WO2022148081A1 - 随机接入方法、接入控制方法、终端、接入点及存储介质 - Google Patents

随机接入方法、接入控制方法、终端、接入点及存储介质 Download PDF

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Publication number
WO2022148081A1
WO2022148081A1 PCT/CN2021/123418 CN2021123418W WO2022148081A1 WO 2022148081 A1 WO2022148081 A1 WO 2022148081A1 CN 2021123418 W CN2021123418 W CN 2021123418W WO 2022148081 A1 WO2022148081 A1 WO 2022148081A1
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WIPO (PCT)
Prior art keywords
pilot signal
timing
timing pilot
prach
pdcch
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PCT/CN2021/123418
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English (en)
French (fr)
Inventor
夏树强
郝鹏
陈艺戬
谢峰
戴博
郁光辉
胡留军
Original Assignee
中兴通讯股份有限公司
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Priority to EP21917123.8A priority Critical patent/EP4277418A1/en
Publication of WO2022148081A1 publication Critical patent/WO2022148081A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the field of wireless communication networks, for example, to a random access method, an access control method, a terminal, an access point, and a storage medium.
  • APs Access Points
  • some access points are in a closed state when services are sparse, and the terminal can select an access network service from the APs that provide coverage.
  • the AP that provides coverage is independent from the AP that provides capacity, and the AP that provides coverage may not necessarily provide the best service for the terminal.
  • the terminal only selects the AP to access from among the APs in the working state. In this case, the selected AP cannot be guaranteed to have the best service quality, which will not only affect the communication efficiency of the terminal, but also easily cause waste of power or spectrum resources. .
  • the present application provides a random access method, an access control method, a terminal, an access point and a storage medium, which expands the optional access point and enables the terminal to obtain higher service quality.
  • the embodiment of the present application provides a random access method, which is applied to a terminal, including:
  • a physical random access channel Physical Random Access Channel, PRACH
  • a timing pilot signal for responding to the PRACH
  • detecting a random access response (Random Access Response, RAR) message and indicating the RAR message
  • the physical downlink control channel Physical Downlink Control Channel, PDCCH
  • the timing of the RAR message and the PDCCH is determined based on the timing of the timing pilot signal; according to the timing pilot signal, the RAR message and the The PDCCH sends a third message for requesting access to the network.
  • the embodiment of the present application also provides an access control method, which is applied to an access point, including:
  • a timing pilot signal for responding to the PRACH, a RAR message, and a PDCCH for indicating the RAR message are sent, the timing of the RAR message and the PDCCH being based on the timing pilot
  • the timing of the signal is determined; when the third message is detected, a fourth message is sent, and the fourth message is used to notify that the terminal has accessed the network.
  • An embodiment of the present application further provides a terminal, including: a memory, a processor, and a computer program stored in the memory and running on the processor, where the processor implements the above random access method when executing the program.
  • An embodiment of the present application further provides an access point, including: a memory, a processor, and a computer program stored in the memory and running on the processor, where the processor implements the above-mentioned access control when executing the program method.
  • Embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the program is executed by a processor, the foregoing random access or access control method is implemented.
  • FIG. 1 is a flowchart of a random access method provided by an embodiment
  • FIG. 2 is a schematic diagram of a random access process provided by an embodiment
  • FIG. 3 is a schematic diagram of a corresponding relationship among a timing pilot signal, a PDCCH, and an RAR provided by an embodiment
  • FIG. 4 is a schematic diagram of a corresponding relationship among a timing pilot signal, a PDCCH, and an RAR provided by another embodiment
  • FIG. 5 is a schematic diagram of a corresponding relationship among a timing pilot signal, a PDCCH, and an RAR provided by yet another embodiment
  • FIG. 6 is a flowchart of an access control method provided by an embodiment
  • FIG. 7 is a schematic structural diagram of a random access apparatus according to an embodiment
  • FIG. 8 is a schematic structural diagram of an access control apparatus according to an embodiment
  • FIG. 9 is a schematic diagram of a hardware structure of a terminal according to an embodiment.
  • FIG. 10 is a schematic diagram of a hardware structure of an access point according to an embodiment.
  • a random access method in which a terminal receives a timing pilot signal, thereby selecting an AP to access among APs that can respond to PRACH, expanding the selectable access points, so that the terminal can obtain more High quality of service.
  • Fig. 1 is a flowchart of a random access method provided by an embodiment. As shown in Fig. 1 , the method provided by this embodiment includes steps 110-130.
  • step 110 the physical random access channel PRACH is transmitted.
  • step 120 a timing pilot signal for responding to the PRACH is received, and a random access response RAR message and a physical downlink control channel PDCCH for indicating the RAR message are detected, the RAR message and the PDCCH Timing is determined based on the timing of the timing pilot signal.
  • the timing of the RAR message is determined based on the timing of the timing pilot signal including the timing of the RAR message being the same as the timing of the timing pilot signal, or the timing of the RAR message is determined based on the timing of the timing pilot signal, For example, the timing of the RAR message is adjusted on the basis of the timing of the timing pilot signal according to the pilot frequency related to the RAR message.
  • the timing of the PDCCH is determined similarly based on the timing of the timing pilot signal.
  • step 130 a third message is sent according to the timing pilot signal, the RAR message and the PDCCH, where the third message is used to request access to the network.
  • the terminal is, for example, a user equipment (User Equipment, UE).
  • the UE sends PRACH, and one or more APs on the network side may receive the PRACH sent by the UE.
  • each AP can send a timing pilot signal to the UE in response to the PRACH.
  • the timing and the timing of the synchronization signal and the SIB-1 of the Synchronization Signal and PBCH Block (SSB) or the System Information Block (SIB) may be the same or different.
  • SSB Synchronization Signal and PBCH Block
  • SIB System Information Block
  • each AP also sends a RAR message and a PDCCH indicating the RAR message.
  • the timing of the RAR message and the PDCCH is related to the timing of the sent timing pilot signal.
  • each AP that sends the relevant timing pilot signal, RAR message and PDCCH can be used as a candidate AP for the UE to access the network.
  • the candidate AP is not limited to the AP in the working state, so that the UE can access the network. With more options, the UE can obtain the best quality of service.
  • FIG. 2 is a schematic diagram of a random access process provided by an embodiment.
  • the set of APs that send SSB or SIB-1 is denoted as AP1
  • the set of APs that receive PRACH signals is denoted as AP2
  • the set of APs that can provide services for the UE or allow the UE to access the network is denoted as AP2.
  • AP3 As shown in FIG. 2 , for the UE to access the wireless network, it sends a PRACH signal according to the instruction of SIB-1 of AP1, and the PRACH signal can be received by one or more APs.
  • the APs that receive the PRACH signal constitute AP2, and AP2 It includes not only APs that send SSB or SIB-1, but also APs that do not send SSB or SIB-1, and even APs that are dormant for energy saving and interference reduction purposes.
  • AP3 can be determined from AP2 according to the received PRACH signal strength, timing information, AP load and/or available resources, etc.
  • AP3 can be determined by mutual negotiation between APs in AP2, or determined by a central control node according to the information reported by AP2. After sending the timing pilot signal, AP3 also sends a RAR message and a PDCCH indicating the RAR message, and the RAR message and PDCCH follow the timing of the timing pilot signal.
  • the timing pilot signal corresponding to the PRACH sent by the AP3 can not only be used for the UE to determine the timing information in the transmission process, but also for the UE to perform channel state measurement and channel estimation. Since SSB or SIB-1 is usually used to serve UEs in a larger coverage area, the distance between the AP sending SSB or SIB-1 and the UE is relatively long, and the timing pilot signal is provided for UEs sending PRACH Service, the AP that sends the timing pilot signal is determined according to the received PRACH signal strength, timing information, AP load and/or available resources, etc. It is usually the AP that is closer to the UE that sends the PRACH. The timing pilot signal There may be a big difference between the timing of the UE and the timing of the UE, and there may also be a big difference with the timing of the SSB or SIB-1.
  • the UE receives the timing pilot signal, and when receiving the timing pilot signal is successful, it further detects the PDCCH and RAR messages, and sends Msg3 based on the successful detection of both the PDCCH and RAR messages.
  • the Msg3 includes the UE identifier, etc., thereby Request access to the network from AP3.
  • AP3 sends Msg4 on the basis of successfully detecting Msg3 to notify the UE that the access to the network is successful.
  • the timing pilot signal satisfies at least one of the following: the index of the PRACH and the timing pilot signal satisfy a one-to-one relationship; the random access-radio network temporary identity of the PRACH (Rand Access-Radio Network Temporary Identity, RA-RNTI) and the timing pilot signal satisfy a one-to-one relationship.
  • the index of the PRACH and the timing pilot signal satisfy a one-to-one relationship
  • the random access-radio network temporary identity of the PRACH Rand Access-Radio Network Temporary Identity, RA-RNTI
  • the AP can determine a unique timing to respond to the PRACH according to the received PRACH index and/or RA-RNTI pilot signal.
  • the network side determines the timing pilot signal to be sent to the UE according to the received PRACH, and may send the timing pilot signal within a preset time window.
  • the PRACH index or the corresponding relationship between the RA-RNTI and the timing pilot signal is preset, for example, the network side indicates the PRACH index and/or RA to the UE in system information such as SIB-1 - Correspondence between RNTI and timing pilot signal.
  • the timing pilot signal also corresponds to a PDCCH indicating the RAR message.
  • the UE detects the timing pilot signal within a predefined time window, and after successfully detecting the timing pilot signal, detects the PDCCH and the RAR message indicating the RAR message according to the timing of the timing pilot signal.
  • the third message includes the index of the best timing pilot signal obtained by measurement; the timing pilot signal satisfies at least one of the following: the index of PRACH and the timing pilot signal satisfy a one-to-many relationship; The RA-RNTI and the timing pilot signal satisfy a one-to-many relationship.
  • the AP can send multiple responses to the PRACH according to the received PRACH index and/or RA-RNTI timing pilot signal.
  • the PRACH index and/or the corresponding relationship between the RA-RNTI and the timing pilot signal is preset, for example, the network side indicates the PRACH index or RA to the UE in system information such as SIB-1 - Correspondence between RNTI and timing pilot signal.
  • the index of the PRACH and/or the RA-RNTI and the timing pilot signal satisfy a 1-N (N greater than 1) correspondence.
  • the network side After receiving the PRACH sent by the UE, the network side selects M timing pilot signals according to the corresponding relationship and sends them within a preset time window. Wherein, N ⁇ M>1).
  • the precoding used for each timing pilot signal, the AP used to transmit each timing pilot signal, the timing of each timing pilot signal may be different.
  • the UE detects M timing pilot signals within a preset time window, and detects the PDCCH and the RAR message indicating the RAR message based on the best pilot signal index. If the detection of M timing pilot signals is successful, the UE further reports the best pilot index obtained by detection in Msg3 according to the indication information in the RAR message. If the detection of M timing pilot signals fails (no one of the N timing pilot signals is detected), it may be considered that the random access request initiated by the UE fails, and the subsequent PDCCH indicating the RAR message may not be detected.
  • the PDCCH corresponding to each timing pilot signal is different, and the RAR message indicated by each PDCCH is different; or, the PDCCH corresponding to each timing pilot signal is different, and the RAR message indicated by each PDCCH is the same; or, The PDCCH corresponding to each timing pilot signal is the same, and the RAR message indicated by each PDCCH is the same.
  • FIG. 3 is a schematic diagram of a corresponding relationship among a timing pilot signal, a PDCCH, and an RAR according to an embodiment.
  • each timing pilot signal corresponds to one PDCCH indicating an RAR message.
  • Different timing pilot signals correspond to different PDCCHs, and each PDCCH indicates different RAR messages.
  • FIG. 4 is a schematic diagram of a corresponding relationship among a timing pilot signal, a PDCCH, and an RAR provided by another embodiment.
  • each timing pilot signal corresponds to one PDCCH indicating an RAR message
  • different PDCCHs corresponding to different timing pilot signals are different
  • the RAR indicated by each PDCCH is the same.
  • FIG. 5 is a schematic diagram of a corresponding relationship among a timing pilot signal, a PDCCH, and an RAR provided by yet another embodiment.
  • each timing pilot corresponds to one PDCCH indicating an RAR message
  • the PDCCHs corresponding to different timing pilot signals are the same
  • the RAR messages indicated by each PDCCH are the same.
  • step 120 includes:
  • the RAR message and the PDCCH are detected when the timing pilot signal is received within a preset time window.
  • the method also includes:
  • Step 140 If the timing pilot signal is not received within a preset time window, the RAR message and the PDCCH are not detected.
  • the AP sends a timing pilot signal in response to the PRACH within the preset time window. If the UE does not detect the timing pilot signal within the preset time window, it is considered that the random access request fails, and the subsequent RAR may not be processed.
  • the message and the PDCCH indicating the RAR message are detected, thereby reducing the complexity of the UE detecting the PDCCH, and also accelerating the UE to re-initiate random access and improving the efficiency of access.
  • each timing pilot signal occupies K control channel elements (Control Channel Element, CCE), and K is an integer greater than 1.
  • the network side can send one or more timing pilot signals in response to the PRACH.
  • the timing pilot signals are sent in the public search space configured by the network, and each pilot signal occupies K (K>1) CCEs.
  • K is an element in the aggregation level set of PDCCH; or, K is determined according to the aggregation level of PDCCH.
  • the K value has the following two determination methods:
  • K is determined by the aggregation level of the PDCCH indicating the RAR message. For example, when the aggregation level (marked as A) of the PDCCH indicating the RAR message is 1, 2, 4 or 8, correspondingly, K is 1, 2, 4 or 8, or, Wherein, P is a preset integer greater than 1.
  • the CCE occupied by each timing pilot signal and the CCE occupied by the corresponding PDCCH belong to the same CCE candidate set; the position of the CCE occupied by each timing pilot signal in the CCE candidate set The index is the same as or different from the position index of the CCE occupied by the corresponding PDCCH in the CCE candidate set.
  • the CCE occupied by each timing pilot signal and the CCE occupied by the corresponding PDCCH belong to the same CCE candidate set.
  • A may be one of 1, 2, 4, 8, 16, and 32
  • the PDCCH can be used in multiple candidate Location transmission, where each location includes A CCEs.
  • the number of candidate positions is Q, and different positions are represented by indices 1, 2, 3...Q respectively, the position where the timing pilot signal is sent is also one of the Q positions.
  • the location where the timing pilot signal is sent and the location where the PDCCH is sent belong to the same set, but may correspond to different location indices.
  • the timing pilot signal and the PDCCH may be sent in different time slots, or may be sent in the same time slot.
  • the position where the timing pilot signal is sent and the position where the PDCCH is sent not only belong to the same set, but also correspond to the same position. In this case, the timing pilot signal and the PDCCH are sent in different time slots.
  • it also includes:
  • Step 100 Receive a system message, where the system message includes at least one of the following: the relationship between the index of the PRACH and the timing pilot signal; the relationship between the RA-RNTI of the PRACH and the timing pilot signal.
  • the network side may notify the PRACH index and/or in a system message such as SIB-1 Or the relationship between the RA-RNTI and the timing pilot signal.
  • an access control method is also provided.
  • An AP that receives a PRACH can be used as a candidate access point for a UE to access a network, and sends a timing pilot signal, a RAR message, and a PDCCH indicating the RAR message to the UE. , which expands the access points that can be selected by the UE, so that the terminal can obtain a higher quality of service.
  • FIG. 6 is a flowchart of an access control method provided by an embodiment. As shown in FIG. 6 , the method provided by this embodiment includes step 210 and step 220 .
  • step 210 when PRACH is received, a timing pilot signal for responding to the PRACH, a RAR message, and a PDCCH for indicating the RAR message are sent, and the timing of the RAR message and the PDCCH is based on The timing of the timing pilot signal is determined.
  • step 220 when the third message is detected, a fourth message is sent, where the fourth message is used to notify that the terminal has accessed the network.
  • the UE sends a PRACH
  • one or more APs on the network side may receive the PRACH sent by the UE.
  • each AP can send a timing pilot signal to the UE in response to the PRACH.
  • the timing of the timing pilot signal may or may not be the same as the timing of the SSB or SIB-1.
  • each AP also sends a RAR message and a PDCCH indicating the RAR message.
  • the timing of the RAR message and the PDCCH is related to the timing of the sent timing pilot signal.
  • the UE After the UE receives the timing pilot signal, it will send Msg3 to the AP that sent the timing pilot signal, thereby requesting the AP to access the network.
  • the AP detects Msg3, it sends Msg4 to the UE to notify the UE that the access to the network is successful.
  • step 210 includes:
  • the timing pilot signal, the RAR message and the PDCCH are sent according to the instruction of the control node or according to the negotiation result of the AP responding to the PRACH.
  • the AP that sends the timing pilot signal, the RAR message, and the PDCCH may be determined according to the received PRACH signal strength, timing information, AP load and/or available resources, etc., and may be determined by mutual negotiation between the APs that receive the PRACH signal , or determined by a central control node according to the information reported by the AP that has received the PRACH signal.
  • the RAR message and PDCCH follow the timing of the timing pilot signal.
  • the timing pilot signal satisfies at least one of the following: the index of the PRACH and the timing pilot signal satisfy a one-to-one relationship; the RA-RNTI of the PRACH and the timing pilot Signals satisfy a one-to-one relationship.
  • the third message includes an index of the best timing pilot signal obtained by measurement; the timing pilot signal satisfies at least one of the following: the index of the PRACH and the timing pilot signal satisfy A one-to-many relationship; the RA-RNTI of the PRACH and the timing pilot signal satisfy a one-to-many relationship.
  • the PDCCH corresponding to each timing pilot signal is different, and the RAR message indicated by each PDCCH is different; or, the PDCCH corresponding to each timing pilot signal is different, and the RAR message indicated by each PDCCH is the same; or, The PDCCH corresponding to each timing pilot signal is the same, and the RAR message indicated by each PDCCH is the same.
  • it also includes:
  • Step 230 Update the precoding information, timing information and AP set for sending the timing pilot signal of each timing pilot signal according to the best pilot index.
  • the precoding used by each timing pilot signal, the precoding used for each timing pilot signal, and the value of the timing pilot signal to transmit The timing information of the AP set and the timing pilot signal may be different.
  • the AP can update the precoding information, timing information of each timing pilot signal, and the AP set that sends the timing pilot signal, that is, the AP3 in the above embodiment, so as to further improve the AP3 optimization, so that the UE can obtain better service quality, and can achieve higher spectral efficiency after the random access is successful.
  • sending a timing pilot signal in response to the PRACH includes:
  • a timing pilot signal for responding to the PRACH is determined according to the PRACH, and the pilot signal for responding to the PRACH is sent within a preset time window.
  • each pilot signal occupies K CCEs, and K is an integer greater than 1.
  • K is an element in the aggregation level set of PDCCH; or, K is determined according to the aggregation level of PDCCH.
  • the CCE occupied by each timing pilot signal and the CCE occupied by the corresponding PDCCH belong to the same CCE candidate set; the position of the CCE occupied by each timing pilot signal in the CCE candidate set The index is the same as or different from the position index of the CCE occupied by the corresponding PDCCH in the CCE candidate set.
  • it also includes:
  • Step 200 Send a system message, where the system message includes at least one of the following: the relationship between the index of the PRACH and the timing pilot signal; the relationship between the RA-RNTI of the PRACH and the timing pilot signal.
  • FIG. 7 is a schematic structural diagram of a random access apparatus according to an embodiment. As shown in FIG. 7 , the random access apparatus includes: a channel sending module 310 , a pilot frequency receiving module 320 and a third message sending module 330 .
  • the channel sending module 310 is configured to send PRACH;
  • the pilot frequency receiving module 320 is configured to receive the timing pilot signal for responding to the PRACH, and to detect the RAR message and the PDCCH for indicating the RAR message, the RAR message and the timing of the PDCCH is determined based on the timing of the timing pilot signal;
  • the third message sending module 330 is configured to send a third message according to the timing pilot signal, the RAR message and the PDCCH, the Three messages are used to request access to the network.
  • the random access device in this embodiment selects an AP to access from among APs capable of responding to PRACH by receiving a timing pilot signal, thereby expanding the selectable access points and enabling the terminal to obtain higher service quality.
  • the timing pilot signal satisfies at least one of the following: the index of the PRACH and the timing pilot signal satisfy a one-to-one relationship; the random access of the PRACH-radio network temporary identifier RA - RNTI and the timing pilot signal satisfy a one-to-one relationship.
  • the third message includes an index of the best timing pilot signal obtained by measurement; the timing pilot signal satisfies at least one of the following: the index of the PRACH and the timing pilot signal satisfy A one-to-many relationship; the RA-RNTI of the PRACH and the timing pilot signal satisfy a one-to-many relationship.
  • the PDCCH corresponding to each timing pilot signal is different, and the RAR message indicated by each PDCCH is different; or, the PDCCH corresponding to each timing pilot signal is different, and the RAR message indicated by each PDCCH is the same; or, The PDCCH corresponding to each timing pilot signal is the same, and the RAR message indicated by each PDCCH is the same.
  • the pilot frequency receiving module 320 is configured to: detect the RAR message and the PDCCH when the timing pilot signal is received within a preset time window; the pilot frequency receiving module 320 is further configured to detect the RAR message and the PDCCH.
  • the setting is: in the case that the timing pilot signal is not received within a preset time window, the RAR message and the PDCCH are not detected.
  • the timing pilot signal is at least one; each timing pilot signal occupies K CCEs, and K is an integer greater than 1.
  • K is an element in the aggregation level set of PDCCH; or, K is determined according to the aggregation level of PDCCH.
  • the CCE occupied by each timing pilot signal and the CCE occupied by the corresponding PDCCH belong to the same CCE candidate set; the position of the CCE occupied by each timing pilot signal in the CCE candidate set The index is the same as or different from the position index of the CCE occupied by the corresponding PDCCH in the CCE candidate set.
  • it further includes: a system message receiving module configured to receive a system message, where the system message includes at least one of the following: the relationship between the index of the PRACH and the timing pilot signal; The relationship between the RA-RNTI and the timing pilot signal.
  • a system message receiving module configured to receive a system message, where the system message includes at least one of the following: the relationship between the index of the PRACH and the timing pilot signal; The relationship between the RA-RNTI and the timing pilot signal.
  • the random access apparatus proposed in this embodiment belongs to the same concept as the random access method proposed in the above-mentioned embodiment.
  • this embodiment has the ability to perform random access and perform random access. the same effect as the input method.
  • FIG. 8 is a schematic structural diagram of an access control apparatus according to an embodiment. As shown in FIG. 8 , the access control apparatus includes: a pilot frequency sending module 410 and a fourth message sending module 420 .
  • the pilot frequency sending module 410 is configured to send a timing pilot signal for responding to the PRACH, a RAR message and a PDCCH for indicating the RAR message, the RAR message and the PDCCH when the PRACH is received
  • the timing is determined based on the timing of the timing pilot signal
  • the fourth message sending module 420 is configured to send a fourth message when a third message is detected, and the fourth message is used to notify the terminal that it has accessed the network .
  • the random access device in this embodiment extends the UE's selectable access points by sending a timing pilot signal, an RAR message, and a PDCCH indicating the RAR message to the UE, so that the terminal can obtain higher service quality.
  • the pilot sending module 410 is configured to send the timing pilot signal, the RAR message and the PDCCH according to an instruction of a control node or according to a negotiation result of the AP responding to the PRACH.
  • the timing pilot signal satisfies at least one of the following: the index of the PRACH and the timing pilot signal satisfy a one-to-one relationship; the RA-RNTI of the PRACH and the timing pilot Signals satisfy a one-to-one relationship.
  • the third message includes an index of the best timing pilot signal obtained by measurement; the timing pilot signal satisfies at least one of the following: the index of the PRACH and the timing pilot signal satisfy A one-to-many relationship; the RA-RNTI of the PRACH and the timing pilot signal satisfy a one-to-many relationship.
  • the PDCCH corresponding to each timing pilot signal is different, and the RAR message indicated by each PDCCH is different; or, the PDCCH corresponding to each timing pilot signal is different, and the RAR message indicated by each PDCCH is the same; or, The PDCCH corresponding to each timing pilot signal is the same, and the RAR message indicated by each PDCCH is the same.
  • the method further includes: an update module configured to update the precoding information, timing information and AP set for sending the timing pilot signal of each timing pilot signal according to the best pilot index.
  • the pilot transmission module 410 includes: a pilot signal transmission unit, configured to determine a timing pilot signal for responding to the PRACH according to the PRACH, and send the pilot signal within a preset time window. A pilot signal for responding to the PRACH.
  • the timing pilot signal is at least one; each pilot signal occupies K CCEs, and K is an integer greater than 1.
  • K is an element in the aggregation level set of PDCCH; or, K is determined according to the aggregation level of PDCCH.
  • the CCE occupied by each timing pilot signal and the CCE occupied by the corresponding PDCCH belong to the same CCE candidate set; the position of the CCE occupied by each timing pilot signal in the CCE candidate set The index is the same as or different from the position index of the CCE occupied by the corresponding PDCCH in the CCE candidate set.
  • it further includes: a system message sending module configured to send a system message, where the system message includes at least one of the following: the relationship between the index of the PRACH and the timing pilot signal; The relationship between the RA-RNTI and the timing pilot signal.
  • a system message sending module configured to send a system message, where the system message includes at least one of the following: the relationship between the index of the PRACH and the timing pilot signal; The relationship between the RA-RNTI and the timing pilot signal.
  • the access control apparatus proposed in this embodiment belongs to the same concept as the access control method proposed in the above-mentioned embodiment.
  • FIG. 9 is a schematic diagram of a hardware structure of a terminal provided by an embodiment.
  • the terminal provided by the present application includes a memory 52, a processor 51, and a A computer program that can be run on the processor, the processor 51 implements the above random access method when the program is executed.
  • the terminal may also include a memory 52; the number of processors 51 in the terminal may be one or more, and one processor 51 is taken as an example in FIG. 9; the memory 52 is used to store one or more programs; the one or more programs Executed by the one or more processors 51, so that the one or more processors 51 implement the random access method described in the embodiments of the present application.
  • the terminal also includes: a communication device 53 , an input device 54 and an output device 55 .
  • the processor 51 , the memory 52 , the communication device 53 , the input device 54 and the output device 55 in the terminal may be connected by a bus or in other ways, and the connection by a bus is taken as an example in FIG. 9 .
  • the input device 54 can be used to receive input numerical or character information, and generate key signal input related to user settings and function control of the terminal.
  • the output device 55 may include a display device such as a display screen.
  • the communication device 53 may include a receiver and a transmitter.
  • the communication device 53 is configured to transmit and receive information according to the control of the processor 51 .
  • the memory 52 can be configured to store software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the random access method described in the embodiments of the present application (for example, in the random access device).
  • the memory 52 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal, and the like.
  • memory 52 may include high speed random access memory, and may also include nonvolatile memory, such as at least one magnetic disk storage device, flash memory device, or other nonvolatile solid state storage device.
  • the memory 52 may further include memory located remotely from the processor 51, and these remote memories may be connected to the terminal through a network.
  • networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.
  • FIG. 10 is a schematic diagram of a hardware structure of an access point provided by an embodiment.
  • the access point provided by the present application includes a memory 62, a processing The processor 61 and a computer program stored in the memory and running on the processor, when the processor 61 executes the program, implements the above-mentioned access control method.
  • the access point may also include a memory 62; the access point may have one or more processors 61, and one processor 61 is taken as an example in FIG. 10; the memory 62 is used to store one or more programs; the one One or more programs are executed by the one or more processors 61, so that the one or more processors 61 implement the access control method described in the embodiments of the present application.
  • the access point also includes: a communication device 63 , an input device 64 and an output device 65 .
  • the processor 61 , the memory 62 , the communication device 63 , the input device 64 and the output device 65 in the access point may be connected by a bus or in other ways, and the connection by a bus is taken as an example in FIG. 10 .
  • the input device 64 may be used to receive input numerical or character information, and to generate key signal input related to user settings and function control of the access point.
  • the output device 65 may include a display device such as a display screen.
  • the communication device 63 may include a receiver and a transmitter.
  • the communication device 63 is configured to transmit and receive information according to the control of the processor 61 .
  • the memory 62 can be configured to store software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the access control method described in the embodiments of the present application (for example, in the access control device). the pilot frequency sending module 410 and the fourth message sending module 420).
  • the memory 62 may include a stored program area and a stored data area, wherein the stored program area may store an operating system, an application program required for at least one function; the stored data area may store data created according to use of the access point, and the like. Additionally, memory 62 may include high speed random access memory, and may also include nonvolatile memory, such as at least one magnetic disk storage device, flash memory device, or other nonvolatile solid state storage device.
  • memory 62 may further include memory located remotely relative to processor 61, which may be connected to the access point through a network.
  • networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.
  • An embodiment of the present application further provides a storage medium, where a computer program is stored in the storage medium, and when the computer program is executed by a processor, the random access method or the access control method described in any of the embodiments of the present application is implemented.
  • the random access method includes: sending a PRACH; receiving a timing pilot signal for responding to the PRACH, and detecting a RAR message and a PDCCH for indicating the RAR message, where the timing of the RAR message and the PDCCH is based on The timing of the timing pilot signal is determined; a third message is sent according to the timing pilot signal, the RAR message and the PDCCH, where the third message is used to request access to the network.
  • the access control method includes: when PRACH is received, sending a timing pilot signal for responding to the PRACH, a RAR message and a PDCCH for indicating the RAR message, the RAR message and the PDCCH
  • the timing of the timing pilot signal is determined based on the timing of the timing pilot signal; when a third message is detected, a fourth message is sent, and the fourth message is used to notify the terminal that it has accessed the network.
  • the computer storage medium of the embodiments of the present application may adopt any combination of one or more computer-readable media.
  • the computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium.
  • the computer readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus or device, or a combination of any of the above.
  • Examples (non-exhaustive list) of computer readable storage media include: electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read only memory (Read Only Memory) Memory, ROM), erasable programmable read only memory (Erasable Programmable Read Only Memory, EPROM), flash memory, optical fiber, portable CD-ROM, optical storage device, magnetic storage device, or any suitable combination of the above.
  • a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in connection with an instruction execution system, apparatus, or device.
  • a computer-readable signal medium may include a propagated data signal in baseband or as part of a carrier wave, with computer-readable program code embodied thereon. Such propagated data signals may take a variety of forms including, but not limited to, electromagnetic signals, optical signals, or any suitable combination of the foregoing.
  • a computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device .
  • Program code embodied on a computer-readable medium may be transmitted using any suitable medium, including but not limited to: wireless, wire, optical fiber cable, radio frequency (RF), etc., or any suitable combination of the foregoing.
  • suitable medium including but not limited to: wireless, wire, optical fiber cable, radio frequency (RF), etc., or any suitable combination of the foregoing.
  • Computer program code for carrying out the operations of the present application may be written in one or more programming languages, including object-oriented programming languages, such as Java, Smalltalk, C++, and conventional A procedural programming language, such as the "C" language or similar programming language.
  • the program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer, or entirely on the remote computer or server.
  • the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or Wide Area Network (WAN), or may be connected to an external computer (eg use an internet service provider to connect via the internet).
  • LAN Local Area Network
  • WAN Wide Area Network
  • user terminal encompasses any suitable type of wireless user equipment, such as a mobile telephone, portable data processing device, portable web browser or vehicle mounted mobile station.
  • the various embodiments of the present application may be implemented in hardware or special purpose circuits, software, logic, or any combination thereof.
  • some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software that may be executed by a controller, microprocessor or other computing device, although the application is not so limited.
  • Embodiments of the present application may be implemented by the execution of computer program instructions by a data processor of a mobile device, eg in a processor entity, or by hardware, or by a combination of software and hardware.
  • Computer program instructions may be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or written in any combination of one or more programming languages source or object code.
  • ISA Instruction Set Architecture
  • the block diagrams of any logic flow in the figures of the present application may represent program steps, or may represent interconnected logic circuits, modules and functions, or may represent a combination of program steps and logic circuits, modules and functions.
  • Computer programs can be stored on memory.
  • the memory may be of any type suitable for the local technical environment and may be implemented using any suitable data storage technology, such as, but not limited to, Read-Only Memory (ROM), Random Access Memory (RAM), optical Memory devices and systems (Digital Video Disc (DVD) or Compact Disk (CD), etc.
  • Computer readable media may include non-transitory storage media.
  • Data processors may be any suitable for the local technical environment Type, such as but not limited to general-purpose computer, special-purpose computer, microprocessor, digital signal processor (Digital Signal Processing, DSP), application specific integrated circuit (Application Specific Integrated Circuit, ASIC), programmable logic device (Field-Programmable Gate Array , FPGA) and processors based on multi-core processor architectures.
  • DSP Digital Signal Processing
  • ASIC Application Specific Integrated Circuit
  • FPGA Field-Programmable Gate Array
  • processors based on multi-core processor architectures.

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Abstract

本文公开一种随机接入方法、接入控制方法、终端、接入点及存储介质。该随机接入方法包括：发送物理随机接入信道PRACH；接收用于响应所述PRACH的定时导频信号，并检测随机接入响应RAR消息以及用于指示所述RAR消息的物理下行控制信道PDCCH，所述RAR消息以及所述PDCCH的定时基于所述定时导频信号的定时确定；根据所述定时导频信号、所述RAR消息以及所述PDCCH发送第三消息，所述第三消息用于请求接入网络。

Description

随机接入方法、接入控制方法、终端、接入点及存储介质 技术领域
本申请涉及无线通信网络领域，例如涉及一种随机接入方法、接入控制方法、终端、接入点及存储介质。
背景技术
随着微小区、小小区、家庭基站以及中继节点等多种低功率接入点的部署和应用，蜂窝网络呈现出越来越异构化、密集化的趋势。出于节能或者降低干扰的目的，一部分接入点(Access Point，AP)在业务稀疏时处于关闭状态，终端可在提供覆盖的AP中选择一个接入网络服务。但是，提供覆盖的AP与提供容量的AP是独立的，提供覆盖的AP并不一定能为终端提供最佳的服务。终端仅在处于工作状态的AP中选择接入的AP，这种情况下，无法保证所选择的AP是服务质量最佳的，不仅会影响终端的通信效率，也容易造成功率或频谱资源的浪费。
发明内容
本申请提供一种随机接入方法、接入控制方法、终端、接入点及存储介质，扩展了可选择的接入点，使终端能够获得更高的服务质量。
本申请实施例提供一种随机接入方法，应用于终端，包括：
发送物理随机接入信道(Physical Random Access Channel，PRACH)；接收用于响应所述PRACH的定时导频信号，并检测随机接入响应(Random Access Response，RAR)消息以及用于指示所述RAR消息的物理下行控制信道(Physical Downlink Control Channel，PDCCH)，所述RAR消息以及所述PDCCH的定时基于所述定时导频信号的定时确定；根据所述定时导频信号、所述RAR消息以及所述PDCCH发送第三消息，所述第三消息用于请求接入网络。
本申请实施例还提供了一种接入控制方法，应用于接入点，包括：
在接收到PRACH的情况下，发送用于响应所述PRACH的定时导频信号、RAR消息以及用于指示所述RAR消息的PDCCH，所述RAR消息以及所述PDCCH的定时基于所述定时导频信号的定时确定；在检测到第三消息的情况下，发送第四消息，所述第四消息用于通知终端已接入网络。
本申请实施例还提供了一种终端，包括：存储器、处理器以及存储在存储 器上并可在处理器上运行的计算机程序，所述处理器执行所述程序时实现上述的随机接入方法。
本申请实施例还提供了一种接入点，包括：存储器、处理器以及存储在存储器上并可在处理器上运行的计算机程序，所述处理器执行所述程序时实现上述的接入控制方法。
本申请实施例还提供了一种计算机可读存储介质，计算机可读存储介质上存储有计算机程序，该程序被处理器执行时实现上述的随机接入或接入控制方法。
附图说明
图1为一实施例提供的一种随机接入方法的流程图；
图2为一实施例提供的随机接入过程的示意图；
图3为一实施例提供的定时导频信号、PDCCH以及RAR之间的对应关系的示意图；
图4为另一实施例提供的定时导频信号、PDCCH以及RAR之间的对应关系的示意图；
图5为又一实施例提供的定时导频信号、PDCCH以及RAR之间的对应关系的示意图；
图6为一实施例提供的一种接入控制方法的流程图；
图7为一实施例提供的一种随机接入装置的结构示意图；
图8为一实施例提供的一种接入控制装置的结构示意图；
图9为一实施例提供的一种终端的硬件结构示意图；
图10为一实施例提供的一种接入点的硬件结构示意图。
具体实施方式
下面结合附图和实施例对本申请进行说明。此处所描述的具体实施例仅仅用于解释本申请。为了便于描述，附图中仅示出了与本申请相关的部分。
在本申请实施例中，提供一种随机接入方法，终端接收定时导频信号，从而在能够响应PRACH的AP中选择接入的AP，扩展了可选择的接入点，使终端能够获得更高的服务质量。
图1为一实施例提供的一种随机接入方法的流程图，如图1所示，本实施 例提供的方法包括步骤110-130。
在步骤110中，发送物理随机接入信道PRACH。
在步骤120中，接收用于响应所述PRACH的定时导频信号，并检测随机接入响应RAR消息以及用于指示所述RAR消息的物理下行控制信道PDCCH，所述RAR消息以及所述PDCCH的定时基于所述定时导频信号的定时确定。
所述RAR消息的定时基于所述定时导频信号的定时确定包括RAR消息的定时与所述定时导频信号的定时相同，或者在所述定时导频信号的定时基础上确定RAR消息的定时，比如根据RAR消息相关的导频在所述定时导频信号的定时基础上对RAR消息的定时进行调整等。所述PDCCH的定时基于所述定时导频信号的定时确定与此类似。
在步骤130中，根据所述定时导频信号、所述RAR消息以及所述PDCCH发送第三消息，所述第三消息用于请求接入网络。
本实施例中，终端例如为用户设备(User Equipment，UE)。UE发送PRACH，网络侧可能有一个或多个AP接收到UE发送的PRACH，每个AP在接收到PRACH后，都可以向UE发送一个响应该PRACH的定时导频信号，该定时导频信号的定时与同步信号和物理广播信道块(Synchronization Signal and PBCH Block，SSB)或系统信息块(System Information Block，SIB)的SIB-1的定时可以相同，也可以不同。每个AP在发送定时导频信号后，还发送一个RAR消息以及指示该RAR消息的PDCCH，RAR消息以及PDCCH的定时与发送的定时导频信号的定时相关。在此基础上，每个发送相关的定时导频信号、RAR消息和PDCCH的AP都可以作为UE接入网络的候选AP，候选AP并不局限于处于工作状态的AP，从而使UE接入网络具有更多的选择，使UE能够获得最佳的服务质量。
图2为一实施例提供的随机接入过程的示意图。本实施例中，发送SSB或SIB-1的AP构成的集合记为AP1，接收PRACH信号的AP构成的集合记为AP2，可为UE提供服务或供UE接入网络的AP构成的集合记为AP3。如图2所示，对于要接入无线网络的UE，其根据AP1的SIB-1的指示发送PRACH信号，该PRACH信号可以被一个或多个AP接收，接收该PRACH信号的AP构成AP2，AP2不仅包括发送SSB或SIB-1的AP，还可以包括没有发送SSB或SIB-1的AP，甚至可以包括处于节能及降低干扰等目的而处于休眠状态的AP。AP3可以根据接收的PRACH信号强度、定时信息、AP的负载和/或可用资源等从AP2中确定，AP3可以由AP2中的AP相互协商确定，或者由一个中心控制节点根据AP2上报的信息确定。AP3在发送定时导频信号后，还发送RAR消息和指示该RAR消息的PDCCH，并且RAR消息和PDCCH遵循定时导频信号的定时。
AP3发送的与PRACH对应的定时导频信号，不仅可以用于供UE确定传输过程中的定时信息，还可供UE进行信道状态测量以及信道估计等。由于SSB或SIB-1通常用于为较大的覆盖范围内的UE提供服务，发送SSB或SIB-1的AP与UE之间的距离较远，而定时导频信号是针对发送PRACH的UE提供服务，发送定时导频信号的AP是根据接收的PRACH的信号强度、定时信息、AP负载和/或可用资源等确定的，通常是与发送PRACH的UE距离较近的AP，该定时导频信号的定时与UE的定时可能存在较大差异，与SSB或SIB-1的定时也可能有较大差异。
UE接收定时导频信号，在接收定时导频信号成功的情况下，进一步对PDCCH及RAR消息进行检测，在对PDCCH及RAR消息都检测成功的基础上发送Msg3，Msg3中包括UE标识等，从而向AP3请求接入网络。AP3在成功检测Msg3的基础上发送Msg4以通知UE接入网络成功。
在一实施例中，定时导频信号满足以下至少之一：PRACH的索引与定时导频信号满足一对一的关系；PRACH的随机接入-无线网络临时标识(Rand Access-Radio Network Temporary Identity，RA-RNTI)与定时导频信号满足一对一的关系。
本实施例中，UE发送的PRACH与定时导频信号之间具有一对一的对应关系，即，AP根据接收到的PRACH的索引和/或RA-RNTI，可以确定唯一的响应该PRACH的定时导频信号。
网络侧可能有多个可用的定时导频信号，不同的定时导频信号使用的导频序列可能不同，或者使用的资源不同。网络侧根据接收的PRACH确定发送给UE的定时导频信号，并可以在预设的时间窗内发送该定时导频信号。在一些实施例中，PRACH的索引或者RA-RNTI与定时导频信号之间的对应关系是预先设定的，例如网络侧在SIB-1等系统信息中向UE指示PRACH的索引和/或RA-RNTI与定时导频信号之间的对应关系。在此基础上，定时导频信号还对应于一个指示RAR消息的PDCCH。在接收端，UE在一个预定义的时间窗内检测定时导频信号，检测定时导频信号成功后根据该定时导频信号的定时对指示RAR消息的PDCCH及RAR消息进行检测。
在一实施例中，第三消息中包含测量得到的最佳定时导频信号的索引；定时导频信号满足以下至少之一：PRACH的索引与定时导频信号满足一对多的关系；PRACH的RA-RNTI与定时导频信号满足一对多的关系。
本实施例中，UE发送的PRACH与定时导频信号之间具有一对多的对应关系，即，AP根据接收到的PRACH的索引和/或RA-RNTI，可以发送多个用于响应该PRACH的定时导频信号。在一些实施例中，PRACH的索引和/或 RA-RNTI与定时导频信号之间的对应关系是预先设定的，例如网络侧在SIB-1等系统信息中向UE指示PRACH的索引或者RA-RNTI与定时导频信号之间的对应关系。例如，PRACH的索引和/或RA-RNTI与定时导频信号之间满足1-N(N大于1)的对应关系。网络侧在收到UE发送的PRACH后，根据对应关系，从中选择M个定时导频信号并在预设的时间窗内发送。其中，N≥M＞1)。在一些实施例中，每个定时导频信号所使用的预编码、发送每个定时导频信号所使用的AP、每个定时导频信号的定时可以不同。
在接收端，UE在预设的时间窗内对M个定时导频信号进行检测，并基于最佳导频信号索引对指示RAR消息的PDCCH及RAR消息进行检测。如果检测M个定时导频信号成功，UE进一步根据RAR消息中的指示信息，在Msg3中上报检测得到的最佳导频索引。如果检测M个定时导频信号失败(没有检测到N个定时导频信号的任意一个)，则可以认为UE发起的随机接入请求失败，可以不用对后续的指示RAR消息的PDCCH进行检测。
在一实施例中，每个定时导频信号对应的PDCCH不同，每个PDCCH指示的RAR消息不同；或者，每个定时导频信号对应的PDCCH不同，每个PDCCH指示的RAR消息相同；或者，每个定时导频信号对应的PDCCH相同，每个PDCCH指示的RAR消息相同。
图3为一实施例提供的定时导频信号、PDCCH以及RAR之间的对应关系的示意图。如图3所示，每个定时导频信号对应1个指示RAR消息的PDCCH，不同的定时导频信号对应的PDCCH不同，且每个PDCCH指示的RAR消息也不同。
图4为另一实施例提供的定时导频信号、PDCCH以及RAR之间的对应关系的示意图。如图4所示，每个定时导频信号对应1个指示RAR消息的PDCCH，不同的定时导频信号对应的PDCCH不同，且每个PDCCH指示的RAR为同一个。
图5为又一实施例提供的定时导频信号、PDCCH以及RAR之间的对应关系的示意图。如图5所示，每个定时导频对应1个指示RAR消息的PDCCH，不同的定时导频信号对应的PDCCH为同一个，每个PDCCH指示的RAR消息为同一个。
在一实施例中，步骤120，包括：
在预设时间窗内接收到所述定时导频信号的情况下，检测所述RAR消息和所述PDCCH。
所述方法还包括：
步骤140：在预设时间窗内未接收到所述定时导频信号的情况下，不检测所述RAR消息和PDCCH。
本实施例中，AP在预设时间窗内发送响应PRACH的定时导频信号，如果UE在预设时间窗内没有检测到定时导频信号，则认为随机接入请求失败，可以不对后续的RAR消息以及指示RAR消息的PDCCH进行检测，从而降低UE检测PDCCH的复杂度，并且也加速了UE重新发起随机接入，提高接入的效率。
在一实施例中，定时导频信号为至少一个；每个定时导频信号占用K个控制信道元(Control Channel Element，CCE)，K为大于1的整数。
本实施例中，网络侧在接收到UE发送的PRACH后，可发送一个或多个响应该PRACH的定时导频信号，定时导频信号在网络配置的公共搜索空间发送，每个导频信号占用K(K＞1)个CCE。
在一实施例中，K为PDCCH的聚合等级集合中的一个元素；或者，K根据PDCCH的聚合等级确定。
本实施例中，K值有如下两种确定方法：
方法1：K为一个预设的常数，将指示RAR消息的PDCCH的聚合等级集合记为S，例如S＝{1,2,4,8,16,32}，K为集合S中的一个元素，例如K＝1。
方法2：K由指示RAR消息的PDCCH的聚合等级确定，例如指示RAR消息的PDCCH的聚合等级(记为A)为1、2、4或8时，相应的，K为1、2、4或8，或者，
Figure PCTCN2021123418-appb-000001
其中，P为一个大于1的预设整数。
在一实施例中，每个定时导频信号所占用的CCE与对应的PDCCH所占用的CCE属于相同的CCE候选集合；每个定时导频信号所占用的CCE在所述CCE候选集合中的位置索引，与对应的PDCCH所占用的CCE在所述CCE候选集合中的位置索引相同或者不同。
本实施例中，每个定时导频信号所占用的CCE与对应的PDCCH所占用的CCE属于同一个CCE候选集合。假设PDCCH的聚合等级为A(A可能是1,2,4,8,16,32中的1个值)，为提高系统的灵活性并降低PDCCH的阻塞率，该PDCCH可以在多个候选的位置发送，其中，每个位置都包括A个CCE。假设候选的位置的数目为Q，不同位置分别用索引1,2,3...Q表示，则发送定时导频信号的位置也是Q个位置中的1个。
在一些实施例中，发送定时导频信号的位置与发送PDCCH的位置属于同一个集合，但是可以对应不同的位置索引。这种情况下，定时导频信号和PDCCH可以在不同的时隙发送，也可以在相同的时隙发送。或者，发送定时导频信号 的位置与发送PDCCH的位置不仅属于同一个集合，而且对应相同的位置，这种情况下，定时导频信号和PDCCH在不同的时隙发送。
在一实施例中，还包括：
步骤100：接收系统消息，系统消息中包括以下至少之一：PRACH的索引与定时导频信号的关系；PRACH的RA-RNTI与定时导频信号的关系。
本实施例中，PRACH的索引和/或RA-RNTI与定时导频信号之间可能是一对一或一对多的关系；网络侧可在SIB-1等系统消息中通知PRACH的索引和/或RA-RNTI与定时导频信号之间的关系。
在本申请实施例中，还提供一种接入控制方法，接收到PRACH的AP可作为UE接入网络的候选接入点，向UE发送定时导频信号、RAR消息以及指示该RAR消息的PDCCH，扩展了UE可选择的接入点，使终端能够获得更高的服务质量。未在本实施例中详尽描述的技术细节可参见上述任意实施例。
图6为一实施例提供的一种接入控制方法的流程图，如图6所示，本实施例提供的方法包括步骤210和步骤220。
在步骤210中，在接收到PRACH的情况下，发送用于响应所述PRACH的定时导频信号、RAR消息以及用于指示所述RAR消息的PDCCH，所述RAR消息以及所述PDCCH的定时基于所述定时导频信号的定时确定。
在步骤220中，在检测到第三消息的情况下，发送第四消息，所述第四消息用于通知终端已接入网络。
本实施例中，UE发送PRACH，网络侧可能有一个或多个AP接收到UE发送的PRACH，每个AP在接收到PRACH后，都可以向UE发送一个响应该PRACH的定时导频信号，该定时导频信号的定时与SSB或SIB-1的定时可以相同，也可以不同。每个AP在发送定时导频信号后，还发送一个RAR消息以及指示该RAR消息的PDCCH，RAR消息以及PDCCH的定时与发送的定时导频信号的定时相关。UE在接收到定时导频信号后，会向发送定时导频信号的AP发送Msg3，从而向AP请求接入网络，AP检测到Msg3后，向UE发送Msg4，以通知UE接入网络成功。
在一实施例中，步骤210，包括：
根据控制节点的指令，或者根据响应所述PRACH的AP的协商结果，发送所述定时导频信号、所述RAR消息以及所述PDCCH。
本实施例中，发送定时导频信号、RAR消息以及PDCCH的AP可以根据 接收的PRACH信号强度、定时信息、AP的负载和/或可用资源等确定，可以由接收到PRACH信号的AP相互协商确定，或者由一个中心控制节点根据接收到PRACH信号的AP上报的信息确定。RAR消息和PDCCH遵循定时导频信号的定时。
在一实施例中，所述定时导频信号满足以下至少之一：所述PRACH的索引与所述定时导频信号满足一对一的关系；所述PRACH的RA-RNTI与所述定时导频信号满足一对一的关系。
在一实施例中，所述第三消息中包含测量得到的最佳定时导频信号的索引；所述定时导频信号满足以下至少之一：所述PRACH的索引与所述定时导频信号满足一对多的关系；所述PRACH的RA-RNTI与所述定时导频信号满足一对多的关系。
在一实施例中，每个定时导频信号对应的PDCCH不同，每个PDCCH指示的RAR消息不同；或者，每个定时导频信号对应的PDCCH不同，每个PDCCH指示的RAR消息相同；或者，每个定时导频信号对应的PDCCH相同，每个PDCCH指示的RAR消息相同。
在一实施例中，还包括：
步骤230：根据所述最佳导频索引更新每个定时导频信号的预编码信息、定时信息以及发送定时导频信号的AP集合。
本实施例中，在PRACH的索引和/或RA-RNTI与定时导频信号之间满足一对多的关系的情况下，每个定时导频信号所使用的预编码、发送定时导频信号的AP集合、定时导频信号的定时信息都可以不同。AP可根据Msg3中上报的最佳导频索引，更新每个定时导频信号的预编码信息、定时信息以及发送定时导频信号的AP集合，即上述实施例中的AP3，从而对AP3做进一步优化，使UE获得更佳的服务质量，在随机接入成功后能够实现更高的频谱效率。
在一实施例中，发送用于响应所述PRACH的定时导频信号，包括：
根据所述PRACH确定用于响应所述PRACH的定时导频信号，并在预设的时间窗内发送所述用于响应所述PRACH的导频信号。
在一实施例中，定时导频信号为至少一个；每个导频信号占用K个CCE，K为大于1的整数。
在一实施例中，K为PDCCH的聚合等级集合中的一个元素；或者，K根据PDCCH的聚合等级确定。
在一实施例中，每个定时导频信号所占用的CCE与对应的PDCCH所占用 的CCE属于相同的CCE候选集合；每个定时导频信号所占用的CCE在所述CCE候选集合中的位置索引，与对应的PDCCH所占用的CCE在所述CCE候选集合中的位置索引相同或者不同。
在一实施例中，还包括：
步骤200：发送系统消息，所述系统消息中包括以下至少之一：所述PRACH的索引与所述定时导频信号的关系；所述PRACH的RA-RNTI与所述定时导频信号的关系。
本申请实施例还提供一种随机接入装置。图7为一实施例提供的一种随机接入装置的结构示意图。如图7所示，所述随机接入装置包括：信道发送模块310、导频接收模块320以及第三消息发送模块330。
信道发送模块310，设置为发送PRACH；导频接收模块320，设置为接收用于响应所述PRACH的定时导频信号，并检测RAR消息以及用于指示所述RAR消息的PDCCH，所述RAR消息以及所述PDCCH的定时基于所述定时导频信号的定时确定；第三消息发送模块330，设置为根据所述定时导频信号、所述RAR消息以及所述PDCCH发送第三消息，所述第三消息用于请求接入网络。
本实施例的随机接入装置，通过接收定时导频信号，在能够响应PRACH的AP中选择接入的AP，扩展了可选择的接入点，使终端能够获得更高的服务质量。
在一实施例中，所述定时导频信号满足以下至少之一：所述PRACH的索引与所述定时导频信号满足一对一的关系；所述PRACH的随机接入-无线网络临时标识RA-RNTI与所述定时导频信号满足一对一的关系。
在一实施例中，所述第三消息中包含测量得到的最佳定时导频信号的索引；所述定时导频信号满足以下至少之一：所述PRACH的索引与所述定时导频信号满足一对多的关系；所述PRACH的RA-RNTI与所述定时导频信号满足一对多的关系。
在一实施例中，每个定时导频信号对应的PDCCH不同，每个PDCCH指示的RAR消息不同；或者，每个定时导频信号对应的PDCCH不同，每个PDCCH指示的RAR消息相同；或者，每个定时导频信号对应的PDCCH相同，每个PDCCH指示的RAR消息相同。
在一实施例中，导频接收模块320，设置为：在预设时间窗内接收到所述定时导频信号的情况下，检测所述RAR消息和所述PDCCH；导频接收模块320，还设置为：在预设时间窗内未接收到所述定时导频信号的情况下，不检测所述 RAR消息和PDCCH。
在一实施例中，所述定时导频信号为至少一个；每个定时导频信号占用K个CCE，K为大于1的整数。
在一实施例中，K为PDCCH的聚合等级集合中的一个元素；或者，K根据PDCCH的聚合等级确定。
在一实施例中，每个定时导频信号所占用的CCE与对应的PDCCH所占用的CCE属于相同的CCE候选集合；每个定时导频信号所占用的CCE在所述CCE候选集合中的位置索引，与对应的PDCCH所占用的CCE在所述CCE候选集合中的位置索引相同或者不同。
在一实施例中，还包括：系统消息接收模块，设置为接收系统消息，所述系统消息中包括以下至少之一：所述PRACH的索引与所述定时导频信号的关系；所述PRACH的RA-RNTI与所述定时导频信号的关系。
本实施例提出的随机接入装置与上述实施例提出的随机接入方法属于同一构思，未在本实施例中详尽描述的技术细节可参见上述任意实施例，并且本实施例具备与执行随机接入方法相同的效果。
本申请实施例还提供一种接入控制装置。图8为一实施例提供的一种接入控制装置的结构示意图。如图8所示，所述接入控制装置包括：导频发送模块410和第四消息发送模块420。
导频发送模块410，设置为在接收到PRACH的情况下，发送用于响应所述PRACH的定时导频信号、RAR消息以及用于指示所述RAR消息的PDCCH，所述RAR消息以及所述PDCCH的定时基于所述定时导频信号的定时确定；第四消息发送模块420，设置为在检测到第三消息的情况下，发送第四消息，所述第四消息用于通知终端已接入网络。
本实施例的随机接入装置，通过向UE发送定时导频信号、RAR消息以及指示该RAR消息的PDCCH，扩展了UE可选择的接入点，使终端能够获得更高的服务质量。
在一实施例中，导频发送模块410设置为：根据控制节点的指令，或者根据响应所述PRACH的AP的协商结果，发送所述定时导频信号、所述RAR消息以及所述PDCCH。
在一实施例中，所述定时导频信号满足以下至少之一：所述PRACH的索引与所述定时导频信号满足一对一的关系；所述PRACH的RA-RNTI与所述定时 导频信号满足一对一的关系。
在一实施例中，所述第三消息中包含测量得到的最佳定时导频信号的索引；所述定时导频信号满足以下至少之一：所述PRACH的索引与所述定时导频信号满足一对多的关系；所述PRACH的RA-RNTI与所述定时导频信号满足一对多的关系。
在一实施例中，每个定时导频信号对应的PDCCH不同，每个PDCCH指示的RAR消息不同；或者，每个定时导频信号对应的PDCCH不同，每个PDCCH指示的RAR消息相同；或者，每个定时导频信号对应的PDCCH相同，每个PDCCH指示的RAR消息相同。
在一实施例中，还包括：更新模块，设置为根据所述最佳导频索引更新每个定时导频信号的预编码信息、定时信息以及发送定时导频信号的AP集合。
在一实施例中，导频发送模块410，包括：导频信号发送单元，设置为根据所述PRACH确定用于响应所述PRACH的定时导频信号，并在预设的时间窗内发送所述用于响应所述PRACH的导频信号。
在一实施例中，所述定时导频信号为至少一个；每个导频信号占用K个CCE，K为大于1的整数。
在一实施例中，K为PDCCH的聚合等级集合中的一个元素；或者，K根据PDCCH的聚合等级确定。
在一实施例中，每个定时导频信号所占用的CCE与对应的PDCCH所占用的CCE属于相同的CCE候选集合；每个定时导频信号所占用的CCE在所述CCE候选集合中的位置索引，与对应的PDCCH所占用的CCE在所述CCE候选集合中的位置索引相同或者不同。
在一实施例中，还包括：系统消息发送模块，设置为发送系统消息，所述系统消息中包括以下至少之一：所述PRACH的索引与所述定时导频信号的关系；所述PRACH的RA-RNTI与所述定时导频信号的关系。
本实施例提出的接入控制装置与上述实施例提出的接入控制方法属于同一构思，未在本实施例中详尽描述的技术细节可参见上述任意实施例，并且本实施例具备与执行随机接入方法相同的效果。
本申请实施例还提供了一种终端，图9为一实施例提供的一种终端的硬件结构示意图，如图9所示，本申请提供的终端，包括存储器52、处理器51以及存储在存储器上并可在处理器上运行的计算机程序，处理器51执行所述程序时 实现上述的随机接入方法。
终端还可以包括存储器52；该终端中的处理器51可以是一个或多个，图9中以一个处理器51为例；存储器52用于存储一个或多个程序；所述一个或多个程序被所述一个或多个处理器51执行，使得所述一个或多个处理器51实现如本申请实施例中所述的随机接入方法。
终端还包括：通信装置53、输入装置54和输出装置55。
终端中的处理器51、存储器52、通信装置53、输入装置54和输出装置55可以通过总线或其他方式连接，图9中以通过总线连接为例。
输入装置54可用于接收输入的数字或字符信息，以及产生与终端的用户设置以及功能控制有关的按键信号输入。输出装置55可包括显示屏等显示设备。
通信装置53可以包括接收器和发送器。通信装置53设置为根据处理器51的控制进行信息收发通信。
存储器52作为一种计算机可读存储介质，可设置为存储软件程序、计算机可执行程序以及模块，如本申请实施例所述随机接入方法对应的程序指令/模块(例如，随机接入装置中的信道发送模块310、导频接收模块320和第三消息发送模块330)。存储器52可包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序；存储数据区可存储根据终端的使用所创建的数据等。此外，存储器52可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。在一些实例中，存储器52可进一步包括相对于处理器51远程设置的存储器，这些远程存储器可以通过网络连接至终端。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
本申请实施例还提供了一种接入点，图10为一实施例提供的一种接入点的硬件结构示意图，如图10所示，本申请提供的接入点，包括存储器62、处理器61以及存储在存储器上并可在处理器上运行的计算机程序，处理器61执行所述程序时实现上述的接入控制方法。
接入点还可以包括存储器62；该接入点中的处理器61可以是一个或多个，图10中以一个处理器61为例；存储器62用于存储一个或多个程序；所述一个或多个程序被所述一个或多个处理器61执行，使得所述一个或多个处理器61实现如本申请实施例中所述的接入控制方法。
接入点还包括：通信装置63、输入装置64和输出装置65。
接入点中的处理器61、存储器62、通信装置63、输入装置64和输出装置65可以通过总线或其他方式连接，图10中以通过总线连接为例。
输入装置64可用于接收输入的数字或字符信息，以及产生与接入点的用户设置以及功能控制有关的按键信号输入。输出装置65可包括显示屏等显示设备。
通信装置63可以包括接收器和发送器。通信装置63设置为根据处理器61的控制进行信息收发通信。
存储器62作为一种计算机可读存储介质，可设置为存储软件程序、计算机可执行程序以及模块，如本申请实施例所述接入控制方法对应的程序指令/模块(例如，接入控制装置中的导频发送模块410和第四消息发送模块420)。存储器62可包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序；存储数据区可存储根据接入点的使用所创建的数据等。此外，存储器62可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。在一些实例中，存储器62可进一步包括相对于处理器61远程设置的存储器，这些远程存储器可以通过网络连接至接入点。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
本申请实施例还提供一种存储介质，所述存储介质存储有计算机程序，所述计算机程序被处理器执行时实现本申请实施例中任一所述的随机接入方法或接入控制方法。
该随机接入方法，包括：发送PRACH；接收用于响应所述PRACH的定时导频信号，并检测RAR消息以及用于指示所述RAR消息的PDCCH，所述RAR消息以及所述PDCCH的定时基于所述定时导频信号的定时确定；根据所述定时导频信号、所述RAR消息以及所述PDCCH发送第三消息，所述第三消息用于请求接入网络。
该接入控制方法，包括：在接收到PRACH的情况下，发送用于响应所述PRACH的定时导频信号、RAR消息以及用于指示所述RAR消息的PDCCH，所述RAR消息以及所述PDCCH的定时基于所述定时导频信号的定时确定；在检测到第三消息的情况下，发送第四消息，所述第四消息用于通知终端已接入网络。
本申请实施例的计算机存储介质，可以采用一个或多个计算机可读的介质的任意组合。计算机可读介质可以是计算机可读信号介质或者计算机可读存储介质。计算机可读存储介质例如可以是，但不限于：电、磁、光、电磁、红外 线、或半导体的系统、装置或器件，或者任意以上的组合。计算机可读存储介质的例子(非穷举的列表)包括：具有一个或多个导线的电连接、便携式计算机磁盘、硬盘、随机存取存储器(Random Access Memory，RAM)、只读存储器(Read Only Memory，ROM)、可擦式可编程只读存储器(Erasable Programmable Read Only Memory，EPROM)、闪存、光纤、便携式CD-ROM、光存储器件、磁存储器件、或者上述的任意合适的组合。计算机可读存储介质可以是任何包含或存储程序的有形介质，该程序可以被指令执行系统、装置或者器件使用或者与其结合使用。
计算机可读的信号介质可以包括在基带中或者作为载波一部分传播的数据信号，其中承载了计算机可读的程序代码。这种传播的数据信号可以采用多种形式，包括但不限于：电磁信号、光信号或上述的任意合适的组合。计算机可读的信号介质还可以是计算机可读存储介质以外的任何计算机可读介质，该计算机可读介质可以发送、传播或者传输用于由指令执行系统、装置或者器件使用或者与其结合使用的程序。
计算机可读介质上包含的程序代码可以用任何适当的介质传输，包括但不限于：无线、电线、光缆、无线电频率(Radio Frequency，RF)等等，或者上述的任意合适的组合。
可以以一种或多种程序设计语言或其组合来编写用于执行本申请操作的计算机程序代码，所述程序设计语言包括面向对象的程序设计语言，诸如Java、Smalltalk、C++，还包括常规的过程式程序设计语言，诸如“C”语言或类似的程序设计语言。程序代码可以完全地在用户计算机上执行、部分地在用户计算机上执行、作为一个独立的软件包执行、部分在用户计算机上部分在远程计算机上执行、或者完全在远程计算机或服务器上执行。在涉及远程计算机的情形中，远程计算机可以通过任意种类的网络，包括局域网(Local Area Network，LAN)或广域网(Wide Area Network，WAN)，连接到用户计算机，或者，可以连接到外部计算机(例如利用因特网服务提供商来通过因特网连接)。
以上所述，仅为本申请的示例性实施例而已。
本领域内的技术人员应明白，术语用户终端涵盖任何适合类型的无线用户设备，例如移动电话、便携数据处理装置、便携网络浏览器或车载移动台。
一般来说，本申请的多种实施例可以在硬件或专用电路、软件、逻辑或其任何组合中实现。例如，一些方面可以被实现在硬件中，而其它方面可以被实现在可以被控制器、微处理器或其它计算装置执行的固件或软件中，尽管本申 请不限于此。
本申请的实施例可以通过移动装置的数据处理器执行计算机程序指令来实现，例如在处理器实体中，或者通过硬件，或者通过软件和硬件的组合。计算机程序指令可以是汇编指令、指令集架构(Instruction Set Architecture，ISA)指令、机器指令、机器相关指令、微代码、固件指令、状态设置数据、或者以一种或多种编程语言的任意组合编写的源代码或目标代码。
本申请附图中的任何逻辑流程的框图可以表示程序步骤，或者可以表示相互连接的逻辑电路、模块和功能，或者可以表示程序步骤与逻辑电路、模块和功能的组合。计算机程序可以存储在存储器上。存储器可以具有任何适合于本地技术环境的类型并且可以使用任何适合的数据存储技术实现，例如但不限于只读存储器(Read-Only Memory，ROM)、随机访问存储器(Random Access Memory，RAM)、光存储器装置和系统(数码多功能光碟(Digital Video Disc，DVD)或光盘(Compact Disk，CD)等。计算机可读介质可以包括非瞬时性存储介质。数据处理器可以是任何适合于本地技术环境的类型，例如但不限于通用计算机、专用计算机、微处理器、数字信号处理器(Digital Signal Processing，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、可编程逻辑器件(Field-Programmable Gate Array，FPGA)以及基于多核处理器架构的处理器。

Claims (23)

  1. 一种随机接入方法，应用于终端，包括：
    发送物理随机接入信道PRACH；
    接收用于响应所述PRACH的定时导频信号，并检测随机接入响应RAR消息以及用于指示所述RAR消息的物理下行控制信道PDCCH，所述RAR消息以及所述PDCCH的定时基于所述定时导频信号的定时确定；
    根据所述定时导频信号、所述RAR消息以及所述PDCCH发送第三消息，所述第三消息用于请求接入网络。
  2. 根据权利要求1所述的方法，其中，所述定时导频信号满足以下至少之一：
    所述PRACH的索引与所述定时导频信号满足一对一的关系；
    所述PRACH的随机接入-无线网络临时标识RA-RNTI与所述定时导频信号满足一对一的关系。
  3. 根据权利要求1所述的方法，其中，所述第三消息中包含测量得到的最佳定时导频信号的索引；
    所述定时导频信号满足以下至少之一：
    所述PRACH的索引与所述定时导频信号满足一对多的关系；
    所述PRACH的RA-RNTI与所述定时导频信号满足一对多的关系。
  4. 根据权利要求3所述的方法，其中，
    不同定时导频信号对应的PDCCH不同，不同PDCCH指示的RAR消息不同；或者，
    不同定时导频信号对应的PDCCH不同，不同PDCCH指示的RAR消息相同；或者，
    不同定时导频信号对应的PDCCH相同，不同PDCCH指示的RAR消息相同。
  5. 根据权利要求1所述的方法，其中，所述接收用于响应所述PRACH的定时导频信号，并检测RAR消息以及用于指示所述RAR消息的PDCCH，包括：
    在预设时间窗内接收到所述定时导频信号的情况下，检测所述RAR消息和所述PDCCH；
    所述方法还包括：
    在预设时间窗内未接收到所述定时导频信号的情况下，不检测所述RAR消 息和所述PDCCH。
  6. 根据权利要求1所述的方法，其中，所述定时导频信号的数量为至少一个；
    每个定时导频信号占用K个控制信道元CCE，K为大于1的整数。
  7. 根据权利要求6所述的方法，其中，K为PDCCH的聚合等级集合中的一个元素；或者，K根据PDCCH的聚合等级确定。
  8. 根据权利要求6所述的方法，其中，每个定时导频信号所占用的CCE与所述每个定时导频信号对应的PDCCH所占用的CCE属于相同的CCE候选集合；
    每个定时导频信号所占用的CCE在所述CCE候选集合中的位置索引，与所述每个定时导频信号对应的PDCCH所占用的CCE在所述CCE候选集合中的位置索引相同或者不同。
  9. 根据权利要求1所述的方法，还包括：接收系统消息，所述系统消息中包括以下至少之一：
    所述PRACH的索引与所述定时导频信号的关系；
    所述PRACH的RA-RNTI与所述定时导频信号的关系。
  10. 一种接入控制方法，应用于接入点，包括：
    在接收到物理随机接入信道PRACH的情况下，发送用于响应所述PRACH的定时导频信号、随机接入响应RAR消息以及用于指示所述RAR消息的物理下行控制信道PDCCH，所述RAR消息以及所述PDCCH的定时基于所述定时导频信号的定时确定；
    在检测到第三消息的情况下，发送第四消息，所述第四消息用于通知终端已接入网络。
  11. 根据权利要求10所述的方法，其中，所述发送用于响应所述PRACH的定时导频信号、RAR消息以及用于指示所述RAR消息的PDCCH，包括：
    根据控制节点的指令，或者根据响应所述PRACH的接入点的协商结果，发送所述定时导频信号、所述RAR消息以及所述PDCCH。
  12. 根据权利要求10所述的方法，其中，所述定时导频信号满足以下至少之一：
    所述PRACH的索引与所述定时导频信号满足一对一的关系；
    所述PRACH的随机接入-无线网络临时标识RA-RNTI与所述定时导频信号满足一对一的关系。
  13. 根据权利要求10所述的方法，其中，所述第三消息中包含测量得到的最佳定时导频信号的索引；
    所述定时导频信号满足以下至少之一：
    所述PRACH的索引与所述定时导频信号满足一对多的关系；
    所述PRACH的RA-RNTI与所述定时导频信号满足一对多的关系。
  14. 根据权利要求13所述的方法，其中，
    不同定时导频信号对应的PDCCH不同，不同PDCCH指示的RAR消息不同；或者，
    不同定时导频信号对应的PDCCH不同，不同PDCCH指示的RAR消息相同；或者，
    不同定时导频信号对应的PDCCH相同，不同PDCCH指示的RAR消息相同。
  15. 根据权利要求13所述的方法，还包括：
    根据所述最佳导频索引更新每个定时导频信号的预编码信息、定时信息以及发送定时导频信号的接入点集合。
  16. 根据权利要求10所述的方法，其中，所述发送用于响应所述PRACH的定时导频信号，包括：
    根据所述PRACH确定用于响应所述PRACH的定时导频信号，并在预设的时间窗内发送所述用于响应所述PRACH的导频信号。
  17. 根据权利要求10所述的方法，其中，所述定时导频信号的数量为至少一个；
    每个导频信号占用K个控制信道元CCE，K为大于1的整数。
  18. 根据权利要求17所述的方法，其中，K为PDCCH的聚合等级集合中的一个元素；或者，K根据PDCCH的聚合等级确定。
  19. 根据权利要求17所述的方法，其中，每个定时导频信号所占用的CCE与所述每个定时导频信号对应的PDCCH所占用的CCE属于相同的CCE候选集合；
    每个定时导频信号所占用的CCE在所述CCE候选集合中的位置索引，与所述每个定时导频信号对应的PDCCH所占用的CCE在所述CCE候选集合中的位置索引相同或者不同。
  20. 根据权利要求10所述的方法，还包括：发送系统消息，所述系统消息 中包括以下至少之一：
    所述PRACH的索引与所述定时导频信号的关系；
    所述PRACH的RA-RNTI与所述定时导频信号的关系。
  21. 一种终端，包括存储器、处理器以及存储在所述存储器上并可在所述处理器上运行的计算机程序，其中，所述处理器执行所述程序时实现如权利要求1-9中任一项所述的随机接入方法。
  22. 一种接入点，包括存储器、处理器以及存储在所述存储器上并可在所述处理器上运行的计算机程序，其中，所述处理器执行所述程序时实现如权利要求10-20中任一项所述的接入控制方法。
  23. 一种计算机可读存储介质，存储有计算机程序，其中，所述程序被处理器执行时实现如权利要求1-9中任一项所述的随机接入方法或如权利要求10-20中任一项所述的接入控制方法。
PCT/CN2021/123418 2021-01-05 2021-10-13 随机接入方法、接入控制方法、终端、接入点及存储介质 WO2022148081A1 (zh)

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