WO2017084336A1 - Procédé et appareil de transmission de données - Google Patents

Procédé et appareil de transmission de données Download PDF

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Publication number
WO2017084336A1
WO2017084336A1 PCT/CN2016/086553 CN2016086553W WO2017084336A1 WO 2017084336 A1 WO2017084336 A1 WO 2017084336A1 CN 2016086553 W CN2016086553 W CN 2016086553W WO 2017084336 A1 WO2017084336 A1 WO 2017084336A1
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WIPO (PCT)
Prior art keywords
rach
rach resource
terminal
base station
request signaling
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PCT/CN2016/086553
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English (en)
Chinese (zh)
Inventor
李广俊
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华为技术有限公司
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Publication of WO2017084336A1 publication Critical patent/WO2017084336A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]

Definitions

  • the present application relates to the field of communications, and in particular, to a method and an apparatus for transmitting data.
  • MBB Mobile Broadband English abbreviation
  • the base station periodically performs scheduling, and the spectrum resources are fixedly occupied, so that the user performs random access.
  • the protocol stipulates that the maximum period of the RACH is 20 ms, that is, every 20 ms of resources, regardless of whether the user will initiate an access process, the resource will be fixed once. In the general scenario, to ensure the effect of access, the RACH period is set to 10ms.
  • the original intention of the protocol is to protect the random access process, so that the users occupy the network with higher priority resources and synchronize the network.
  • the accumulated bearer throughput of each station is up to 34560Mbps, resulting in a large Waste of resources.
  • the present application provides a method and apparatus for transmitting data, which can improve the utilization of RACH resources.
  • a method of transmitting data comprising:
  • the base station configures a random access channel RACH resource for transmitting data
  • the base station schedules the RACH resource to transmit data to the first terminal
  • the base station sends an uplink grant message to the first terminal, where the uplink grant message includes scheduling information that the base station schedules the RACH resource to transmit data to the first terminal, where the uplink grant message is used to indicate the The first terminal uses the RACH resource to perform data transmission according to the scheduling information.
  • the base station Receiving, by the base station, an uplink data transmission request sent by the first terminal, where the base station configures a random access channel RACH resource for transmitting data, and the base station schedules the RACH resource to transmit data to the first terminal, where the base station sends The first terminal sends an uplink grant message, where the uplink grant message includes scheduling information that the base station schedules the RACH resource to transmit data to the first terminal, where the uplink grant message is used to indicate that the first terminal is configured according to the The scheduling information uses the RACH resource for data transmission. In this way, the first terminal can perform uplink data transmission through the RACH resource, thereby improving the utilization of the RACH resource, thereby improving the throughput of the network traffic.
  • the method further includes:
  • the base station determines, according to the period of transmitting the RACH request signaling, that the RACH resource can be used to transmit the RACH request signaling, and performs RACH request signaling demodulation on the RACH resource, if the RACH request signaling is successfully demodulated. And establishing a connection with the second terminal that initiates the RACH request signaling; or
  • the base station performs demodulation of RACH request signaling on the RACH resource, and if the demodulation RACH request signaling succeeds, establishing a connection with the second terminal that initiates the RACH request signaling; if not, according to the
  • the scheduling information demodulates the cyclic redundancy check code CRC of the data on the RACH resource.
  • the base station transmits data or RACH request signaling according to the indication of the MAC scheduling at the receiving terminal.
  • the RACH request signaling is demodulated first, and if the RACH request signaling is not successfully demodulated, the RACH resource is demodulated.
  • the service priority of the accessing the base station is higher than the service priority of the data sent by the terminal to the base station, and the implementation time can reduce the waiting time of the user access and improve the user experience.
  • the method further includes:
  • the RACH resource is configured to transmit the RACH request signaling period, and the RACH resource is used to transmit the RACH request signaling during the period of the RACH request signaling.
  • the base station is The RACH resource is configured to transmit the RACH request signaling period, so that the base station can configure the period in the actual application scenario, the period duration can be 2s, or even 10s is similar to a large duration, and the RACH resource has more moments. Used to transmit data, improving the utilization of RACH resources.
  • the method further includes:
  • the base station When the base station detects that the interference value of the RACH resource is greater than a preset threshold, the base station cancels the configuration of the RACH resource for transmitting data, and instructs the terminal not to use the RACH resource for data transmission. .
  • the priority of the RACH resource for transmitting the RACH request signaling is not only high, but the RACH resource cannot be interfered too much when it is used to transmit the RACH request signaling. As a result, the RACH request signaling may not be demodulated successfully.
  • the terminal is unable to access the base station, so in the implementation manner, the base station sets an interference threshold for the RACH resource, and if the interference value of the RACH resource is greater than the threshold, the RACH resource is cancelled for transmission.
  • the configuration of the data enables the RACH resource to be used for transmitting signaling, and ensures that the terminal can successfully access the base station when accessing the terminal, thereby improving the user experience.
  • an apparatus for transmitting data having the function of implementing the above method.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the apparatus for transmitting data includes a transmitter, a receiver, and a processor
  • a receiver configured to receive an uplink data transmission request sent by the first terminal
  • a processor configured to configure a random access channel RACH resource for transmitting data
  • the processor is further configured to: schedule the RACH resource to transmit data to the first terminal;
  • a transmitter configured to send an uplink grant message to the first terminal, where the uplink grant message includes scheduling information that the base station schedules the RACH resource to transmit data to the first terminal, where the uplink grant message is used to indicate The first terminal uses the RACH resource to perform data transmission according to the scheduling information.
  • the apparatus for transmitting data includes a receiving module, a processing module, and a sending module;
  • a receiving module configured to receive an uplink data transmission request sent by the first terminal
  • a processing module configured to configure a random access channel RACH resource for transmitting data
  • the processing module is further configured to: schedule the RACH resource to transmit data to the first terminal;
  • a sending module configured to send an uplink grant message to the first terminal, where the uplink grant message includes scheduling information that the base station schedules the RACH resource to transmit data to the first terminal, where the uplink grant message is used to indicate The first terminal uses the RACH resource to perform data transmission according to the scheduling information.
  • FIG. 1 is a schematic diagram of a method for transmitting data provided by the present application
  • FIG. 2 is a schematic diagram of another method for transmitting data provided by the present application.
  • FIG. 3 is a schematic diagram of another method for transmitting data provided by the present application.
  • 4a is a schematic diagram of another method for transmitting data provided by the present application.
  • FIG. 4b is a schematic diagram of another method for transmitting data provided by the present application.
  • 4c is a schematic diagram of another method for transmitting data provided by the present application.
  • FIG. 5 is a schematic structural diagram of an apparatus for transmitting data according to the present application.
  • FIG. 6 is a schematic structural diagram of another apparatus for transmitting data according to the present application.
  • the present application provides a method and apparatus for transmitting data for improving utilization of RACH resources.
  • the present application provides a method for transmitting data, including:
  • the base station receives an uplink data transmission request sent by the first terminal.
  • the uplink data transmission request may be a buffer status report of the first terminal (English name: Buffer Status Report, English abbreviation: BSR).
  • the base station configures a random access channel RACH resource for transmitting data.
  • the mobile terminal needs to establish communication with the base station, it needs to send a message to the base station through the RACH to apply for a signaling channel to the system, and the base station will determine the assigned channel type according to the channel request requirement, which is in the RACH.
  • the message sent on is called the "channel request".
  • the RACH resource has a periodicity, and the RACH resource needs to be scheduled to be used for the RACH request signaling, and the maximum period of the RACH resource being scheduled is 20 ms.
  • the RACH resources are improved. Utilization, in the method for data transmission provided by the present application, configuring the RACH resource may be used to transmit data.
  • the base station schedules the RACH resource to transmit data to the first terminal.
  • the base station After receiving the uplink data transmission request sent by the first terminal, the base station needs to allocate a channel resource to the first terminal, and the base station schedules the RACH because the RACH resource is configured to be used for transmitting data.
  • the resource transmits data to the first terminal to improve utilization of the RACH resource.
  • the base station sends an uplink grant message to the first terminal, where the uplink grant message includes scheduling information that the base station schedules the RACH resource to transmit data to the first terminal, where the uplink grant message is used to indicate The first terminal uses the RACH resource according to the scheduling information Data transmission;
  • the base station After the base station allocates the RACH resource to the first terminal, the base station needs to send an uplink grant message to the first terminal, indicating that the first terminal can perform uplink data transmission.
  • the uplink grant message further includes scheduling information, where the scheduling information includes, in which frequency band on the RACH channel the terminal performs data transmission, and when the base station performs demodulation data on a frequency band on the RACH channel.
  • the information of the interaction is used to indicate that the first terminal uses the RACH resource to perform uplink data transmission, and indicates a time and a frequency band of the first terminal transmitting data on the RACH resource.
  • the base station receives an uplink data transmission request sent by the first terminal, the base station configures a random access channel RACH resource for transmitting data, and the base station schedules the RACH resource to transmit data to the first terminal,
  • the base station sends an uplink grant message to the first terminal, where the uplink grant message includes scheduling information that the base station schedules the RACH resource to transmit data to the first terminal, where the uplink grant message is used to indicate the
  • the first terminal uses the RACH resource to perform data transmission according to the scheduling information. In this way, the first terminal can perform uplink data transmission through the RACH resource, thereby improving the utilization of the RACH resource, thereby improving the throughput of the network traffic.
  • the present application provides another method for transmitting data, including:
  • the base station receives an uplink data transmission request sent by the first terminal.
  • step 101 The details are as described in step 101.
  • the base station configures a random access channel RACH resource for transmitting data.
  • step 102 The details are as described in step 102.
  • the base station schedules the RACH resource to transmit data to the first terminal.
  • the base station Since a base station is connected to multiple terminals, multiple terminals can perform channel request or data transmission through the RACH resource. To avoid interference, the base station first determines the RACH resource before assigning the RACH resource to the first terminal. Whether the RACH resource is occupied, if not occupied, the RACH resource is allocated to the first terminal to transmit data; if the RACH resource is occupied, the base station may allocate other channel resources to the first A terminal transmits data.
  • the base station sends an uplink grant message to the first terminal, where the uplink grant message packet is The scheduling information that the base station schedules the RACH resource to transmit data to the first terminal, where the uplink grant message is used to instruct the first terminal to use the RACH resource to perform data transmission according to the scheduling information;
  • step 104 See step 104 for details.
  • the base station determines, according to a period of transmitting the RACH request signaling, that the RACH resource can be used to transmit RACH request signaling, and performs RACH request signaling demodulation on the RACH resource, if the RACH request message is demodulated. If successful, the connection is established with the second terminal that initiates the RACH request signaling; or the base station performs demodulation of the RACH request signaling on the RACH resource, and if the demodulation RACH request signaling is successful, And the second terminal that initiates the RACH request signaling establishes a connection; if it fails, performs demodulation of the cyclic redundancy check code CRC of the data on the RACH resource according to the scheduling information;
  • the base station cannot determine the content carried by the RACH resource, but in a possible implementation manner of the data transmission method of the present application, the RACH resource specifies a transmission RACH request message in the protocol.
  • the base station may determine, according to the period of transmitting the RACH request signaling, whether the RACH resource can be used to transmit the RACH request signaling at the current time, and if yes, perform demodulation of the RACH request signaling on the RACH resource, if And if the demodulation RACH request signaling is successful, establishing a connection with the second terminal that initiates the RACH request signaling; if not, performing data demodulation on the RACH resource.
  • the base station may set the base station to demodulate the RACH resource according to two demodulation manners, and the base station first performs demodulation of the RACH request signaling on the RACH resource. If the base station successfully demodulates the RACH request signaling, indicating that the second terminal requests access to the base station, the base station allocates channel resources to the second terminal, and establishes a connection with the second terminal; If the base station is unable to demodulate the RACH request signaling, the base station performs data demodulation on the RACH resource, and demodulates the CRC of the data, indicating that the RACH resource carries the first terminal.
  • the data content sent by the base station may acquire the data sent by the first terminal.
  • the base station first performs demodulation of the RACH request signaling on the RACH resource, and if the RACH request signaling cannot be successfully demodulated, the data is demodulated on the RACH resource. In this way, the waiting time for user access is reduced, and the user experience is improved.
  • the present application provides another method for transmitting data, including:
  • the base station receives an uplink data transmission request sent by the first terminal.
  • step 101 The details are as described in step 101.
  • the base station configures a period in which the RACH resource is used to transmit RACH request signaling, where the RACH resource is used to transmit RACH request signaling during a period of the RACH request signaling.
  • the RACH resource is configured to periodically transmit RACH request signaling, and the maximum period is 20 ms, which causes the RACH resources to be frequently scheduled.
  • the base station cancels the maximum cycle configuration of the RACH resource.
  • the base station configures a period for transmitting the RACH request signaling for the RACH resource according to an actual situation, and when the RACH request signaling period is being transmitted, The base station broadcasts the RACH resource for access by the terminal.
  • the period of the RACH request signaling is configurable and can be configured to the second or lower level.
  • the configuration is different for different scenarios: for example, the returning scenario, the configuration period is 2S, the small bandwidth scenario, and the configuration period is 1S.
  • the configuration period is 2S, the home scene, and the configuration period is 10S.
  • the base station configures the RACH resource to transmit data.
  • the base station first determines whether the current time is The periodic time of the non-transmission RACH request signaling, if not, the RACH resource is configured to transmit data, and if so, other channel resources are configured to transmit data.
  • the base station When the base station determines that the RACH resource is not occupied, the base station schedules the RACH resource to transmit data to the first terminal.
  • step 203 The details are as described in step 203.
  • the base station sends an uplink grant message to the first terminal, where the uplink grant message includes scheduling information that the base station schedules the RACH resource to transmit data to the first terminal, where The uplink grant message is used to indicate that the first terminal uses the RACH resource to perform data transmission according to the scheduling information;
  • step 104 See step 104 for details.
  • the base station determines, according to the period of the transmission RACH request signaling, that the current time is the transmission RACH request signaling, the base station performs RACH request signaling demodulation on the RACH resource, if the RACH request signal is demodulated. If successful, the connection is established with the second terminal that initiates the RACH request signaling; or when the base station determines that the current time is the non-transmission RACH request signaling according to the period of the transmission RACH request signaling, the base station Demodulating a cyclic redundancy check code CRC of data for the RACH resource;
  • the base station Since the period in which the RACH resource is used for transmitting the RACH request signaling is configured by the base station, and the base station performs baseband demodulation, the time at which the terminal transmits data is determined, and when the base station performs data demodulation on the RACH resource within a predetermined time, Determining whether the current time is a transmission RACH request signaling, if yes, the base station performs RACH request signaling demodulation on the RACH resource, and if not, the base station performs data demodulation on the RACH resource. .
  • the base station configures a large RACH request signaling period for the RACH resource according to the actual scenario, so that the RACH resource spends more time for transmitting data, thereby improving the utilization of the RACH resource.
  • the present application provides another method for transmitting data, including:
  • the base station When the base station detects that the interference value of the RACH resource is greater than a preset threshold, the base station cancels the configuration of the RACH resource used for transmitting data, and indicates that the terminal does not use the RACH resource. data transmission;
  • the RACH resource may be used by multiple terminals at the same time, used for transmitting data, or used for RACH request signaling initiated, and the frequency bands carrying RACH request signaling and data are adjacent or identical, and the intra-segment RACH
  • a resource is used to transmit different types of information, it will cause overlapping of signal energy, which will inevitably cause mutual interference.
  • the RACH resource interference may be too large to be demodulated by the base station to demodulate the RACH request signaling, causing the second terminal to fail to access.
  • the base station passes the real-time or periodic check.
  • the interference of the RACH resource is measured to obtain an interference value. If the interference value is greater than the preset threshold, the RACH resource is subjected to a large interference, and the base station cancels the RACH resource for transmitting data. And configuring, and instructing, the terminal not to use the RACH resource for data transmission.
  • the RACH request signaling carried by the RACH resource is greatly reduced, and the success rate of the second terminal accessing the base station is improved, thereby improving the user experience.
  • the base station reconfigures the RACH resource for transmitting data, and indicates the first, when the base station detects that the interference value of the RACH resource is less than or equal to the preset threshold.
  • a terminal uses the RACH resource for data transmission;
  • the RACH resource can only wait for the periodic time to be used for the broadcast transmission of the RACH request signaling.
  • the base station detects the RACH resource in real time. If the interference value received by the RACH resource is less than or equal to a preset threshold, the base station reconfigures the RACH resource for transmitting data, and indicates the The terminal uses the RACH resource to perform data transmission, so that the RACH resource is dynamically configured to improve the utilization of the RACH resource and increase the traffic throughput.
  • the scheduling of the RACH resource by the base station may be implemented by using a medium access control layer (English name: Media Access Control, English abbreviation: MAC).
  • a medium access control layer English name: Media Access Control, English abbreviation: MAC.
  • the present application provides an apparatus for scheduling a message, which is used in the foregoing method for implementing the data transmission shown in FIG. 1 to FIG.
  • the receiving module 501 is configured to receive an uplink data transmission request sent by the first terminal.
  • step 101 The details are as described in step 101.
  • the processing module 502 is configured to configure a random access channel RACH resource for transmitting data.
  • step 102 The details are as described in step 102.
  • the processing module 502 is further configured to: schedule the RACH resource to transmit data to the first terminal;
  • step 103 The details are as described in step 103.
  • the sending module 503 is configured to send an uplink grant message to the first terminal, where the uplink authorization is
  • the information includes scheduling information that the base station schedules the RACH resource to transmit data to the first terminal, where the uplink grant message is used to instruct the first terminal to use the RACH resource to perform data transmission according to the scheduling information.
  • step 104 See step 104 for details.
  • processing module 502 is further configured to:
  • the sending module 503 After the sending module 503 sends the uplink grant message to the first terminal, determining, according to the period of transmitting the RACH request signaling, that the RACH resource can be used to transmit the RACH request signaling, and then performing the RACH on the RACH resource. Demodulating the request signaling, if the demodulation RACH request signaling is successful, establishing a connection with the second terminal that initiates the RACH request signaling; or
  • Performing demodulation of the RACH request signaling on the RACH resource if the demodulation RACH request signaling is successful, establishing a connection with the second terminal that initiates the RACH request signaling; if not, performing the RACH resource on the RACH resource Demodulation of the cyclic redundancy check code CRC of the data is performed.
  • step 205 The details are as described in step 205.
  • processing module 502 is further configured to:
  • processing module 502 is specifically configured to:
  • the RACH resource is configured to transmit data.
  • step 303 The details are as described in step 303.
  • processing module 502 is further configured to:
  • the processing module 502 determines that the current time is the transmission RACH request signaling according to the period of the transmission RACH request signaling, the RACH resource is used. Performing demodulation of RACH request signaling, and if the demodulation RACH request signaling is successful, establishing a connection with the second terminal that initiates the RACH request signaling; or
  • the processing module 502 determines that the current time is the non-transmission RACH request signaling according to the period of the transmission RACH request signaling, the solution of the cyclic redundancy check code CRC of the data is performed on the RACH resource according to the scheduling information. Tune.
  • processing module 502 is further configured to:
  • the processing module 502 detects that the interference value of the RACH resource is greater than a preset threshold, canceling the configuration of the RACH resource for transmitting data, and instructing the terminal not to use the RACH resource for data transmission.
  • step 401 The details are as described in step 401.
  • processing module 502 is further configured to:
  • the processing module 502 cancels the configuration of the RACH resource for transmitting data, when the processing module 502 detects that the interference value of the RACH resource is less than or equal to the preset threshold, Reconfiguring the RACH resource for transmitting data, and instructing the first terminal to use the RACH resource for data transmission.
  • processing module 502 is further configured to:
  • step 203 The details are as described in step 203.
  • the present application provides a base station 600 for implementing the functions of the base station in the method for transmitting data.
  • the base station 600 includes a processor 601, a transmitter 602, and a receiving unit.
  • the receiver 603 is configured to implement the function of the sending module 501 in the embodiment of FIG. 5.
  • the processor 601 is configured to implement the functions of the processing module 502 in the embodiment of FIG. 5.
  • the transmitter 602 is configured to implement the function of the sending module 503 in the embodiment of FIG. 5.
  • the processor 401 may be a general-purpose processor, including a central processing unit (CPU), a network processor (Network Processor, NP for short), or a digital signal processor (Digital Signal Processing, Abbreviation: DSP), Application Specific Integrated Circuit (ASIC), Field-Programmable Gate Array (FPGA) or other programmable logic devices.
  • CPU central processing unit
  • NP Network Processor
  • DSP Digital Signal Processing, Abbreviation: DSP
  • ASIC Application Specific Integrated Circuit
  • FPGA Field-Programmable Gate Array
  • the base station 600 may further include: a memory for storing a program.
  • the program can include program code, the program code including computer operating instructions.
  • the memory may include a random access memory (RAM), and may also include a non-volatile memory, such as at least one disk storage.
  • the processor 601 executes program code stored in the memory to implement the above functions.

Abstract

L'invention concerne un procédé de transmission de données comprenant : la réception par une station de base d'une demande de transmission de données de liaison montante envoyée par un premier terminal ; la configuration par la station de base d'une ressource de canal d'accès aléatoire (RACH) pour la transmission des données ; la planification par la station de base de la ressource de RACH vers le premier terminal afin de transmettre les données ; et l'envoi par la station de base d'un message d'autorisation de liaison montante au premier terminal, le message d'autorisation de liaison montante comprenant des informations de planification concernant la planification par la station de base de la ressource de RACH vers le premier terminal afin de transmettre les données, et le message d'autorisation de liaison montante étant utilisé pour donner l'instruction au premier terminal d'effectuer une transmission de données à l'aide de la ressource de RACH conformément aux informations de planification. De cette manière, un premier terminal peut effectuer une transmission de données de liaison montante à l'aide d'une ressource de RACH, ce qui permet d'améliorer le taux d'utilisation de la ressource de RACH et d'améliorer ainsi le débit d'un trafic de réseau.
PCT/CN2016/086553 2015-11-20 2016-06-21 Procédé et appareil de transmission de données WO2017084336A1 (fr)

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