WO2019096285A1 - Procédé et dispositif de commande d'accès à un réseau - Google Patents

Procédé et dispositif de commande d'accès à un réseau Download PDF

Info

Publication number
WO2019096285A1
WO2019096285A1 PCT/CN2018/116063 CN2018116063W WO2019096285A1 WO 2019096285 A1 WO2019096285 A1 WO 2019096285A1 CN 2018116063 W CN2018116063 W CN 2018116063W WO 2019096285 A1 WO2019096285 A1 WO 2019096285A1
Authority
WO
WIPO (PCT)
Prior art keywords
uplink carrier
uplink
terminal
resource
network device
Prior art date
Application number
PCT/CN2018/116063
Other languages
English (en)
Chinese (zh)
Inventor
陈磊
李秉肇
熊新
王学龙
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
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2019096285A1 publication Critical patent/WO2019096285A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • 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 embodiments of the present application relate to communications technologies, and in particular, to a method and an apparatus for controlling an access network.
  • GSM Global System for Mobile Communications
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency-Division Multiple Access
  • SC-FDMA single carrier FDMA
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • UMTS Universal Mobile Telecommunications System
  • new wireless access network allows to provide more than LTE network High transmission rate
  • LTE Long Term Evolution
  • UMTS Universal Mobile Telecommunications System
  • new wireless access network is also called 5G network, next generation communication network and so on.
  • a conventional cell is composed of one downlink carrier and one uplink carrier, and the frequency of the uplink carrier and the downlink carrier are the same or similar in the conventional cell.
  • the current spectrum resources have been difficult to meet the user's demand for capacity growth.
  • the high frequency band with larger available bandwidth is called the candidate band of the 5G system; at the same time, in order to satisfy most users (especially Edge users) Signal transmission coverage and high communication quality requirements.
  • the frequency band in the high-frequency cell is higher and the transmission power of the terminal is lower, so that the terminal in the cell edge region can receive the signal of the base station in the cell.
  • the base station cannot receive the signal of the terminal in the edge area, that is, there is a problem that the uplink and downlink coverage is asymmetric.
  • an additional lower frequency uplink frequency band may be introduced outside the original high frequency uplink frequency band of the cell to send an uplink signal.
  • the lower frequency uplink frequency band is referred to as a supplementary uplink.
  • auxiliary Uplink carrier or auxiliary uplink carrier, referred to as the high frequency uplink frequency band (Primary Uplink, PUL) carrier or non-supplementary uplink (non-SUL) carrier, because the additional lower frequency uplink frequency band has more Small signal attenuation allows for increased uplink coverage to achieve consistent uplink and downlink coverage.
  • PUL Primary Uplink
  • non-SUL non-supplementary uplink
  • the uplink handover of the terminal is based on the network side decision. For example, the terminal period reports the measurement result to the base station, and the base station determines whether the terminal needs to perform uplink handover according to the measurement result, and if the uplink handover needs to be performed, sends the downlink control information.
  • the Downlink Control Information (DCI) indicates to the terminal that the terminal wants to switch to the time-frequency resource location of the new uplink carrier, and the terminal continues to transmit data on the new uplink carrier.
  • DCI Downlink Control Information
  • the terminal For a cell configured with a SUL carrier and a PUL carrier, when the terminal moves from the central area to the edge area, the PUL carrier quality drops sharply. If the terminal initiates random access (RA) or performs a wireless chain on the PUL carrier at this time.
  • the data transmission of the Layer Link Control Protocol (RLC) layer is likely to cause the RA to fail or reach the maximum number of retransmissions in the RLC layer due to the deterioration of the PUL carrier condition, thereby triggering the radio link failure (Radio Link Failure, RLF). )process.
  • RLF Radio Link Failure
  • aspects of the present application provide a variety of communication methods and apparatus that can avoid triggering RLF processes as much as possible.
  • An aspect of the present application provides a communication method, including: determining, by a terminal, that a number of times a random access request is sent by a first uplink carrier reaches a threshold or that a number of retransmissions of a first uplink carrier radio link layer control protocol RLC layer reaches a threshold; The terminal triggers the handover to the second uplink carrier to communicate with the network device, where the first uplink carrier and the second uplink carrier belong to the same cell.
  • the triggering, by the terminal, to switch to the second uplink carrier to communicate with the network device includes: the terminal initiating random access on the second uplink carrier.
  • the power that the terminal initiates random access on the second uplink carrier is equal to the power that the terminal initiates random access on the first uplink carrier last time.
  • the terminal receives an uplink carrier switching indication from the network device in the process of initiating a random access by the second uplink carrier, where the uplink carrier switching indication carries the An identifier of the uplink carrier and an uplink resource, where the uplink carrier switching indication is used to indicate that the terminal switches to the second uplink carrier; if the random access fails or the number of times the random access request is sent reaches a threshold, The terminal does not configure a service request or the service request is invalid on the first uplink carrier, and the terminal terminates the random access on the second uplink carrier, and sends the data by using the uplink resource carried by the uplink carrier switching indication.
  • the terminal terminates the randomization on the second uplink carrier. And accessing, retransmitting the data by using the uplink resource carried by the uplink carrier switching indication, and clearing the RLC layer retransmission counter.
  • the triggering, by the terminal, the second uplink carrier to communicate with the network device includes: using, by the terminal, the second uplink carrier configured by the network device for the terminal
  • the semi-statically scheduled SPS resource sends data.
  • the terminal when the terminal enters a connected state by using the first uplink carrier, or the terminal switches from the second uplink carrier to the first uplink carrier, receiving the network device configuration.
  • the SPS resource is configured to notify the network device that the SPS resource of the second uplink carrier is configured, and when the terminal determines that the first threshold ⁇ the measurement result of the downlink reference signal ⁇ the second threshold, Receiving the SPS resource from the network device.
  • the first timer is started; if the terminal does not receive the network device before the first timer expires ACK feedback, triggering a radio link failure RLF procedure; or, if the terminal receives ACK feedback of the network device before the first timer expires, determining to successfully switch to the second uplink carrier.
  • a communication apparatus including: a processor, configured to determine that a number of times a random access request is sent on a first uplink carrier reaches a threshold or a retransmission in a first uplink carrier radio link layer control protocol RLC layer The number of times reaches a threshold; the transceiver is configured to trigger a handover to the second uplink carrier to communicate with the network device, where the first uplink carrier and the second uplink carrier belong to the same cell.
  • the transceiver is configured to trigger the handover to the second uplink carrier to communicate with the network device, where the transceiver is configured to initiate random access on the second uplink carrier.
  • the power that the transceiver initiates random access on the second uplink carrier is equal to the power that the transceiver initiates random access on the first uplink carrier last time.
  • the transceiver is further configured to: receive, by the network device, an uplink carrier switching indication, where the second uplink carrier initiates a random access, where the uplink carrier switching indication And carrying the identifier of the second uplink carrier and the uplink resource, where the uplink carrier switching indication is used to indicate handover to the second uplink carrier; if the random access fails or the number of times the random access request is sent reaches a threshold
  • the first uplink carrier is not configured with a service request or the service request is invalid, and the transceiver is further configured to terminate the random access initiated by the second uplink carrier, and use the uplink resource carried by the uplink carrier switching indication.
  • the transceiver is further configured to terminate in the The second uplink carrier initiates random access, and uses the uplink resource carried by the uplink carrier switching indication to resend data, where the processor is further used to RLC layer retransmission counter is cleared.
  • the transceiver is configured to trigger the handover to the second uplink carrier to communicate with the network device, where the method includes: the transceiver is configured to use the network device to configure the terminal The semi-statically scheduled SPS resource of the second uplink carrier transmits data.
  • the processor is further configured to determine that the terminal enters a connected state by using the first uplink carrier or switches from the second uplink carrier to the first uplink carrier, where the transceiver further The SPS resource is configured to receive the network device configuration; or the processor is further configured to determine that the first threshold ⁇ the measurement result of the downlink reference signal ⁇ the second threshold, where the transceiver is further configured to notify the network
  • the device configures the SPS resource of the second uplink carrier for the device, and receives the SPS resource from the network device.
  • the processor is further configured to: when the transceiver sends the data by using the SPS resource, start a first timer; and the processor is further configured to: if the transceiver Not receiving ACK feedback from the network device before the first timer expires, triggering a radio link failure RLF procedure; or if the transceiver receives the network before the first timer expires The ACK feedback of the device determines to successfully switch to the second uplink carrier.
  • Another aspect of the present application provides a communication method, including: configuring, by a network device, a semi-persistent scheduling SPS resource of a second uplink carrier for a terminal, and transmitting the SPS resource to the terminal; and receiving, by the network device, the terminal in a first uplink carrier
  • the first uplink carrier and the second uplink carrier belong to the same cell.
  • the method before the network device configures the SPS resource of the second uplink carrier for the terminal, the method further includes: the network device learning that the terminal passes the first The uplink carrier enters a connected state or the terminal switches from the second uplink carrier to the first uplink carrier; or the network device receives the measurement result of the terminal determining the first threshold ⁇ downlink reference signal ⁇ second The notification sent by the threshold, the notification is used to notify the network device to configure the SPS resource of the second uplink carrier for the terminal.
  • the network device when the network device receives the data sent by the terminal from the SPS resource, the ACK is sent to the terminal, and the terminal is allocated an uplink of the second uplink carrier. Resources.
  • a communication apparatus including: a processor, configured to configure, for a terminal, a semi-persistent scheduling SPS resource of a second uplink carrier; a transceiver, configured to send the SPS resource to the terminal;
  • the terminal uses a random access failure on the first uplink carrier or the number of times the random access request is sent on the first uplink carrier reaches a threshold or is used when the number of retransmissions of the first uplink carrier radio link layer control protocol RLC layer reaches a threshold.
  • the processor is further configured to: before configuring the SPS resource of the second uplink carrier for the terminal, determine that the terminal enters a connection by using the first uplink carrier. Or the terminal is switched from the second uplink carrier to the first uplink carrier; or the transceiver is further configured to: configure, by the processor, the second uplink carrier for the terminal Before the SPS resource is received, receiving, by the terminal, a notification sent when determining that the first threshold ⁇ the downlink reference signal measurement result ⁇ the second threshold, the notification is used to notify the processor to configure the second uplink for the terminal The SPS resource of the carrier.
  • the transceiver is further configured to: when receiving the data sent by the terminal from the SPS resource, ACK to the terminal; The terminal allocates an uplink resource of the second uplink carrier, and the transceiver is further configured to send, to the terminal, the uplink resource that the processor allocates the second uplink carrier.
  • Another aspect of the present application provides a communication method, including: when a terminal determines that the same coverage area of the first uplink carrier and the second uplink carrier is located, the network device is notified to configure an uplink resource and a location of the first uplink carrier An uplink resource of the second uplink carrier, where the first uplink carrier and the second uplink carrier belong to the same cell, and the uplink resource of the first uplink carrier and the second uplink carrier are The uplink resources are different from each other; the terminal receives, by the network device, the uplink resource of the first uplink carrier and the uplink resource of the second uplink carrier, where the terminal sends data in the terminal The uplink resource of the first uplink carrier and the uplink resource of the second uplink carrier are sent to the network device.
  • the terminal starts a second timer when the uplink resource of the first uplink carrier and the uplink resource of the second uplink carrier send the data;
  • the terminal does not receive the ACK feedback of the network device before the second timer expires, triggering the radio link failure RLF process; or if the terminal receives the network before the second timer expires
  • the ACK feedback of the device restarts the second timer and continues to send subsequent data on the uplink resource of the uplink carrier currently configured by the network device.
  • a communication apparatus including: a processor, configured to determine that the communication device is located in a same coverage area of a first uplink carrier and a second uplink carrier; and a transceiver, configured to be used according to the processor Determining, by the network device, the uplink resource of the first uplink carrier and the uplink resource of the second uplink carrier, where the first uplink carrier and the second uplink carrier belong to the same cell And the uplink resource of the first uplink carrier and the uplink resource of the second uplink carrier are different from each other; and receiving, by the network device, the uplink resource and the second resource of the first uplink carrier And the uplink resource of the uplink carrier, where the data is sent to the network device on the uplink resource of the first uplink carrier and the uplink resource of the second uplink carrier.
  • the processor is further configured to: when the transceiver sends the data on the uplink resource of the first uplink carrier and the uplink resource of the second uplink carrier a second timer is started; the processor is further configured to: if the transceiver does not receive the ACK feedback of the network device before the second timer expires, triggering a radio link failure RLF process; or And if the transceiver receives the ACK feedback of the network device before the second timer expires, restarting the second timer, where the transceiver is further configured to continue the uplink currently configured on the network device. The subsequent data is sent to the network device on the uplink resource of the carrier.
  • Another aspect of the present application provides a communication method, including: a notification sent by a network device when a terminal is located in a same coverage area of a first uplink carrier and a second uplink carrier, where the notification is used to notify the network device that the The terminal configures an uplink resource of the first uplink carrier and an uplink resource of the second uplink carrier, where the first uplink carrier and the second uplink carrier belong to the same cell, where the first uplink carrier The uplink resource and the uplink resource of the second uplink carrier are different from each other; the network device configures the uplink resource and the second uplink carrier of the first uplink carrier for the terminal according to the notification The uplink resource of the first uplink carrier and the uplink resource of the second uplink carrier to the terminal; the network device receiving the terminal in the The uplink resource of the first uplink carrier and the data sent by the uplink resource of the second uplink carrier.
  • the network device starts when the uplink resource of the first uplink carrier and the uplink resource of the second uplink carrier receive the data sent by the terminal. a third timer; after the third timer expires, if the network device determines that the link of one of the uplink carriers of the first uplink carrier and the second uplink carrier is normal, another chain of uplink carriers If the path is faulty or fails, the network device configures an uplink resource for the normal uplink carrier and sends the uplink resource to the terminal; or, after the third timer expires, if the network device determines the first uplink carrier and the The link of the second uplink is normal, and the terminal is located in a boundary area of the uplink carrier with a small coverage in the first uplink carrier and the second uplink carrier, where the network device terminates as the terminal The uplink resource of the uplink carrier with a smaller coverage area is configured, and the uplink resource of the uplink carrier with a larger coverage area is configured for the terminal.
  • the duration of the third timer is greater than the duration of the second timer, where the second timer is the uplink resource of the terminal on the first uplink carrier, and the The data is started when the data is sent on the uplink resource of the second uplink carrier.
  • a communication apparatus including: a receiver, configured to receive a notification that is sent when a terminal is located in a same coverage area of a first uplink carrier and a second uplink carrier, where the notification is used to notify the network device Configuring, for the terminal, the uplink resource of the first uplink carrier and the uplink resource of the second uplink carrier, where the first uplink carrier and the second uplink carrier belong to the same cell, and the first uplink The uplink resource of the carrier and the uplink resource of the second uplink carrier are different from each other; the processor is configured to configure, according to the notification, the uplink resource of the first uplink carrier and the The uplink resource of the second uplink carrier; the receiver is further configured to send, to the terminal, the uplink resource of the first uplink carrier and the uplink resource of the second uplink carrier; and receive the terminal Data transmitted on the uplink resource of the first uplink carrier and the uplink resource of the second uplink carrier.
  • the processor is further configured to receive, by the transceiver, the terminal on the uplink resource of the first uplink carrier and the uplink resource of the second uplink carrier.
  • the processor is further configured to: if one of the first uplink carrier and the second uplink carrier is determined to be uplinked
  • the link of the carrier is normal, and the link of the other uplink carrier is faulty or invalid.
  • the uplink resource is configured for the normal uplink carrier of the link and sent to the terminal, and the uplink carrier configured for the link failure or failure is configured to be uplinked.
  • the processor is further configured to: if it is determined that the first uplink carrier and the second uplink link are both normal, and determine that the terminal is located in the The boundary area of the uplink carrier with a smaller coverage area of the first uplink carrier and the second uplink carrier is terminated, and the uplink resource of the uplink carrier with a smaller coverage is configured for the terminal, and is the terminal Coverage of a larger set of uplink carriers uplink resource.
  • the duration of the third timer is greater than the duration of the second timer, where the second timer is the uplink resource of the terminal on the first uplink carrier, and the The data is started when the data is sent on the uplink resource of the second uplink carrier.
  • Another aspect of the present application provides a computer readable medium for storing a computer program, the computer program comprising instructions for performing the method of any of the possible implementations of any of the above aspects.
  • Another aspect of the present application provides a computer program product comprising: computer program code when the computer program code is communicated by a communication unit (eg, a terminal device or a network device), a processing unit, or The transceiver, when the processor is running, causes the communication device to perform the method of any of the possible implementations of any of the above aspects.
  • a communication unit eg, a terminal device or a network device
  • the transceiver when the processor is running, causes the communication device to perform the method of any of the possible implementations of any of the above aspects.
  • Another aspect of the present application provides a communication chip in which instructions are stored that, when executed on a communication device, cause the communication chip to perform the method of any of the possible implementations of any of the above aspects.
  • Another aspect of the present application provides a communication system including the above-described terminal device and network device.
  • the communication method and apparatus described above can avoid triggering the RLF process.
  • FIG. 1 is a schematic structural diagram of a possible radio access network according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a communication system according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a communication system according to another embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a communication method according to an embodiment of the present application.
  • FIG. 5 is a schematic flowchart diagram of a communication method according to an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of a communication method according to another embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a communication system according to another embodiment of the present disclosure.
  • FIG. 8 is a schematic flowchart diagram of a communication method according to another embodiment of the present application.
  • FIG. 9 is a schematic flowchart of a communication method according to another embodiment of the present application.
  • FIG. 10 is a schematic flowchart of a communication method according to another embodiment of the present application.
  • FIG. 11 is a schematic flowchart of a communication method according to another embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a terminal according to another embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a communication apparatus according to another embodiment of the present application.
  • a “module” as referred to herein generally refers to a program or instruction stored in a memory that allows for some work to be allowed; the “unit” referred to herein generally refers to a work-permissive structure that is logically divided.
  • the "unit” can be implemented by pure hardware or a combination of hardware and software.
  • Multiple as referred to herein means two or more. "and/or”, describing the association relationship of the associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately.
  • the character "/" generally indicates that the contextual object is an "or" relationship.
  • FIG. 1 is a schematic structural diagram of a possible radio access network (RAN) according to an embodiment of the present invention.
  • the RAN includes one or more network devices 20.
  • the radio access network can be connected to a core network (CN).
  • the network device 20 can be any device having a wireless transceiving function.
  • the network device 20 includes, but is not limited to, a base station (eg, a base station BS, a base station NodeB, an evolved base station eNodeB or eNB, a base station gNodeB or gNB in a fifth generation 5G communication system, a base station in a future communication system, and a WiFi system).
  • the base station may be: a macro base station, a micro base station, a pico base station, a small station, a relay station, and the like.
  • a plurality of base stations may support a network of one or more of the techniques mentioned above, or a future evolved network.
  • the core network may support the above mentioned network of one or more technologies, or a future evolved network.
  • the base station may include one or more co-site or non-co-located transmission receiving points (TRPs).
  • the network device 20 may also be a wireless controller, a centralized unit (CU), or a distributed unit (DU) in a cloud radio access network (CRAN) scenario.
  • the network device can also be a server, a wearable device, or an in-vehicle device.
  • the network device 20 will be described as an example of a base station.
  • the plurality of network devices 20 may be the same type of base station or different types of base stations.
  • the base station can communicate with the terminal 10 or with the terminal 10 via the relay station.
  • the terminal 10 can support communication with multiple base stations of different technologies.
  • the terminal can support communication with a base station supporting the LTE network, can also support communication with a base station supporting the 5G network, and can also support the base station with the LTE network and the 5G network. Dual connectivity of the base station.
  • a terminal also called a user equipment (UE), a mobile station (MS), a mobile terminal (MT), etc.
  • UE user equipment
  • MS mobile station
  • MT mobile terminal
  • a terminal is a device that provides voice and/or data connectivity to a user.
  • a handheld device an in-vehicle device, or the like that has wireless connection capabilities.
  • some examples of terminals are: mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality. (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical surgery, smart grid
  • a network device is a device in a wireless network, such as a radio access network (RAN) node that connects a terminal to a wireless network.
  • RAN nodes are: gNB, transmission reception point (TRP), evolved Node B (eNB), radio network controller (RNC), and Node B (Node).
  • B, NB base station controller (BSC), base transceiver station (BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit , BBU), or wireless fidelity (Wifi) access point (AP).
  • a network device may include a centralized unit (CU) node, or a distributed unit (DU) node, or a RAN device including a CU node and a DU node.
  • CU centralized unit
  • DU distributed unit
  • the RAN may be a base station access system of a 2G network (ie, the RAN includes a base station and a base station controller), or may be a base station access system of a 3G network (ie, the RAN includes a base station and an RNC), or may be 4G.
  • the base station access system of the network ie, the RAN includes an eNB and an RNC
  • the CN may be an MME and/or an S-GW of a 4G network, or may be an SGSN or a GGSN of a 3G network, or may be a Next Generation Core Network (NG-Core) of a 5G network.
  • NG-Core Next Generation Core Network
  • the gNB generally includes the following functions of at least one protocol layer: a Radio Resource Control (RRC) layer, a Packet Data Convergence Protocol (PDCP) layer, and a Radio Link Control (RLC). Layer, Media Access Control (MAC) layer and Physical Layer (PHY).
  • RRC Radio Resource Control
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • Layer Media Access Control
  • PHY Physical Layer
  • the gNB may adopt a Centralized Unit (CU) and a Distributed Unit (DU) architecture, and the CU and the DU communicate by wire or wireless, and the DU communicates with the terminal through an air interface, and the terminal Move in different cells under the same or different DUs.
  • CU Centralized Unit
  • DU Distributed Unit
  • the gNB adopts the CU-DU architecture, there are multiple allowable partitions of the CU and the DU function.
  • One of the work allowed partitioning modes may be: the CU includes an RRC layer and a PDCP layer, and the DU includes an RLC layer, a MAC layer, and a PHY. Floor.
  • the network equipment in the radio access network RAN is a base station (such as a gNB) of a CU and a DU separation architecture.
  • the RAN can be connected to the core network (for example, it can be the core network of LTE, or the core network of 5G, etc.).
  • CU and DU can be understood as the division of the base station from the perspective of logical functions.
  • CUs and DUs can be physically separated or deployed together.
  • the function of the RAN terminates at the CU. Multiple DUs can share one.
  • a DU can also be connected to multiple CUs (not shown).
  • the CU and the DU can be connected through an interface, for example, an F1 interface.
  • the CU and DU can be divided according to the protocol layer of the wireless network.
  • the CU includes functions of an RRC layer and a PDCP layer
  • the DU includes functions of an RLC layer, a MAC layer, and a PHY layer.
  • the division of the CU and DU processing functions according to this protocol layer is merely an example, and may be divided in other manners.
  • a CU or a DU can be divided into functions having more protocol layers.
  • a CU or a DU can also be divided into partial processing functions with a protocol layer.
  • some functions of the RLC layer and functions of the protocol layer above the RLC layer are set in the CU, and the remaining functions of the RLC layer and the functions of the protocol layer below the RLC layer are set in the DU.
  • the functions of the CU or DU can also be divided according to the type of service or other system requirements. For example, according to the delay division, the function that needs to meet the delay requirement in the processing time is set in the DU, and the function that does not need to meet the delay requirement is set in the CU.
  • the network architecture shown in Figure 2 can be applied to a 5G communication system, which can also share one or more components or resources with an LTE system.
  • the CU may also have one or more functions of the core network.
  • One or more CUs can be set centrally and also separated.
  • the CU can be set to facilitate centralized management on the network side.
  • the DU can have multiple RF functions or remotely set the RF function.
  • FIG. 3 is a schematic diagram of a communication system according to another embodiment of the present application, where the communication system includes a network device 310 and a terminal 320, where the network device 310 is configured to connect the terminal 320 to the wireless network, in the SUL.
  • the communication system includes a network device 310 and a terminal 320, where the network device 310 is configured to connect the terminal 320 to the wireless network, in the SUL.
  • one cell has one downlink download wave and two uplink carriers, and the two uplink carriers have different frequency bands, that is, the coverage ranges are different, and the uplink carrier coverage range with the higher frequency band is smaller than the lower frequency band.
  • the uplink carrier coverage of the higher frequency band is referred to as a first uplink carrier or a PUL carrier or a non-PUL carrier
  • the uplink carrier of the lower frequency band is referred to as a second uplink carrier or a secondary uplink carrier or a SUL carrier.
  • the terminal 320 may allow selection of the first uplink carrier or the second uplink.
  • the carrier accesses the network device 310, when the terminal 320 camps on a boundary (eg, a PUL boundary) of the first uplink carrier and a boundary of the second uplink carrier (eg, a SUL boundary) When the area (i.e., away from the edge region 310 of the network device) between the terminal 320 by a second uplink carrier of the network access device 310.
  • a boundary e.g, a PUL boundary
  • a boundary of the second uplink carrier eg, a SUL boundary
  • FIG. 4 is a schematic flowchart diagram of a communication method according to an embodiment of the present application.
  • Step 401 The terminal determines that the number of times the random access request is sent by the first uplink carrier reaches a threshold or the number of retransmissions of the RLC layer of the first uplink carrier radio link layer control protocol reaches a threshold.
  • the terminal When the terminal enters or camps on the cell, the terminal receives the carrier configuration information sent by the network device of the cell by using a broadcast channel or a dedicated channel, for example, the configuration information includes the first uplink carrier and the second uplink. Carrier. In another embodiment of the present application, the carrier configuration information further includes downlink carrier information.
  • the first uplink carrier and the second uplink carrier belong to the same cell.
  • the first uplink carrier may be referred to as a PUL carrier
  • the second uplink carrier may be referred to as a secondary uplink carrier or a SUL carrier
  • the first uplink carrier and the second uplink The carrier can have different frequency bands or the same or similar frequency bands.
  • the coverage of the first uplink carrier and the second uplink carrier partially overlap, for example, the first uplink carrier If the frequency band is higher than the frequency band of the second uplink carrier, the coverage of the first uplink carrier is smaller than the coverage of the second uplink carrier, and the coverage of the first uplink carrier is located in the second uplink carrier.
  • the terminal may select the first uplink carrier to initiate network access, or select the second uplink carrier to initiate network access.
  • the frequency band of the first uplink carrier and the frequency band of the second uplink carrier are the same or similar, the coverage ranges of the first uplink carrier and the second uplink carrier are the same or substantially the same.
  • the frequency band of the first uplink carrier is higher than the frequency band of the second uplink carrier, and the range covered by the first uplink carrier is smaller than the range covered by the second uplink carrier.
  • the terminal is located in the range covered by the first uplink carrier, and is connected to the network device by using the first uplink carrier, that is, the terminal processes a connection state, and when the terminal covers the first uplink carrier, When the boundary moves, the signal of the first uplink carrier is continuously weakened, and the terminal continuously initiates a random access request or performs a radio link layer control protocol (radio link) on the first uplink. Control, RLC) layer retransmission.
  • the random access request may be referred to as MSG1.
  • the terminal Determining, by the terminal, that the number of times the random access request is sent by the first uplink carrier reaches a threshold (for example, the threshold is 5 times) or the number of retransmissions of the RLC layer reaches the threshold on the first uplink carrier (for example, the threshold is the maximum value) The number of retransmissions, for example, 6 times).
  • a threshold for example, the threshold is 5 times
  • the number of retransmissions of the RLC layer reaches the threshold on the first uplink carrier (for example, the threshold is the maximum value)
  • the number of retransmissions for example, 6 times).
  • the terminal determines that when the number of times the first uplink carrier sends a random access request reaches a threshold, the terminal may consider that a random access failure occurs on the first uplink carrier.
  • Step 402 The terminal triggers handover to the second uplink carrier to communicate with the network device.
  • the terminal triggering the handover to the second uplink carrier to communicate with the network device includes: the terminal initiating random access on the second uplink carrier, or the terminal using the network device to configure the terminal
  • the semi-persistent scheduling (SPS) resource of the second uplink carrier transmits data.
  • the terminal may initiate random access on the second uplink carrier, and the main process may be as shown in FIG. 5, which is a communication according to an embodiment of the present application. Schematic diagram of the process.
  • Step 501 The terminal sends a random access request on the second uplink carrier.
  • the terminal sends the MSG1 on a physical random access channel (PRACH) of the second uplink carrier, and the terminal sends a random access request (for example, MSG1) on the second uplink carrier.
  • PRACH physical random access channel
  • MSG1 random access request
  • the power is equal to the power of the last time the terminal sends a random access request (eg, MSG1) on the first uplink carrier.
  • Step 502 The terminal determines whether the random access of the second uplink carrier is successful.
  • the network device sends a Random Access Response (RAR) message, also called MSG2, to the terminal in response window time.
  • RAR Random Access Response
  • the terminal After receiving the MSG2, the terminal sends the MSG3 on the second uplink carrier, and includes the Cell Radio Network Temporary Identifier (C-RNTI) of the terminal in the MSG3, and tells The network device initiates the purpose of the RA (eg, synchronizing or transmitting data).
  • C-RNTI Cell Radio Network Temporary Identifier
  • the network device After the network device receives the MSG3 that includes the C-RNTI identifier, the network device knows that the uplink carrier switching of the terminal occurs, and sends the MSG4 to the terminal, if the MSG4 includes the C-RNTI of the terminal.
  • the terminal determines that the random access (RA) is successful. If the terminal is an RA that is initiated to send data, the network device indicates the current uplink carrier (ie, the second uplink carrier) of the terminal in the MSG4. Uplink resources available on the uplink, such as a time-frequency resource, for example, a Physical Uplink Shared Channel (PUSCH) resource; if the terminal is in order to enter the RA initiated by the synchronization state, the terminal re-enters the synchronization state ( Step 503). If the C-RNTI of the terminal is not included in the MSG4, the terminal determines that the RA fails and then triggers the RLF (ie, step 504).
  • PUSCH Physical Uplink Shared Channel
  • Step 503 The terminal sends data on the uplink resource allocated by the MSG4 or re-enters the synchronization state.
  • the terminal receives an uplink carrier switching indication from the network device in the process of initiating a random access by the second uplink carrier, where the uplink carrier switching indication carries the An identifier of the uplink carrier and an uplink resource, where the uplink carrier switching indication is used to indicate that the terminal switches to the second uplink carrier.
  • the terminal does not configure a service request (SR) or a service request to be invalid on the first uplink carrier (for example, sending a link interruption) , for example, RLF occurs, the terminal terminates the random access on the second uplink carrier, and uses the uplink resource to carry the uplink resource to transmit data; or if the second uplink carrier initiates a random
  • SR service request
  • RLF link interruption
  • the terminal terminates the random access on the second uplink carrier, and uses the uplink resource to carry the uplink resource to transmit data; or if the second uplink carrier initiates a random
  • the reason for the access is that the number of retransmissions of the RLC layer reaches the threshold on the first uplink carrier, and the terminal terminates the random access on the second uplink carrier, and uses the uplink carrier handover indication to carry the
  • the uplink resource retransmits the data, and the RLC layer retransmission counter is cleared, and the terminal reselects and sends the uplink data on the resource allocated by the
  • the primary process uses the network device to send data for the SPS resource of the second uplink carrier configured by the terminal, and the main process is as shown in FIG. 6 .
  • FIG. 6 A schematic flowchart of a communication method according to another embodiment of the present application.
  • the terminal receives the number of times that the first uplink carrier sends a random access request reaches a threshold or before the first uplink carrier radio link layer control protocol RLC layer retransmission times reaches a threshold, the terminal receives the network device sends The SPS resource of the second uplink carrier.
  • the SPS resource configured by the network device is received.
  • the network device when the terminal determines that the first threshold ⁇ the measurement result of the downlink reference signal ⁇ the second threshold, the network device is notified to configure the SPS resource of the second uplink carrier, and receives the SPS resource from the network device.
  • the SPS resource when the terminal determines that the first threshold ⁇ the measurement result of the downlink reference signal ⁇ the second threshold, the network device is notified to configure the SPS resource of the second uplink carrier, and receives the SPS resource from the network device.
  • the SPS resource when the terminal determines that the first threshold ⁇ the measurement result of the downlink reference signal ⁇ the second threshold, the network device is notified to configure the SPS resource of the second uplink carrier, and receives the SPS resource from the network device.
  • the downlink reference signal may include a synchronization signal and/or channel state information reference signals (CSI-RS), and the terminal further receives a configuration from the network device.
  • the configuration information indicates that the terminal measures the synchronization signal and/or the CSI-RS, and the terminal measures the signal indicated by the configuration information according to the configuration information.
  • CSI-RS channel state information reference signals
  • the configuration information further indicates a measurement object that performs measurement on the synchronization signal and/or the CSI-RS, for example, the measurement object includes a reference signal receiving power. , RSRP), reference signal reception power (RSRQ) and/or signal to interference plus noise ratio (SINR), for example, the configuration information indicates RSRP or RSRQ to the synchronization signal
  • the terminal measures the RSRP or the RSRQ of the synchronization signal
  • the configuration information indicates that the RSRP or the RSRQ of the CSI-RS is measured, and the terminal RSRP of the CSI-RS. Or RSRQ to make measurements.
  • Step 601 The terminal starts the first timer when the terminal sends the data by using the SPS resource on the second uplink carrier.
  • Step 602 Before the first timer expires, whether the terminal receives the ACK feedback sent by the network device
  • the terminal does not receive the ACK feedback of the network device before the first timer expires, triggering a radio link failure (RLF) process; or if the terminal receives before the first timer expires Determining a successful handover to the second uplink carrier by the ACK feedback to the network device, the terminal continues to send uplink data on the second uplink carrier, for example, using the SPS resource or the network device to reallocate The uplink resource sends the uplink data, and the terminal resets the first timer.
  • RLF radio link failure
  • Step 603 The network device determines that the terminal performs uplink carrier switching.
  • the network device When the network device receives the uplink data sent by the terminal from the SPS resource of the second uplink carrier, it may be determined that the terminal has a UL handover, and then sends a corresponding ACK to the terminal, and recovers The previously configured SPS resource.
  • the switch initiates the handover to another uplink carrier to initiate random access or directly uses the SPS resource of another uplink carrier to send uplink data to avoid long-term interruption of communication.
  • FIG. 7 is a schematic structural diagram of a communication system according to another embodiment of the present application.
  • the communication system includes a communication device 71 and a network device 72, and the communication device 71 may be a chip or a circuit in a terminal or a terminal, where the communication is performed.
  • the apparatus may include at least one processor 711, at least one memory 712, and a transceiver 713, the at least one processor 711, the at least one memory 712, and the transceiver 713 being connected to each other by a bus.
  • the at least one processor 711 is a control center of the terminal, and may be a processor or a collective name of multiple processing elements.
  • the processor 711 is a central processing unit (CPU), or the processor 711 can be configured to implement one or more integrated circuits of the terminal performing method in the above embodiments, for example: one or Multiple Application Specific Integrated Circuits (ASICs), one or more digital singnal processors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), or Other programmable logic devices, or discrete gates or transistor logic devices, or discrete hardware components.
  • the at least one processor 711 can perform various processes of the method embodiment of FIG. 4 or FIG. 5 by running or executing a software program or instruction stored in the memory 712 and calling data stored in the memory 712. .
  • the at least one processor 711 can include one or more CPUs, such as CPU0 and CPU1 shown in FIG.
  • the communication device 71 can include multiple processors. Each of these processors can be a single-CPU processor or a multi-CPU processor.
  • a processor herein may refer to one or more devices, circuits, and/or processing cores for processing data, such as computer program instructions.
  • the memory 712 may be a memory or a collective name of a plurality of storage elements for storing code or instruction information, and may also store device type information.
  • the memory 712 can exist independently and be connected to the processor 711 through a communication bus.
  • the memory 712 can also be integrated with the processor 711.
  • the memory 712 is used to store and perform the implementation provided by the embodiment of the present application. Software programs, code, instructions, and/or data of the scheme are controlled and executed by the processor 711.
  • the memory 712 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, or a random access memory (network device dom access memory, RAM) or Other types of dynamic storage devices that store information and instructions, may also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) Or other disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), disk storage media or other magnetic storage devices, or can be used to include or store expectations in the form of instructions or data structures Program code and any other medium that can be accessed by a computer, but is not limited thereto.
  • ROM read-only memory
  • RAM random access memory
  • EEPROM electrically erasable programmable read-only memory
  • CD-ROM compact disc read-only memory
  • optical disc storage including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.
  • the memory 712 can exist independently and be coupled to the processor 711 via a communication bus.
  • the memory 712 can also be integrated with the processor 711.
  • the memory 712 is configured to store a software program that executes the solution of the present application, and is controlled by the processor 711 for execution.
  • the transceiver 713 is configured to communicate with other devices (such as the network device 72) or a communication network, such as an Ethernet, a radio access network (network access device), a wireless local area network (wireless local area). Networks, WLAN), etc.
  • the transceiver 713 may include a receiving unit to implement a receiving function, and a transmitting unit to implement a transmitting function.
  • the above receiving unit (or unit for receiving) is an interface circuit of the communication device 71 for receiving signals from other devices.
  • the receiving unit is an interface circuit for the chip to receive signals from other chips or devices.
  • the above transmitting unit (or unit for transmitting) is an interface circuit of the communication device 71 for transmitting signals to other devices.
  • the transmitting unit is an interface circuit for transmitting signals to other chips or devices.
  • the configuration of the communication device 71 shown in Figure 7 does not constitute a limitation to the communication device 71, which may include more or fewer components than those illustrated, or some components may be combined, or different Parts layout.
  • the communication device 71 may further include a battery, a camera, a Bluetooth module, a global positioning system (GPS) module, and the like, and details are not described herein.
  • GPS global positioning system
  • the communication system illustrated in FIG. 7 can also be applied to the process of the method embodiment of FIG. 4, 5 or 6, for example, the processor 611 can perform the related processing of the embodiment shown in FIG. 4, 5 or 6, the transceiver 613 can perform the transmission process associated with FIG. 4, 5 or 6, as described below.
  • the processor 711 determines that the number of times the random access request is sent by the first uplink carrier reaches a threshold or the number of retransmissions of the RLC layer of the first uplink carrier radio link layer control protocol reaches a threshold.
  • the transceiver 713 receives carrier configuration information sent by the network device 72 of the cell through a broadcast channel or a dedicated channel, for example, the configuration information includes the first uplink carrier and The second uplink carrier.
  • the carrier configuration information further includes downlink carrier information.
  • the first uplink carrier and the second uplink carrier belong to the same cell.
  • the first uplink carrier may be referred to as a PUL carrier
  • the second uplink carrier may be referred to as a secondary uplink carrier or a SUL carrier
  • the first uplink carrier and the second uplink The carrier can have different frequency bands or the same or similar frequency bands.
  • the coverage of the first uplink carrier and the second uplink carrier partially overlap, for example, the first uplink carrier If the frequency band is higher than the frequency band of the second uplink carrier, the coverage of the first uplink carrier is smaller than the coverage of the second uplink carrier, and the coverage of the first uplink carrier is located in the second uplink carrier.
  • the processor 711 may select the first uplink carrier to initiate network access or the second uplink carrier to initiate network access.
  • the frequency band of the first uplink carrier and the frequency band of the second uplink carrier are the same or similar, the coverage ranges of the first uplink carrier and the second uplink carrier are the same or substantially the same.
  • the frequency band of the first uplink carrier is higher than the frequency band of the second uplink carrier, and the range covered by the first uplink carrier is smaller than the range covered by the second uplink carrier.
  • the communication device 71 is located within the coverage of the first uplink carrier, and is connected to the network device 72 by the first uplink carrier, that is, the communication device 71 processes the connection state, when the communication device 71 is When the boundary of the first uplink coverage is moved, the signal of the first uplink carrier is continuously weakened, and the transceiver 713 continuously initiates a random access request or performs on the first uplink.
  • the random access request may be referred to as MSG1.
  • the processor 711 determines that the number of times the random access request is sent by the first uplink carrier reaches a threshold (for example, the threshold is 5 times) or the number of retransmissions of the RLC layer reaches a threshold (for example, a threshold value) on the first uplink carrier. For the maximum number of retransmissions, for example, 6 times).
  • the processor 711 determines that when the number of times the first uplink carrier sends a random access request reaches a threshold, the processor 711 may consider that a random access failure occurs on the first uplink carrier.
  • the processor 711 triggers a handover to the second uplink carrier to communicate with the network device 72.
  • the processor 711 triggering the handover to the second uplink carrier to communicate with the network device 72 includes: the transceiver 713 initiates random access on the second uplink carrier, or the transceiver 713 uses the network device 72 as The semi-persistent scheduling (SPS) resource of the second uplink carrier configured by the communication device 71 transmits data.
  • SPS semi-persistent scheduling
  • the main process is as follows.
  • the transceiver 713 sends a random access request on the second uplink carrier.
  • the transceiver 713 sends the MSG1 on a physical random access channel (PRACH) of the second uplink carrier, and the transceiver 713 sends a random access request on the second uplink carrier (
  • PRACH physical random access channel
  • the power of MSG1 is equal to the power of the last time the transceiver 713 sent a random access request (e.g., MSG1) on the first uplink carrier.
  • the processor 711 determines whether the random access of the second uplink carrier is successful.
  • the network device 72 sends a random access response (RAR) message, also referred to as MSG2, to the transceiver 713 within a response window time.
  • RAR random access response
  • the transceiver 713 After receiving the MSG2, the transceiver 713 sends the MSG3 on the second uplink carrier, and the wireless network temporary identifier (Cell Radio Network Temporary Identifier, C) of the communication device 71 is included in the MSG3. - RNTI) and tells the network device 72 to initiate the purpose of the RA (e.g., to synchronize or send data).
  • the wireless network temporary identifier Cell Radio Network Temporary Identifier, C
  • C Cell Radio Network Temporary Identifier
  • the network device 72 After receiving the MSG3 including the C-RNTI identifier, the network device 72 knows that the uplink carrier switching of the uplink of the communication device 71 occurs, and sends the MSG4 to the communication device 71 if the MSG4 includes The C-RNTI of the communication device 71, the processor 711 determines that the random access (RA) is successful, and if the transceiver 713 is an RA initiated to transmit data, the network device 72 indicates the in the MSG 4 The uplink resource available on the current uplink carrier (ie, the second uplink carrier) of the communication device 71, such as a time-frequency resource, for example, a Physical Uplink Shared Channel (PUSCH) resource; if the transceiver 713 is In order to enter the RA initiated by the synchronization state, the communication device 71 re-enters the synchronization state (step 503). If the C-RNTI of the communication device 71 is not included in the MSG 4, the processor 711 determines that the RA has failed and then
  • the transceiver 713 transmits data on the uplink resource allocated by the MSG4 or re-enters the synchronization state.
  • the transceiver 713 receives an uplink carrier switching indication from the network device 72 in the process of initiating random access by the second uplink carrier, where the uplink carrier switching indication carries An identifier of the second uplink carrier and an uplink resource, where the uplink carrier switching indication is used to instruct the communication device 71 to switch to the second uplink carrier. If the random access fails or the number of times the random access request is sent reaches a threshold, the communication device 71 does not configure a service request (SR) or a service request failure (for example, a transmission chain) on the first uplink carrier.
  • SR service request
  • a service request failure for example, a transmission chain
  • the processor 711 terminates the random access on the second uplink carrier, and uses the uplink resource to carry the uplink resource to transmit data; or, if in the second
  • the reason that the uplink carrier initiates the random access is that the number of retransmissions of the RLC layer reaches the threshold on the first uplink carrier, and the processor 711 terminates the random access on the second uplink carrier, and uses the uplink.
  • the uplink resource carried by the carrier switching indication retransmits the data, and the RLC layer retransmission counter is cleared.
  • the transceiver 713 reselects and sends the uplink data on the resource allocated by the MSG4.
  • the transceiver 713 transmits data using the SPS resource of the second uplink carrier configured by the network device 72 for the communication device 71,
  • the main process is as follows.
  • the transceiver 713 receives the number of times after determining that the number of times the random access request is sent by the first uplink carrier reaches a threshold or before the number of retransmissions of the first uplink carrier radio link layer control protocol RLC layer reaches a threshold The SPS resource of the second uplink carrier sent by the network device 72.
  • the transmitting and receiving The 713 receives the SPS resource configured by the network device 72.
  • the transceiver 713 when the processor 711 determines that the first threshold ⁇ the measurement result of the downlink reference signal ⁇ the second threshold, the transceiver 713 notifies the network device 72 to configure the SPS resource of the second uplink carrier. And receiving the SPS resource from the network device 72.
  • the downlink reference signal may include a synchronization signal and/or channel state information reference signals (CSI-RS), and the transceiver 713 is further from the network device.
  • 72 receiving configuration information, the configuration information instructing the processor 711 to measure a synchronization signal and/or a CSI-RS, and the processor 711 performs measurement on the signal indicated by the configuration information according to the configuration information.
  • CSI-RS channel state information reference signals
  • the configuration information further indicates a measurement object that performs measurement on the synchronization signal and/or the CSI-RS, for example, the measurement object includes a reference signal receiving power. , RSRP), reference signal reception power (RSRQ) and/or signal to interference plus noise ratio (SINR), for example, the configuration information indicates RSRP or RSRQ to the synchronization signal
  • the processor 711 performs measurement on the RSRP or RSRQ of the synchronization signal, and, for example, the configuration information indicates that the RSRP or RSRQ of the CSI-RS is measured, and the processor 711 processes the CSI. - RS RSRP or RSRQ for measurement.
  • This embodiment does not limited.
  • the transceiver 713 starts the first timer when the data is sent by using the SPS resource on the second uplink carrier.
  • the transceiver 713 receives the ACK feedback sent by the network device 72 before the first timer expires.
  • the processor 711 If the transceiver 713 does not receive ACK feedback from the network device 72 before the first timer expires, the processor 711 triggers a radio link failure (RLF) procedure; or if the transceiver 713 Receiving ACK feedback of the network device 72 before the first timer expires, the processor 711 determines to successfully switch to the second uplink carrier, and the transceiver 713 continues to send on the second uplink carrier. Upstream data, for example, using the SPS resource or the uplink resource re-allocated by the network device 72 to send the uplink data, the processor 711 resets the first timer.
  • RLF radio link failure
  • the network device 72 determines that the communication device 71 has an uplink carrier switch.
  • the network device 72 When the network device 72 receives the uplink data sent by the transceiver 713 from the SPS resource of the second uplink carrier, it may be determined that the communication device 71 has a UL handover, and then sends a corresponding ACK to the The communication device 71 is described, and the previously configured SPS resources are reclaimed.
  • FIG. 8 is a schematic flowchart diagram of a communication method according to another embodiment of the present application.
  • Step 801 The network device configures a semi-persistent scheduling SPS resource of the second uplink carrier for the terminal, and sends the SPS resource to the terminal.
  • the method further includes: the network device learning that the terminal enters a connected state or the terminal by using the first uplink carrier Switching from the second uplink carrier to the first uplink carrier; or the network device receiving a notification sent by the terminal when determining that the first threshold ⁇ the downlink reference signal measurement result ⁇ the second threshold, the notification is And the network device is configured to configure the SPS resource of the second uplink carrier for the terminal.
  • Step 802 The network device receives the random access failure of the terminal on the first uplink carrier or the number of times the random access request is sent on the first uplink carrier reaches a threshold or the first uplink carrier radio link layer control protocol RLC layer The data sent by using the SPS resource when the number of retransmissions reaches a threshold, wherein the first uplink carrier and the second uplink carrier belong to the same cell.
  • the network device When the network device receives the data sent by the terminal from the SPS resource, the ACK is sent to the terminal, and the uplink resource of the second uplink carrier is allocated to the terminal.
  • FIG. 8 is a communication method process described by the network device, which is substantially the same as the communication process described on the terminal side corresponding to FIG. 4-5, and details are not described herein again.
  • 9 and 10 are schematic flowcharts of a communication method according to another embodiment of the present application.
  • Step 901 When the terminal determines that the same coverage area is located on the first uplink carrier and the second uplink carrier, the network device is configured to notify the uplink resource of the first uplink carrier and the uplink resource of the second uplink carrier.
  • the first uplink carrier and the second uplink carrier belong to the same cell, and the uplink resource of the first uplink carrier and the uplink resource of the second uplink carrier are different from each other.
  • the terminal performs measurement on the downlink reference reference signal, and when the terminal determines that the third threshold ⁇ the downlink reference signal measurement result ⁇ the fourth threshold, the terminal is determined to be located in the first uplink carrier and the second.
  • the same coverage area (ie, the overlap area) of the uplink carrier, that is, the third and fourth thresholds are used to determine whether the location of the terminal is located in the same coverage area (ie, the overlap area) of the first uplink carrier and the second uplink carrier.
  • the third and fourth thresholds may be received from the network device by using a broadcast channel or a dedicated channel, or the terminal may preset the third and fourth thresholds.
  • the downlink reference signal may include a synchronization signal and/or channel state information reference signals (CSI-RS), and the terminal further receives a configuration from the network device.
  • the configuration information indicates that the terminal measures the synchronization signal and/or the CSI-RS, and the terminal measures the signal indicated by the configuration information according to the configuration information.
  • CSI-RS channel state information reference signals
  • the configuration information further indicates a measurement object that performs measurement on the synchronization signal and/or the CSI-RS, for example, the measurement object includes a reference signal receiving power. , RSRP), reference signal reception power (RSRQ) and/or signal to interference plus noise ratio (SINR), for example, the configuration information indicates RSRP or RSRQ to the synchronization signal
  • the terminal measures the RSRP or the RSRQ of the synchronization signal
  • the configuration information indicates that the RSRP or the RSRQ of the CSI-RS is measured, and the terminal RSRP of the CSI-RS. Or RSRQ to make measurements.
  • Step 902 The terminal receives, by the network device, the uplink resource of the first uplink carrier and the uplink resource of the second uplink carrier for the terminal.
  • the network device configures the first uplink carrier and the second uplink carrier for the terminal by using Radio Resource Control (RRC) signaling.
  • RRC Radio Resource Control
  • the uplink resource such as a time-frequency resource, such as a PUSCH resource, is not in the same time slot on the first uplink carrier and the uplink resource on the second uplink carrier.
  • Step 903 The terminal sends data to the network device on the uplink resource of the first uplink carrier and the uplink resource of the second uplink carrier.
  • the terminal sends data on the uplink resource of the first uplink carrier and the uplink resource on the second uplink carrier, for example, sending the same uplink data.
  • the terminal starts a second timer when the uplink resource of the first uplink carrier and the uplink resource of the second uplink carrier send the data;
  • the terminal does not receive the ACK feedback of the network device before the second timer expires, triggering the radio link failure RLF process; or if the terminal receives the network device before the second timer expires ACK feedback, restarting the second timer and continuing to send subsequent data to the uplink resource of the uplink carrier currently configured by the network device, for example, the network device may currently configure an uplink resource of the first uplink carrier, The uplink resource of the second uplink carrier may also be configured.
  • FIG. 11 is a schematic flowchart diagram of a communication method according to another embodiment of the present application.
  • Step 1101 The network device receives, when the terminal is located in the same coverage area of the first uplink carrier and the second uplink carrier, the notification is used to notify the network device to configure the uplink resource of the first uplink carrier for the terminal. And an uplink resource of the second uplink carrier.
  • the first uplink carrier and the second uplink carrier belong to the same cell, and the uplink resource of the first uplink carrier and the uplink resource of the second uplink carrier are different from each other.
  • Step 1102 The network device configures the uplink resource of the first uplink carrier and the uplink resource of the second uplink carrier for the terminal according to the notification.
  • Step 1103 The network device sends the uplink resource of the first uplink carrier and the uplink resource of the second uplink carrier to the terminal.
  • Step 1104 The network device receives data sent by the terminal on the uplink resource of the first uplink carrier and the uplink resource of the second uplink carrier.
  • the network device starts when the uplink resource of the first uplink carrier and the uplink resource of the second uplink carrier receive the data sent by the terminal. a third timer; after the third timer expires, if the network device determines that the link of one of the uplink carriers of the first uplink carrier and the second uplink carrier is normal, another chain of uplink carriers If the path fails or fails, the network device configures an uplink resource for the normal uplink carrier and sends the uplink resource to the terminal (ie, case 1 in FIG.
  • the network device determines The first uplink carrier and the second uplink-loaded link are both normal and determine that the terminal is located in a boundary area of an uplink carrier with a small coverage area in the first uplink carrier and the second uplink carrier, where The network device terminates the uplink resource of the uplink carrier with a smaller coverage for the terminal, and configures an uplink resource of the uplink carrier with a larger coverage for the terminal (ie, case 2 of FIG. 10)
  • the duration of the third timer is greater than the duration of the second timer
  • the second timer is the uplink resource of the terminal on the first uplink carrier and the The data is started when the data is sent on the uplink resource of the second uplink carrier.
  • FIG. 11 is a communication method process described by the network device, which is substantially the same as the communication process described on the terminal side corresponding to FIG. 9-10, and details are not described herein again.
  • FIG. 12 is a schematic structural diagram of a terminal, and the terminal (for example, a UE) can be applied to the system shown in FIG. 1 to FIG. 3 to implement the corresponding functions of the terminal in the foregoing embodiment.
  • the terminal for example, a UE
  • FIG. 12 refers to the description in the above embodiment.
  • FIG. 12 shows only the main components of the terminal.
  • the terminal 10 includes a processor, a memory, a control circuit, an antenna, and an input and output device.
  • the processor is mainly used for processing communication protocols and communication data, and controlling the entire terminal, executing software programs, and processing data of the software programs.
  • the processor can implement the corresponding functions of the terminal in FIG. 1 to FIG.
  • Memory is primarily used to store software programs and data.
  • the RF circuit is mainly used for the conversion of the baseband signal and the RF signal and the processing of the RF signal.
  • the antenna is mainly used to transmit and receive RF signals in the form of electromagnetic waves.
  • the processor can control and implement the terminal-related transceiving functions of FIGS. 1 through 11 through the radio frequency circuit and the antenna.
  • Input and output devices such as touch screens, display screens, keyboards, etc., are primarily used to receive user input data and output data to the user.
  • the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal, and then sends the radio frequency signal to the outside through the antenna in the form of electromagnetic waves.
  • the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data.
  • FIG. 12 shows only one memory and processor for ease of illustration. In an actual terminal, there may be multiple processors and memories.
  • the memory may also be referred to as a storage medium or a storage device, and the like.
  • the processor may include a baseband processor and a central processing unit, and the baseband processor is mainly used to process communication protocols and communication data, and the central processing unit is mainly used to control and execute the entire user equipment.
  • the processor in FIG. 12 integrates the functions of the baseband processor and the central processing unit.
  • the baseband processor and the central processing unit can also be independent processors and interconnected by technologies such as a bus.
  • the user equipment may include a plurality of baseband processors to accommodate different network standards, and the user equipment may include a plurality of central processors to enhance its processing capabilities, and various components of the user equipment may be connected through various buses.
  • the baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit can also be expressed as a central processing circuit or a central processing chip.
  • the functions of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to implement the baseband processing function.
  • the antenna and control circuit having the transceiving function can be regarded as the transceiving unit 11 of the terminal 10
  • the processor having the processing function can be regarded as the processing unit 12 of the terminal 10.
  • the terminal 10 includes a transceiver unit 11 and a processing unit 12.
  • the transceiver unit can also be referred to as a transceiver, a transceiver, a transceiver, and the like.
  • the device for implementing the receiving function in the transceiver unit 101 can be regarded as a receiving unit, and the device for implementing the sending function in the transceiver unit 101 is regarded as a sending unit, that is, the transceiver unit 11 includes a receiving unit and a sending unit.
  • the receiving unit may also be referred to as a receiver, a transceiver, a receiving circuit, etc.
  • the transmitting unit may be referred to as a transmitter, a transmitter, or a transmitting circuit.
  • FIG. 13 is a block diagram showing the structure of a communication device, which may be the network device 20 of FIGS. 1 and 2.
  • the network device 20 can be used to implement the method described in the foregoing method embodiments. For details, refer to the description in the foregoing method embodiments.
  • the communication device 20 includes one or more processors 21, which may be general purpose processors or special purpose processors or the like.
  • processors 21 can be a baseband processor, or a central processing unit.
  • the baseband processor can be used to process communication protocols and communication data
  • the central processing unit can be used to control communication devices (eg, base stations, baseband chips, DUs, or CUs, etc.), execute software programs, and process data of software programs. .
  • the processor 21 may also include instructions 23 that may be executed on the processor such that the communication device 20 performs the functions of a network device (e.g., a base station) in the method embodiments described above.
  • a network device e.g., a base station
  • the terminal is configured with various thresholds (such as measurement thresholds) and configuration messages (such as access control parameters).
  • communication device 20 may include circuitry that may implement the functions of transmission or reception in the foregoing method embodiments.
  • the communication device 20 may include one or more memories 22 on which the instructions 24 are stored, and the instructions may be executed on the processor, so that the communication device 20 performs the above method embodiment.
  • data may also be stored in the memory. Instructions and/or data can also be stored in the optional processor.
  • the processor and the memory may be provided separately or integrated.
  • the communication device 20 may further include a transceiver 25 and/or an antenna 26.
  • the processor 21 may be referred to as a processing unit that controls a communication device (terminal or base station).
  • the transceiver 25 may be referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., for implementing the transceiving function of the communication device through the antenna 26.
  • the processor and transceiver described in the present application can be implemented in an integrated circuit (IC), an analog IC, a radio frequency integrated circuit RFIC, a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board ( Printed circuit board, PCB), electronic equipment, etc.
  • IC integrated circuit
  • analog IC an analog IC
  • radio frequency integrated circuit RFIC a radio frequency integrated circuit
  • mixed signal IC an application specific integrated circuit
  • ASIC application specific integrated circuit
  • PCB printed circuit board
  • electronic equipment etc.
  • the processor and transceiver can also be fabricated using various 1C process technologies, such as complementary metal oxide semiconductor (CMOS), n-type metal oxide semiconductor (n-metal oxide semiconductor) (n-type metal oxide semiconductor (nMetal-oxide-semiconductor, NMOS), P-type A positive oxide metal oxide semiconductor (PMOS), a Bipolar Junction Transistor (BJT), a bipolar CMOS (BiCMOS), a silicon germanium (SiGe), or a gallium arsenide (GaAs).
  • CMOS complementary metal oxide semiconductor
  • n-metal oxide semiconductor n-type metal oxide semiconductor
  • PMOS P-type A positive oxide metal oxide semiconductor
  • BJT Bipolar Junction Transistor
  • BiCMOS bipolar CMOS
  • SiGe silicon germanium
  • GaAs gallium arsenide
  • the communication device described in this application may be a standalone device or may be part of a larger device.
  • the device can be:
  • the set of ICs may also include storage means for storing data and/or instructions;
  • an ASIC such as a modem (MSM);
  • receivers cellular phones, wireless devices, handsets, mobile units, network devices, etc.
  • the processor 21 can implement the processing functions of the network device shown in FIG. 1-11, and the transceiver 25 can implement the receiving and transmitting functions of the network device shown in FIG.
  • threshold may refer to a threshold (boundary value), or a threshold interval (or threshold range).
  • the threshold-related comparison involved in the present application may be to determine whether the threshold is met, for example, may be greater than the boundary value, less than the boundary value, equal to the boundary value, greater than or equal to the boundary value, less than or equal to the boundary value, or within the threshold interval.
  • each step of the above method may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software.
  • the steps of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method. To avoid repetition, it will not be described in detail here.
  • sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be used in the embodiments of the present application.
  • the implementation process constitutes any qualification.
  • 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 allowed to be divided into one logical function.
  • 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 objectives of the solution of the embodiment.
  • each work permitting unit in each embodiment of the present application 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.
  • This work can be stored in a computer readable storage medium if it is implemented in the form of a software work permit unit and sold or used as a standalone product.
  • the technical solution of the present application 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 at least one processor or at least one computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the method of various embodiments of the present application.
  • 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

Un mode de réalisation de la présente invention concerne un procédé et un dispositif de communication : un terminal détermine que le nombre de fois où une demande d'accès aléatoire est envoyée par une première porteuse de liaison montante atteint un certain seuil ou que le nombre de retransmissions d'une couche de commande de liaison radio (RLC) de la première porteuse de liaison montante atteint un certain seuil ; le terminal déclenche une commutation vers une seconde porteuse de liaison montante pour communiquer avec un dispositif de réseau, la première porteuse de liaison montante et la seconde porteuse de liaison montante appartenant à une même cellule. Au moyen du présent procédé et du dispositif de communication, la prévention du déclenchement d'un processus de RLF est possible.
PCT/CN2018/116063 2017-11-17 2018-11-17 Procédé et dispositif de commande d'accès à un réseau WO2019096285A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201711148463.2A CN109803335B (zh) 2017-11-17 2017-11-17 一种接入网络的控制方法和装置
CN201711148463.2 2017-11-17

Publications (1)

Publication Number Publication Date
WO2019096285A1 true WO2019096285A1 (fr) 2019-05-23

Family

ID=66538933

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/116063 WO2019096285A1 (fr) 2017-11-17 2018-11-17 Procédé et dispositif de commande d'accès à un réseau

Country Status (2)

Country Link
CN (1) CN109803335B (fr)
WO (1) WO2019096285A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111988854A (zh) * 2019-05-24 2020-11-24 中国移动通信有限公司研究院 数据传输方法、装置、相关设备及存储介质
CN113972971A (zh) * 2020-07-23 2022-01-25 中国移动通信集团吉林有限公司 载波切换门限的调节方法和网络设备
CN114424641A (zh) * 2019-09-30 2022-04-29 华为技术有限公司 一种通信方法及装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3698595A4 (fr) 2018-01-11 2020-12-16 Samsung Electronics Co., Ltd. Procédé de détermination de paramètre de décalage de domaine fréquentiel, équipement d'utilisateur (ue), procédé d'accès aléatoire, procédé destiné à la configuration d'informations d'accès aléatoire, dispositif correspondant et support lisible par ordinateur

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102056297A (zh) * 2009-11-02 2011-05-11 大唐移动通信设备有限公司 一种多载波系统中的随机接入方法和设备
CN105490790A (zh) * 2014-10-13 2016-04-13 成都鼎桥通信技术有限公司 载波聚合中辅载波的配置方法和装置
CN105578489A (zh) * 2014-10-17 2016-05-11 成都鼎桥通信技术有限公司 非对称上行载波聚合中辅载波的测量方法及装置
CN105577338A (zh) * 2014-10-17 2016-05-11 成都鼎桥通信技术有限公司 非对称上行载波聚合中主辅载波的切换方法及装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101741710B (zh) * 2008-11-04 2011-12-07 电信科学技术研究院 一种tdd系统载波聚合的上下行配置和接收方法
EP2557852A1 (fr) * 2011-08-10 2013-02-13 Alcatel Lucent Procédé, appareil et programme informatique pour sélectionner des cellules et pour un émetteur/récepteur mobile

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102056297A (zh) * 2009-11-02 2011-05-11 大唐移动通信设备有限公司 一种多载波系统中的随机接入方法和设备
CN105490790A (zh) * 2014-10-13 2016-04-13 成都鼎桥通信技术有限公司 载波聚合中辅载波的配置方法和装置
CN105578489A (zh) * 2014-10-17 2016-05-11 成都鼎桥通信技术有限公司 非对称上行载波聚合中辅载波的测量方法及装置
CN105577338A (zh) * 2014-10-17 2016-05-11 成都鼎桥通信技术有限公司 非对称上行载波聚合中主辅载波的切换方法及装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111988854A (zh) * 2019-05-24 2020-11-24 中国移动通信有限公司研究院 数据传输方法、装置、相关设备及存储介质
CN114424641A (zh) * 2019-09-30 2022-04-29 华为技术有限公司 一种通信方法及装置
CN113972971A (zh) * 2020-07-23 2022-01-25 中国移动通信集团吉林有限公司 载波切换门限的调节方法和网络设备
CN113972971B (zh) * 2020-07-23 2024-03-15 中国移动通信集团吉林有限公司 载波切换门限的调节方法和网络设备

Also Published As

Publication number Publication date
CN109803335B (zh) 2022-09-02
CN109803335A (zh) 2019-05-24

Similar Documents

Publication Publication Date Title
US10925107B2 (en) Fast activation of multi-connectivity utilizing uplink signals
EP4106400A1 (fr) Procédé de basculement et appareil de communication
WO2018171759A1 (fr) Procédé et appareil de transmission d'informations
EP4224796A1 (fr) Procédé et appareil de communication
US9497683B2 (en) Handover method and apparatus
JP2023166438A (ja) 情報送信方法および装置
WO2019096285A1 (fr) Procédé et dispositif de commande d'accès à un réseau
JP2016036175A (ja) 動作周波数の変更を調整する方法および装置
KR20160114081A (ko) D2d 통신들에서의 동작 모드의 스위칭
CN114451063B (zh) 通信方法和通信装置
JP6677331B2 (ja) 端末装置
CN109842915B (zh) 一种通信方法和装置以及系统
WO2020164418A1 (fr) Procédé de mesure, dispositif terminal, et dispositif de réseau
WO2021018283A1 (fr) Procédé de communication et appareil de communication
AU2013389390A1 (en) A wireless device, network nodes and methods therein for handling a device-to-device (D2D) communication during handover in a wireless telecommunications network
JP2019506804A (ja) ネットワーク制御ハンドオーバー及びｕｅ自律的ハンドオーバーのためのハイブリッド解決策
CN109803317B (zh) 一种通信方法和装置
US20230209599A1 (en) Wireless communication method, terminal device and network device
US20210360503A1 (en) Method for radio communication and terminal device
WO2021031012A1 (fr) Procédé et dispositif de transfert intercellulaire
WO2017045177A1 (fr) Procédé de gestion de la mobilité, équipement d'utilisateur, et station de base
WO2021114103A1 (fr) Procédé d'établissement de double connectivité et appareil de communication
TW201927043A (zh) 信號傳輸方法及裝置
WO2024045858A1 (fr) Procédé et appareil de communication
WO2023060585A1 (fr) Procédé de communication sans fil, équipement terminal, et dispositif de réseau

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: 18878544

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18878544

Country of ref document: EP

Kind code of ref document: A1