WO2017079922A1 - Procédé et dispositif de transmission de données - Google Patents

Procédé et dispositif de transmission de données Download PDF

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Publication number
WO2017079922A1
WO2017079922A1 PCT/CN2015/094299 CN2015094299W WO2017079922A1 WO 2017079922 A1 WO2017079922 A1 WO 2017079922A1 CN 2015094299 W CN2015094299 W CN 2015094299W WO 2017079922 A1 WO2017079922 A1 WO 2017079922A1
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WIPO (PCT)
Prior art keywords
transmission
node
wireless service
cell
transmission quality
Prior art date
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PCT/CN2015/094299
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English (en)
Chinese (zh)
Inventor
蓝海青
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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
Priority to PCT/CN2015/094299 priority Critical patent/WO2017079922A1/fr
Priority to CN201580084465.2A priority patent/CN108353336A/zh
Publication of WO2017079922A1 publication Critical patent/WO2017079922A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/12—Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality

Definitions

  • Embodiments of the present invention relate to the field of communications, and, more particularly, to a method and apparatus for data transmission.
  • the basic form of the modern wireless communication system is composed of a radio frequency node and a superior node, and the radio frequency node and the upper node are directly connected by a cable.
  • the most typical example is a Long Term Evolution (LTE) base station.
  • the LTE base station is composed of a Base Band Unit (BBU) and a Radio Remote Unit (RRU).
  • BBU Base Band Unit
  • RRU Radio Remote Unit
  • the RRU can be regarded as a radio frequency node.
  • the BBU can be regarded as a superior node, and the RRU and the BBU are transmitted by using a common public radio interface (CPRI).
  • CPRI common public radio interface
  • the deployed universal transmission network can be used between the radio node and the upper node without further deployment of the transmission network, which can greatly improve the feasibility of the base station deployment, and The transmission cost can be reduced by using a universal transmission network.
  • the universal transmission network that has been deployed belongs to the shared network, the transmission quality between the radio node and the upper node is low, and may even affect the quality of the upper layer wireless service.
  • the embodiment of the invention provides a data transmission method, which can improve the service performance of the wireless layer.
  • a method of data transmission comprising:
  • the transmission rate of the wireless service is adjusted according to the transmission quality between the upper node and the radio node. In this way, not only can the service performance of the wireless layer be improved, but also the quality requirement for the transmission network can be reduced, thereby reducing the transmission cost and further improving the technical feasibility of the transmission.
  • the determining a transmission quality between the radio frequency node and the upper node includes: transmitting, according to the transmission system between the radio frequency node and the upper node The transmission quality parameter determines the transmission quality.
  • the transmission quality parameter may include at least one of the following: a packet loss rate, a bit error rate, a jitter, and a delay.
  • the transmission rate of the wireless service when the transmission quality is increased, the transmission rate of the wireless service is increased; or when the transmission quality is decreased, the wireless is decreased.
  • the transmission rate of the service when the transmission quality is increased, the transmission rate of the wireless service is increased; or when the transmission quality is decreased, the wireless is decreased.
  • the improving a transmission rate of the wireless service includes: increasing a wireless modulation order to improve the wireless The transmission rate of the service; the reducing the transmission rate of the wireless service, comprising: reducing a wireless modulation order to increase a transmission rate of the wireless service.
  • the transmission rate of the wireless service is increased, including increasing the transmission rate of the wireless service with a higher priority.
  • Reduce the transmission rate of wireless services including reducing the transmission rate of low priority wireless services.
  • the determining a transmission quality between the radio frequency node and the upper node includes: transmitting, according to the transmission system between the radio frequency node and the upper node a transmission quality parameter that determines a transmission quality associated with the first cell;
  • Adjusting, according to the transmission quality, a transmission rate of a radio service carried between the radio frequency node and the upper-level node including: adjusting the radio frequency node according to a transmission quality associated with the first cell, The transmission rate of the wireless service associated with the first cell carried between the upper nodes.
  • the determining a transmission quality between the radio frequency node and the upper node includes: according to the radio frequency node and the Decoding the transmission information of the transmission system between the upper nodes, and determining the correlation with the first cell Transmission quality and transmission quality associated with the second cell;
  • Adjusting the transmission rate of the wireless service according to the transmission quality including: when the transmission quality related to the second cell is better than the transmission quality related to the first cell, the data of the first cell is used Switching to the second cell for transmission.
  • the higher-priority wireless service originally transmitted in the first cell may be switched to the second cell, that is, the transmission rate of the wireless service with high priority originally transmitted in the first cell is increased, so as to ensure the priority.
  • the transmission of higher level data may be switched to the second cell, that is, the transmission rate of the wireless service with high priority originally transmitted in the first cell is increased, so as to ensure the priority.
  • data with a higher priority to be transmitted subsequently may be allocated to the second cell for transmission.
  • an apparatus for data transmission comprising:
  • a determining unit configured to determine a transmission quality between the radio frequency node and the upper node
  • a processing unit configured to adjust a transmission rate of the wireless service carried between the radio frequency node and the upper-level node according to the transmission quality determined by the determining unit.
  • the apparatus performs the method of data transmission of any of the above first aspects, and various implementations thereof.
  • an apparatus for data transmission comprising:
  • a processor configured to determine a transmission quality between the radio node and the upper node
  • the processor is further configured to adjust a transmission rate of the wireless service carried between the radio frequency node and the upper-level node according to the transmission quality.
  • the apparatus performs the method of data transmission of any of the above first aspects, and various implementations thereof.
  • a computer readable storage medium in a fourth aspect, storing a program causing the apparatus to perform the data transmission of any of the above first aspects, and various implementations thereof method.
  • the transmission rate of the wireless service is adjusted according to the transmission quality between the upper node and the radio node. In this way, not only can the business performance of the wireless layer be improved, but also the transmission cost can be reduced.
  • FIG. 1 is an example of a schematic diagram of a wireless communication system according to an embodiment of the present invention.
  • FIG. 2 is another example of a schematic diagram of a wireless communication system in accordance with an embodiment of the present invention.
  • FIG. 3 is a flow chart of a method of data transmission in accordance with an embodiment of the present invention.
  • FIG. 4 is another schematic diagram of a method of data transmission according to an embodiment of the present invention.
  • FIG. 5 is a block diagram of an apparatus for data transmission in accordance with one embodiment of the present invention.
  • FIG. 6 is a block diagram of an apparatus for data transmission in accordance with another embodiment of the present invention.
  • FIG. 1 and 2 show schematic diagrams of a wireless communication system in accordance with an embodiment of the present invention.
  • Three nodes are involved, namely the upper node 10, the radio frequency node 20 and the wireless transceiver 30.
  • the radio frequency node 20 and its upper node 10 form one end of wireless transmission and reception, and the other end of the radio transmission and reception is a wireless transceiver 30.
  • the most important feature of the RF node 20 is to complete the transmission and reception of the radio frequency function.
  • the L1, L1+L2, or L1+L2+L3 functions of the wireless function can be implemented, and the upper node 10 completes other parts of the wireless function.
  • the radio frequency node 20 only performs the L1 function
  • the upper node 10 completes the L2+L3 function.
  • the upper node 10 simultaneously performs the control function of the radio frequency node 20.
  • the radio frequency node 20 and its upper node 10 form one end of a wireless communication system and wirelessly communicate with the other end of the wireless transceiver 30.
  • the specific embodiment of the upper node 10, the radio frequency node 20, and the wireless transceiver 30 is not limited in the embodiment of the present invention.
  • the upper node 10 may be a BBU
  • the radio node 20 may be an RRU
  • the wireless transceiver 30 may be a terminal or a transit base station or the like.
  • the radio frequency node 20 communicates with the upper node 10 via the transmission system 40.
  • the transmission system may also be referred to as a transmission network, and the embodiment of the present invention does not specifically limit the transmission network.
  • the transmission network may be Time Division Multiplexing (Time Division Multiplexing, TDM) network, or it can be a packet network or the like.
  • TDM Time Division Multiplexing
  • the embodiment of the present invention does not limit the transmission mode between the radio frequency node 20 and the wireless transceiver 30, and may be, for example, a cellular network, a microwave network, a point-to-point transmission, or a wifi.
  • the radio node 20 communicates with the upper node 10 for the wireless service bottom layer 51, and the transport layer 50 carries the wireless service bottom layer 51.
  • the radio service node 20 communicates with the wireless transceiver 30 for the wireless service upper layer 53.
  • the wireless service bottom layer 51 between the upper node 10 and the radio frequency node 20 and the wireless service bottom layer 252 between the radio frequency node 20 and the wireless transceiver 30 are segmented. Hosted.
  • the upper node 10, the radio frequency node 20, and the wireless transceiver 30 perform wireless service layer 54 communication, and the upper node 10 and the radio frequency node 20 and the radio frequency node 20 communicate with each other.
  • the device 30 is segmented and carried.
  • the transmission quality monitoring is performed on the transmission layer 50 between the upper node 10 and the radio frequency node 20, and then the wireless service bottom layer 51 and the wireless service upper layer 53 or the wireless service layer 54 are protected.
  • FIG. 3 is a flow chart of a method of data transmission in accordance with an embodiment of the present invention.
  • the method shown in Figure 3 includes:
  • the transmission rate of the wireless service is adjusted according to the transmission quality between the upper node and the radio node. In this way, not only can the business performance of the wireless layer be improved, but also the transmission cost can be reduced.
  • the method shown in FIG. 3 is mainly performed by an upper node.
  • the radio frequency node may monitor the transmission quality and notify the superior node. That is to say, S301 may be that the upper node obtains the transmission quality obtained by the radio node from the radio node.
  • S301 may include: determining the transmission quality parameter according to transmission information of a transmission system between the radio frequency node and the upper node.
  • the transmission quality parameter may include at least one of the following: a packet loss rate, a bit error rate, a jitter, and a delay. That is, the assessment of transmission quality can be evaluated based on one or more of the packet loss rate, bit error rate, jitter, and delay.
  • the transmission quality parameter may also include other transmission parameters, which are not limited herein.
  • the transmission quality parameters may include transmission of available bandwidth and the like.
  • the evaluation criteria for the transmission quality parameter can be preset A fixed value is also set, which may be a parameter value measured at a previous moment of the current time, which is not limited herein.
  • the change in transmission quality can be determined based on changes in the transmission quality parameters.
  • the low priority service may also be flow controlled based on the transmission quality in S302.
  • the wireless service includes a first wireless service with a priority of 1 and a second wireless service with a priority of 2, that is, the first wireless service has a higher priority than the second wireless service. Then, when the transmission quality is degraded, the transmission rate of the second wireless service can be lowered in order to preferentially guarantee the transmission of the first wireless service. For example, the transmission rate of the second wireless service can be reduced by 50%.
  • the service capability of the wireless layer can be improved by adjusting the transmission rate of the wireless service.
  • the quality requirement for the transmission network can be reduced, thereby reducing the transmission cost, and further improving the technical feasibility of the transmission.
  • the base station may provide multiple cells, that is, the radio frequency node 20 may access multiple cells at the same time.
  • the first radio frequency node 21 and the second radio frequency node 22 are included in FIG.
  • one radio frequency node (the first radio frequency node 21 or the second radio frequency node 22) may simultaneously access the first cell 61 and the second cell 62.
  • the first radio frequency node 21 accesses the first cell 61 and the second radio frequency node 22 accesses the second cell 62.
  • the wireless transceiver 30 accesses the wireless system through a plurality of cells (such as the first cell 61 and the second cell 62 in FIG. 4).
  • the wireless transceiver 30 can simultaneously send and receive data through multiple cells.
  • each cell can correspond to one data stream.
  • transmission system 40 can carry information for the cell. Then, it can be understood that the transmission quality related to the cell can be determined in S301, and then the transmission rate of the wireless service of the corresponding cell is adjusted in S302.
  • the transmission rate of the radio service of the corresponding cell may be understood as the transmission rate of the data stream of the corresponding cell.
  • the transmission quality associated with the first cell may be determined according to a transmission quality parameter of the transmission system between the radio node and the upper node. And adjusting, according to the transmission quality associated with the first cell, a transmission rate of the wireless service related to the first cell carried by the radio frequency node and the upper-level node. That is, the transmission rate of the data stream corresponding to the first cell is adjusted.
  • the first cell may be determined. The associated transmission quality is degraded. If one or more of a packet loss rate, a bit error rate reduction, a jitter reduction, and a delay reduction corresponding to the first cell in the transmission system are detected, the first cell may be determined. The transmission quality has increased.
  • the transmission rate of the wireless service can be adjusted by adjusting the wireless modulation order. For example, when the transmission quality associated with the first cell increases, the transmission rate of the wireless service related to the first cell is increased, or the transmission rate of the wireless service related to the first cell is increased by increasing the wireless modulation order. For example, when the transmission quality associated with the first cell decreases, the transmission rate of the wireless service associated with the first cell is reduced, or the transmission rate of the wireless service associated with the first cell is reduced by lowering the degree of wireless modulation.
  • the service capability of the radio layer of the corresponding cell can be improved by adjusting the transmission rate of the radio service of the corresponding cell.
  • the quality requirement for the transmission network can be reduced, thereby reducing the transmission cost, and further improving the technical feasibility of the transmission.
  • the transmission quality related to the multiple cells may be determined in S301, and the amount of data between the multiple cells is further adjusted in S302 to adjust the transmission rate of the wireless service.
  • the transmission quality associated with the first cell and the transmission quality associated with the second cell may be determined according to a transmission quality parameter of the transmission system between the radio frequency node and the superior node.
  • the transmission quality associated with the second cell is better than the transmission quality associated with the first cell, the data of the first cell is handed over to the second cell for transmission.
  • the cell-related transmission quality may be determined by the upper-level node; or the radio-frequency node may also monitor the cell-related transmission quality, and the radio-frequency node notifies the super-node of the monitored transmission quality and the identity of the corresponding cell.
  • the higher priority data originally transmitted in the first cell may be switched to the second cell to ensure the transmission rate of the higher priority data.
  • the controller or administrator can set a higher priority for more important data.
  • the data of the first cell is switched to the second cell for transmission.
  • the method further includes: allocating data with high priority to be transmitted subsequently to the second cell for transmission.
  • the superior node allocates the data with high priority that is planned to be transmitted by the first cell to the second cell for transmission, so as to ensure the transmission rate of the data with high priority.
  • the upper node when the upper node allocates data, it can allocate important data with high priority to the cell with good transmission quality.
  • the data switched to the second cell may be switched back.
  • the wireless service in S302 may be a wireless service under the wireless service or a wireless service at a high level of the wireless service, as shown in FIG. 1 .
  • the wireless service in S302 may also be a wireless service of the wireless service layer, as shown in FIG. 2 .
  • the service capability of the wireless layer can be improved by adjusting the transmission rate of the wireless service.
  • the quality requirement for the transmission network can be reduced, thereby reducing the transmission cost, and further improving the technical feasibility of the transmission.
  • the method of the embodiment of the present invention may also be a radio layer compression technology based on transmission quality. Or it can be applied to the transport layer, such as transmission quality based compression and multiplexing techniques.
  • the invention is not limited thereto.
  • FIG. 5 is a block diagram of an apparatus for data transmission in accordance with one embodiment of the present invention.
  • the apparatus 500 shown in FIG. 5 includes a determining unit 501 and a processing unit 502.
  • a determining unit 501 configured to determine a transmission quality between the radio frequency node and the upper node
  • the processing unit 502 is configured to adjust a transmission rate of the wireless service carried between the radio frequency node and the upper-level node according to the transmission quality determined by the determining unit 501.
  • the transmission rate of the wireless service is adjusted according to the transmission quality between the upper node and the radio node. In this way, not only can the business performance of the wireless layer be improved, but also the transmission cost can be reduced.
  • the determining unit 501 is specifically configured to determine the transmission quality according to a transmission quality parameter of a transmission system between the radio frequency node and the upper node.
  • the transmission quality parameter may include at least one of the following: a packet loss rate, a bit error rate, a jitter, and a delay.
  • the change in transmission quality can be determined based on changes in the transmission quality parameters.
  • the packet loss rate is increased, the bit error rate is increased, the jitter is increased, and the delay is increased.
  • it can be determined that the transmission quality is degraded.
  • a packet loss rate reduction, a bit error rate reduction, a jitter reduction, and a delay reduction are detected, it is possible to determine that the transmission quality is increased.
  • the processing unit 502 is specifically configured to: when the transmission quality increases, increase a transmission rate of the wireless service; when the transmission quality decreases, decrease a transmission rate of the wireless service. .
  • the processing unit 502 is specifically configured to: increase a wireless modulation order to increase a transmission rate of the wireless service; or reduce a wireless modulation order to increase a transmission rate of the wireless service.
  • the determining unit 501 is specifically configured to: determine, according to a transmission quality parameter of the transmission system between the radio frequency node and the upper-level node, a transmission quality related to the first cell.
  • the processing unit 502 is specifically configured to: adjust, according to the transmission quality associated with the first cell, a transmission rate of the wireless service related to the first cell that is carried by the radio frequency node and the upper-level node.
  • the determining unit 501 is specifically configured to: determine, according to transmission information of the transmission system between the radio frequency node and the upper-level node, a transmission quality related to the first cell and the second cell Relevant transmission quality.
  • the processing unit 502 is specifically configured to: when the transmission quality related to the second cell is better than the transmission quality related to the first cell, switch data of the first cell to the second cell for transmission.
  • the processing unit 502 is further configured to: allocate data with a higher priority to be transmitted to the second cell for transmission.
  • the device 500 can be a superior node.
  • the wireless service is a wireless service under the wireless service; or the wireless service is a wireless service of a wireless service upper layer; or the wireless service is a wireless service at a wireless service layer.
  • the determining unit 501 and the processing unit 502 may be implemented by a processor.
  • device 600 can include a processor 601, a transceiver 602, and a memory 604.
  • the transceiver 602 can be used to send and receive data of a wireless service; the memory 604 can be used to store code and the like executed by the processor 601.
  • the various components in device 600 are coupled together by a bus system 603, which in addition to the data bus includes a power bus, a control bus, and a status signal bus.
  • a bus system 603 which in addition to the data bus includes a power bus, a control bus, and a status signal bus.
  • the apparatus 500 shown in FIG. 5 or the apparatus 600 shown in FIG. 6 can implement the method described above.
  • the various processes implemented in the example are not repeated here to avoid repetition.
  • the processor may be an integrated circuit chip with signal processing capabilities.
  • each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software.
  • the processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or the like. Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding 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.
  • the memory in the embodiments of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory.
  • the volatile memory can be a Random Access Memory (RAM) that acts as an external cache.
  • RAM Random Access Memory
  • many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM).
  • SDRAM Double Data Rate SDRAM
  • DDR SDRAM Double Data Rate SDRAM
  • ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • SLDRAM Synchronous Connection Dynamic Random Access Memory
  • DR RAM direct memory bus random access memory
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

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

Abstract

Des modes de réalisation de la présente invention concernent un procédé de transmission de données comprenant : la détermination d'une qualité de transmission entre un nœud de fréquence radioélectrique et un nœud de niveau supérieur (S301) ; et le réglage d'un débit de transmission d'un service radio pris en charge entre le nœud de fréquence radioélectrique et le nœud de niveau supérieur en fonction de la qualité de transmission (S302). Dans les modes de réalisation de la présente invention, le débit de transmission du service radio est réglé en fonction de la qualité de transmission entre le nœud de niveau supérieur et le nœud de fréquence radioélectrique. De cette manière, la performance de service d'une couche radio peut être améliorée et des coûts de transmission peuvent également être réduits.
PCT/CN2015/094299 2015-11-11 2015-11-11 Procédé et dispositif de transmission de données WO2017079922A1 (fr)

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CN201580084465.2A CN108353336A (zh) 2015-11-11 2015-11-11 数据传输的方法与装置

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CN1765087A (zh) * 2003-02-03 2006-04-26 马科尼通讯股份有限公司 通信网和在通信网中传输数据的方法
CN101569144A (zh) * 2006-12-27 2009-10-28 英特尔公司 用于确定路由度量的方法和设备
CN101807936A (zh) * 2009-02-12 2010-08-18 中国电子科技集团公司第五十二研究所 一种无线传感器网络异频通信节点
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CN101772047B (zh) * 2009-01-07 2013-08-07 中兴通讯股份有限公司 网络质量监控方法和系统
CN101873168A (zh) * 2009-04-23 2010-10-27 大唐移动通信设备有限公司 一种业务数据传输方法及装置
CN101883449B (zh) * 2009-05-04 2013-08-07 中国移动通信集团公司 Bbm与rru之间iq数据交换的方法、装置与系统
CN101982995A (zh) * 2010-10-29 2011-03-02 华为技术有限公司 一种通信的方法、装置和系统

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Publication number Priority date Publication date Assignee Title
CN1765087A (zh) * 2003-02-03 2006-04-26 马科尼通讯股份有限公司 通信网和在通信网中传输数据的方法
CN101569144A (zh) * 2006-12-27 2009-10-28 英特尔公司 用于确定路由度量的方法和设备
CN101807936A (zh) * 2009-02-12 2010-08-18 中国电子科技集团公司第五十二研究所 一种无线传感器网络异频通信节点
US20150117316A1 (en) * 2009-10-09 2015-04-30 At&T Intellectual Property I, L.P. Data routing in hybrid wireless communication networks

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