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WO2020199084A1 - 非授权频段上的随机接入方法、装置及存储介质 - Google Patents

非授权频段上的随机接入方法、装置及存储介质 Download PDF

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Publication number
WO2020199084A1
WO2020199084A1 PCT/CN2019/080838 CN2019080838W WO2020199084A1 WO 2020199084 A1 WO2020199084 A1 WO 2020199084A1 CN 2019080838 W CN2019080838 W CN 2019080838W WO 2020199084 A1 WO2020199084 A1 WO 2020199084A1
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WO
WIPO (PCT)
Prior art keywords
random access
frequency band
available
available frequency
terminal
Prior art date
Application number
PCT/CN2019/080838
Other languages
English (en)
French (fr)
Inventor
洪伟
Original Assignee
北京小米移动软件有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to PCT/CN2019/080838 priority Critical patent/WO2020199084A1/zh
Priority to EP19923634.0A priority patent/EP3952580A4/en
Priority to US17/593,849 priority patent/US11968726B2/en
Priority to CN201980000561.2A priority patent/CN110199565B/zh
Publication of WO2020199084A1 publication Critical patent/WO2020199084A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
    • H04W74/085—Random access procedures, e.g. with 4-step access with collision treatment collision avoidance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0289—Congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/08—Load balancing or load distribution
    • H04W28/082—Load balancing or load distribution among bearers or channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0866—Non-scheduled access, e.g. ALOHA using a dedicated channel for access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Definitions

  • the embodiments of the present disclosure relate to the field of communication technologies, and in particular, to a random access method, device, and storage medium on an unlicensed frequency band.
  • the 5G NR New Radio
  • the 5G NR New Radio
  • the 5G NR can also occupy the unlicensed frequency band for information transmission to improve the utilization of spectrum resources.
  • Unlicensed frequency bands are spectrum resources that can be used directly only as required by the regulatory agency.
  • Terminals that transmit on unlicensed frequency bands need to follow the LBT (Listen Before Talk) mechanism. That is, a terminal that uses an unlicensed frequency band for transmission needs to perform the LBT process before transmitting information to detect whether the unlicensed frequency band is occupied. If the unlicensed frequency band is not occupied, that is, it is in an idle state, the terminal can occupy the unlicensed frequency band. Frequency band transmission information.
  • the LBT mechanism determines that the terminal must pass competition and the competition is successful before information transmission can be carried out.
  • a terminal When a terminal initiates random access on an unlicensed frequency band, it also needs to perform the LBT process first. If the terminal keeps failing in competition due to fierce competition on the unlicensed frequency band, the terminal cannot successfully initiate random access.
  • the embodiments of the present disclosure provide a random access method, device and storage medium on an unlicensed frequency band.
  • the technical solution is as follows:
  • a random access method on an unlicensed frequency band including:
  • the terminal obtains a beacon frame sent by a WLAN AP (Wireless Local Area Networks Access Point) working on n available frequency bands for random access, where the available frequency band for random access refers to the unlicensed frequency band, A frequency band used when the terminal initiates random access, where n is a positive integer;
  • WLAN AP Wireless Local Area Networks Access Point
  • the terminal selects the first random access available frequency band from the n available random access frequency bands according to the channel indication information contained in the beacon frame, where the one working on the i-th random access available frequency band
  • the channel indication information included in the beacon frame sent by the WLAN AP is used to indicate the channel congestion degree of the i-th random access available frequency band, and the i is a positive integer less than or equal to the n;
  • the terminal initiates random access on the first frequency band available for random access.
  • the terminal selecting the first random access available frequency band from the n random access available frequency bands according to the channel indication information contained in the beacon frame includes:
  • the terminal determines the channel congestion degree of each of the frequency bands available for random access according to the channel indication information contained in the beacon frame;
  • the terminal selects, from the n available frequency bands for random access, the available frequency band for random access with the lowest channel congestion as the first available frequency band for random access.
  • the method further includes:
  • the channel indication information includes: BSS Load Element (Basic Service Set Load Element, basic service set load element), and/or BSS Average Access Delay Element (Basic Service Set Average Access Delay Element, basic service set average Access delay element).
  • BSS Load Element Basic Service Set Load Element, basic service set load element
  • BSS Average Access Delay Element Base Service Set Average Access Delay Element, basic service set average Access delay element
  • a random access device on an unlicensed frequency band which is applied to a terminal, and the device includes:
  • a WiFi (Wireless Fidelity, wireless fidelity) component is configured to obtain beacon frames sent by a WLAN AP working on n frequency bands available for random access, where the frequency band available for random access refers to the unlicensed frequency band, A frequency band used when the terminal initiates random access, where n is a positive integer;
  • the cellular component is configured to select a first random access available frequency band from the n random access available frequency bands according to the channel indication information contained in the beacon frame, where the i-th random access available frequency band
  • the channel indication information contained in the beacon frame sent by the working WLAN AP is used to indicate the channel congestion degree of the i-th random access available frequency band, and the i is a positive integer less than or equal to the n;
  • the cellular component is configured to:
  • the cellular component is further configured to: when the terminal fails to initiate random access on the first available frequency band for random access, according to the channel indication information contained in the beacon frame, from the Selecting a second available frequency band for random access from the n available frequency bands for random access, where the second available frequency band for random access is different from the first available frequency band for random access;
  • the cellular component is also configured to initiate random access on the second frequency band available for random access.
  • a random access device on an unlicensed frequency band which is applied to a terminal, and the device includes:
  • the WiFi component is configured to obtain beacon frames sent by the wireless access point WLAN AP working on n available frequency bands for random access, where the available frequency band for random access refers to the unlicensed frequency band for the terminal Frequency band used when initiating random access, where n is a positive integer;
  • the processing component is configured to select a first random access available frequency band from the n random access available frequency bands according to the channel indication information contained in the beacon frame, wherein, in the i-th random access available frequency band
  • the channel indication information contained in the beacon frame sent by the working WLAN AP is used to indicate the channel congestion degree of the i-th random access available frequency band, and the i is a positive integer less than or equal to the n;
  • the cellular component is configured to initiate random access on the first available frequency band for random access.
  • the cellular component is also configured to initiate random access on the second frequency band available for random access.
  • a random access device on an unlicensed frequency band which is applied to a terminal, and the device includes:
  • a memory for storing executable instructions of the processor
  • the processor is configured to:
  • n is a positive integer
  • the first random access available frequency band is selected from the n available random access frequency bands, where the WLAN AP working on the i-th random access available frequency band transmits
  • the channel indication information contained in the beacon frame is used to indicate the channel congestion degree of the i-th random access available frequency band, and the i is a positive integer less than or equal to the n;
  • a non-transitory computer-readable storage medium having a computer program stored thereon, and the computer program, when executed by a processor, implements the steps of the method described in the first aspect.
  • the terminal obtains the beacon frame sent by the WLAN AP working on the frequency band available for random access, and according to the channel indication information contained in the beacon frame, from multiple random access available Select one of the frequency bands available for random access to initiate random access. Make full use of the feature that WLAN AP also works on unlicensed frequency bands. With the help of WLAN AP, the channel congestion degree of each frequency band available for random access is obtained, and according to the above-mentioned channel congestion degree, a suitable random access available frequency band is selected to initiate random access. This improves the success rate of random access initiated by the terminal.
  • Fig. 1 is a schematic diagram showing a network architecture according to an exemplary embodiment
  • Fig. 2 is a flowchart showing a random access method on an unlicensed frequency band according to an exemplary embodiment
  • Fig. 3 is a block diagram showing a random access device on an unlicensed frequency band according to an exemplary embodiment
  • Fig. 4 is a block diagram showing a random access device on an unlicensed frequency band according to another exemplary embodiment
  • Fig. 5 is a schematic structural diagram of a terminal according to an exemplary embodiment.
  • Fig. 1 is a schematic diagram showing a network architecture according to an exemplary embodiment.
  • the network architecture may include: a base station 110 and a terminal 120.
  • the base station 110 is deployed in the access network.
  • the access network in the 5G NR system can be called NG-RAN (New Generation-Radio Access Network).
  • the base station 110 and the terminal 120 communicate with each other through a certain air interface technology, for example, may communicate with each other through cellular technology.
  • the base station 110 is a device deployed in an access network to provide the terminal 120 with a wireless communication function.
  • the base station 110 may include various forms of macro base stations, micro base stations, relay stations, access points, and so on.
  • the names of devices with base station functions may be different. For example, in a 5G NR system, they are called gNodeB or gNB. As communication technology evolves, the name "base station" may change.
  • base stations the above-mentioned devices that provide wireless communication functions for the terminal 120 are collectively referred to as base stations.
  • the number of terminals 120 is usually multiple, and one or more terminals 120 may be distributed in a cell managed by each base station 110.
  • the terminal 120 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, as well as various forms of User Equipment (UE), mobile stations ( Mobile Station, MS), terminal device (terminal device), etc.
  • UE User Equipment
  • MS Mobile Station
  • terminal device terminal device
  • the "5G NR system" in the embodiments of the present disclosure may also be referred to as a 5G system or an NR system, but those skilled in the art can understand its meaning.
  • the technical solutions described in the embodiments of the present disclosure may be applicable to the 5G NR system, and may also be applicable to the subsequent evolution system of the 5G NR system.
  • Fig. 2 is a flowchart showing a random access method on an unlicensed frequency band according to an exemplary embodiment. This method can be applied to the terminal 120 shown in FIG. 1. The method can include the following steps (201-203).
  • step 201 the terminal obtains a beacon frame sent by a WLAN AP working on n available frequency bands for random access, where n is a positive integer.
  • the frequency band available for random access refers to the frequency band in the unlicensed frequency band for the terminal to use when initiating random access.
  • the number of frequency bands available for random access of the terminal is not limited, and the terminal may have one frequency band available for random access, or there may be multiple frequency bands available for random access.
  • the frequency band available for random access may be configured by the base station to the terminal, for example, the base station may be configured to the terminal through system information.
  • a WLAN AP is an access point of a wireless network, and can also be called a "hot spot", which is used for terminals to access a WLAN (Wireless Local Area Networks, wireless local area network) network.
  • the WLAN AP will broadcast beacon frames for the terminal to scan and access.
  • the terminal receives a beacon frame on a certain random access frequency band, it means that there is a WLAN AP working on the random access available frequency band near the terminal.
  • the terminal has 3 available frequency bands for random access, namely frequency band 1, frequency band 2, and frequency band 3. If the terminal receives beacon frame 1 on frequency band 1, it means that there is a WLAN AP working on frequency band 1 near the terminal. If the terminal receives two different beacon frames on frequency band 2, such as beacon frame 2 and beacon frame 3, it means that there may be multiple WLAN APs working on frequency band 2 near the terminal. If the terminal does not receive a beacon frame on frequency band 3, it means that there is no WLAN AP working on this frequency band 3 near the terminal.
  • the terminal when the terminal needs to initiate random access to the base station and needs to perform LBT before initiating random access, the terminal will search for a WLAN AP working on the frequency band available for random access, and obtain the beacon sent by the WLAN AP frame.
  • step 202 the terminal selects the first random access available frequency band from n available random access frequency bands according to the channel indication information contained in the beacon frame.
  • the channel indication information contained in the beacon frame sent by the WLAN AP working on the i-th random access available frequency band is used to indicate the channel congestion degree of the i-th random access available frequency band, i is a positive integer less than or equal to n.
  • the terminal scans beacon frame 1 sent by WLAN AP#1 on frequency band 1, and the channel indication information contained in the beacon frame 1 is used to indicate the channel congestion degree of frequency band 1.
  • the channel indication information contained in the beacon frame 2 is used to indicate the channel congestion degree of frequency band 2.
  • the channel indication information contained in the beacon frame 3 is also used to indicate the degree of channel congestion in frequency band 2.
  • the channel indicator information contained in beacon frame 2 is the channel congestion measured by WLAN AP#2
  • the channel indicator information contained in beacon frame 3 is the channel congestion measured by WLAN AP#3.
  • the channel congestion measured by multiple WLAN APs working on the same frequency band may be the same or different.
  • the indicated channel congestion degree may be the same or different, because the channel congestion degree in a frequency band It may change at different times.
  • the channel indication information includes but is not limited to at least one of the following: BSS Load Element, BSS Average Access Delay Element.
  • BSS Load Element BSS Average Access Delay Element.
  • the embodiment of the present disclosure does not limit the type of channel indication information.
  • BSS Load Element is used to indicate the load size corresponding to the channel. If the value corresponding to the BSS Load Element is larger, the channel congestion is higher; if the value corresponding to the BSS Load Element is smaller, the channel congestion is lower.
  • BSS Average Access Delay Element is used to indicate the average access delay time corresponding to the channel. If the value corresponding to BSS Average Access Delay Element is larger, the channel congestion degree is higher; if the value corresponding to BSS Average Access Delay Element is smaller, the channel congestion degree is lower.
  • the probability of the terminal getting a transmission opportunity on the frequency band available for random access is lower; if the channel congestion degree of a frequency band available for random access is lower, then The terminal has a higher probability of obtaining a transmission opportunity on the frequency band available for random access.
  • the terminal can determine the degree of channel congestion in each available frequency band for random access, and then select the appropriate frequency band (such as channel The less crowded random access available frequency band) initiates random access.
  • the first frequency band available for random access refers to a frequency band available for random access selected by the terminal from the above n available frequency bands for random access.
  • step 202 includes the following sub-steps:
  • the terminal selects the available frequency band for random access with the lowest channel congestion as the first available frequency band for random access.
  • the terminal has 3 available frequency bands for random access, including frequency band 1, frequency band 2, and frequency band 3.
  • the channel indication information contained in the beacon frame is BSS Load Element.
  • the value corresponding to the BSS Load Element in the beacon frame received by the terminal on band 1 is 100, and the BSS Load Element corresponds to the beacon frame received on band 2
  • the value of is 150, and the corresponding value of BSS Load Element in the beacon frame received on band 3 is 200.
  • the channel congestion degree of the three random access available frequency bands from low to high is: frequency band 1, frequency band 2 , Band 3. Because frequency band 1 has the lowest channel congestion, the terminal selects frequency band 1 as the first available frequency band for random access.
  • the terminal can choose the first random access available frequency band according to BSS Load Element or BSS Average Access Delay Element by default; the terminal can also consider BSS Load Element and BSS Average Access Delay Element, select the first available frequency band for random access, for example, take a weighted average of the two corresponding values, and select the first available frequency band for random access based on the weighted average.
  • the terminal only finds WLAN AP#3 on frequency band 2.
  • the channel indication information contained in the beacon frame sent by this WLAN AP#3 is BSS Average Access Delay Element, and the WLAN AP#3 received by the terminal
  • the value corresponding to BSS Average Access Delay Element#3 in the transmitted beacon frame is 100, and the channel congestion degree of band 2 can be recorded as 100.
  • the terminal since the channel congestion of frequency band 1 is lower than that of frequency band 2, the terminal selects frequency band 1 from frequency band 1 and frequency band 2 as the first available frequency band for random access.
  • step 203 the terminal initiates random access on the first available frequency band for random access.
  • the above method further includes the following steps:
  • the terminal initiates random access on the second frequency band available for random access.
  • the terminal if the terminal fails to initiate random access on the first available frequency band for random access, the terminal still initiates random access on the first available frequency band for random access until the random access is successful.
  • the terminal obtains the beacon frame sent by the WLAN AP working on the frequency band available for random access, and according to the beacon frame
  • the channel indication information contained in the frame selects a random access available frequency band from multiple random access available frequency bands to initiate random access.
  • the channel congestion degree of each frequency band available for random access is obtained, and according to the above-mentioned channel congestion degree, a suitable random access available frequency band is selected to initiate random access. This improves the success rate of random access initiated by the terminal.
  • Fig. 3 is a block diagram showing a random access device on an unlicensed frequency band according to an exemplary embodiment.
  • the device has the function of realizing the above method example, and the function can be realized by hardware, or by hardware executing corresponding software.
  • the device can be the terminal described above, or it can be set in the terminal.
  • the device 300 may include: a WiFi component 310 and a cellular component 320.
  • the WiFi component 310 is a communication component used to access a WLAN network, which may also be referred to as a WiFi network.
  • a WLAN network can include several WLAN APs.
  • the terminal will use the WiFi component 310 to search for a WLAN AP working in the frequency band available for random access, and obtain the beacon frame sent by the aforementioned WLAN AP through the WiFi component 310.
  • the cellular component 320 is a communication component used to access a cellular network provided by an operator.
  • a cellular network is also called a mobile network, which can include a core network and an access network.
  • a number of core network devices are deployed in the core network. The functions of the core network devices are mainly to provide user connections, manage users, and carry out services, as the bearer network provides an interface to the external network.
  • the core network can include AMF (Access and Mobility Management Function, access and mobility management function) entities, UPF (User Plane Function, user plane function) entities, and SMF (Session Management Function, session management functions). ) Physical and other equipment.
  • Several access network equipment, such as base stations, are deployed in the access network. The access network equipment is used to provide wireless communication functions for the terminal.
  • the cellular network may be a 2G network, a 3G network, a 4G network, a 5G network, or a subsequently evolved cellular network, or a combination thereof.
  • the WiFi component 310 is configured to obtain a beacon frame sent by a WLAN AP working on n frequency bands available for random access, and the frequency band available for random access refers to the unlicensed frequency band , The frequency band used when the terminal initiates random access, and the n is a positive integer.
  • the cellular component 320 is configured to select a first random access available frequency band from the n random access available frequency bands according to the channel indication information contained in the beacon frame, wherein, in the i-th random access available frequency band, The channel indication information contained in the beacon frame sent by the WLAN AP working in the available frequency band is used to indicate the channel congestion degree of the i-th random access available frequency band, where i is a positive integer less than or equal to the n .
  • the terminal obtains the beacon frame sent by the WLAN AP working on the frequency band available for random access, according to the beacon frame
  • the channel indication information contained in the frame selects a random access available frequency band from multiple random access available frequency bands to initiate random access.
  • the channel congestion degree of each frequency band available for random access is obtained, and according to the above-mentioned channel congestion degree, a suitable random access available frequency band is selected to initiate random access. This improves the success rate of random access initiated by the terminal.
  • the WiFi component 310 can directly send a beacon frame to the cellular component 320 through the communication link, and the cellular component 320 directly responds to the beacon
  • the channel indication information contained in the frame determines the first available frequency band for random access, and the cellular component 320 initiates random access on the first available frequency band for random access.
  • the cellular component 320 is configured to:
  • the cellular component 320 is also configured to initiate random access on the second frequency band available for random access.
  • the channel indication information includes: BSS Load Element, and/or BSS Average Access Delay Element.
  • Fig. 4 is a block diagram showing a random access device on an unlicensed frequency band according to another exemplary embodiment.
  • the device has the function of realizing the above method example, and the function can be realized by hardware, or by hardware executing corresponding software.
  • the device can be the terminal described above, or it can be set in the terminal.
  • the device 300 may include a WiFi component 310, a cellular component 320, and a processing component 330.
  • the processing component 330 is a component used to control various operations (such as detection, sending, and receiving operations) of the terminal.
  • the processing component 330 may be a processor or a controller of the terminal.
  • the WiFi component 310 is configured to obtain a beacon frame sent by a wireless access point WLAN AP operating on n frequency bands available for random access, and the frequency band available for random access refers to the In the unlicensed frequency band, the frequency band used when the terminal initiates random access, and the n is a positive integer.
  • the processing component 330 is configured to select a first random access available frequency band from the n random access available frequency bands according to the channel indication information contained in the beacon frame, wherein, in the i-th random access available frequency band, The channel indication information contained in the beacon frame sent by the WLAN AP working in the available frequency band is used to indicate the channel congestion degree of the i-th random access available frequency band, where i is a positive integer less than or equal to the n .
  • the cellular component 320 is configured to initiate random access on the first available frequency band for random access.
  • the terminal obtains the beacon frame sent by the WLAN AP working on the frequency band available for random access, and according to the beacon frame
  • the channel indication information contained in the frame selects a random access available frequency band from multiple random access available frequency bands to initiate random access.
  • the channel congestion degree of each frequency band available for random access is obtained, and according to the above-mentioned channel congestion degree, a suitable random access available frequency band is selected to initiate random access. This improves the success rate of random access initiated by the terminal.
  • the WiFi component 310 can send a beacon frame to the processing component 330, and the processing component 330 can determine the first random access available frequency band, and The cellular component 320 is notified of the first available frequency band for random access, so that the cellular component 320 initiates random access on the first available frequency band for random access.
  • the processing component 330 is further configured to: when the terminal fails to initiate random access on the first random access available frequency band, according to the channel indication information contained in the beacon frame, from Selecting a second available frequency band for random access from the n available frequency bands for random access, where the second available frequency band for random access is different from the first available frequency band for random access;
  • the cellular component 320 is also configured to initiate random access on the second frequency band available for random access.
  • the channel indication information includes: BSS Load Element, and/or BSS Average Access Delay Element.
  • components can also be referred to as functional modules, and the functions of "components” can be implemented by hardware or by hardware executing corresponding software.
  • the above-mentioned components or functional modules
  • the above-mentioned functions can be allocated to different components (or functional modules) according to actual needs. ) Complete, that is, divide the internal structure of the device into different components (or functional modules) to complete all or part of the functions described above.
  • An exemplary embodiment of the present disclosure also provides a random access device on an unlicensed frequency band, which can implement the random access method on the unlicensed frequency band on the terminal side provided by the present disclosure.
  • the device can be the terminal described above, or it can be set in the terminal.
  • the device includes a processor, and a memory for storing executable instructions of the processor. Among them, the processor is configured as:
  • n is a positive integer
  • the first random access available frequency band is selected from the n available random access frequency bands, where the WLAN AP working on the i-th random access available frequency band transmits
  • the channel indication information contained in the beacon frame is used to indicate the channel congestion degree of the i-th random access available frequency band, and the i is a positive integer less than or equal to the n;
  • the processor is further configured to:
  • the terminal fails to initiate random access on the first available random access frequency band, according to the channel indication information contained in the beacon frame, select a second random access from the n available random access frequency bands Access available frequency band, wherein the second available frequency band for random access is different from the first available frequency band for random access;
  • the channel indication information includes: BSS Load Element, and/or BSS Average Access Delay Element.
  • Fig. 5 is a schematic structural diagram of a terminal according to an exemplary embodiment.
  • the terminal 500 includes a transmitter 501, a receiver 502, and a processor 503.
  • the processor 503 may also be a controller, which is represented as "controller/processor 503" in FIG. 5.
  • the terminal 500 may further include a modem processor 505, where the modem processor 505 may include an encoder 506, a modulator 507, a decoder 508, and a demodulator 509.
  • the transmitter 501 adjusts (for example, analog conversion, filtering, amplification, and up-conversion, etc.) the output samples and generates an uplink signal, which is transmitted via an antenna to the base station described in the above embodiment .
  • the antenna receives the downlink signal transmitted by the base station in the above embodiment.
  • the receiver 502 adjusts (eg, filters, amplifies, down-converts, and digitizes, etc.) the signal received from the antenna and provides input samples.
  • the encoder 506 receives service data and signaling messages to be transmitted on the uplink, and processes the service data and signaling messages (for example, formatting, encoding, and interleaving).
  • the modulator 507 further processes (eg, symbol mapping and modulation) the encoded service data and signaling messages and provides output samples.
  • the demodulator 509 processes (e.g., demodulates) the input samples and provides symbol estimates.
  • the decoder 508 processes (eg, deinterleaves and decodes) the symbol estimation and provides decoded data and signaling messages sent to the terminal 500.
  • the encoder 506, the modulator 507, the demodulator 509, and the decoder 508 can be implemented by a synthesized modem processor 505. These units are processed according to the wireless access technology adopted by the wireless access network (for example, the access technology of LTE and other evolved systems). It should be noted that when the terminal 500 does not include the modem processor 505, the aforementioned functions of the modem processor 505 may also be performed by the processor 503.
  • the processor 503 controls and manages the actions of the terminal 500, and is used to execute the processing procedure performed by the terminal 500 in the foregoing embodiment of the present disclosure.
  • the processor 503 is further configured to execute each step on the terminal side in the foregoing method embodiment, and/or other steps of the technical solution described in the embodiment of the present disclosure.
  • the terminal 500 may further include a memory 504, and the memory 504 is configured to store program codes and data for the terminal 500.
  • FIG. 5 only shows a simplified design of the terminal 500.
  • the terminal 500 may include any number of transmitters, receivers, processors, modem processors, memories, etc., and all terminals that can implement the embodiments of the present disclosure are within the protection scope of the embodiments of the present disclosure. Inside.
  • the embodiments of the present disclosure also provide a non-transitory computer-readable storage medium on which a computer program is stored.
  • the computer program is executed by the processor of the terminal, the random operation on the unlicensed frequency band on the terminal side as described above is implemented. Access method.

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Abstract

本公开是关于一种非授权频段上的随机接入方法、装置及存储介质，属于通信技术领域。所述方法包括：终端获取在n个随机接入可用频段上工作的WLAN AP发送的信标帧，n为正整数；终端根据信标帧中包含的信道指示信息，从n个随机接入可用频段中选择第一随机接入可用频段；终端在第一随机接入可用频段上发起随机接入。对于非授权频段上的随机接入场景，充分利用了WLAN AP也在非授权频段上工作的特点，借助于WLAN AP获知各个随机接入可用频段的信道拥挤程度，并根据上述信道拥挤程度，选择一个合适的随机接入可用频段发起随机接入，提高了终端发起随机接入的成功率。

Description

非授权频段上的随机接入方法、装置及存储介质 技术领域
本公开实施例涉及通信技术领域，特别涉及一种非授权频段上的随机接入方法、装置及存储介质。
背景技术
5G NR(New Radio，新空口)系统除了占用授权频段进行信息传输之外，还可以占用非授权频段进行信息传输，以提高频谱资源的利用率。
非授权频段是只需要管理机构要求就可以直接使用的频谱资源。在非授权频段上进行传输的终端，需要遵循LBT(Listen Before Talk，监听避让)机制。即使用非授权频段传输的终端，在传输信息之前需要先执行LBT流程，检测该非授权频段是否被占用，如果该非授权频段未被占用，也即处于空闲状态，终端才可以占用该非授权频段传输信息。LBT机制决定了终端需要通过竞争且竞争成功后才能进行信息传输。
当终端在非授权频段上发起随机接入时，同样需要先执行LBT流程，如果非授权频段上因竞争激烈而导致终端一直竞争失败，则会导致终端一直无法成功发起随机接入。
发明内容
本公开实施例提供了一种非授权频段上的随机接入方法、装置及存储介质。所述技术方案如下：
根据本公开实施例的第一方面，提供了一种非授权频段上的随机接入方法，所述方法包括：
终端获取在n个随机接入可用频段上工作的WLAN AP(Wireless Local Area Networks Access Point，无线接入点)发送的信标帧，所述随机接入可用频段是指所述非授权频段中，供所述终端发起随机接入时使用的频段，所述n为正整数；
所述终端根据所述信标帧中包含的信道指示信息，从所述n个随机接入可 用频段中选择第一随机接入可用频段，其中，在第i个随机接入可用频段上工作的WLAN AP发送的信标帧中包含的信道指示信息，用于指示所述第i个随机接入可用频段的信道拥挤程度，所述i为小于等于所述n的正整数；
所述终端在所述第一随机接入可用频段上发起随机接入。
可选地，所述终端根据所述信标帧中包含的信道指示信息，从所述n个随机接入可用频段中选择第一随机接入可用频段，包括：
所述终端根据所述信标帧中包含的信道指示信息，确定各个所述随机接入可用频段的信道拥挤程度；
所述终端从所述n个随机接入可用频段中，选择信道拥挤程度最低的随机接入可用频段作为所述第一随机接入可用频段。
可选地，所述方法还包括：
若所述终端在所述第一随机接入可用频段上发起随机接入失败，则所述终端根据所述信标帧中包含的信道指示信息，从所述n个随机接入可用频段中选择第二随机接入可用频段，其中，所述第二随机接入可用频段和所述第一随机接入可用频段不同；
所述终端在所述第二随机接入可用频段上发起随机接入。
可选地，所述信道指示信息包括：BSS Load Element(Basic Service Set Load Element，基本服务集负载元素)，和/或，BSS Average Access Delay Element(Basic Service Set Average Access Delay Element，基本服务集平均访问延迟元素)。
根据本公开实施例的第二方面，提供了一种非授权频段上的随机接入装置，应用于终端中，所述装置包括：
WiFi(Wireless Fidelity，无线保真)组件，被配置为获取在n个随机接入可用频段上工作的WLAN AP发送的信标帧，所述随机接入可用频段是指所述非授权频段中，供所述终端发起随机接入时使用的频段，所述n为正整数；
蜂窝组件，被配置为根据所述信标帧中包含的信道指示信息，从所述n个随机接入可用频段中选择第一随机接入可用频段，其中，在第i个随机接入可用频段上工作的WLAN AP发送的信标帧中包含的信道指示信息，用于指示所述第i个随机接入可用频段的信道拥挤程度，所述i为小于等于所述n的正整数；
所述蜂窝组件，还被配置为在所述第一随机接入可用频段上发起随机接入。
可选地，所述蜂窝组件，被配置为：
根据所述信标帧中包含的信道指示信息，确定各个所述随机接入可用频段 的信道拥挤程度；
从所述n个随机接入可用频段中，选择信道拥挤程度最低的随机接入可用频段作为所述第一随机接入可用频段。
可选地，所述蜂窝组件，还被配置为当所述终端在所述第一随机接入可用频段上发起随机接入失败时，根据所述信标帧中包含的信道指示信息，从所述n个随机接入可用频段中选择第二随机接入可用频段，其中，所述第二随机接入可用频段和所述第一随机接入可用频段不同；
所述蜂窝组件，还被配置为在所述第二随机接入可用频段上发起随机接入。
根据本公开实施例的第三方面，提供了一种非授权频段上的随机接入装置，应用于终端中，所述装置包括：
WiFi组件，被配置为获取在n个随机接入可用频段上工作的无线接入点WLAN AP发送的信标帧，所述随机接入可用频段是指所述非授权频段中，供所述终端发起随机接入时使用的频段，所述n为正整数；
处理组件，被配置为根据所述信标帧中包含的信道指示信息，从所述n个随机接入可用频段中选择第一随机接入可用频段，其中，在第i个随机接入可用频段上工作的WLAN AP发送的信标帧中包含的信道指示信息，用于指示所述第i个随机接入可用频段的信道拥挤程度，所述i为小于等于所述n的正整数；
蜂窝组件，被配置为在所述第一随机接入可用频段上发起随机接入。
可选地，所述处理组件，被配置为：
根据所述信标帧中包含的信道指示信息，确定各个所述随机接入可用频段的信道拥挤程度；
从所述n个随机接入可用频段中，选择信道拥挤程度最低的随机接入可用频段作为所述第一随机接入可用频段。
可选地，所述处理组件，还被配置为当所述终端在所述第一随机接入可用频段上发起随机接入失败时，根据所述信标帧中包含的信道指示信息，从所述n个随机接入可用频段中选择第二随机接入可用频段，其中，所述第二随机接入可用频段和所述第一随机接入可用频段不同；
所述蜂窝组件，还被配置为在所述第二随机接入可用频段上发起随机接入。
根据本公开实施例的第四方面，提供了一种非授权频段上的随机接入装置，应用于终端中，所述装置包括：
处理器；
用于存储所述处理器的可执行指令的存储器；
其中，所述处理器被配置为：
获取在n个随机接入可用频段上工作的WLAN AP发送的信标帧，所述随机接入可用频段是指所述非授权频段中，供所述终端发起随机接入时使用的频段，所述n为正整数；
根据所述信标帧中包含的信道指示信息，从所述n个随机接入可用频段中选择第一随机接入可用频段，其中，在第i个随机接入可用频段上工作的WLAN AP发送的信标帧中包含的信道指示信息，用于指示所述第i个随机接入可用频段的信道拥挤程度，所述i为小于等于所述n的正整数；
在所述第一随机接入可用频段上发起随机接入。
根据本公开实施例的第五方面，提供了一种非临时性计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现如第一方面所述方法的步骤。
本公开实施例提供的技术方案可以包括以下有益效果：
对于非授权频段上的随机接入场景，终端通过获取在随机接入可用频段上工作的WLAN AP发送的信标帧，根据该信标帧中包含的信道指示信息，从多个随机接入可用频段中选择一个随机接入可用频段发起随机接入。充分利用了WLAN AP也在非授权频段上工作的特点，借助于WLAN AP获知各个随机接入可用频段的信道拥挤程度，并根据上述信道拥挤程度，选择一个合适的随机接入可用频段发起随机接入，提高了终端发起随机接入的成功率。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开的实施例，并与说明书一起用于解释本公开的原理。
图1是根据一示例性实施例示出的一种网络架构的示意图；
图2是根据一示例性实施例示出的一种非授权频段上的随机接入方法的流程图；
图3是根据一示例性实施例示出的一种非授权频段上的随机接入装置的框 图；
图4是根据另一示例性实施例示出的一种非授权频段上的随机接入装置的框图；
图5是根据一示例性实施例示出的一种终端的结构示意图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本公开的一些方面相一致的装置和方法的例子。
本公开实施例描述的网络架构以及业务场景是为了更加清楚地说明本公开实施例的技术方案，并不构成对本公开实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本公开实施例提供的技术方案对于类似的技术问题，同样适用。
图1是根据一示例性实施例示出的一种网络架构的示意图。该网络架构可以包括：基站110和终端120。
基站110部署在接入网中。5G NR系统中的接入网可以称为NG-RAN(New Generation-Radio Access Network，新一代无线接入网)。基站110与终端120之间通过某种空口技术互相通信，例如可以通过蜂窝技术相互通信。
基站110是一种部署在接入网中用以为终端120提供无线通信功能的装置。基站110可以包括各种形式的宏基站，微基站，中继站，接入点等等。在采用不同的无线接入技术的系统中，具备基站功能的设备的名称可能会有所不同，例如在5G NR系统中，称为gNodeB或者gNB。随着通信技术的演进，“基站”这一名称可能会变化。为方便描述，本公开实施例中，上述为终端120提供无线通信功能的装置统称为基站。
终端120的数量通常为多个，每一个基站110所管理的小区内可以分布一个或多个终端120。终端120可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备，以及各种形式的用户设备(User Equipment，UE)，移动台(Mobile Station，MS)， 终端设备(terminal device)等等。为方便描述，本公开实施例中，上面提到的设备统称为终端。
本公开实施例中的“5G NR系统”也可以称为5G系统或者NR系统，但本领域技术人员可以理解其含义。本公开实施例描述的技术方案可以适用于5G NR系统，也可以适用于5G NR系统后续的演进系统。
图2是根据一示例性实施例示出的一种非授权频段上的随机接入方法的流程图。该方法可应用于图1所示的终端120中。该方法可以包括如下几个步骤(201～203)。
在步骤201中，终端获取在n个随机接入可用频段上工作的WLAN AP发送的信标帧，n为正整数。
在本公开实施例中，随机接入可用频段是指非授权频段中，供终端发起随机接入时使用的频段。在本公开实施例中，对终端的随机接入可用频段的数量不做限定，终端可以有一个随机接入可用频段，也可以有多个随机接入可用频段。另外，随机接入可用频段可以由基站配置给终端，例如基站通过系统信息配置给终端。
WLAN AP是无线网络的接入点，也可以称为“热点”，用于供终端接入WLAN(Wireless Local Area Networks，无线局域网)网络。WLAN AP会广播信标(beacon)帧，以便终端进行扫描接入。在本公开实施例中，如果终端在某一随机接入频段上接收到信标帧，则说明终端附近存在在该随机接入可用频段上工作的WLAN AP。
在一个示例中，假设终端具有3个随机接入可用频段，分别为频段1、频段2和频段3。如果终端在频段1上接收到信标帧1，则说明终端附近存在在该频段1上工作的WLAN AP。如果终端在频段2上接收到两个不同的信标帧，如信标帧2和信标帧3，则说明终端附近可能存在在该频段2上工作的多个WLAN AP。如果终端在频段3上未接收到信标帧，则说明终端附近不存在在该频段3上工作的WLAN AP。
可选地，当终端需要向基站发起随机接入并在发起随机接入之前需要进行LBT时，终端会去搜索在随机接入可用频段上工作的WLAN AP，并获取该WLAN AP发送的信标帧。
在步骤202中，终端根据信标帧中包含的信道指示信息，从n个随机接入 可用频段中选择第一随机接入可用频段。
在本公开实施例中，在第i个随机接入可用频段上工作的WLAN AP发送的信标帧中包含的信道指示信息，用于指示该第i个随机接入可用频段的信道拥挤程度，i为小于等于n的正整数。
仍然以上述示例为例，假设终端在频段1上扫描到WLAN AP#1发送的信标帧1，则该信标帧1中包含的信道指示信息用于指示频段1的信道拥挤程度；假设终端在频段2上扫描到WLAN AP#2发送的信标帧2以及WLAN AP#3发送的信标帧3，则该信标帧2中包含的信道指示信息用于指示频段2的信道拥挤程度，该信标帧3中包含的信道指示信息也用于指示频段2的信道拥挤程度。需要说明的一点是，信标帧2中包含的信道指示信息是WLAN AP#2测得的信道拥挤程度，信标帧3中包含的信道指示信息是WLAN AP#3测得的信道拥挤程度，虽然这两个WLAN AP都在频段2上工作，但他们两测得的信道拥挤程度可能相同，也可能不同。
也即，同一频段上工作的多个WLAN AP测得的信道拥挤程度可能相同，也可能不同。另外，即便是在某一频段上工作的一个WLAN AP先后发送的多个信标帧中携带的信道指示信息，其指示的信道拥挤程度可能相同，也可能不同，因为一个频段上的信道拥挤程度在不同时刻可能会发生变化。
可选地，信道指示信息包括但不限于以下至少一种：BSS Load Element，BSS Average Access Delay Element。本公开实施例对信道指示信息的类型不作限定。
BSS Load Element用于指示信道对应的负载大小。若BSS Load Element对应的值越大，则说明信道拥挤程度越高；若BSS Load Element对应的值越小，则说明信道拥挤程度越低。
BSS Average Access Delay Element用于指示信道对应的平均访问延迟时间长短。若BSS Average Access Delay Element对应的值越大，则说明信道拥挤程度越高；若BSS Average Access Delay Element对应的值越小，则说明信道拥挤程度越低。
若某一随机接入可用频段的信道拥挤程度越高，则终端在该随机接入可用频段上获得传输机会的概率就越低；若某一随机接入可用频段的信道拥挤程度越低，则终端在该随机接入可用频段上获得传输机会的概率就越高。
终端根据信标帧中包含的信道指示信息，可以确定出各个随机接入可用频 段的信道拥挤程度，然后根据各个随机接入可用频段的信道拥挤程度，选择合适的随机接入可用频段(如信道拥挤程度较低的随机接入可用频段)发起随机接入。上述第一随机接入可用频段是指终端从上述n个随机接入可用频段中选择的一个随机接入可用频段。
可选地，步骤202包括以下几个子步骤：
1、终端根据信标帧中包含的信道指示信息，确定各个随机接入可用频段的信道拥挤程度；
2、终端从n个随机接入可用频段中，选择信道拥挤程度最低的随机接入可用频段作为第一随机接入可用频段。
示例性地，假设终端具有3个随机接入可用频段，包括频段1、频段2和频段3。信标帧中包含的信道指示信息为BSS Load Element，终端在频段1上接收到的信标帧中BSS Load Element对应的值为100，在频段2上接收到的信标帧中BSS Load Element对应的值为150，在频段3上接收到的信标帧中BSS Load Element对应的值为200，则确定3个随机接入可用频段的信道拥挤程度由低到高依次为：频段1、频段2、频段3。因为频段1的信道拥挤程度最低，所以终端选择频段1作为第一随机接入可用频段。
当信道指示信息包括BSS Load Element和BSS Average Access Delay Element时，终端可以默认根据BSS Load Element或BSS Average Access Delay Element，选择第一随机接入可用频段；终端还可以综合考虑BSS Load Element和BSS Average Access Delay Element，选择第一随机接入可用频段，例如，对两者对应的值取加权平均，根据加权平均值选择第一随机接入可用频段。
当存在多个WLAN AP工作在一个随机接入可用频段上时，该随机接入可用频段的信道拥挤程度可以根据上述多个WLAN AP分别发送的信标帧中包含的信道指示信息的平均值确定；当只存在一个WLAN AP工作在一个随机接入可用频段上时，该随机接入可用频段的信道拥挤程度可以直接根据这一个WLAN AP发送的信标帧中包含的信道指示信息确定。
例如，在一个示例中，WLAN AP#1和WLAN AP#2都工作在频段1上，信标帧中包含的信道指示信息为BSS Average Access Delay Element，终端接收到的WLAN AP#1发送的信标帧中BSS Average Access Delay Element对应的值为100，终端接收到的WLAN AP#2发送的信标帧中BSS Average Access Delay Element对应的值为80，则频段1的信道拥挤程度可以记为(100+80)/2＝90。
在另一个示例中，终端在频段2上只搜索到WLAN AP#3，该WLAN AP#3发送的信标帧中包含的信道指示信息为BSS Average Access Delay Element，终端接收到的WLAN AP#3发送的信标帧中BSS Average Access Delay Element#3对应的值为100，则频段2的信道拥挤程度可以记为100。
根据上述两个示例，由于频段1的信道拥挤程度低于频段2，因此终端从频段1和频段2中，选择频段1作为第一随机接入可用频段。
在步骤203中，终端在第一随机接入可用频段上发起随机接入。
当随机接入成功后，终端可以建立RRC(Radio Resource Control，无线资源控制)连接，并通过上述RRC连接传输信息，例如，传输业务数据或控制信令。另外，在终端发起随机接入之前，需要先执行LBT流程。由于终端选择的是信道拥挤程度较低的频段，因此LBT流程的执行成功率较高，进而有助于后续成功发起随机接入。
可选地，上述方法还包括以下步骤：
1、若终端在第一随机接入可用频段上发起随机接入失败，则终端根据信标帧中包含的信道指示信息，从n个随机接入可用频段中选择第二随机接入可用频段，其中，第二随机接入可用频段和第一随机接入可用频段不同；
可选地，第二随机接入可用频段的信道拥挤程度仅次于第一随机接入可用频段的信道拥挤程度。
2、终端在第二随机接入可用频段上发起随机接入。
仍然以上述示例为例，若终端在频段1上发起随机接入失败，则终端在频段2上发起随机接入。
在一些其它实施例中，若终端在第一随机接入可用频段上发起随机接入失败，则终端仍然在第一随机接入可用频段上发起随机接入，直至随机接入成功。
综上所述，本公开实施例提供的技术方案中，对于非授权频段上的随机接入场景，终端通过获取在随机接入可用频段上工作的WLAN AP发送的信标帧，根据该信标帧中包含的信道指示信息，从多个随机接入可用频段中选择一个随机接入可用频段发起随机接入。充分利用了WLAN AP也在非授权频段上工作的特点，借助于WLAN AP获知各个随机接入可用频段的信道拥挤程度，并根据上述信道拥挤程度，选择一个合适的随机接入可用频段发起随机接入，提高了终端发起随机接入的成功率。
下述为本公开装置实施例，可以用于执行本公开方法实施例。对于本公开装置实施例中未披露的细节，请参照本公开方法实施例。
图3是根据一示例性实施例示出的一种非授权频段上的随机接入装置的框图。该装置具有实现上述方法示例的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该装置可以是上文介绍的终端，也可以设置在终端中。该装置300可以包括：WiFi组件310和蜂窝组件320。
WiFi组件310是用于接入WLAN网络的通信组件，该WLAN网络也可称为WiFi网络。WLAN网络中可以包括若干个WLAN AP。终端会通过WiFi组件310去搜索在随机接入可用频段上工作的WLAN AP，并通过该WiFi组件310获取上述WLAN AP发送的信标帧。
蜂窝组件320是用于接入运营商提供的蜂窝网络的通信组件。蜂窝网络也称为移动网络，其可以包括核心网和接入网。核心网中部署有若干核心网设备，核心网设备的功能主要是提供用户连接、对用户的管理以及对业务完成承载，作为承载网络提供到外部网络的接口。在5G NR系统中，核心网中可以包括AMF(Access and Mobility Management Function，接入和移动性管理功能)实体、UPF(User Plane Function，用户平面功能)实体和SMF(Session Management Function，会话管理功能)实体等设备。接入网中部署有若干接入网设备，如基站。接入网设备用于为终端提供无线通信功能。蜂窝网络可以是2G网络、3G网络、4G网络、5G网络，或者后续演进的蜂窝网络，或者它们的组合。
在本实施例中，所述WiFi组件310，被配置为获取在n个随机接入可用频段上工作的WLAN AP发送的信标帧，所述随机接入可用频段是指所述非授权频段中，供所述终端发起随机接入时使用的频段，所述n为正整数。
所述蜂窝组件320，被配置为根据所述信标帧中包含的信道指示信息，从所述n个随机接入可用频段中选择第一随机接入可用频段，其中，在第i个随机接入可用频段上工作的WLAN AP发送的信标帧中包含的信道指示信息，用于指示所述第i个随机接入可用频段的信道拥挤程度，所述i为小于等于所述n的正整数。
所述蜂窝组件320，还被配置为在所述第一随机接入可用频段上发起随机接入。
综上所述，本公开实施例提供的技术方案中，对于非授权频段上的随机接入场景，终端通过获取在随机接入可用频段上工作的WLAN AP发送的信标帧， 根据该信标帧中包含的信道指示信息，从多个随机接入可用频段中选择一个随机接入可用频段发起随机接入。充分利用了WLAN AP也在非授权频段上工作的特点，借助于WLAN AP获知各个随机接入可用频段的信道拥挤程度，并根据上述信道拥挤程度，选择一个合适的随机接入可用频段发起随机接入，提高了终端发起随机接入的成功率。
另外，如果WiFi组件310和蜂窝组件320之间建立有直连的通信链路，则WiFi组件310可以通过该通信链路直接向蜂窝组件320发送信标帧，由蜂窝组件320直接根据该信标帧中包含的信道指示信息确定出第一随机接入可用频段，并由蜂窝组件320在该第一随机接入可用频段上发起随机接入。
可选地，所述蜂窝组件320，被配置为：
根据所述信标帧中包含的信道指示信息，确定各个所述随机接入可用频段的信道拥挤程度；
从所述n个随机接入可用频段中，选择信道拥挤程度最低的随机接入可用频段作为所述第一随机接入可用频段。
可选地，所述蜂窝组件320，还被配置为当所述终端在所述第一随机接入可用频段上发起随机接入失败时，根据所述信标帧中包含的信道指示信息，从所述n个随机接入可用频段中选择第二随机接入可用频段，其中，所述第二随机接入可用频段和所述第一随机接入可用频段不同；
所述蜂窝组件320，还被配置为在所述第二随机接入可用频段上发起随机接入。
可选地，所述信道指示信息包括：BSS Load Element，和/或，BSS Average Access Delay Element。
图4是根据另一示例性实施例示出的一种非授权频段上的随机接入装置的框图。该装置具有实现上述方法示例的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该装置可以是上文介绍的终端，也可以设置在终端中。该装置300可以包括：WiFi组件310、蜂窝组件320和处理组件330。
有关WiFi组件310和蜂窝组件320的介绍说明，可参见上文图3实施例，本实施例对此不再赘述。
处理组件330是用于控制终端的各项操作(如检测、发送、接收等操作) 的组件。例如，该处理组件330可以是终端的处理器或控制器。
在本实施例中，所述WiFi组件310，被配置为获取在n个随机接入可用频段上工作的无线接入点WLAN AP发送的信标帧，所述随机接入可用频段是指所述非授权频段中，供所述终端发起随机接入时使用的频段，所述n为正整数。
所述处理组件330，被配置为根据所述信标帧中包含的信道指示信息，从所述n个随机接入可用频段中选择第一随机接入可用频段，其中，在第i个随机接入可用频段上工作的WLAN AP发送的信标帧中包含的信道指示信息，用于指示所述第i个随机接入可用频段的信道拥挤程度，所述i为小于等于所述n的正整数。
所述蜂窝组件320，被配置为在所述第一随机接入可用频段上发起随机接入。
综上所述，本公开实施例提供的技术方案中，对于非授权频段上的随机接入场景，终端通过获取在随机接入可用频段上工作的WLAN AP发送的信标帧，根据该信标帧中包含的信道指示信息，从多个随机接入可用频段中选择一个随机接入可用频段发起随机接入。充分利用了WLAN AP也在非授权频段上工作的特点，借助于WLAN AP获知各个随机接入可用频段的信道拥挤程度，并根据上述信道拥挤程度，选择一个合适的随机接入可用频段发起随机接入，提高了终端发起随机接入的成功率。
另外，如果WiFi组件310和蜂窝组件320之间没有建立有直接的通信链路，则WiFi组件310可以通过向处理组件330发送信标帧，由处理组件330确定第一随机接入可用频段，并将第一随机接入可用频段告知给蜂窝组件320，以使得蜂窝组件320在第一随机接入可用频段上发起随机接入。
可选地，所述处理组件330，被配置为：
根据所述信标帧中包含的信道指示信息，确定各个所述随机接入可用频段的信道拥挤程度；
从所述n个随机接入可用频段中，选择信道拥挤程度最低的随机接入可用频段作为所述第一随机接入可用频段。
可选地，所述处理组件330，还被配置为当所述终端在所述第一随机接入可用频段上发起随机接入失败时，根据所述信标帧中包含的信道指示信息，从所述n个随机接入可用频段中选择第二随机接入可用频段，其中，所述第二随机接入可用频段和所述第一随机接入可用频段不同；
所述蜂窝组件320，还被配置为在所述第二随机接入可用频段上发起随机接入。
可选地，所述信道指示信息包括：BSS Load Element，和/或，BSS Average Access Delay Element。
需要说明的一点是，上述图3和图4实施例提供的装置中，“组件”也可以称为功能模块，“组件”的功能可以由硬件实现，也可以由硬件执行相应的软件实现。另外，在实现本公开技术方案的完整功能时，仅以上述各个组件(或功能模块)的划分进行举例说明，实际应用中，可以根据实际需要而将上述功能分配由不同的组件(或功能模块)完成，即将设备的内部结构划分成不同的组件(或功能模块)，以完成以上描述的全部或者部分功能。
关于上述实施例中的装置，其中各个组件执行操作的具体方式已经在有关该方法的实施例中进行了详细描述，此处将不做详细阐述说明。
本公开一示例性实施例还提供了一种非授权频段上的随机接入装置，能够实现本公开提供的终端侧的非授权频段上的随机接入方法。该装置可以是上文介绍的终端，也可以设置在终端中。该装置包括：处理器，以及用于存储处理器的可执行指令的存储器。其中，处理器被配置为：
获取在n个随机接入可用频段上工作的WLAN AP发送的信标帧，所述随机接入可用频段是指所述非授权频段中，供所述终端发起随机接入时使用的频段，所述n为正整数；
根据所述信标帧中包含的信道指示信息，从所述n个随机接入可用频段中选择第一随机接入可用频段，其中，在第i个随机接入可用频段上工作的WLAN AP发送的信标帧中包含的信道指示信息，用于指示所述第i个随机接入可用频段的信道拥挤程度，所述i为小于等于所述n的正整数；
在所述第一随机接入可用频段上发起随机接入。
可选地，所述处理器被配置为：
根据所述信标帧中包含的信道指示信息，确定各个所述随机接入可用频段的信道拥挤程度；
从所述n个随机接入可用频段中，选择信道拥挤程度最低的随机接入可用频段作为所述第一随机接入可用频段。
可选地，所述处理器还被配置为：
当所述终端在所述第一随机接入可用频段上发起随机接入失败时，根据所述信标帧中包含的信道指示信息，从所述n个随机接入可用频段中选择第二随机接入可用频段，其中，所述第二随机接入可用频段和所述第一随机接入可用频段不同；
在所述第二随机接入可用频段上发起随机接入。
可选地，所述信道指示信息包括：BSS Load Element，和/或，BSS Average Access Delay Element。
图5是根据一示例性实施例示出的一种终端的结构示意图。
所述终端500包括发射器501，接收器502和处理器503。其中，处理器503也可以为控制器，图5中表示为“控制器/处理器503”。可选的，所述终端500还可以包括调制解调处理器505，其中，调制解调处理器505可以包括编码器506、调制器507、解码器508和解调器509。
在一个示例中，发射器501调节(例如，模拟转换、滤波、放大和上变频等)该输出采样并生成上行链路信号，该上行链路信号经由天线发射给上述实施例中所述的基站。在下行链路上，天线接收上述实施例中基站发射的下行链路信号。接收器502调节(例如，滤波、放大、下变频以及数字化等)从天线接收的信号并提供输入采样。在调制解调处理器505中，编码器506接收要在上行链路上发送的业务数据和信令消息，并对业务数据和信令消息进行处理(例如，格式化、编码和交织)。调制器507进一步处理(例如，符号映射和调制)编码后的业务数据和信令消息并提供输出采样。解调器509处理(例如，解调)该输入采样并提供符号估计。解码器508处理(例如，解交织和解码)该符号估计并提供发送给终端500的已解码的数据和信令消息。编码器506、调制器507、解调器509和解码器508可以由合成的调制解调处理器505来实现。这些单元根据无线接入网采用的无线接入技术(例如，LTE及其他演进系统的接入技术)来进行处理。需要说明的是，当终端500不包括调制解调处理器505时，调制解调处理器505的上述功能也可以由处理器503完成。
处理器503对终端500的动作进行控制管理，用于执行上述本公开实施例中由终端500进行的处理过程。例如，处理器503还用于执行上述方法实施例中的终端侧的各个步骤，和/或本公开实施例所描述的技术方案的其它步骤。
进一步的，终端500还可以包括存储器504，存储器504用于存储用于终端500的程序代码和数据。
可以理解的是，图5仅仅示出了终端500的简化设计。在实际应用中，终端500可以包含任意数量的发射器，接收器，处理器，调制解调处理器，存储器等，而所有可以实现本公开实施例的终端都在本公开实施例的保护范围之内。
本公开实施例还提供了一种非临时性计算机可读存储介质，其上存储有计算机程序，所述计算机程序被终端的处理器执行时实现如上文介绍的终端侧的非授权频段上的随机接入方法。
应当理解的是，在本文中提及的“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本公开的其它实施方案。本申请旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由下面的权利要求指出。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限制。

Claims (12)

  1. 一种非授权频段上的随机接入方法，其特征在于，所述方法包括：
    终端获取在n个随机接入可用频段上工作的无线接入点WLAN AP发送的信标帧，所述随机接入可用频段是指所述非授权频段中，供所述终端发起随机接入时使用的频段，所述n为正整数；
    所述终端根据所述信标帧中包含的信道指示信息，从所述n个随机接入可用频段中选择第一随机接入可用频段，其中，在第i个随机接入可用频段上工作的WLAN AP发送的信标帧中包含的信道指示信息，用于指示所述第i个随机接入可用频段的信道拥挤程度，所述i为小于等于所述n的正整数；
    所述终端在所述第一随机接入可用频段上发起随机接入。
  2. 根据权利要求1所述的方法，其特征在于，所述终端根据所述信标帧中包含的信道指示信息，从所述n个随机接入可用频段中选择第一随机接入可用频段，包括：
    所述终端根据所述信标帧中包含的信道指示信息，确定各个所述随机接入可用频段的信道拥挤程度；
    所述终端从所述n个随机接入可用频段中，选择信道拥挤程度最低的随机接入可用频段作为所述第一随机接入可用频段。
  3. 根据权利要求1或2所述的方法，其特征在于，所述方法还包括：
    若所述终端在所述第一随机接入可用频段上发起随机接入失败，则所述终端根据所述信标帧中包含的信道指示信息，从所述n个随机接入可用频段中选择第二随机接入可用频段，其中，所述第二随机接入可用频段和所述第一随机接入可用频段不同；
    所述终端在所述第二随机接入可用频段上发起随机接入。
  4. 根据权利要求1或2所述的方法，其特征在于，所述信道指示信息包括：基本服务集负载元素BSS Load Element，和/或，基本服务集平均访问延迟元素BSS Average Access Delay Element。
  5. 一种非授权频段上的随机接入装置，其特征在于，应用于终端中，所述装置包括：
    无线保真WiFi组件，被配置为获取在n个随机接入可用频段上工作的无线接入点WLAN AP发送的信标帧，所述随机接入可用频段是指所述非授权频段中，供所述终端发起随机接入时使用的频段，所述n为正整数；
    蜂窝组件，被配置为根据所述信标帧中包含的信道指示信息，从所述n个随机接入可用频段中选择第一随机接入可用频段，其中，在第i个随机接入可用频段上工作的WLAN AP发送的信标帧中包含的信道指示信息，用于指示所述第i个随机接入可用频段的信道拥挤程度，所述i为小于等于所述n的正整数；
    所述蜂窝组件，还被配置为在所述第一随机接入可用频段上发起随机接入。
  6. 根据权利要求5所述的装置，其特征在于，所述蜂窝组件，被配置为：
    根据所述信标帧中包含的信道指示信息，确定各个所述随机接入可用频段的信道拥挤程度；
    从所述n个随机接入可用频段中，选择信道拥挤程度最低的随机接入可用频段作为所述第一随机接入可用频段。
  7. 根据权利要求5或6所述的装置，其特征在于，
    所述蜂窝组件，还被配置为当所述终端在所述第一随机接入可用频段上发起随机接入失败时，根据所述信标帧中包含的信道指示信息，从所述n个随机接入可用频段中选择第二随机接入可用频段，其中，所述第二随机接入可用频段和所述第一随机接入可用频段不同；
    所述蜂窝组件，还被配置为在所述第二随机接入可用频段上发起随机接入。
  8. 一种非授权频段上的随机接入装置，其特征在于，应用于终端中，所述装置包括：
    无线保真WiFi组件，被配置为获取在n个随机接入可用频段上工作的无线接入点WLAN AP发送的信标帧，所述随机接入可用频段是指所述非授权频段中，供所述终端发起随机接入时使用的频段，所述n为正整数；
    处理组件，被配置为根据所述信标帧中包含的信道指示信息，从所述n个 随机接入可用频段中选择第一随机接入可用频段，其中，在第i个随机接入可用频段上工作的WLAN AP发送的信标帧中包含的信道指示信息，用于指示所述第i个随机接入可用频段的信道拥挤程度，所述i为小于等于所述n的正整数；
    蜂窝组件，被配置为在所述第一随机接入可用频段上发起随机接入。
  9. 根据权利要求8所述的装置，其特征在于，所述处理组件，被配置为：
    根据所述信标帧中包含的信道指示信息，确定各个所述随机接入可用频段的信道拥挤程度；
    从所述n个随机接入可用频段中，选择信道拥挤程度最低的随机接入可用频段作为所述第一随机接入可用频段。
  10. 根据权利要求8或9所述的装置，其特征在于，
    所述处理组件，还被配置为当所述终端在所述第一随机接入可用频段上发起随机接入失败时，根据所述信标帧中包含的信道指示信息，从所述n个随机接入可用频段中选择第二随机接入可用频段，其中，所述第二随机接入可用频段和所述第一随机接入可用频段不同；
    所述蜂窝组件，还被配置为在所述第二随机接入可用频段上发起随机接入。
  11. 一种非授权频段上的随机接入装置，其特征在于，应用于终端中，所述装置包括：
    处理器；
    用于存储所述处理器的可执行指令的存储器；
    其中，所述处理器被配置为：
    获取在n个随机接入可用频段上工作的无线接入点WLAN AP发送的信标帧，所述随机接入可用频段是指所述非授权频段中，供所述终端发起随机接入时使用的频段，所述n为正整数；
    根据所述信标帧中包含的信道指示信息，从所述n个随机接入可用频段中选择第一随机接入可用频段，其中，在第i个随机接入可用频段上工作的WLAN AP发送的信标帧中包含的信道指示信息，用于指示所述第i个随机接入可用频段的信道拥挤程度，所述i为小于等于所述n的正整数；
    在所述第一随机接入可用频段上发起随机接入。
  12. 一种非临时性计算机可读存储介质，其上存储有计算机程序，其特征在于，所述计算机程序被处理器执行时实现如权利要求1至4任一项所述方法的步骤。
PCT/CN2019/080838 2019-04-01 2019-04-01 非授权频段上的随机接入方法、装置及存储介质 WO2020199084A1 (zh)

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