WO2017107195A1 - Procédé, appareil et station de base pour une programmation de données dans un système lte-tdd - Google Patents

Procédé, appareil et station de base pour une programmation de données dans un système lte-tdd Download PDF

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Publication number
WO2017107195A1
WO2017107195A1 PCT/CN2015/098974 CN2015098974W WO2017107195A1 WO 2017107195 A1 WO2017107195 A1 WO 2017107195A1 CN 2015098974 W CN2015098974 W CN 2015098974W WO 2017107195 A1 WO2017107195 A1 WO 2017107195A1
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WIPO (PCT)
Prior art keywords
base station
data
uplink
resource allocation
subframe
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PCT/CN2015/098974
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English (en)
Chinese (zh)
Inventor
鲁志兵
胡军
张庆利
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海能达通信股份有限公司
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Application filed by 海能达通信股份有限公司 filed Critical 海能达通信股份有限公司
Priority to PCT/CN2015/098974 priority Critical patent/WO2017107195A1/fr
Publication of WO2017107195A1 publication Critical patent/WO2017107195A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present invention relates to the field of LTE communication technologies, and in particular, to a data scheduling method, apparatus, and base station in an LTE-TDD system.
  • LTE Long Term Evolution
  • UMTS Universal Mobile Telecommunications System
  • 3GPP The 3rd Generation Partnership Project
  • LTE-TDD is an LTE system in Time Division Duplexing mode. Since the uplink and downlink channels occupy different time slots of the same frequency band in the LTE-TDD system, in order to ensure accurate reception of uplink and downlink frames, the system requires high synchronization between the terminal and the base station.
  • the base stations need to achieve ultra-long coverage.
  • the ultra-long-range coverage in the LTE-TDD system when the time advance TA of the terminal UE is long, the downlink data may not be received yet and the UE sends the uplink data in advance. Case. In this case, the uplink data sent in advance interferes with the downlink data that has not been received.
  • the present invention provides a data transmission method, apparatus, and base station in an LTE-TDD system, which can effectively avoid interference of uplink data to downlink data in an LTE-TDD system.
  • the present invention provides a data scheduling method in an LTE-TDD system, the method comprising:
  • the base station performs resource allocation for the first terminal UE, where the resource allocation includes blanking a preset number of uplink subframes after the special subframe, and the first UE is located outside the preset distance range of the base station;
  • the base station Based on the result of the resource allocation, the base station schedules uplink data from the first UE.
  • the preset number is specifically one.
  • the method further includes:
  • the base station determines whether the uplink data returned by the first UE for the downlink data occupies the uplink subframe that is blanked, and determines whether to The first UE sends the downlink data.
  • the method further includes:
  • the base station Before the retransmission instruction is sent to the first UE, the base station determines whether the data retransmitted by the first UE for the retransmission instruction occupies the uplink subframe that is blanked, and determines according to the determination result. Whether to send a retransmission instruction to the first UE.
  • the method further includes:
  • the base station If the retransmitted data occupies the uplink subframe that is blanked, the base station sends an ACK response to the first UE.
  • the present invention also provides a data scheduling apparatus in an LTE-TDD system, the apparatus comprising:
  • An allocating module configured to perform resource allocation for the first terminal UE, where the resource allocation includes blanking a preset number of uplink subframes after the special subframe, where the first UE is located outside a preset distance range of the base station ;
  • a scheduling module configured to schedule uplink data from the first UE based on a result of the resource allocation.
  • the preset number is specifically one.
  • the device further comprises:
  • a first determining module configured to determine, before sending the downlink data to the first UE, whether the uplink data returned by the first UE for the downlink data occupies the uplink subframe that is blanked;
  • the first determining module is configured to determine, according to the determination result, whether to send the downlink data to the first UE.
  • the device further comprises:
  • a second determining module configured to determine, before sending the retransmission instruction to the first UE, whether the data retransmitted by the first UE for the retransmission instruction occupies the uplink subframe that is blanked;
  • a second determining module configured to determine, according to the determination result, whether to send a retransmission instruction to the first UE.
  • the device further comprises:
  • the sending module is configured to send an ACK response to the first UE, if the determining result of the second determining module is yes.
  • the invention also provides a data scheduling base station in an LTE-TDD system, the base station comprising a memory and a processor,
  • the memory is configured to store program code and transmit the program code to the processor
  • the processor is configured to: perform resource allocation for the first terminal UE according to the instruction in the program code, where the resource allocation includes blanking a preset number of uplink subframes after the special subframe, where the The UE is located outside the preset distance range of the base station; and the uplink data from the first UE is scheduled based on the resource allocation.
  • the processor is further configured to: before sending the downlink data to the first UE, determining whether the uplink data returned by the first UE for the downlink data occupies the uplink subframe that is blanked, And determining, according to the determination result, whether the downlink data is sent to the first UE.
  • the processor is further configured to: before sending a retransmission instruction to the first UE, determining whether data retransmitted by the first UE for the retransmission instruction occupies the uplink sub-empty And determining, according to the judgment result, whether to send a retransmission instruction to the first UE.
  • the processor is further configured to send an ACK response to the first UE when the retransmitted data occupies the uplink subframe that is blanked.
  • the base station performs resource allocation for the first terminal UE, where the resource allocation includes blanking a preset number of uplink subframes after the special subframe; the first UE Located outside the preset distance range of the base station; based on the resource allocation, the base station schedules uplink data from the first UE.
  • the present invention since the time slot extended by the special subframe between the downlink subframe and the uplink subframe of the first UE is extended when the base station allocates resources, the present invention can largely avoid the transmission of the terminal at a very long distance in advance.
  • the uplink data causes interference to the previous downlink subframe.
  • the base station since the base station schedules data based on the result of resource allocation, the base station can accommodate a longer time advance by not scheduling the preset number of uplink subframes after the special subframe from the terminal. TA, to achieve the purpose of supporting ultra-long distance coverage.
  • the invention can largely prevent the uplink data sent by the terminal in the super long distance from causing interference to the previous downlink subframe.
  • FIG. 1 is a flowchart of a data transmission method in an LTE-TDD system according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a comparison before and after a special subframe is extended according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a data transmission apparatus in an LTE-TDD system according to an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of a data transmission base station in an LTE-TDD system according to an embodiment of the present invention.
  • the embodiment of the present invention can be applied to an LTE-TDD system with ultra-long-distance coverage.
  • the terminal with a very long distance (hereinafter referred to as the first terminal UE) has a long time advance, which may cause the first UE to complete the reception.
  • the uplink data is sent in advance, so that the uplink data sent in advance may interfere with the downlink subframe that was not successfully received.
  • the base station when the base station allocates resources for the terminal at a very long distance, the base station blanks the preset number of uplink subframes after the special subframe, that is, extends the time slot occupied by the special subframe.
  • the base station of the present invention does not schedule the preset number of uplink subframes after the special subframe from the terminal, the preset number of uplink subframes after the special subframe is blanked, that is, when the special subframe is occupied.
  • the gap enables the system to accommodate a longer timing advance TA for the purpose of supporting ultra-long range coverage.
  • the embodiment of the present invention can largely prevent the first UE from transmitting in advance.
  • the uplink data causes interference to the previous downlink subframe.
  • the terminal may be a walkie-talkie, but is not limited thereto.
  • An embodiment of the present invention provides a data scheduling method in an LTE-TDD system.
  • FIG. 1 it is a flowchart of a data scheduling method in an LTE-TDD system according to an embodiment of the present disclosure, where the method includes:
  • the base station performs resource allocation for the first terminal UE, where the resource allocation includes blanking a preset number of uplink subframes after the special subframe, where the first UE is located outside a preset distance range of the base station.
  • S102 The base station schedules uplink data from the first UE according to the result of the resource allocation.
  • the base station when a base station allocates resources for a terminal within its coverage radius, the base station allocates a special subframe allocated to the time domain resource located outside the preset distance range of the base station.
  • the specific implementation manner is: blanking a preset number of uplink subframes after a special subframe, so as to extend the special subframe.
  • the first UE in the embodiment of the present invention generally includes a terminal located 100 km away from the base station, according to the current LTE standard.
  • the resource allocation manner of the base station is unchanged for the terminal located within the preset distance range of the base station, and complies with the current LTE standard.
  • the base station receives the preset number of uplink subframes after the special subframe in the resource allocated to the first UE, and the base station receives the When the uplink data of the UE is used, the preset number of uplink subframes that are located after the special subframe in the uplink data are not scheduled, thereby avoiding waste of resources.
  • the base station when the base station allocates the PUCCH resource of the physical uplink control channel to the first UE, the base station also needs to blank a preset number of uplink subframes after the special subframe in the resource.
  • the base station when the base station performs resource allocation for the first UE, only the first subframe after the special subframe is used, according to the current ultra-long-range coverage requirement of the LTE-TDD system.
  • the uplink subframes are blanked, and the special subframe is extended by 1 ms. Compared with the farthest coverage distance supported by the current LTE standard protocol, it is increased by about 150 km, and the embodiment of the present invention can support the farthest coverage distance of about 260 km.
  • the first uplink subframe after the special subframe is blanked, and the interference of the uplink and downlink data of the terminal located within 260 km can be effectively avoided.
  • multiple consecutive uplink subframes after a special subframe may be blanked.
  • the special subframe is extended by several milliseconds to enable coverage over longer distances (greater than 260 km).
  • FIG. 2 is a schematic diagram of a comparison before and after a special subframe is extended.
  • the special subframe Before the special subframe is extended, only the time slot in sf1 is occupied, and the first uplink subframe sf2 after the special subframe is set. Empty, so that the special subframe occupies the slots in sf1 and sf2, which is equivalent to extending the original special subframe.
  • the base station When the base station allocates resources to the first UE, the preset number of uplink subframes after the special subframe is blanked. Therefore, before transmitting the downlink data to the first UE, the base station first determines that the first UE is targeted. Whether the uplink data returned by the downlink data to be transmitted occupies the uplink subframe that is blanked. The base station determines, according to the determination result, whether the downlink data is actually sent to the first UE.
  • the base station determines that the uplink data returned by the first UE for the downlink data to be sent just occupies the nulled uplink subframe, the base station is blanked from the first UE. The uplink subframe is not scheduled, so the base station does not send the downlink data, thereby avoiding waste of resources.
  • the base station first determines that the first UE retransmits the retransmission command before sending a retransmission instruction to the first UE. Whether the data exactly occupies the uplink subframe that is blanked. The base station determines, according to the determination result, whether to send a retransmission instruction to the first UE at this time.
  • the base station determines that the data retransmitted by the first UE for the retransmission instruction just occupies the nulled uplink subframe, the base station is configured to blank the uplink from the first UE. The subframe is not scheduled, so the base station does not send the retransmission command at this time, thereby avoiding waste of resources.
  • the base station in response to the first UE transmitting data to the base station, the base station may return an ACK response message to the first UE at this time. Specifically, the base station may select a suitable timing to send a retransmission instruction to the first UE, to prevent the data retransmitted by the first UE from occupying the nulled uplink subframe.
  • the base station performs resource allocation for the first terminal UE, where the resource allocation includes blanking a preset number of uplink subframes after the special subframe, where the The UE is located outside the preset distance range of the base station; and based on the resource allocation, the base station schedules uplink data from the first UE.
  • the base station allocates resources for a terminal at a very long distance
  • the base station in the embodiment of the present invention blanks a preset number of uplink subframes after the special subframe, that is, the base station is extended. The time slot occupied by the special subframe.
  • the present invention can largely avoid the transmission of the terminal at a very long distance in advance.
  • the uplink data causes interference to the previous downlink subframe.
  • the base station schedules data based on the result of resource allocation, the base station can accommodate a longer time advance by not scheduling the preset number of uplink subframes after the special subframe from the terminal. TA, to achieve the purpose of supporting ultra-long distance coverage.
  • the data scheduling method in the LTE-TDD system provided by the embodiment of the present invention can largely prevent the uplink data sent by the terminal in the far-distance distance from causing interference to the previous downlink subframe.
  • the embodiment of the present invention further provides a data scheduling device in an LTE-TDD system.
  • FIG. 3 it is a schematic structural diagram of a data scheduling device in an LTE-TDD system according to an embodiment of the present disclosure, where the device includes:
  • the allocating module 301 is configured to perform resource allocation for the first terminal UE, where the resource allocation includes blanking a preset number of uplink subframes after the special subframe, where the first UE is located in a preset distance range of the base station. outer;
  • the scheduling module 302 is configured to schedule uplink data from the first UE based on the result of the resource allocation.
  • the base station when the base station performs resource allocation, the preset number of uplink subframes after the special subframe in the resource allocated to the first UE is blanked, so the base station receives the When the uplink data of the first UE is used, the first number of uplink subframes that are located after the special subframe in the uplink data are not scheduled, thereby avoiding waste of resources.
  • the embodiment of the present invention when the base station performs resource allocation for the first UE, only the special subframe is The first uplink subframe is blanked, and the special subframe is extended by 1 ms. Compared with the farthest coverage distance supported by the current LTE standard protocol, it is increased by about 150 km, and the embodiment of the present invention can support the farthest coverage distance of about 260 km. That is to say, the embodiment of the present invention can effectively avoid interference of uplink and downlink data of a terminal located within 260 km.
  • the device may further include:
  • a first determining module configured to determine the first before sending downlink data to the first UE Whether the uplink data returned by the UE for the downlink data occupies the uplink subframe that is blanked;
  • the first determining module is configured to determine, according to the determination result, whether to send the downlink data to the first UE.
  • the apparatus may further include:
  • a second determining module configured to determine, before sending the retransmission instruction to the first UE, whether the data retransmitted by the first UE for the retransmission instruction occupies the uplink subframe that is blanked;
  • a second determining module configured to determine, according to the determination result, whether to send a retransmission instruction to the first UE.
  • the device may further include:
  • the sending module is configured to send an ACK response to the first UE, if the determining result of the second determining module is yes.
  • the data scheduling apparatus in the LTE-TDD system can implement the following functions: performing resource allocation for the first terminal UE, where the resource allocation includes blanking a preset number of uplink subframes after the special subframe, The first UE is located outside the preset distance range of the base station; and the uplink data from the first UE is scheduled based on the resource allocation.
  • the base station allocates resources for the terminal at a very long distance
  • the base station in the embodiment of the present invention sets a preset number of uplink subframes after the special subframe to be empty, that is, extends the time slot occupied by the special subframe.
  • the present invention can largely avoid the transmission of the terminal at a very long distance in advance.
  • the uplink data causes interference to the previous downlink subframe.
  • the base station schedules data based on the result of resource allocation, the base station can accommodate a longer time advance by not scheduling the preset number of uplink subframes after the special subframe from the terminal. TA, to achieve the purpose of supporting ultra-long distance coverage.
  • the data scheduling apparatus in the LTE-TDD system provided by the embodiment of the present invention can largely prevent the uplink data sent by the terminal in the far-distance distance from causing interference to the previous downlink subframe.
  • the present invention also provides a schematic structural diagram of a data scheduling base station in an LTE-TDD system, as shown in FIG. 4, wherein the base station includes at least one memory 401 and at least one processor 402, and further includes at least one network interface 403.
  • the memory 401, the processor 402, and the network interface 403 are connected to each other by a bus.
  • the memory 401 is for storing program code and transmitting the program code to the processor 402.
  • the processor 402 is configured to: perform resource allocation for the first terminal UE according to the instruction in the program code, where the resource allocation includes blanking a preset number of uplink subframes after the special subframe, where the The UE is located outside the preset distance range of the base station; and the uplink data from the first UE is scheduled based on the result of the resource allocation.
  • the processor 402 performs resource allocation for the first terminal UE, where the resource allocation includes blanking the first uplink subframe after the special subframe.
  • the processor 402 determines whether the uplink data returned by the first UE for the downlink data occupies the uplink subframe that is blanked, and according to the judgment As a result, it is determined whether the downlink data is transmitted to the first UE.
  • the processor 402 determines, before sending the retransmission instruction to the first UE, whether the data retransmitted by the first UE for the retransmission instruction occupies the uplink subframe that is blanked, and And determining, according to the determination result, whether to send a retransmission instruction to the first UE.
  • the processor 402 sends an ACK response to the first UE when the retransmitted data occupies the uplink subframe that is blanked.
  • the device embodiment since it basically corresponds to the method embodiment, reference may be made to the partial description of the method embodiment.
  • the device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, ie may be located A place, or it can be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. Those of ordinary skill in the art can understand and implement without any creative effort.
  • 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)
  • Mobile Radio Communication Systems (AREA)

Abstract

Les modes de réalisation de la présente invention décrivent un procédé de programmation de données dans un système de communication LTE-TDD, le procédé comprenant : une station de base mettant en œuvre une allocation de ressources pour un premier terminal UE, l'allocation de ressources comprenant l'annulation d'un nombre prédéfini de sous-trames de liaison montante après une sous-trame spécifique, et le premier terminal UE étant situé à l'extérieur d'une plage de distance prédéfinie de la station de base ; et, sur la base des résultats de l'allocation de ressources, la station de base mettant en œuvre la programmation des trames de données de liaison montante en provenance du premier terminal UE. La station de base de la présente invention rend nul le nombre prédéfini de sous-trames suivant la sous-trame spécifique grâce à la non programmation du nombre prédéterminé de sous-trames de liaison montante suivant une sous-trame spécifique à partir du terminal, ce qui augmente la tranche de temps occupée par la sous-trame spécifique, en permettant au système de répondre au besoin d'une avance de temps TA plus longue , et en atteignant l'objectif de prise en charge de la couverture à longue distance.
PCT/CN2015/098974 2015-12-25 2015-12-25 Procédé, appareil et station de base pour une programmation de données dans un système lte-tdd WO2017107195A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2582136A (en) * 2019-03-11 2020-09-16 Airspan Networks Inc Timing adjustment within a wireless communication system for a moving vehicle

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101159527A (zh) * 2007-10-29 2008-04-09 中兴通讯股份有限公司 数据传输方法
CN101414902A (zh) * 2007-10-16 2009-04-22 大唐移动通信设备有限公司 长期演进时分双工系统的传输方法及装置
CN101425844A (zh) * 2007-11-02 2009-05-06 大唐移动通信设备有限公司 一种时分双工系统的数据传输方法和系统
CN103906260A (zh) * 2012-12-28 2014-07-02 中兴通讯股份有限公司 随机接入前导处理方法及装置
WO2015047916A1 (fr) * 2013-09-26 2015-04-02 Qualcomm Incorporated Structure de trame d'évolution à long terme à répartition temporelle (td-lte)
CN105657851A (zh) * 2015-12-25 2016-06-08 海能达通信股份有限公司 一种lte-tdd系统中的数据调度方法、装置和基站

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101414902A (zh) * 2007-10-16 2009-04-22 大唐移动通信设备有限公司 长期演进时分双工系统的传输方法及装置
CN101159527A (zh) * 2007-10-29 2008-04-09 中兴通讯股份有限公司 数据传输方法
CN101425844A (zh) * 2007-11-02 2009-05-06 大唐移动通信设备有限公司 一种时分双工系统的数据传输方法和系统
CN103906260A (zh) * 2012-12-28 2014-07-02 中兴通讯股份有限公司 随机接入前导处理方法及装置
WO2015047916A1 (fr) * 2013-09-26 2015-04-02 Qualcomm Incorporated Structure de trame d'évolution à long terme à répartition temporelle (td-lte)
CN105657851A (zh) * 2015-12-25 2016-06-08 海能达通信股份有限公司 一种lte-tdd系统中的数据调度方法、装置和基站

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2582136A (en) * 2019-03-11 2020-09-16 Airspan Networks Inc Timing adjustment within a wireless communication system for a moving vehicle
GB2582136B (en) * 2019-03-11 2022-08-03 Airspan Ip Holdco Llc Timing adjustment within a wireless communication system for a moving vehicle
US11678384B2 (en) 2019-03-11 2023-06-13 Airspan Ip Holdco Llc Timing adjustment within a wireless communication system for a moving vehicle

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