WO2018059399A1 - Procédé, dispositif, et système d'accès aléatoire, terminal, et station de base - Google Patents

Procédé, dispositif, et système d'accès aléatoire, terminal, et station de base Download PDF

Info

Publication number
WO2018059399A1
WO2018059399A1 PCT/CN2017/103483 CN2017103483W WO2018059399A1 WO 2018059399 A1 WO2018059399 A1 WO 2018059399A1 CN 2017103483 W CN2017103483 W CN 2017103483W WO 2018059399 A1 WO2018059399 A1 WO 2018059399A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal device
access
base station
resources
signal
Prior art date
Application number
PCT/CN2017/103483
Other languages
English (en)
Chinese (zh)
Inventor
刘鹍鹏
李雪茹
曲秉玉
Original Assignee
华为技术有限公司
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
Priority claimed from CN201710082216.0A external-priority patent/CN108307413B/zh
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to BR112019006472A priority Critical patent/BR112019006472A2/pt
Priority to KR1020197012624A priority patent/KR102283448B1/ko
Priority to EP17854849.1A priority patent/EP3515147B1/fr
Publication of WO2018059399A1 publication Critical patent/WO2018059399A1/fr
Priority to US16/370,430 priority patent/US10966255B2/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • the present invention relates to the field of communications, and in particular, to an access method, a terminal device, and a base station.
  • a terminal device In a wireless communication system, a terminal device needs to establish a connection with a network side device, and this process is generally referred to as a random access process.
  • a random access process In a Long Term Evolution (LTE) system, after the radio link is interrupted, the terminal device needs to re-establish the connection by using contention-based random access.
  • LTE Long Term Evolution
  • Contention-based random access consists of the following four steps:
  • Step 1 Transfer the preamble sequence
  • the user equipment randomly selects one of the high-level parameter random access sequence sets, and sends a random access preamble (RACH Preamble) on the random access resource specified by the base station.
  • RACH Preamble random access preamble
  • Step 2 Random access response
  • the UE receives a random access response (RAR) sent from the base station on the physical downlink shared channel (PDSCH), and the UE determines the random according to whether the response corresponding to the self-transmitted preamble sequence is received. Successful access.
  • RAR random access response
  • Step 3 Layer 2/Layer 3 messaging
  • the temporary C-RNTI included in the RAR received by the UE transmits a random access procedure message to the base station on the physical uplink shared channel (PUSCH) specified in the RAR, including the identifier of the UE in the local cell. For competitive resolution.
  • PUSCH physical uplink shared channel
  • the UE accepts the contention resolution message sent by the base station. If the contention of the UE is included in the contention resolution message, the contention is successful, and the random access process is completed. If the identity of the UE is not included in the contention resolution message, the contention fails. Need to re-initiate random access.
  • the embodiment of the invention provides an access method, a terminal device and a base station, which can shorten the access delay.
  • an access method comprising:
  • the terminal device determines, at the current moment, a preset condition that satisfies the link abnormality, and determines that the current time is located in a pre-configured time window;
  • the terminal device selects one access resource from the pre-configured at least two access resources as the target access resource, where the at least two access resources are valid for the terminal device in the time window, where the at least two Each of the two access resources includes a time-frequency resource and a sequence corresponding to the time-frequency resource, and the radio resource control RRC context information of the terminal device is saved in the base station in the time window;
  • the terminal device sends an access signal to the base station by using a time-frequency resource in the target access resource, where the access signal is determined according to a sequence in the target access resource.
  • the access device and the time window are pre-configured for the terminal device, and the base station saves the RRC context information of the terminal device in the time window.
  • the terminal device can use the access resource to send and receive in the time window.
  • the base station can recover the RRC context of the terminal device and perform normal communication according to the access signal. Since the terminal device does not need to re-request the RRC resource, the access delay of the terminal device is shortened.
  • the time domain resource in the at least two access resources includes at least two time domain resources in the time window.
  • the preset condition of the link abnormality is that the terminal device finds uplink out-of-synchronization, or downlink out-of-synchronization, or radio link connection fails RLF, or the terminal device sends a scheduling request.
  • the response signal is not received within the subsequent preset time period, or the terminal device determines that the energy of the at least one pilot signal is lower than the first preset threshold.
  • the preset condition of the link abnormality is that the energy of the at least one first pilot signal is lower than the first preset threshold, and the energy of the at least one second pilot signal is higher than the second Preset threshold,
  • the at least one first pilot signal corresponds to at least one first beam for data transmission
  • the at least one second pilot signal corresponds to the at least one of the plurality of beams for beam measurement At least one second beam other than a beam; or,
  • the at least one first pilot signal corresponds to at least one first beam for channel measurement, the at least one second pilot signal corresponding to the at least one first beam of the plurality of beams for beam measurement At least one second beam other than; or,
  • the at least one first pilot signal corresponds to at least one first beam configured by the base station for the terminal device
  • the at least one second pilot signal corresponds to multiple beams configured by the base station for the cell where the terminal device is located At least one second beam other than the at least one first beam
  • the at least one first pilot signal corresponds to at least one first beam configured by the base station for the terminal device
  • the at least one second pilot signal corresponds to at least one configured by the base station for the terminal device Second beam.
  • the pilot signal is a beam measurement reference pilot signal or a demodulation pilot signal.
  • the at least two access resources have a corresponding relationship with the transmitting and/or receiving beams of the terminal device
  • the at least two access resources have a corresponding relationship with the transmitting and/or receiving beams of the base station.
  • the access signal carries indication information, where the indication information is used to indicate a sending and/or receiving beam of the terminal device recommended by the terminal device,
  • the indication information is used to indicate a sending and/or receiving beam of the base station recommended by the terminal device.
  • the base station can adopt the transmitting and/or receiving beam of the terminal device recommended by the terminal device, or the base The transmitting and/or receiving beam beams of the station transmit and/or receive signals.
  • the at least two access resources have a corresponding relationship with the transmitting and/or receiving beams of the terminal device, where the indication information is recommended by the terminal device Sending and/or receiving indication information of the access resource corresponding to the beam,
  • the at least two access resources have a corresponding relationship with the transmitting and/or receiving beams of the base station, where the indication information is a connection corresponding to the sending and/or receiving beams of the base station recommended by the terminal device. Instructions for entering resources.
  • the method further includes:
  • the terminal device receives an access response signal sent by the base station according to the access signal, where the access response signal carries data scheduled by the base station.
  • the access signal carries information for indicating a transmit and/or receive beam of the base station recommended by the terminal device, where the access response signal is further carried to indicate the The information of the transmitting and/or receiving beams of the terminal device recommended by the base station.
  • the access signal carries a beam measurement request
  • the method further includes:
  • an access response signal sent by the base station according to the access signal where the access response signal carries configuration information of a reference signal used for performing beam measurement, where the configuration information is that the base station according to the The beam measurement request is determined.
  • the access response signal further carries information used to indicate an uplink timing advance.
  • the method before the terminal device selects one resource from the pre-configured at least two resources as the target resource, the method further includes:
  • the terminal device receives the resource configuration information sent by the base station in an RRC connection state, where the resource configuration information is used to indicate the at least two access resources and/or the time window.
  • the resource configuration information is carried in a terminal device-specific dynamic signaling, RRC signaling, medium access control MAC signaling, uplink scheduling signaling, downlink scheduling signaling, or dedicated to a configuration office. In the signaling of the access signal.
  • the set of time-frequency resources in the at least two access resources is a subset of a set of time-frequency resources based on contention-based random access, and the at least two accesses The sequence in the resource is different from the sequence of the contention based random access.
  • a length of each of the at least two access resources is smaller than a length of the contention-based random access sequence.
  • the subcarrier spacing in the at least two access resources is greater than the subcarrier spacing in the contention based random access.
  • the access signal is a random access signal
  • the sequence is a preamble sequence
  • time-frequency resource in the time-frequency resource set of the contention-based random access, it is not necessary to separately configure a new time-frequency resource, which can save time-frequency resources and improve the utilization of time-frequency resources.
  • the length of the time window is related to the number of link anomalies.
  • the more times the link is abnormal the longer the length of the time window.
  • an access method comprising:
  • the base station generates resource configuration information of the terminal device, where the resource configuration information is used to indicate at least two access resources and a time window, the at least two access resources being valid for the terminal device in the time window, each of the at least two access resources comprising a time-frequency resource and the time-frequency a sequence corresponding to the resource, where the base station saves radio resource control RRC context information of the terminal device in the time window;
  • the base station When the terminal device is in an RRC connected state, the base station sends the resource configuration information to the terminal device.
  • the access device and the time window are pre-configured for the terminal device, and the base station saves the RRC context information of the terminal device in the time window.
  • the terminal device can use the access resource to send and receive in the time window.
  • the base station can recover the RRC context of the terminal device and perform normal communication according to the access signal. Since the terminal device does not need to re-request the RRC resource, the access delay of the terminal device is shortened.
  • the base station sends the resource configuration information to the terminal device periodically or aperiodically.
  • the time domain resource in the at least two access resources includes at least two time domain resources in the time window.
  • the at least two access resources have a corresponding relationship with the transmitting and/or receiving beams of the terminal device
  • the at least two access resources have a corresponding relationship with the transmitting and/or receiving beams of the base station.
  • the method further includes:
  • the base station detects, by using the at least two access resources, the access signal sent by the terminal device in the time window.
  • the method further includes:
  • the base station acquires indication information according to the access signal, where the indication information is used to indicate a sending and/or receiving beam of the terminal device recommended by the terminal device,
  • the indication information is used to indicate a sending and/or receiving beam of the base station recommended by the terminal device.
  • the at least two access resources have a corresponding relationship with the transmitting and/or receiving beams of the terminal device, where the indication information is recommended by the terminal device Sending and/or receiving indication information of the access resource corresponding to the beam,
  • the at least two access resources have a corresponding relationship with the transmitting and/or receiving beams of the base station, where the indication information is a connection corresponding to the sending and/or receiving beams of the base station recommended by the terminal device. Instructions for entering resources.
  • the method further includes:
  • the base station sends an access response signal to the terminal device, where the access response signal carries data scheduled by the base station.
  • the indication information is used to indicate information about a transmit and/or receive beam of the base station recommended by the terminal device, where the access response signal is further carried to indicate that the base station recommends The information of the transmitting and/or receiving beams of the terminal device.
  • the method further includes:
  • the base station acquires a beam measurement request according to the access signal
  • the base station sends an access response signal to the terminal device, where the access response signal carries the configuration information.
  • the base station detects the access signal at a first moment, and at a second time
  • the terminal device sends the access response signal, and no data transmission occurs between the base station and the terminal device in an interval period between the first time and the second time.
  • the access response signal further carries information used to indicate an uplink timing advance.
  • the resource configuration information is carried in a terminal device-specific dynamic signaling, RRC signaling, medium access control MAC signaling, uplink scheduling signaling, downlink scheduling signaling, or dedicated to a configuration office. In the signaling of the access signal.
  • the set of time-frequency resources in the at least two access resources is a subset of a set of time-frequency resources based on contention-based random access, and the at least two accesses The sequence in the resource is different from the sequence of the contention based random access.
  • a length of each of the at least two access resources is smaller than a length of the contention-based random access sequence.
  • the subcarrier spacing in the at least two access resources is greater than the subcarrier spacing in the contention based random access.
  • the access signal is a random access signal
  • the sequence is a preamble sequence
  • the length of the time window is related to the number of link anomalies.
  • the more times the link is abnormal the longer the length of the time window.
  • an embodiment of the present invention provides a communication device, which has a function of implementing behavior of a terminal device in the foregoing method embodiment.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the communication device includes a processor and a transmitter, and the processor is configured to select one access resource from the pre-configured at least two access resources as a target access resource, where the transmitter is used by And acquiring an access signal by using a time-frequency resource in the target access resource.
  • the embodiment of the present invention provides another communication device, which has the function of implementing the behavior of the base station in the foregoing method embodiment.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the communication device includes a processor and a transmitter for generating resource configuration information, and the transmitter is configured to transmit processor-generated resource configuration information.
  • a fifth aspect a computer readable storage medium storing a program, the program causing a terminal device to perform the method of any of the first aspect or the first aspect of the first aspect .
  • a sixth aspect a computer readable storage medium storing a program for causing a base station to perform the method of any one of the second aspect or the second aspect of the second aspect.
  • the embodiment of the present invention provides a communication system, where the system includes the base station and the terminal device in the foregoing aspect; or the system includes the base station and the network entity in the foregoing aspect; or the system includes the foregoing aspects.
  • the base station, terminal device and network entity are included in the foregoing aspect.
  • the terminal device measures the reference signal in the pilot set to determine a preset condition that satisfies the link abnormality.
  • the pilot set includes a first pilot signal set and a second pilot signal set, the first pilot signal set includes X0 first pilot signals, and the second pilot signal set includes Y0 second pilots.
  • the X0 reference signals of the first pilot set are transmitted through the corresponding X0 beams, and the Y0 reference signals of the second pilot set are transmitted through the corresponding Y0 beams.
  • the first condition may be that the terminal device discovers the received signal of the pilot signals of the X beams by measuring X0 beams of the X0 first pilot signals in the first pilot set.
  • RSRP received signaling reception quality
  • RSS received signaling reception quality
  • the second condition may be that the terminal device measures Y0 of the Y0 second pilot signals in the second pilot set by measuring The beam is found to have a received energy RSRP or RSRQ of the pilot signal in which there are Y beams below a predefined threshold.
  • the terminal device considers that the preset condition of the link abnormality is met, and initiates a beam recovery process to the base station.
  • the terminal device sends indication information, where the indication information includes identifiers of the Y second pilot signals in the second pilot signal set.
  • the beams corresponding to the Y second pilot signals may be used by the base station to subsequently transmit data or control channels, and replace the X beams whose current RSRP/RSRQ is smaller than the threshold.
  • the terminal device can also rely on other indicators of the beam of the pilot signal to determine whether it is less than a predefined threshold.
  • X is a positive integer less than X0
  • the value of X is configurable.
  • the base station before the terminal device measures the first pilot signal and the second pilot signal, the base station sends configuration information for configuring the value of X.
  • the configuration information may be carried in the high layer signaling, or carried in a mutli-access control element (MAC CE), or carried in dynamic signaling (such as downlink control information, DCI).
  • MAC CE mutli-access control element
  • DCI downlink control information
  • the channel of the terminal device and the base station is mainly composed of multiple cluster paths, the communication between the base station and the terminal device may depend on multiple main beams.
  • the RSRP or RSRQ of a part of the beam is lower than the threshold, communication failure of the control channel or the data channel may be caused.
  • the first pilot signal may be a channel measurement reference signal CSI-RS, a synchronization signal (SS). If the terminal device performs beam quality detection on the control channel, determines whether the preset condition of the link abnormality is met, and determines whether to initiate beam recovery, the CSI-RS and the synchronization signal included in the first pilot signal are controlled by the terminal device.
  • the demodulation pilot reference signal DMRS of the channel has a quasi co-location (QCL) associated pilot signal.
  • the base station transmits the control channel of the terminal device through the beam 1 and the beam 2, and transmits the first pilot signal such as CSI-RS through the beam 1 and the beam 2, and the CSI-RS of the beam 1 and the control channel transmitted on the beam 1 have For QCL association, the CSI-RS of Beam 2 has a QCL association with the control channel transmitted on Beam 2.
  • the first pilot signal may be a DMRS of a control channel of the terminal device.
  • the terminal device measures a plurality of beams (beams carrying the first pilot signals) transmitting the control channel, and detects the control channel.
  • the DCI carried by the control channel is determined to determine the second pilot signal that the base station needs to measure or the beam that carries the second pilot signal.
  • control channel of the terminal device may be a control channel in a user-specific search space.
  • control channel of the terminal device may be a control channel in a common search space.
  • the first pilot signal may be a channel measurement reference signal CSI-RS, a synchronization signal. If the terminal device is Performing beam quality detection on the data channel, determining whether the preset condition of the link abnormality is met, and determining whether to initiate beam recovery, the CSI-RS and the synchronization signal included in the first pilot signal are the DMRS of the data channel of the terminal device.
  • the pilot signal associated with the QCL For example, the base station transmits the data channel of the terminal device through beam 1, and transmits the first pilot signal such as CSI-RS through beam 1, and the CSI-RS of beam 1 has a QCL association with the data channel transmitted on beam 1.
  • the first pilot set used for measurement may be configured by the base station by using signaling, such as high layer signaling, MAC CE or DCI.
  • the first pilot signal may be a DMRS of a data channel of the terminal device.
  • the terminal device first measures the control channel. After the terminal device correctly detects the control channel, it acquires information such as the newly arrived time-frequency resource location and the beam information of the transmitted data (the beam carrying the first pilot signal according to the DCI. At this time, the terminal device can measure the first pilot. Signal to determine the corresponding beam quality.
  • the second pilot signal included in the second pilot set may be a CSI-RS, a synchronization signal or a DMRS of a terminal device data channel, or a DMRS of a terminal device control channel.
  • the second pilot signal and the first pilot signal may be different types of pilot signals, for example, the first pilot signal is a CSI-RS, and the second pilot signal is a synchronization signal.
  • the second pilot signal and the first pilot signal may be the same type of pilot signal.
  • the second pilot set is a set of pilot signals in the total pilot set configured by the base station for the terminal device except for the pilot signal associated with the first pilot signal set.
  • the pilots in the total pilot set configured by the base station for the terminal device are all CSI-RSs, and are respectively transmitted by the beam 1, the beam 2 to the beam 10, respectively corresponding to the CSI-RS1 to the CSI-RS10, where the first pilot set The first pilot in the second pilot is transmitted through the beam 1 and the beam 2.
  • the second pilot in the second pilot set is CSI-RS3 to CSI-RS10, and is transmitted through the beam 3 to the beam 10. That is, the second set of pilots is a complement of the first set of pilot signals.
  • the pilots in the total pilot set include CSI-RS 1, CSI-RS 2, CSI-RS3, and CSI-RS 4, as well as SS 1, SS 2, SS 3, and SS 4.
  • the beam transmitting the SS 1 is a wider beam, which includes the narrower beam and CSI-transmitting the CSI-RS1.
  • the narrower beam of RS 2, that is, the beam transmitting SS 1 is similar to the beam direction of transmitting CSI-RS1 and CSI-RS 2.
  • the second pilot set includes SS 2, SS 3, and SS 4.
  • the second pilot set By configuring the second pilot set to be a set of pilot signals other than the pilot signals that are associated with the first pilot signal set in the total pilot set configured by the base station for the terminal device, the first pilot can be made to correspond.
  • the beam corresponding to the second pilot is also occluded, which improves the monitoring efficiency of the terminal device, and does not need to monitor the known occluded beam.
  • the second pilot set is a set configured by the base station for the terminal device.
  • the monitoring complexity of the terminal device can be reduced.
  • the base station configures the second pilot set by a priori information to reduce the size of the set and reduce unnecessary power consumption of the terminal device.
  • the X first pilot signals in the first pilot signal set satisfy the first condition
  • the X first pilot signals satisfying the first condition may be: the RSRP or the RSRQ of the X CSI-RSs are smaller than a first threshold, wherein the X CSI-RSs are QCL associated with the DMRS of the control channel of the terminal device.
  • CSI-RS or,
  • the X first pilot signals satisfying the first condition may be: the RSRP or the RSRQ of the X SSs are smaller than the first threshold, where the SS is an SS having a QCL associated with the DMRS of the control channel of the terminal device, or
  • the X first pilot signals satisfy the first condition that the terminal device correctly detects the control channel, and the RSRP or RSRQ of the X DMRSs in the DMRS indicated by the DCI of the control channel is smaller than the first threshold.
  • the DMRS indicated by the DCI is a DMRS for terminal device monitoring indicated by a DCI in a correctly detected control channel.
  • the base station transmits the control channel through 4 beams, and the DMRS of each control channel is the first pilot signal.
  • the terminal device detects the control channel and acquires the DMRS on the four beams that need to be detected through the DCI.
  • the terminal device measures that the RSRP or RSRQ of the X DMRSs is smaller than the first threshold, or
  • the X first pilot signals satisfy the first condition that the RSRP or RSRQ of the X CSI-RSs is smaller than a first threshold, wherein the X CSI-RSs are QCL associated with the DMRS of the data channel of the terminal device.
  • CSI-RS or,
  • the X first pilot signals satisfying the first condition may be: X first conditions are RSRP or RSRQ of the SS is less than a first threshold, wherein the X SSs are QCL associated with the DMRS of the data channel of the terminal device. SS, or,
  • the X first pilot signals satisfy the first condition that the terminal device correctly detects the control channel, and the RSRP/RSRQ of the X DMRSs in the DMRS of the data channel is smaller than the first threshold.
  • the base station transmits a data channel through beam 1 and beam 2.
  • the preset conditions of the foregoing multiple possible link abnormalities which preset condition is specifically selected may be sent by the base station to the terminal device for configuration.
  • the configuration information may be carried in the high layer signaling, or in the MAC CE, or in the DCI.
  • FIG. 1 is a schematic flowchart of an access method according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of the principle according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a scenario according to an embodiment of the present invention.
  • 4A is a schematic diagram of a format of a sequence in a first type of access resource according to an embodiment of the present invention
  • 4B is a schematic diagram of a format of a sequence in a second type of access resource according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a correspondence relationship between an access resource and a beam according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of a format of a preamble sequence of random access
  • FIG. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a terminal device according to another embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a terminal device according to another embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a base station according to another embodiment of the present invention.
  • the technical solution of the present invention can be applied to various communication systems, such as: wireless wifi, Worldwide Interoperability for Microwave Access (WiMAX), Global System of Mobile communication (Global System of Mobile communication, GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution ( Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, Universal Mobile Telecommunication System (UMTS), and The 3rd Generation Partnership Project
  • WiMAX Worldwide Interoperability for Microwave Access
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • UMTS Universal Mobile Telecommunication System
  • the 3GPP 3rd Generation Partnership Project
  • Embodiments of the present invention can be used in wireless networks of different standards.
  • a wireless access network may include different network elements in different systems.
  • the network elements of the radio access network in Long Term Evolution (LTE) and LTE-A include an evolved base station (eNodeB, eNB), and a wireless access in Wideband Code Division Multiple Access (WCDMA).
  • the network elements of the network include a Radio Network Controller (RNC) and a NodeB.
  • RNC Radio Network Controller
  • WiMax Worldwide Interoperability for Microwave Access
  • the related modules in the base station system may be different, and the embodiments of the present invention are not limited. However, for convenience of description, the following embodiments will be described by taking a base station as an example.
  • the terminal device may also be referred to as a user equipment (User Equipment, UE), a mobile station (Mobile Station, MS), a mobile terminal (Mobile Terminal), etc., and the terminal may be connected via wireless.
  • the Radio Access Network (RAN) communicates with one or more core networks.
  • the terminal may be a mobile phone (or "cellular" phone), a computer with communication function, etc., for example, the terminal may also be portable. , pocket, handheld, computer built-in or in-vehicle mobile devices.
  • the term "and/or” is merely an association relationship describing an associated object, indicating that there may be three relationships.
  • a and/or B may indicate that A exists separately, and A and B exist simultaneously, and B cases exist alone.
  • the character "/" in this article generally indicates that the contextual object is an "or" relationship.
  • the terminal device may transmit and/or receive signals by using an omnidirectional beam, and may also transmit and/or receive signals by using a directional beam.
  • the base station can transmit and/or receive signals using omnidirectional beams, and can also transmit and/or receive signals using directional beams.
  • the sequence in the embodiment of the present invention can be used as a code domain resource.
  • FIG. 1 is a schematic flowchart of an access method 100 according to an embodiment of the present invention. As shown in FIG. 1, method 100 includes the following.
  • the base station generates resource configuration information of the terminal device, where the resource configuration information is used to indicate at least two access resources and/or a time window, and at least two access resources are valid for the terminal device in the time window, and at least two access resources are available.
  • Each of the access resources includes a sequence corresponding to the time-frequency resource and the time-frequency resource, and the base station stores the Radio Resource Control (RRC) context information of the terminal device in the time window.
  • RRC Radio Resource Control
  • the at least two access resources are only valid for the terminal device within the time window. Outside the time window, the at least two access resources may fail to the terminal device. For example, in the time window, for the end The sequence of the end device configuration is S1. Outside the time window, the sequence S1 will be possibly configured for other terminal devices, and the sequence will be invalidated for the terminal device.
  • the length of the time window may be predefined, or the length of the time window may also be related to the number of link anomalies. For example, the more times the link is abnormal, the longer the time window is.
  • the base station sends resource configuration information to the terminal device.
  • the base station may send resource configuration information to the terminal device periodically or non-periodically.
  • the base station After the base station sends the resource configuration information to the terminal device, it is detected on the at least two access resources whether the signal sent by the terminal device is received.
  • the base station is configured as a terminal device, and at least two access resources and/or time windows are used as an example for description, but the embodiment of the present invention is not limited thereto, and may also be pre- The defined manner, or other manner, pre-configures at least two access resources and/or time windows for the terminal device.
  • the at least two access resources may be some or all of the access resources pre-configured in the terminal device, and the time window may also be multiple times pre-configured in the terminal device. A time window in the window. This embodiment of the present invention is not limited thereto.
  • the terminal device After the terminal device receives the resource configuration information, if the terminal device determines that the link condition is met at the current time, and the current time is within the time window indicated by the resource configuration information, the terminal device obtains the resource configuration information from the resource. One of the at least two access resources indicated is selected as the target resource.
  • the terminal device may implicitly determine that the RRC context information of the terminal device will be saved by the base station in the time window.
  • the base station may pre-determine with the terminal device, within which the base station saves the RRC context information of the terminal device.
  • the time domain resource in the at least two access resources includes at least two time domain resources in the time window.
  • at least two access resources correspond to at least two moments in the time window.
  • the terminal device sends an access signal to the base station by using a time-frequency resource in the target access resource, where the access signal is determined according to a sequence in the target access resource.
  • the terminal device may re-access using the existing contention-based random access method.
  • the RRC link reestablishment and resource allocation are completed through a contention random access procedure, resulting in waste of resources and an increase in access delay.
  • the RRC context information of the terminal device is saved in the time window, so that the terminal device may be abnormal in the time window due to the occlusion of the communication beam, for example, the wireless link fails.
  • the base station can quickly identify the user by using the access signal, and the base station identifies the user through the detection of the pre-configured access signal and restores the RRC context corresponding to the user for normal communication.
  • the access resource and the time window are pre-configured for the terminal device, and the base station saves the RRC context information of the terminal device in the time window.
  • the terminal device may be in the time window.
  • the access resource is used to send an access signal, and the base station can recover the RRC context of the terminal device according to the access signal and perform normal communication. Since the terminal device does not need to re-request the RRC resource, the access delay of the terminal device is shortened.
  • the terminal device selects, from the at least two access resources, the shortest interval from the current time interval.
  • the access resource corresponding to the moment is used as the target access resource. This can further shorten the access delay of the terminal device.
  • the base station configures at least two access resources and/or time windows for the terminal device in the RRC connected state at time t0.
  • the length of the time window is from time t1 to time t5.
  • One access resource is corresponding to each of time t1, t2, t4, and t5 in the time window. If the terminal device finds a preset condition that meets the link abnormality at time t3, the terminal device uses the access resource corresponding to the time t4 as the target access resource, and uses the target access resource to send the access signal to the base station. It should be noted that, in the embodiment shown in FIG. 2, the terminal device may also use the access resource corresponding to the time t5 as the target access resource. This embodiment of the present invention does not limit this.
  • the base station may periodically or periodically transmit resource configuration information to the terminal device in the RRC connected state, and configure the access resource and/or the time window for the terminal device. As shown in FIG. 2, the base station may also send the resource configuration information again at time t6.
  • the length of the time window configured by the base station for the terminal device at different times may be different.
  • the base station may flexibly determine the length of the time window according to the link state.
  • the number of access resources that the base station configures for the terminal device within a time window at different times may also be different. This can further improve the flexibility of base station scheduling.
  • the preset condition of the link abnormality may be that the terminal device finds uplink out-of-synchronization, or downlink out-of-synchronization, or a radio link failure (RLF), or a preset of the terminal device after sending the scheduling request.
  • the response signal is not received within the time period, or the terminal device determines that the energy of the at least one pilot signal is lower than the first predetermined threshold.
  • the preset condition of the link abnormality is that the energy of the at least one first pilot signal is lower than the first preset threshold, and the energy of the at least one second pilot signal is higher than the second preset threshold.
  • the at least one first pilot signal corresponds to at least one first beam for data transmission
  • the at least one second pilot signal corresponds to at least one of the plurality of beams for beam measurement At least one second beam; or at least one first pilot signal corresponding to at least one first beam for channel measurement, the at least one second pilot signal corresponding to a plurality of beams for beam measurement At least one second beam other than the at least one first beam; or, the at least one first pilot signal corresponds to at least one first beam configured by the base station for the terminal device, and the at least one second pilot signal corresponds to the base station as the terminal device At least one second beam of the plurality of beams configured by the cell in addition to the at least one first beam; or the at least one first pilot signal corresponds to at least one first beam configured by the base station for the terminal device, at least one The two pilot signals correspond to at least one second beam configured by the base station for the terminal device.
  • the terminal device uses multiple directional beams to transmit and/or receive signals, if the terminal device finds that the energy of the pilot signals transmitted by the currently used beam 2 and beam 3 is lower than a preset threshold, that is, beam 2
  • the link with beam 3 is abnormal (such as the beam is blocked) and cannot communicate normally.
  • the terminal device finds that the energy of the pilot signal transmitted by using the beam 1, the beam 4, and the beam 5 is higher than the preset threshold, so that the link of the beam 1, the beam 4, and the beam 5 is normal, and the terminal device can be pre-configured.
  • the access resource sends an access signal to the base station.
  • the terminal device may select one beam (such as a beam with the best signal quality) from the beam 1, the beam 4, and the beam 5 to send an access signal for access. If the terminal device cannot determine the terminal beam with the best signal quality, the terminal device may also use the beam 1, the beam 4, and the beam 5 to respectively send the access signal for access.
  • one beam such as a beam with the best signal quality
  • beam 2 and beam 3 shown in FIG. 3 may correspond to at least one first beam of the above, and beam 1, beam 4 and beam 5 may correspond to at least one second beam of the above.
  • the terminal device may use the pre-configured resource to send an access signal on some or all of the other beams for access.
  • the terminal may also carry the indication information of the beam.
  • the terminal device may also determine the transmit and/or receive beam quality of the base station.
  • the indication information of the transmit and/or receive beams of the base station recommended by the terminal device may also be carried in the access signal. Notify the base station.
  • the access signal carries indication information, where the indication information is used to indicate a sending and/or receiving beam of the terminal device recommended by the terminal device, or the indication information is used to indicate that the terminal device recommends The transmitting and/or receiving beams of the base station.
  • the transmitting and/or receiving beam of the terminal device recommended by the terminal device, or the transmitting and/or receiving beam of the base station is a beam with a higher signal quality. In this way, the base station can transmit and/or receive signals using the beam recommended by the terminal device.
  • the terminal device may also carry a beam with poor signal quality in the access signal to indicate to the base station a beam with poor signal quality, which is not limited in this embodiment of the present invention.
  • the indication information may explicitly indicate the transmit and/or receive beams of the terminal device recommended by the terminal device.
  • the indication information may explicitly indicate the transmitting and/or receiving beams of the base station recommended by the terminal device.
  • the indication information may directly indicate the identity of the transmitting and/or receiving beam of the terminal device.
  • the indication information may directly indicate the identity of the transmitting and/or receiving beam of the base station.
  • the indication information may also implicitly indicate the transmit and/or receive beams of the terminal device.
  • the indication information may also implicitly indicate the transmit and/or receive beams of the base station.
  • the indication information may be indication information of the access resources (instant frequency resources and/or sequences) ( For example, the identifier of the time-frequency resource and/or the sequence, so that the base station can determine the transmit and/or receive beam of the corresponding terminal device according to the indication information of the time-frequency resource and/or sequence and the pre-configured correspondence.
  • the indication information may also be indication information of the access resource.
  • one access resource corresponds to a transmitting and/or receiving beam of multiple terminal devices, or multiple access resources correspond to a transmitting and/or receiving beam of one terminal device, or access resources and terminal devices
  • the transmit and/or receive beams are in one-to-one correspondence.
  • the correspondence between the access resources and the transmitting and/or receiving beams of the base station is similar, and details are not described herein again.
  • the pilot signal is a beam measurement reference pilot signal or a demodulation pilot signal.
  • the uplink and downlink transmissions have reciprocity, and the directional beam used by the base station and the directional beam used by the terminal device have a correspondence relationship.
  • the base station and the terminal device may also separately configure two access resources: a first type of access resource and a second type of access resource.
  • the first type of access resource corresponds to the base station or the terminal device adopts an omnidirectional beam transmission and/or reception signal
  • the second type of access resource corresponds to the base station or the terminal device uses the directional beam to transmit and/or receive signals. This enables the base station and the terminal device to flexibly adopt corresponding access resources according to requirements.
  • the format corresponding to the first type of access resources is as shown in FIG. 4A, and the corresponding sequence part is a long sequence.
  • the format corresponding to the second type of access resources is as shown in FIG. 4B, and the corresponding sequence part is a repetition of multiple short sequences.
  • the at least two access resources pre-configured for the terminal device may include the first type of access resources and/or the second type of access resources.
  • the terminal device can receive power according to the reference signal when transmitting and/or receiving signals by using the directional beam.
  • RSRP Reference Signal Receiving Power
  • the terminal device may select omnidirectional beam transmission.
  • the beam gain of the omnidirectional beam is smaller than that of the directional beam, since the RSRP is larger than a certain threshold, an omnidirectional beam can be used to achieve the coverage requirement.
  • the terminal device can adopt the first type of access resource, so that the base station can recognize that the terminal device is using omnidirectional beam transmission according to the access resource used by the terminal device.
  • the terminal device may use directional beam transmission to meet the coverage requirement. At this point, the terminal device needs to traverse multiple beams to determine the appropriate directional beam for transmitting the signal.
  • the terminal device can adopt the second type of access resource, so that the base station can recognize that the terminal device is transmitting by using the directional beam according to the access resource used by the terminal device.
  • the second type of access resource may have a corresponding relationship with the directional beam.
  • the terminal device may further determine which access resource of the second type of access resource is used for transmission according to the beam used by the downlink signal sent by the base station.
  • the downlink signal may be a downlink synchronization signal, an RBCH or a downlink pilot signal.
  • the first type of access resources pre-configured in the terminal device includes four access resources, and each access resource corresponds to a beam used by one downlink signal.
  • the terminal device when the terminal device adopts the omnidirectional beam, the terminal device transmits the signal by using the first type of access resource corresponding to the omnidirectional beam, regardless of which downlink signal is received. As shown in Figure 5.
  • the base station can determine whether to use the first type of access resource or the second type of access resource to send a signal according to requirements.
  • the method 100 may further include:
  • the base station After the base station detects the access signal sent by the terminal device, the base station sends an access response signal to the terminal device.
  • the terminal device sends the access signal at the first moment
  • the base station sends the access response signal at the second moment
  • the base station and the terminal device are not in the interval between the first moment and the second moment.
  • a data transfer has occurred.
  • the base station after detecting the access signal sent by the terminal device, the base station immediately sends an access response signal to the terminal device. This can further reduce the access delay of the terminal device.
  • the access response signal carries data scheduled by the base station.
  • the data scheduled by the base station may include data of the terminal device buffered by the base station. At this time, the base station can perform normal communication with the terminal device.
  • the access signal carries information indicating a transmitting and/or receiving beam of the base station recommended by the terminal device, the access response signal carrying data scheduled by the base station and transmitting and/or indicating the terminal device recommended by the base station Or receive beam information.
  • the terminal device may send the access signal on the transmitting and/or receiving beams of the configured multiple terminal devices.
  • the base station may perform beam measurement on the transmitting and/or receiving beams of the plurality of terminal devices to determine a transmitting and/or receiving beam of the terminal device with the best signal quality, and indicate the transmitting and/or receiving beam of the terminal device to the base station.
  • the access signal carries a beam measurement request
  • the access response signal carrying configuration information of a reference signal for performing beam measurement, the configuration information being determined by the base station based on the beam measurement request.
  • the terminal device finds that the currently used wave 2 and beam 3 are interrupted, and the signal quality of other beams (such as beam 1, beam 4, and beam 5) cannot be known, and the terminal device can carry the beam in the access signal. Measurement request.
  • the base station After receiving the access signal, the base station sends an access response signal to the terminal device, and the access response signal is The configuration information of the reference signal used for beam measurement is carried in.
  • the terminal device may perform beam measurement according to the configuration information carried by the access response signal, determine signal quality of other beams, and thereby determine a new beam for transmission.
  • the access response signal may also carry information indicating an amount of uplink timing advance.
  • the resource configuration information may be carried in terminal device specific dynamic signaling, RRC signaling, Media Access Control (MAC) signaling, uplink scheduling signaling, downlink scheduling signaling, or dedicated to Configure the signaling of the access signal.
  • RRC Radio Resource Control
  • MAC Media Access Control
  • the signaling dedicated to configuring the access signal may be specially configured for the access signal in the embodiment of the present invention.
  • the set of the time-frequency resources in the at least two access resources is a subset of the set of the time-frequency resources based on the contention-based random access, the sequence in the at least two access resources, and the contention-based random The sequence of access is different.
  • adopting the time-frequency resource in the time-frequency resource set of the contention-based random access it is not necessary to separately configure a new time-frequency resource, which can save time-frequency resources and improve the utilization of time-frequency resources.
  • the length of each of the at least two access resources is less than the length of the sequence of contention based random access. This can be distinguished from the sequence of contention-based random access, and can also reduce the sequence occupying time domain resources and improve resource utilization.
  • the subcarrier spacing in the time-frequency resources in the at least two access resources is greater than the subcarrier spacing in the contention-based random access. This can reduce the time domain resources used in multi-beam communication and improve resource utilization.
  • the access signal can be a random access signal and the sequence can be a preamble sequence.
  • the preamble sequence includes a cyclic prefix (Cyclic Prefix, CP) of length T cp and a sequence of length T sep .
  • the preamble sequence has the five formats shown in Table 1 below.
  • the set of preamble sequences includes a root sequence and a cyclic shift sequence generated by the root sequence, and the calculation process is divided into two major steps:
  • the reference sequence x u (n) can be calculated by the following formula:
  • the cyclic sequence x u,v (n) can be calculated by the following formula:
  • N zc is the length of the ZC sequence
  • u is the sequence index
  • n is the index in the sequence
  • N cs is the cyclic shift
  • v is the index of the cyclic shift of the notification.
  • N zc is fixed equal to 839; when the preamble sequence format is 4, N zc is fixed equal to 139.
  • the access signal in the embodiment of the present invention may also be an access signal of other types or formats, and the sequence may also be a sequence of other types or formats, which is not limited by the embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a terminal device 700 according to an embodiment of the present invention. As shown in FIG. 7, the terminal device 700 includes a processing unit 710 and a transmitting unit 720.
  • the processing unit 710 is configured to determine, at the current moment, that the terminal device meets a preset condition that the link abnormality is met, and the current time is located in a pre-configured time window.
  • the processing unit 710 is further configured to select one access resource from the pre-configured at least two access resources as the target access resource, where the at least two access resources are valid for the terminal device in the time window, and the at least two access resources are in the at least two access resources.
  • Each access resource includes a sequence corresponding to a time-frequency resource and a time-frequency resource, and the radio resource control RRC context information of the terminal device is stored in the base station in the time window.
  • the sending unit 720 is configured to send an access signal to the base station by using a time-frequency resource in the target access resource determined by the processing unit 710, where the access signal is determined according to a sequence in the target access resource.
  • the access resource and the time window are pre-configured for the terminal device, and the base station saves the RRC context information of the terminal device in the time window.
  • the terminal device may be in the time window.
  • the access resource is used to send an access signal, and the base station can recover the RRC context of the terminal device according to the access signal and perform normal communication. Since the terminal device does not need to re-request the RRC resource, the access delay of the terminal device is shortened.
  • the time domain resource in the at least two access resources includes at least two time domain resources in the time window.
  • the preset condition of the link abnormality is that the terminal device finds the uplink out-of-synchronization, or the downlink out-of-synchronization, or the radio link connection fails the RLF, or the terminal device does not receive the response signal within the preset time period after sending the scheduling request. Or the terminal device determines that the energy of the at least one pilot signal is lower than the first preset threshold.
  • the preset condition of the link abnormality is that the energy of the at least one first pilot signal is lower than the first preset threshold, and the energy of the at least one second pilot signal is higher than the second preset threshold.
  • the at least one first pilot signal corresponds to at least one first beam for data transmission
  • the at least one second pilot signal corresponds to at least one of the plurality of beams for beam measurement except at least one first beam a second beam
  • the at least one first pilot signal corresponds to at least one first beam for channel measurement
  • the at least one second pilot signal corresponds to at least one of the plurality of beams for beam measurement except at least one of the first beams Two beams; or,
  • At least one first pilot signal corresponds to at least one first beam configured by the base station for the terminal device
  • at least one The second pilot signal corresponds to at least one second beam of the plurality of beams configured by the base station for the cell where the terminal device is located, except for at least one first beam
  • the at least one first pilot signal corresponds to at least one first beam configured by the base station for the terminal device
  • the at least one second pilot signal corresponds to at least one second beam configured by the base station for the terminal device
  • the pilot signal is a beam measurement reference pilot signal or a demodulation pilot signal.
  • the at least two access resources have a corresponding relationship with the transmitting and/or receiving beams of the terminal device
  • the at least two access resources have a corresponding relationship with the transmitting and/or receiving beams of the base station.
  • the access signal carries indication information, where the indication information is used to indicate a sending and/or receiving beam of the terminal device recommended by the terminal device,
  • the indication information is used to indicate a sending and/or receiving beam of the base station recommended by the terminal device.
  • the at least two access resources have a corresponding relationship with the sending and/or receiving beams of the terminal device, where the indication information is sent and/or received by the terminal device recommended by the terminal device.
  • the indication information of the access resource corresponding to the beam is sent and/or received by the terminal device recommended by the terminal device.
  • the at least two access resources have a corresponding relationship with the transmitting and/or receiving beams of the base station, where the indication information is a connection corresponding to the sending and/or receiving beams of the base station recommended by the terminal device. Instructions for entering resources.
  • the terminal device 700 may further include: a receiving unit 730.
  • the receiving unit 730 is configured to receive an access response signal sent by the base station according to the access signal, where the access response signal carries data scheduled by the base station.
  • the access signal carries information for indicating a transmit and/or receive beam of the base station recommended by the terminal device
  • the access response signal further carries information for indicating a transmit and/or receive beam of the terminal device recommended by the base station.
  • the access signal carries a beam measurement request.
  • the receiving unit 230 is configured to receive an access response signal sent by the base station according to the access signal, where the access response signal carries configuration information of the reference signal used for performing beam measurement, where the configuration information is determined by the base station according to the beam measurement request.
  • the access acknowledgement signal also carries information indicating the amount of uplink timing advance.
  • the receiving unit 730 is configured to: when the processing unit determines the target resource, receive the resource configuration information sent by the base station, where the resource configuration information is used to indicate the at least two access resources and/or time. window.
  • the resource configuration information is carried in the terminal device specific dynamic signaling, the RRC signaling, the medium access control MAC signaling, the uplink scheduling signaling, the downlink scheduling signaling, or the signaling dedicated to configuring the access signal.
  • the set of the time-frequency resources in the at least two access resources is a subset of the set of the time-frequency resources based on the contention-based random access, the sequence in the at least two access resources, and the contention-based random The sequence of access is different.
  • the length of each of the at least two access resources is less than the length of the sequence of contention based random access.
  • the subcarrier spacing in the at least two access resources is greater than the subcarrier spacing in the contention based random access.
  • the access signal is a random access signal
  • the sequence is a preamble sequence
  • the length of the time window is related to the number of link anomalies.
  • terminal device 700 may correspond to a terminal device in the access method 100 according to an embodiment of the present invention, and the above and other operations and/or functions of the respective units in the terminal device 700 are respectively The corresponding process of the method 100 shown in FIG. 1 is implemented. For brevity, no further details are provided herein.
  • FIG. 9 is a schematic structural diagram of a terminal device 900 according to another embodiment of the present invention.
  • the terminal device 900 includes a processor 910, a transmitter 920, a receiver 930, a memory 940, and a bus system 950.
  • the various components in terminal device 900 are coupled together by a bus system 950.
  • the memory 940 can be used to store code and the like executed by the processor 910.
  • Transmitter 920 is configured to transmit signals under the control of processor 910.
  • Receiver 930 is configured to receive signals under the control of processor 910.
  • the processor 910 is configured to implement the functions of the processing unit 710
  • the transmitter 920 is configured to implement the functions of the transmitting unit 720
  • the receiver 930 is configured to implement the functions of the receiving unit 730.
  • the terminal device 900 may correspond to the terminal device in the access method 100 according to the embodiment of the present invention and the terminal device 700 according to the embodiment of the present invention, and the above-described respective units in the terminal device 900
  • the other processes and/or functions are respectively implemented in order to implement the corresponding processes of the method 100 shown in FIG. 1.
  • no further details are provided herein.
  • FIG. 10 is a schematic structural diagram of a base station 1000 according to another embodiment of the present invention. As shown in FIG. 10, the base station 1000 includes a processing unit 1010 and a transmitting unit 1020.
  • the processing unit 1010 is configured to generate resource configuration information of the terminal device, where the resource configuration information is used to indicate at least two access resources and/or a time window, where the at least two access resources are valid for the terminal device in the time window, at least two Each access resource in the access resource includes a sequence corresponding to the time-frequency resource and the time-frequency resource, and the base station saves the RRC context information of the terminal device in the time window;
  • the sending unit 1020 is configured to send the resource configuration information generated by the processing unit 1010 to the terminal device when the terminal device is in the RRC connected state.
  • the access resource and the time window are pre-configured for the terminal device, and the base station saves the RRC context information of the terminal device in the time window.
  • the terminal device may be in the time window.
  • the access signal is used to send an access signal, and the base station can recover the RRC context of the terminal device according to the access signal and perform normal communication. Since the terminal device does not need to re-request the RRC resource, the access delay of the terminal device is shortened.
  • the time domain resource in the at least two access resources includes at least two time domain resources in the time window.
  • the at least two access resources have a corresponding relationship with the transmitting and/or receiving beams of the terminal device.
  • the at least two access resources have a corresponding relationship with the transmitting and/or receiving beams of the base station.
  • the processing unit 1010 is further configured to detect, by using at least two access resources, an access signal sent by the terminal device in a time window.
  • the processing unit 1010 is further configured to acquire indication information according to the access signal, where the indication information is used to indicate a sending and/or receiving beam of the terminal device recommended by the terminal device. Or the indication information is used to indicate a sending and/or receiving beam of the base station recommended by the terminal device.
  • the at least two access resources have a corresponding relationship with the sending and/or receiving beams of the terminal device, where the indication information is sent and/or received by the terminal device recommended by the terminal device.
  • the at least two access resources have a corresponding relationship with the transmitting and/or receiving beams of the base station, where the indication information is a connection corresponding to the sending and/or receiving beams of the base station recommended by the terminal device. Instructions for entering resources.
  • the sending unit 1020 is further configured to send an access response signal to the terminal device, where the access response signal carries data scheduled by the base station.
  • the access signal carries information for indicating a transmit and/or receive beam of the base station recommended by the terminal device
  • the access response signal further carries information for indicating a transmit and/or receive beam of the terminal device recommended by the base station.
  • the processing unit 1010 is further configured to acquire a beam measurement request according to the access signal, and determine configuration information of the reference signal used for performing beam measurement according to the beam measurement request.
  • the sending unit 1020 is further configured to send the access response to the terminal device.
  • the signal, the access response signal carries the configuration information.
  • the processing unit 1010 detects the access signal at the first moment, and the sending unit 1020 sends the access response signal to the terminal device at the second moment, where the base station and the terminal are in the interval between the first moment and the second moment. No data transfer occurred between devices.
  • the access acknowledgement signal also carries information indicating the amount of uplink timing advance.
  • the resource configuration information is carried in the terminal device specific dynamic signaling, the RRC signaling, the medium access control MAC signaling, the uplink scheduling signaling, the downlink scheduling signaling, or the signaling dedicated to configuring the access signal.
  • the set of the time-frequency resources in the at least two access resources is a subset of the set of the time-frequency resources based on the contention-based random access, the sequence in the at least two access resources, and the contention-based random The sequence of access is different.
  • the length of each of the at least two access resources is less than the length of the sequence of contention based random access.
  • the subcarrier spacing in the at least two access resources is greater than the subcarrier spacing in the contention based random access.
  • the access signal is a random access signal
  • the sequence is a preamble sequence
  • the length of the time window is related to the number of link anomalies.
  • the base station 1000 may correspond to a base station in the access method 100 according to an embodiment of the present invention, and the above and other operations and/or functions of the respective units in the base station 1000 are respectively implemented in order to implement FIG.
  • the corresponding flow of the method 100 is omitted for brevity.
  • FIG. 11 is a schematic structural diagram of a base station 1100 according to another embodiment of the present invention. As shown in FIG. 11, base station 1100 includes a processor 1110, a transmitter 1120, a memory 1130, and a bus system 1140. The various components in base station 1100 are coupled together by bus system 1140.
  • the memory 1140 can be used to store code and the like executed by the processor 1110.
  • Transmitter 1120 is operative to transmit signals under the control of processor 1110.
  • the processor 1110 is configured to implement the function of the processing unit 910
  • the transmitter 1120 is configured to implement the function of the sending unit 920.
  • the base station 1100 can also include a receiver that can be used to receive signals under the control of the processor 1110.
  • the base station 1100 may correspond to the base station in the access method 100 according to the embodiment of the present invention and the base station 900 according to an embodiment of the present invention, and the above and other operations of the respective units in the base station 1100
  • the functions of the method 100 shown in FIG. 1 are respectively omitted for the sake of brevity.
  • bus system in the above embodiments may include a power bus, a control bus, and a status signal bus in addition to the data bus.
  • bus system in the above embodiments may include a power bus, a control bus, and a status signal bus in addition to the data bus.
  • various buses are labeled as a bus system in the figure.
  • the memory in each of the above embodiments may include a volatile memory such as random access.
  • Memory random-access memory, RAM
  • the memory may also include non-volatile memory such as flash memory, hard disk drive (HDD) or solid state drive (solid-state) Drive, SSD);
  • the memory may also include a combination of the above types of memory.
  • the processor in each of the above embodiments may be a central processing unit (CPU), a network processor (NP), or a combination of a CPU and an NP.
  • Processor 710 can also further include a hardware chip.
  • the hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof.
  • the PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL), or any combination thereof.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

Landscapes

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

Abstract

L'invention concerne un procédé d'accès, un dispositif terminal, et une station de base. Le procédé comprend les étapes suivantes : le dispositif terminal est déterminé pour satisfaire une condition prédéfinie d'exception de liaison au moment actuel, le moment actuel se trouvant dans une fenêtre temporelle préconfigurée ; le dispositif terminal sélectionne une ressource d'accès en tant que ressource d'accès cible parmi au moins deux ressources d'accès, lesdites deux ressources d'accès ou plus étant efficaces pour le dispositif terminal dans la fenêtre temporelle, chaque ressource d'accès desdites deux ressources d'accès ou plus comprenant une ressource temps-fréquence et une séquence correspondant à la ressource temps-fréquence, et des informations de contexte de gestion des ressources radioélectriques (RRC) concernant le dispositif terminal dans la fenêtre temporelle étant stockées dans la station de base ; et le dispositif terminal utilise la ressource temps-fréquence dans la ressource d'accès cible pour transmettre un signal d'accès à la station de base, le signal d'accès étant déterminé d'après la séquence dans la ressource d'accès cible. Dans les modes de réalisation de la présente invention, le dispositif terminal n'a pas besoin de redemander la ressource RRC car il est apte à réduire le retard d'accès du dispositif terminal.
PCT/CN2017/103483 2016-09-30 2017-09-26 Procédé, dispositif, et système d'accès aléatoire, terminal, et station de base WO2018059399A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BR112019006472A BR112019006472A2 (pt) 2016-09-30 2017-09-26 método de acesso aleatório, aparelho, sistema, terminal e estação base
KR1020197012624A KR102283448B1 (ko) 2016-09-30 2017-09-26 랜덤 액세스 방법, 장치, 시스템, 단말기 및 기지국
EP17854849.1A EP3515147B1 (fr) 2016-09-30 2017-09-26 Procédé, dispositif, et système d'accès aléatoire, terminal, et station de base
US16/370,430 US10966255B2 (en) 2016-09-30 2019-03-29 Random access method, apparatus, system, terminal, and base station

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201610877255 2016-09-30
CN201610877255.5 2016-09-30
CN201710082216.0A CN108307413B (zh) 2016-09-30 2017-02-15 接入方法、终端设备和基站
CN201710082216.0 2017-02-15

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US16/370,430 Continuation US10966255B2 (en) 2016-09-30 2019-03-29 Random access method, apparatus, system, terminal, and base station

Publications (1)

Publication Number Publication Date
WO2018059399A1 true WO2018059399A1 (fr) 2018-04-05

Family

ID=61763170

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/103483 WO2018059399A1 (fr) 2016-09-30 2017-09-26 Procédé, dispositif, et système d'accès aléatoire, terminal, et station de base

Country Status (1)

Country Link
WO (1) WO2018059399A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020061844A1 (fr) * 2018-09-26 2020-04-02 富士通株式会社 Procédé d'envoi de signal, et procédé et dispositif de réception de signal
US11006441B2 (en) 2017-09-22 2021-05-11 Asustek Computer Inc. Method and apparatus of preventing bandwidth part misalignment in a wireless communication system
CN112803979A (zh) * 2018-05-09 2021-05-14 Oppo广东移动通信有限公司 无线通信方法和终端

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101594678A (zh) * 2008-05-26 2009-12-02 普天信息技术研究院有限公司 一种非竞争随机接入的实现方法
CN102215475A (zh) * 2010-04-02 2011-10-12 中兴通讯股份有限公司 一种漫游场景下资源查询方法和系统
WO2015008956A1 (fr) * 2013-07-16 2015-01-22 Lg Electronics Inc. Procédé et appareil pour effectuer une procédure d'accès aléatoire dans un système de communication sans fil

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101594678A (zh) * 2008-05-26 2009-12-02 普天信息技术研究院有限公司 一种非竞争随机接入的实现方法
CN102215475A (zh) * 2010-04-02 2011-10-12 中兴通讯股份有限公司 一种漫游场景下资源查询方法和系统
WO2015008956A1 (fr) * 2013-07-16 2015-01-22 Lg Electronics Inc. Procédé et appareil pour effectuer une procédure d'accès aléatoire dans un système de communication sans fil

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3515147A4 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11006441B2 (en) 2017-09-22 2021-05-11 Asustek Computer Inc. Method and apparatus of preventing bandwidth part misalignment in a wireless communication system
CN112803979A (zh) * 2018-05-09 2021-05-14 Oppo广东移动通信有限公司 无线通信方法和终端
CN112803979B (zh) * 2018-05-09 2023-01-17 Oppo广东移动通信有限公司 无线通信方法和终端
WO2020061844A1 (fr) * 2018-09-26 2020-04-02 富士通株式会社 Procédé d'envoi de signal, et procédé et dispositif de réception de signal
CN112640568A (zh) * 2018-09-26 2021-04-09 富士通株式会社 信号发送方法、信号接收方法及装置
CN112640568B (zh) * 2018-09-26 2022-06-28 富士通株式会社 信号发送方法、信号接收方法及装置
US11843437B2 (en) 2018-09-26 2023-12-12 Fujitsu Limited Signal transmission method, signal reception method and apparatuses thereof

Similar Documents

Publication Publication Date Title
US10966255B2 (en) Random access method, apparatus, system, terminal, and base station
US10893566B2 (en) Method for receiving beam recovery request and network device
US11343800B2 (en) Control channel resource indication method, user equipment, and network device
US11395267B2 (en) Wireless communication method, terminal device, and network device
WO2019196118A1 (fr) Regroupement cellulaire pour gestion de faisceau
WO2020038331A1 (fr) Procédé et appareil de détermination d'une ressource de liaison montante
US11252621B2 (en) Uplink carrier handover method, network device, and terminal device
EP3432678B1 (fr) Dispositif et procédé de configuration d'un noeud secondaire et de rapport en double connectivité
US11470589B2 (en) Communication method and communications apparatus
US20200163069A1 (en) Control channel resource configuration method, base station, and terminal device
KR101933067B1 (ko) 장치 대 장치 신호를 검출하는 방법, 사용자 기기, 및 기지국
US20230262820A1 (en) Beam failure recovery method and apparatus, terminal, and storage medium
WO2018059399A1 (fr) Procédé, dispositif, et système d'accès aléatoire, terminal, et station de base
WO2022210107A1 (fr) Terminal, station de base et procédé de communication sans fil
WO2019039989A1 (fr) Regroupement de préambules de prach pour récupération de faisceau

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17854849

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112019006472

Country of ref document: BR

ENP Entry into the national phase

Ref document number: 20197012624

Country of ref document: KR

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 2017854849

Country of ref document: EP

Effective date: 20190417

REG Reference to national code

Ref country code: BR

Ref legal event code: B01E

Ref document number: 112019006472

Country of ref document: BR

Free format text: APRESENTE O RELATORIO DESCRITIVO E OS DESENHOS.

ENP Entry into the national phase

Ref document number: 112019006472

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20190329