WO2017035937A1 - Procédé et terminal de transmission - Google Patents

Procédé et terminal de transmission Download PDF

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Publication number
WO2017035937A1
WO2017035937A1 PCT/CN2015/093514 CN2015093514W WO2017035937A1 WO 2017035937 A1 WO2017035937 A1 WO 2017035937A1 CN 2015093514 W CN2015093514 W CN 2015093514W WO 2017035937 A1 WO2017035937 A1 WO 2017035937A1
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WO
WIPO (PCT)
Prior art keywords
base station
terminal
average power
resource block
resource
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PCT/CN2015/093514
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English (en)
Chinese (zh)
Inventor
乔梁
李明菊
张晨璐
付婷
邓一伟
Original Assignee
宇龙计算机通信科技(深圳)有限公司
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Publication of WO2017035937A1 publication Critical patent/WO2017035937A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • 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

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a transmission method and terminal.
  • 3GPP 3rd Generation Partnership Project
  • 3GPP 3rd Generation Partnership Project
  • 3GPP is discussing how to use unlicensed spectrum, such as the 2.4 GHz and 5 GHz bands, with the help of licensed spectrum.
  • unlicensed spectrums are currently used primarily in systems such as Wireless-Fidelity (Wi-Fi), Bluetooth, radar, and medical.
  • Wi-Fi Wireless-Fidelity
  • LTE Long Term Evolution
  • Seamless switching between licensed and unlicensed bands For the user, this means a better broadband experience, higher speed, better stability and better mobility.
  • the anti-interference level of the LTE network is ensured, so the uplink and downlink transmissions of the base station and the user do not need to consider whether there are base stations or users in the surrounding data. transmission.
  • access technologies used on unlicensed spectrum such as Wi-Fi technology, have weak anti-interference capabilities. If the LTE network is used on an unlicensed band, regardless of whether other devices are using unlicensed bands, it will cause great interference to the Wi-Fi device.
  • the Wi-Fi device cannot perform data transmission, and can only wait until the LTE service transmission is completed, and can only transmit when the channel is detected to be in an idle state. This results in the LTE network not coexisting with existing networks using unlicensed bands when using unlicensed bands.
  • a technical problem to be solved by embodiments of the present invention is to provide a method and terminal for transmission. To solve the problem that the LTE network cannot coexist with the existing network using the unlicensed band.
  • the first aspect of the embodiments of the present invention provides a method for transmitting, include:
  • the base station is notified to receive the resource allocation notification message returned by the base station, where the resource allocation notification message includes the resource block allocated by the base station to the terminal. information;
  • the resources allocated by the base station are used for service transmission.
  • the method Before calculating the average power of the corresponding frequency bandwidth according to the resource block information, the method further includes:
  • the physical downlink control channel is monitored, and the preset channel busy state threshold is obtained from the scheduling information searched by the specific terminal search space; or
  • the average power of the corresponding frequency bandwidth is calculated according to the resource block information, including:
  • the power of each resource block is accumulated, and the average power of the corresponding frequency bandwidth of each resource block is obtained by dividing the number of the respective resource blocks.
  • the average power of the corresponding frequency bandwidth is calculated according to the resource block information, including:
  • the power of each resource block is accumulated, divided by the number of resource blocks in the entire bandwidth, and the average power of the entire bandwidth is obtained.
  • the process jumps to the step of calculating the average power of the corresponding frequency bandwidth according to the resource block information.
  • a second aspect of the embodiments of the present invention provides a terminal, including:
  • An acquiring unit configured to: if a terminal in a long-term evolution network needs to transmit uplink data by using an unlicensed frequency band, notify a base station to receive a resource allocation notification message returned by the base station, where the resource allocation notification message includes the base station is Resource block information allocated by the terminal;
  • a calculating unit configured to calculate an average power of the corresponding frequency bandwidth according to the resource block information
  • a determining unit configured to determine whether the average power reaches a preset channel busy state threshold
  • a transmitting unit configured to use the resource allocated by the base station to perform service transmission if the average power does not reach a preset channel busy state threshold.
  • the obtaining unit is further configured to:
  • the physical downlink control channel is monitored, and the preset channel busy state threshold is obtained from the scheduling information searched by the specific terminal search space; or
  • the calculating unit calculates an average power of the corresponding frequency bandwidth according to the resource block information, specifically for:
  • the power of each resource block is accumulated, and the average power of the corresponding frequency bandwidth of each resource block is obtained by dividing the number of the respective resource blocks.
  • the calculating unit calculates an average power of the corresponding frequency bandwidth according to the resource block information, specifically for:
  • the power of each resource block is accumulated, divided by the number of resource blocks in the entire bandwidth, and the average power of the entire bandwidth is obtained.
  • the calculating unit is further configured to perform the step of calculating an average power of the corresponding frequency bandwidth according to the resource block information, if the average power reaches a preset channel busy state threshold.
  • the terminal with the uplink data transmission requirement informs the base station of its demand, it acquires the resources allocated by the base station, and calculates the average power of the corresponding frequency band bandwidth according to the allocated resources, only when the average power does not reach the preset channel busy state threshold.
  • the resource allocated by the base station is used for service transmission, and the LBT detection is performed according to the resource information allocated by the base station in the LTE network, thereby avoiding interference to other systems using the unlicensed frequency band, so that the LTE network can be It is compatible with existing systems using unlicensed frequency bands, which facilitates the use of unlicensed frequency bands by terminals in LTE networks, providing users with a higher speed and more stable service transmission experience.
  • FIG. 1 is a schematic flow chart of a first embodiment of a method for transmitting according to the present invention
  • FIG. 2 is a schematic flow chart of a second embodiment of a method for transmitting according to the present invention.
  • FIG. 3 is a schematic flow chart of a third embodiment of a method for transmitting according to the present invention.
  • FIG. 4 is a schematic diagram showing the composition of a first embodiment of the terminal of the present invention.
  • the embodiment of the present invention can be used for an LTE assisted access (LAA) system, which can fully utilize unlicensed frequency bands to provide users with a better broadband experience, higher speed, better stability, and more. Good mobility and good compatibility with existing systems that use unlicensed bands.
  • LAA LTE assisted access
  • FIG. 1 is a schematic flowchart of a first embodiment of a method for transmitting according to the present invention.
  • the method includes the following steps:
  • the resource allocation notification message includes resource block information allocated by the base station to the terminal.
  • step S101 may refer to the process of requesting the uplink transmission by the terminal:
  • the terminal requests the uplink resource from the base station, and the terminal passes the uplink control information (Uplink Control Information, UCI for short) in the Physical Uplink Control CHannel (PUCCH) according to the configuration of the upper layer according to a certain period and the subframe position.
  • uplink control information Uplink Control Information, UCI for short
  • PUCCH Physical Uplink Control CHannel
  • SR Scheduling Request
  • C-RNTI Cell Radio Network Temporary Identifier
  • the base station After receiving the SR information, the base station sends an uplink grant authorization (UL grant), and first allocates a small amount of resources to the terminal for use.
  • the terminal uploads the Buffer Status Reports (BSR) signaling, and tells the base station the amount of data to be transmitted by the base station.
  • BSR Buffer Status Reports
  • the base station After receiving the BSR signaling reported by the terminal, the base station according to the sounding reference signal (Sounding Reference Signal, reported by the terminal)
  • SRS Sounding Reference Signal
  • a comprehensive analysis such as SRS and existing resources of the base station determines whether to allocate resources to the terminal. If the condition does not satisfy the allocation of the resource to the terminal, the terminal re-initiates the random access network (RACH) after failing to upload the SR multiple times.
  • RACH random access network
  • the base station After determining that the terminal meets the resource allocation requirement, the base station allocates resources to the terminal, and the base station also needs to allocate the result, including a physical resource block (Physical Resource Block, PRB) and a modulation and coding scheme (Modulation and Coding Scheme, The abbreviation MCS) tells the terminal to determine the location where the terminal uploads data and the modulation and coding format used.
  • PRB Physical Resource Block
  • MCS Modulation and Coding Scheme
  • the terminal listens to the Physical Downlink Control Channel (PDCCH) to find possible uplink transmission resource allocation, and obtains public information from the common search space. Searching for the scheduling information about itself from the specific terminal search space (UE specific search space) and the preset channel busy for the terminal to perform the Listening Before Talk (LBT) mechanism to detect the allocated resources. Free state threshold.
  • PDCCH Physical Downlink Control Channel
  • the preset channel busy state threshold value may be set by the device manufacturer at the time of leaving the device, or may be provided by the user, or may be provided by the user, and may be customized by the user, which is not limited in the embodiment of the present invention.
  • the preset channel busy state threshold may be set to -62 dBm.
  • the resource block information includes quantity information and location information of the resource blocks allocated by the base station for the terminal, and the location information of the resource blocks can be used to determine the corresponding frequency bandwidth, and the quantity information and each The power of the resource can be calculated to obtain the average power of the corresponding bandwidth.
  • step S103 Determine whether the average power reaches a preset channel busy state threshold. If no, step S104 is performed. If yes, the resources allocated by the base station are not used for service transmission within a preset time.
  • S104 Perform service transmission by using resources allocated by the base station.
  • the terminal when the average power reaches a preset channel busy state threshold, the current channel is in a busy state, and other devices are currently using the channel and the resources, so the terminal continues The continued use of the channel and the resources will cause conflicts and interferences to the services of other devices. Therefore, in this embodiment, the terminal cannot use the resources allocated by the base station for service transmission within a preset time, that is, the channel transmission cannot be occupied. Business data. Certainly, after a preset time or a preset time, the terminal may calculate the average power of the corresponding band broadband again and compare it. When the channel is determined to be in an idle state, the channel may be used for service transmission.
  • the terminal with the uplink data transmission requirement informs the base station of its demand, it acquires the resources allocated by the base station, and calculates the average power of the corresponding frequency band bandwidth according to the allocated resources, only when the average power does not reach the preset channel busy state threshold.
  • the resource allocated by the base station is used for service transmission, and the LBT detection is performed according to the resource information allocated by the base station in the LTE network, thereby avoiding interference to other systems using the unlicensed frequency band, so that the LTE network can be It is compatible with existing systems using unlicensed frequency bands, which facilitates the use of unlicensed frequency bands by terminals in LTE networks, providing users with a higher speed and more stable service transmission experience.
  • FIG. 2 is a schematic flowchart of a second embodiment of a method for transmitting according to the present invention.
  • the method includes the following steps:
  • the resource allocation notification message includes resource block information allocated by the base station to the terminal.
  • the terminal may receive the radio resource control signaling sent by the base station, and obtain the preset channel busy state threshold from the radio resource control signaling group.
  • step S204 Determine whether the average power reaches a preset channel busy state threshold. If no, step S205 is performed, and if yes, the process goes to step S203.
  • the power of each resource block can be monitored in real time, and the average power of the corresponding frequency bandwidth can be calculated, and the calculation can be started after the preset time, which is not limited in the embodiment of the present invention.
  • the power of each resource block may change or may not change. If the average power of the multiple calculations has not changed for the power constant, the channel is always occupied. Terminals cannot use these resource blocks for service transmission. If the transmission needs of the terminal or The transmission of the service is of high importance, and the transmission needs to be completed urgently. After the terminal performs the calculation of the preset number of times, for example, the terminal determines that the average bandwidth of the existing allocated resource is always higher than the preset channel busy state threshold.
  • the terminal can re-initiate the resource allocation request to the base station at this time, and use the method described in the embodiment of the present invention to determine whether the re-allocated resources are freely available, and use the resources re-allocated by the base station to complete the service transmission when available;
  • the resource allocation request may carry the identification information of the service importance, so that the base station directly schedules the currently idle resource to the terminal for direct use, and quickly completes the service transmission.
  • S205 Perform service transmission by using resources allocated by the base station.
  • the channel busy state threshold value preset by the base station is configured in the scheduling information of the specific terminal search space, and the terminal may obtain and use the threshold value to compare with the calculated average power, without adding extra The signaling overhead; and when the average power reaches the preset channel busy state threshold, the resource allocated by the base station is not used for service transmission, and interference with other devices using the unlicensed band can be avoided, and the calculation continues.
  • the average power when the average power meets the requirements, uses the resources allocated by the base station to perform service transmission, and completes its own service requirements.
  • FIG. 3 is a schematic flowchart of a third embodiment of a method for transmitting according to the present invention.
  • the method includes the following steps:
  • the resource allocation notification message includes resource block information allocated by the base station to the terminal.
  • the terminal may also monitor the physical downlink control channel, and obtain the preset channel busy state threshold from the scheduling information searched by the specific terminal search space.
  • step S303 Determine whether the resource blocks allocated by the base station to the terminal are continuous. If yes, go to step S304, otherwise go to step S305.
  • a total of 10 consecutive resource blocks are allocated from 1 to 10, and when the resource blocks allocated by the base station to the terminal are resource blocks of 3, 4, and 5, the calculation of the average power only needs to acquire the resource blocks of 3, 4, and 5 respectively.
  • the power, and the summation sum divided by the number of resource blocks 3 can be. This can further improve the speed and accuracy of the average power calculation, and will not interfere with the result due to the information of other unallocated resource blocks, which can further improve the spectrum utilization.
  • the average power can be calculated to obtain the power of the resource blocks of 1-10, respectively. And summing the sum by dividing the number of resource blocks by 10 to obtain the average power of the entire bandwidth.
  • step S306. Determine whether the average power reaches a preset channel busy state threshold. If no, step S307 is performed, and if yes, the process goes to step S303.
  • the terminal when calculating the average power used for comparing with the preset channel busy state threshold, the terminal may perform different calculations according to the continuity of the allocated resource blocks, and when the allocated resource blocks are consecutive Only the power of consecutive resource blocks is summed and averaged by the number of consecutive resource blocks, which can improve the accuracy and computational efficiency of the calculation results, and is beneficial to improving the utilization efficiency of the spectrum resources.
  • the terminal includes:
  • the obtaining unit 100 is configured to: if the terminal in the long-term evolution network needs to use the unlicensed frequency band to transmit the uplink data, notify the base station to receive the resource allocation notification message returned by the base station, where the resource allocation notification message includes the base station as the Resource block information allocated by the terminal;
  • the calculating unit 200 is configured to calculate an average power of the corresponding frequency bandwidth according to the resource block information
  • the determining unit 300 is configured to determine whether the average power reaches a preset channel busy state threshold
  • the transmitting unit 400 is configured to use the resources allocated by the base station to perform service transmission if the average power does not reach a preset channel busy state threshold.
  • the obtaining unit 100 is further configured to:
  • the calculating unit 200 calculates an average power of the corresponding frequency bandwidth according to the resource block information, specifically, to:
  • the power of each resource block is accumulated, and the average power of the corresponding frequency bandwidth of each resource block is obtained by dividing the number of the respective resource blocks.
  • the calculating unit 200 calculates an average power of the corresponding frequency bandwidth according to the resource block information, specifically, to:
  • the power of each resource block is accumulated, divided by the number of resource blocks in the entire bandwidth, and the average power of the entire bandwidth is obtained.
  • the foregoing obtaining unit 100, the calculating unit 200, the determining unit 300, and the transmitting unit 400 may exist independently or may be integrated.
  • the obtaining unit 100, the calculating unit 200, the determining unit 300, or the transmitting unit 400 may be independent of the processing of the terminal in the form of hardware.
  • the device is separately provided, and the setting form may be in the form of a microprocessor; it may also be embedded in the processor of the terminal in hardware form, or may be stored in the memory of the terminal in software to facilitate the processor of the terminal.
  • the operations corresponding to the above acquisition unit 100, calculation unit 200, determination unit 300, and transmission unit 400 are invoked.
  • the obtaining unit 100 and the transmitting unit 400 can also be used as an interface circuit of the terminal, and can be integrated with the computing unit 200 or the determining unit 300, or can be independently set.
  • the determining unit 200 may be a processor of the terminal, and the functions of the obtaining unit 100, the calculating unit 200, and the transmitting unit 400 may be embedded.
  • the processor it can also be set separately from the processor, or can be stored in the memory in the form of software, and the function is called by the processor.
  • the embodiment of the invention does not impose any limitation.
  • the above processor may be a central processing unit (CPU), a microprocessor, a single chip microcomputer, or the like.
  • each embodiment in the present specification is described in a progressive manner, and each embodiment focuses on a difference from other embodiments, and the same similar parts between the various embodiments. You can refer to each other.
  • the description is relatively simple, and the relevant parts can be referred to the description of the method embodiment.
  • the present invention has the following advantages:
  • the terminal with the uplink data transmission requirement informs the base station of its demand, it acquires the resources allocated by the base station, and calculates the average power of the corresponding frequency band bandwidth according to the allocated resources, only when the average power does not reach the preset channel busy state threshold.
  • the resource allocated by the base station is used for service transmission, and the LBT detection is performed according to the resource information allocated by the base station in the LTE network, thereby avoiding interference to other systems using the unlicensed frequency band, so that the LTE network can be It is compatible with existing systems using unlicensed frequency bands, which facilitates the use of unlicensed frequency bands by terminals in LTE networks, providing users with a higher speed and more stable service transmission experience.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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

Abstract

L'invention concerne un procédé de transmission, comportant les étapes consistant: si un terminal dans un réseau d'évolution à long terme a besoin d'utiliser une bande de fréquences non autorisée pour émettre des données en liaison montante, à informer une station de base et à recevoir un message d'annonce d'attribution de ressources renvoyé par la station de base, le message d'annonce d'attribution de ressources contenant des informations de blocs de ressources attribués par la station de base au terminal; à calculer une puissance moyenne de la bande passante correspondante de fréquences d'après les informations de blocs de ressources; à déterminer si la puissance moyenne atteint une valeur seuil prédéfinie d'état occupé/inoccupé de canal; et si la puissance moyenne n'atteint pas la valeur seuil prédéfinie d'état occupé/inoccupé de canal, à utiliser une ressource attribuée par la station de base pour transmettre un service. L'invention concerne également un terminal. Au moyen de la présente invention, la compatibilité entre un réseau LTE et un réseau existant utilisant une bande de fréquences non autorisée peut être réalisée.
PCT/CN2015/093514 2015-08-28 2015-10-31 Procédé et terminal de transmission WO2017035937A1 (fr)

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CN201510542579.9A CN105101439B (zh) 2015-08-28 2015-08-28 一种传输的方法及终端
CN201510542579.9 2015-08-28

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CN111556532A (zh) * 2020-04-22 2020-08-18 陕西天基通信科技有限责任公司 一种基于上行rb分析的5g智能室分方法

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