second communication system is less than the second threshold, it is determined to adopt the second resource scheduling strategy in the time domain and then the frequency domain.
  • the above method can reduce the impact of the first communication system on the second communication system as much as possible while making full use of time-frequency domain resources.
  • the following describes in detail how the first communication device acquires the load of the first communication system in the foregoing embodiments through several specific embodiments.
  • the first communication device may determine the load situation of the first communication system through the following two implementation manners or a combination of the two implementation manners.
  • the first communication device acquires the load condition of the first communication system through information interaction with at least one second communication device. Both the first communication device and the second communication device for information exchange belong to the first communication system.
  • the first communication system is a D2D system
  • the first communication device and at least one second communication device are in the same communication group
  • the first communication device is a group head terminal device of the communication group
  • at least one second communication device is a communication group other end devices of the group.
  • the first communication system is an LTE/D2D system
  • the first communication device is a network device of the LTE/D2D system, such as a base station
  • at least one second communication device is a communication device/D2D within the coverage of the first communication device equipment.
  • the first communication device acquires the load condition of the first communication system through information interaction with at least one second communication device, including: the first communication device receives feedback information from each second communication device , the feedback information is used to indicate the amount of data to be transmitted by each second communication device, and the load condition of the first communication system is determined according to the feedback information of each second communication device.
  • the first threshold includes a third threshold
  • the first communication device determines a total data volume of data to be transmitted by at least one second communication device, and determines the first communication system according to the total data volume and the third threshold load situation.
  • the third threshold it is determined that the load of the first communication system is high; or, if the total data amount is less than the third threshold, it is determined that the load of the first communication system is low.
  • the load of the first communication system is determined by acquiring the total data volume of data to be transmitted by at least one second communication device interacting with the first communication device, and the total data volume can be used to characterize the load level of the first communication system. .
  • the first communication device acquires the number of devices of the first communication system, and determines the load condition of the first communication system according to the number of devices.
  • the first communication system is a D2D system
  • the first communication device and at least one second communication device are in the same communication group
  • the first communication device is a group head terminal device of the communication group
  • at least one second communication device is a communication group other end devices of the group.
  • Acquiring the number of devices of the first communication system by the first communication device includes: acquiring the number of devices of the second communication device in the same communication group as the first communication device in the first communication system by the first communication device.
  • the first communication system is an LTE/D2D system
  • the first communication device is a network device of the LTE/D2D system, such as a base station
  • at least one second communication device is a terminal device/D2D within the coverage of the first communication device equipment.
  • Obtaining the device quantity of the first communication system by the first communication device includes: the first communication device obtaining the device quantity of the second communication device within the coverage area of the first communication device in the first communication system.
  • the first threshold includes a fourth threshold
  • the first communication device determines the load condition of the first communication system according to the number of devices in the first communication system, including: the first communication device according to the first communication system.
  • the number of devices in the system and the fourth threshold determine the load condition of the first communication system.
  • the number of devices is greater than or equal to the fourth threshold, it is determined that the load of the first communication system is high; or, if the number of devices is less than the fourth threshold, it is determined that the load of the first communication system is low.
  • the load condition of the first communication system is determined by acquiring the number of devices of the second communication device communicatively connected to the first communication device, and the number of devices can be used to characterize the load level of the first communication system.
  • the first communication device obtains the total amount of data to be transmitted by at least one second communication device in the first communication system through information interaction with at least one second communication device, and at the same time obtains the first communication device.
  • the number of devices of the second communication device in the communication system determines the load condition of the first communication system according to the total data volume and the number of devices.
  • the first threshold includes a third threshold and a fourth threshold. If the total data volume is greater than or equal to the third threshold, and the number of devices is greater than or equal to the fourth threshold, it is determined that the load of the first communication system is high , otherwise it is determined that the load of the first communication system is low. Or, if the total data amount is less than the third threshold and the number of devices is less than the fourth threshold, it is determined that the load of the first communication system is low; otherwise, it is determined that the load of the first communication system is high.
  • the first communication system is jointly determined by acquiring the total data volume of data to be transmitted of at least one communication device interacting with the first communication device and the number of devices of the second communication device communicatively connected with the first communication device. load situation.
  • the embodiment of the present application proposes a solution for estimating the load situation of the second communication system.
  • the following describes in detail how the first communication device acquires the load of the second communication system in the above-mentioned embodiments through several specific embodiments.
  • the first communication device can obtain parameter information for competing with the communication device of the second communication system for channel resources by executing the listen-before-send LBT mechanism, the parameter information is used to indicate the degree of channel resource competition, and the parameter information of the second communication system is determined according to the parameter information. load situation.
  • the parameter information includes at least one of the following:
  • the counter may be suspended because the channel resources are occupied.
  • the parameter information includes the number of times the counter is suspended during the LBT execution within a preset period
  • the first communication device determines the load of the second communication system according to the parameter information, including: the first communication device The load condition of the second communication system is determined according to the number of times the counter is suspended and the fifth threshold.
  • the load of the second communication system is high; or if the number of times the counter is suspended is less than the fifth threshold, it is determined that the load of the second communication system is low.
  • the first communication device obtains the number of times the counter is suspended, and the number of times the counter is suspended can be used to represent the number of times the second communication system preempts channel resources.
  • the parameter information includes a period of time during which the counter is suspended during the execution of LBT within a preset period
  • the first communication device determines the load of the second communication system according to the parameter information, including: the first communication device The load condition of the second communication system is determined according to the suspension period of the counter and the sixth threshold.
  • the counter is suspended for a duration greater than or equal to the sixth threshold, it is determined that the load of the second communication system is high; or, if the counter is suspended for less than the sixth threshold, it is determined that the load of the second communication system is low.
  • the first communication device obtains the suspended duration of the counter, and the suspended duration of the counter can be used to represent the duration of the second communication system preempting channel resources. The longer the duration, the higher the load of the second communication system.
  • the parameter information includes an average value of the duration from performing LBT to obtaining the channel use right within a preset period
  • the first communication device determines the load of the second communication system according to the parameter information, including: the first communication The device determines the load condition of the second communication system according to the average value of the duration of obtaining the channel use right and the seventh threshold.
  • the average value of the duration of obtaining the channel use right is greater than or equal to the seventh threshold, it is determined that the load of the second communication system is high; or, if the average value of the duration of obtaining the channel use right is less than the seventh threshold, it is determined that the second communication system has a high load. System load is low.
  • the first communication device counts the average value of the duration from performing LBT to obtaining the channel use right within a preset time period.
  • the load of the communication system is high and low.
  • the parameter information includes two or more of the above parameter information
  • the first communication device determines the load condition of the second communication system according to the two or more parameter information.
  • the parameter information includes the number of times the counter is suspended during the LBT execution within the preset period, and the duration of the counter suspension during the LBT execution within the preset period.
  • the first communication device determines the load condition of the second communication system according to the number of times the counter is suspended and the time period for which the counter is suspended.
  • the number of times the counter is suspended is greater than or equal to the fifth threshold, and the duration of the counter being suspended is greater than or equal to the sixth threshold, it is determined that the load of the second communication system is high; otherwise, it is determined that the load of the second communication system is low .
  • the number of times the counter is suspended is less than the fifth threshold and the duration of the counter being suspended is less than the sixth threshold, it is determined that the load of the second communication system is low; otherwise, it is determined that the load of the second communication system is high.
  • the parameter information includes the number of times the counter is suspended in the process of performing LBT within a preset period, and the average value of the duration from performing LBT to obtaining the channel use right within the preset period.
  • the first communication device determines the load condition of the second communication system according to the number of times the counter is suspended and the average value of the duration of obtaining the channel use right.
  • the load of the second communication system is high; otherwise, it is determined that the second communication system load is low.
  • the number of times the counter is suspended is less than the fifth threshold, and the average value of the duration of obtaining the channel use right is less than the seventh threshold, it is determined that the load of the second communication system is low; otherwise, the load of the second communication system is determined to be high.
  • the parameter information includes the duration that the counter is suspended in the process of performing LBT within a preset period, and the average value of the duration from performing LBT to obtaining the channel use right within the preset period.
  • the first communication device determines the load condition of the second communication system according to the time period for which the counter is suspended and the average value of the time periods for obtaining the channel use right.
  • the duration of the counter being suspended is greater than or equal to the sixth threshold, and the average value of the duration of obtaining the channel use right is greater than or equal to the seventh threshold, it is determined that the load of the second communication system is high, otherwise, it is determined that the second communication system load is low.
  • the suspended duration of the counter is less than the sixth threshold, and the average value of the duration of obtaining the channel use right is less than the seventh threshold, it is determined that the load of the second communication system is low; otherwise, the load of the second communication system is determined to be high.
  • the first communication device competes with the communication device of the second communication system for channel resources by executing LBT, and can count the number of times the counter is suspended due to the channel being occupied during the process of executing LBT within a period of time,
  • the duration, or, the average value of the duration from the start of LBT execution to the acquisition of the channel use right in a period of time, according to the combination of the above three statistical parameters, or, one or both of them, to estimate the load of the second communication system, if If the values of the above three statistical parameters are relatively large, it can be determined that the load of the second communication system is high.
  • the first communication device determines the resource scheduling strategy to be used according to the estimated loads of the first communication system and the second communication system.
  • the first communication system as a D2D-U system and the second communication system as a WiFi system as an example
  • the resource scheduling in the frequency domain first and then the time domain is preferentially used.
  • Strategy; when the load of the WiFi system is low and the load of the D2D-U system is high, the resource scheduling strategy of the time domain first and then the frequency domain is preferentially adopted.
  • the above resource scheduling scheme can reduce the impact on the WiFi system as much as possible while making full use of channel resources.
  • the thresholds in the foregoing embodiments may be pre-configured or network-configured.
  • FIG. 7 is a schematic structural diagram of a communication apparatus provided by an embodiment of the present application. As shown in FIG. 7 , the communication apparatus 300 provided by this embodiment includes:
  • an obtaining module 301 configured to obtain the load conditions of a first communication system and a second communication system, wherein both the first communication system and the second communication system use an unlicensed frequency band for data communication;
  • the processing module 302 is configured to determine a resource scheduling policy according to the load conditions of the first communication system and the second communication system.
  • processing module 302 is specifically configured to:
  • the load of the first communication system is greater than or equal to the first threshold, and/or the load of the second communication system is less than the second threshold, it is determined to adopt a second resource scheduling strategy.
  • the first threshold or the second threshold is pre-configured or network-configured.
  • the resource scheduling policy includes a first resource scheduling policy, and the first resource scheduling policy is a scheduling policy in the frequency domain and then the time domain.
  • the resource scheduling policy includes a second resource scheduling policy, and the second resource scheduling policy is a scheduling policy in the time domain and then the frequency domain.
  • the first communication device is a network device or a terminal device in the first communication system.
  • the terminal device is a group head terminal device of any communication group in the first communication system.
  • the obtaining module 301 is specifically configured to obtain the load condition of the first communication system through information interaction with at least one second communication device.
  • the at least one second communication device is within the coverage of the first communication device, or the at least one second communication device and the first communication device are in the same communication group .
  • FIG. 8 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the communication device provided by this embodiment further includes: a receiving module 303;
  • the receiving module 303 is configured to receive feedback information from each of the at least one second communication device, where the feedback information is used to indicate the amount of data to be transmitted by each of the second communication devices ;
  • the processing module 302 is configured to determine the load condition of the first communication system according to the feedback information of each of the second communication devices.
  • the first threshold includes a third threshold
  • the processing module 302 is specifically configured to:
  • the load condition of the first communication system is determined according to the total data amount and the third threshold.
  • processing module 302 is specifically configured to:
  • the obtaining module 301 is specifically configured to obtain the number of devices of the first communication system
  • the processing module 302 is specifically configured to determine the load condition of the first communication system according to the number of the devices.
  • the obtaining module 301 is specifically used for:
  • the first threshold includes a fourth threshold
  • the processing module 302 is specifically configured to:
  • the load condition of the first communication system is determined according to the number of devices and the fourth threshold.
  • processing module 302 is specifically configured to:
  • the obtaining module 301 is specifically configured to obtain parameter information for competing with a communication device of the second communication system for channel resources by implementing a listen-before-send LBT mechanism. to indicate the level of competition for channel resources;
  • the processing module 302 is specifically configured to determine the load condition of the second communication system according to the parameter information.
  • the parameter information includes at least one of the following:
  • the parameter information includes the number of times the counter is suspended in the process of executing the LBT within a preset period, and the second threshold includes a fifth threshold; the processing module 302 specifically uses At:
  • the load condition of the second communication system is determined according to the number of times the counter is suspended and the fifth threshold.
  • processing module 302 is specifically configured to:
  • the parameter information includes a period of time during which the counter is suspended during the execution of the LBT within a preset time period, and the second threshold includes a sixth threshold; the processing module 302 specifically uses At:
  • the load condition of the second communication system is determined according to the suspension period of the counter and the sixth threshold.
  • processing module 302 is specifically configured to:
  • the parameter information includes an average value of the duration from executing the LBT to obtaining the channel use right within a preset time period, and the second threshold includes a seventh threshold; the processing module 302, Specifically for:
  • the load condition of the second communication system is determined according to the average value of the duration of obtaining the channel use right and the seventh threshold.
  • processing module 302 is specifically configured to:
  • the average value of the duration of obtaining the channel use right is less than the seventh threshold, it is determined that the load of the second communication system is low.
  • the communication apparatus provided in the embodiment of the present application is configured to execute the technical solution executed by the first communication device in any of the foregoing method embodiments, and the implementation principle and technical effect thereof are similar, and details are not described herein again.
  • each module of the communication apparatus is only a division of logical functions, and in actual implementation, it may be fully or partially integrated into one physical entity, or may be physically separated.
  • these modules can all be implemented in the form of software calling through processing elements; they can also all be implemented in hardware; some modules can also be implemented in the form of calling software through processing elements, and some modules can be implemented in hardware.
  • the processing module may be a separately established processing element, or may be integrated into a certain chip of the above-mentioned device to be implemented, in addition, it may also be stored in the memory of the above-mentioned device in the form of program code, and a certain processing element of the above-mentioned device Call and execute the function of the above determined module.
  • the implementation of other modules is similar.
  • all or part of these modules can be integrated together, and can also be implemented independently.
  • the processing element described here may be an integrated circuit with signal processing capability.
  • each step of the above-mentioned method or each of the above-mentioned modules can be completed by an integrated logic circuit of hardware in the processor element or an instruction in the form of software.
  • the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more application specific integrated circuits (ASIC), or one or more microprocessors (digital) signal processor, DSP), or, one or more field programmable gate arrays (field programmable gate array, FPGA), etc.
  • ASIC application specific integrated circuits
  • DSP digital signal processor
  • FPGA field programmable gate array
  • the processing element may be a general-purpose processor, such as a central processing unit (central processing unit, CPU) or other processors that can call program codes.
  • these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip
  • the above-mentioned embodiments it may be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • software it can be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated.
  • the computer may be a general purpose computer, special purpose computer, computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center is by wire (eg, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media.
  • the usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media (eg, solid state disks (SSDs)), and the like.
  • FIG. 9 is a schematic diagram of a hardware structure of a communication device according to an embodiment of the present application.
  • the communication device 400 in this embodiment may include: a processor 401 , a memory 402 and a communication interface 403 .
  • the memory 402 is used for storing a computer program; the processor 401 is used for executing the computer program stored in the memory 402 to implement the method executed by the first communication device in any of the above method embodiments.
  • the communication interface 403 is used for data communication or signal communication with other communication devices.
  • the memory 402 may be independent or integrated with the processor 401 .
  • the communication device 400 may further include: a bus 404 for connecting the memory 402 and the processor 401 .
  • the processing module 302 may be integrated in the processor 401 to be implemented, and the acquisition module 301 and the receiving module 303 may be integrated in the communication interface 403 to be implemented.
  • the processor 401 can be used to implement the signal processing operation of the first communication device in the above method embodiment
  • the communication interface 403 can be used to implement the signal transceiving operation of the first communication device in the above method embodiment.
  • the communication device provided in this embodiment can be used to execute the method executed by the first communication device in any of the above method embodiments, and its implementation principle and technical effect are similar, and details are not described herein again.
  • Embodiments of the present application further provide a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, are used to implement the first method in any of the foregoing method embodiments.
  • the embodiments of the present application further provide a computer program, which, when the computer program is executed by a processor, is used to execute the technical solution of the first communication device in any of the foregoing method embodiments.
  • Embodiments of the present application further provide a computer program product, including program instructions, where the program instructions are used to implement the technical solution of the first communication device in any of the foregoing method embodiments.
  • Embodiments of the present application further provide a chip, including: a processing module and a communication interface, where the processing module can execute the technical solutions of the first communication device in the foregoing method embodiments.
  • the chip also includes a storage module (eg, memory), the storage module is used for storing instructions, the processing module is used for executing the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to execute any of the foregoing.
  • a storage module eg, memory
  • the storage module is used for storing instructions
  • the processing module is used for executing the instructions stored in the storage module
  • the execution of the instructions stored in the storage module causes the processing module to execute any of the foregoing.
  • At least two means two or more, and "a plurality” means two or more.
  • “And/or”, which describes the association relationship of the associated objects, indicates that there can be three kinds of relationships, for example, A and/or B, which can indicate: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the related objects before and after are an “or” relationship; in the formula, the character “/” indicates that the related objects are a “division” relationship.
  • “At least one item(s) below” or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s).
  • At least one item (a) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single or multiple indivual.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente demande concerne un procédé de détermination de programmation de ressources, un appareil et un support de stockage. Des conditions de charge d'un premier système de communication et d'un second système de communication sont acquises, et une stratégie de programmation de ressources est déterminée selon les conditions de charge du premier système de communication et du second système de communication. Si la charge du premier système de communication est faible et la charge du second système de communication est forte, il est déterminé qu'une première stratégie de programmation de ressources « domaine fréquentiel avant domaine temporel » sera utilisée, et si la charge du premier système de communication est forte et la charge du second système de communication est faible, il est déterminé qu'une seconde stratégie de programmation de ressources « domaine temporel avant domaine fréquentiel » sera utilisée. Selon la solution, l'influence du premier système de communication sur le second système de communication est réduite autant que possible tandis que des ressources de canal sont intégralement utilisées.
PCT/CN2021/070891 2021-01-08 2021-01-08 Procédé de détermination de programmation de ressources, appareil et support de stockage WO2022147771A1 (fr)

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PCT/CN2021/070891 WO2022147771A1 (fr) 2021-01-08 2021-01-08 Procédé de détermination de programmation de ressources, appareil et support de stockage
CN202180069297.5A CN116326094A (zh) 2021-01-08 2021-01-08 资源调度的确定方法、装置及存储介质

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CN109195194A (zh) * 2018-08-09 2019-01-11 北京邮电大学 一种接入信道的方法、装置及设备
CN111417194A (zh) * 2019-01-07 2020-07-14 中国移动通信有限公司研究院 资源映射配置方法、网络侧设备、用户设备及通信设备

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