WO2012159413A1 - 一种mac层上行动态调度的方法和装置 - Google Patents

一种mac层上行动态调度的方法和装置 Download PDF

Info

Publication number
WO2012159413A1
WO2012159413A1 PCT/CN2011/081198 CN2011081198W WO2012159413A1 WO 2012159413 A1 WO2012159413 A1 WO 2012159413A1 CN 2011081198 W CN2011081198 W CN 2011081198W WO 2012159413 A1 WO2012159413 A1 WO 2012159413A1
Authority
WO
WIPO (PCT)
Prior art keywords
bsr
retransmission
base station
station side
new
Prior art date
Application number
PCT/CN2011/081198
Other languages
English (en)
French (fr)
Inventor
赵巧宁
Original Assignee
中兴通讯股份有限公司
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 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2012159413A1 publication Critical patent/WO2012159413A1/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows

Definitions

  • the present invention relates to a method and apparatus for uplink dynamic scheduling in the field of wireless communication, in particular, a method for uplink dynamic scheduling of a medium access control (MAC, Media Access Control) layer in a Long Term Evolution (LTE) system and related devices .
  • MAC medium access control
  • LTE Long Term Evolution
  • FIG. 1 is a schematic diagram of an LTE system provided by the prior art.
  • an existing LTE system is mainly composed of a terminal, a base station, and a core network.
  • the base station is responsible for access layer transactions, such as radio resource management.
  • the uplink and downlink radio resources are scheduled by the base station in a shared channel manner.
  • the core network is responsible for non-access layer transactions, such as billing, location management, and so on.
  • Each terminal is usually only connected to one base station in the network in the upstream direction.
  • the error control method (the combination of the two methods forms a Hybrid Automatic Repeat Request (HARQ)) to reduce the bit error rate of the system to ensure the quality of service.
  • the minimum round trip delay (RTT) of HARQ is defined as the completion time of a data packet transmission process, including starting from a data packet at the transmitting end, and receiving the processing after receiving, and feeding back ACK/NACK signaling according to the result. After the transmitter demodulates and processes the ACK/NACK signal, it determines the whole process of retransmitting or transmitting a new data packet in the next frame.
  • LTE uses base station scheduling to control uplink and downlink transmissions of different terminals to improve channel utilization.
  • the terminal In the uplink transmission, the terminal needs to apply for uplink resources to the base station, and the base station reports according to the terminal.
  • the buffer status report (BSR, Buffer Status Reporting), the air interface resource status, and the service attribute, etc., dynamically allocate resources to the terminal, and notify the terminal through a physical downlink control channel (PDCCH, Physical Downlink Control Channel); the terminal always monitors the PDCCH to discover Possible dynamic resource allocation.
  • the BSR is transmitted by the terminal group in the transport block (TB, Transport Block) and sent to the base station side.
  • the base station Based on the current scheduling mode, after the terminal sends a BSR, the base station does not receive the BSR due to poor channel quality.
  • the Medium Access Control (MAC) layer of the terminal resends the TB that has been sent.
  • the number of HARQ processes is eight, and the RTT is eight transmission time intervals ( ⁇ , Transmission Time Interval), then one data retransmission requires eight ⁇ .
  • the terminal continues to send new data to the base station. If BSR is generated at this time, the terminal reports the BSR in the new data. After the data is retransmitted, the BSR contained in the BSR cannot reflect the status of the terminal buffer. If the BSR is scheduled, the air interface resources will be wasted. If the channel quality is poor, the MAC layer retransmits more TBs, which will result in a serious waste of air interface resources. Summary of the invention
  • An object of the present invention is to provide a MAC layer uplink dynamic scheduling method and apparatus, which can solve the problem of shortage of air interface resources caused by a BSR in a retransmission TB that cannot truly reflect the current buffer status of the terminal.
  • a method for MAC layer uplink dynamic scheduling includes:
  • the base station side receives the buffer status report (BSR, Buffer Status Reporting) reported by the terminal, and determines whether the BSR is a new transmission BSR in the new transmission transport block (TB, Transport Block) or a retransmission BSR in the retransmission TB. ;
  • the base station side is based on the newly transmitted BSR as a terminal Allocate uplink resources
  • the base station side allocates an uplink resource to the terminal according to the newly transmitted BSR received before receiving the retransmission BSR.
  • step C) includes:
  • the base station side When it is determined that the BSR received by the base station is a retransmission BSR, the base station side further determines whether the retransmission BSR belongs to the first retransmission TB;
  • the base station side determines whether there is a new transmission BSR in the newly transmitted TB in the first predetermined time before receiving the TB;
  • the retransmission BSR is discarded. Otherwise, the uplink resource is allocated to the terminal according to the retransmission BSR.
  • the first predetermined time is equal to the number of retransmissions 1 times the round trip delay (RTT, Round Trip Time).
  • step C) further includes:
  • the base station side determines whether the retransmission BSR belongs to the second retransmission TB;
  • the base station side determines whether there is a new transmission BSR in the newly transmitted TB in the second predetermined time before receiving the TB;
  • the retransmission BSR is discarded, otherwise the uplink resource is allocated to the terminal according to the retransmission BSR.
  • the second predetermined time is equal to the number of retransmissions 2 multiplied by RTT.
  • step C) further includes:
  • the base station side determines whether the retransmission BSR belongs to the third retransmission TB;
  • the base station side determines whether there is a newly transmitted BSR in the newly transmitted TB in the third predetermined time before receiving the TB; If there is a new BSR, the retransmission BSR is discarded, otherwise the uplink resource is allocated to the terminal according to the retransmission BSR.
  • the third predetermined time is equal to the number of retransmissions 3 multiplied by RTT.
  • the RTT is eight transmission time intervals ( ⁇ , Transmission Time Interval).
  • the RTT is 10 TTIs.
  • an apparatus for MAC layer uplink dynamic scheduling provided by the present invention includes:
  • the BSR receiving module is configured to receive the BSR reported by the terminal, and determine whether the BSR is a new transmission BSR in the new transmission TB or a retransmission BSR in the retransmission TB;
  • the BSR judging module is configured to: when receiving the retransmission BSR, determine whether a new BSR exists in the new TB received before receiving the retransmission BSR;
  • the resource scheduling module is configured to allocate an uplink resource to the terminal according to the newly transmitted BSR, or allocate a uplink resource according to the received retransmission BSR according to the received retransmission BSR when the new transmission BSR does not exist in the new transmission TB before receiving the retransmission BSR.
  • the present invention solves the problem of insufficient MAC uplink dynamic scheduling in the LTE system by providing a MAC layer uplink dynamic scheduling method and apparatus, and avoids repeated scheduling of the same data. Reduced waste of air interface resources. DRAWINGS
  • FIG. 1 is a schematic diagram of an LTE system provided by the prior art
  • FIG. 2 is a flowchart of a method for uplink dynamic scheduling of a MAC layer according to an embodiment of the present invention
  • FIG. 3 is a flowchart of uplink dynamic scheduling of a MAC layer according to an embodiment of the present invention
  • FIG. 4 is a flowchart of MAC layer uplink dynamic scheduling in an FDD according to an embodiment of the present invention
  • FIG. 5 is a flowchart of MAC layer uplink dynamic scheduling in a TDD according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of an apparatus for uplink dynamic scheduling of a MAC layer according to an embodiment of the present invention.
  • FIG. 2 is a flowchart of a method for uplink dynamic scheduling of a MAC layer according to an embodiment of the present invention. As shown in FIG. 2, the steps include:
  • Step 201 The base station side receives the buffer status report (BSR, Buffer Status Reporting) reported by the terminal, and determines whether the BSR is a new transmission BSR in the new transmission transport block (TB, Transport Block) or a retransmission in the retransmission TB.
  • BSR buffer Status Report
  • Step 202 When it is determined that the BSR is a newly transmitted BSR, the base station side allocates an uplink resource to the terminal according to the newly transmitted BSR.
  • Step 203 When it is determined that the BSR is a retransmission BSR, the base station side allocates an uplink resource to the terminal according to the newly transmitted BSR received before receiving the retransmission BSR time.
  • the step 203 includes: when determining that the BSR received by the base station is a retransmission BSR, the base station side further determines whether the retransmission BSR belongs to the first retransmission TB;
  • the base station side determines whether there is a new transmission BSR in the newly transmitted TB in the first predetermined time before receiving the TB;
  • the retransmission BSR is discarded. Otherwise, the uplink resource is allocated to the terminal according to the retransmission BSR.
  • the first predetermined time is equal to the number of retransmissions 1 times the round trip delay (RTT, Round Trip Time).
  • step 203 further includes:
  • the base station side determines whether the retransmission BSR belongs to the second retransmission TB;
  • the base station side determines to receive the Whether there is a newly transmitted BSR in the newly transmitted TB in the second predetermined time before the TB;
  • the retransmission BSR is discarded, otherwise the uplink resource is allocated to the terminal according to the retransmission BSR.
  • the second predetermined time is equal to the number of retransmissions 2 multiplied by RTT.
  • step 203 further includes:
  • the base station side determines whether the retransmission BSR belongs to the third retransmission TB;
  • the base station side determines whether there is a new transmission BSR in the newly transmitted TB in the third predetermined time before receiving the TB;
  • the retransmission BSR is discarded, otherwise the uplink resource is allocated to the terminal according to the retransmission BSR.
  • the third predetermined time is equal to the number of retransmissions 3 multiplied by RTT.
  • the RTT is 8 ⁇ , and in the TDD system, the RTT is 10 TTIs.
  • FIG. 3 is a flowchart of the MAC layer uplink dynamic scheduling provided by the embodiment of the present invention, as shown in FIG. 3: The steps include:
  • Step 301 The base station side receives the BSR reported by the terminal.
  • Step 302 The base station side determines whether the BSR is a new BSR in the newly transmitted TB, or retransmits the retransmitted BSR in the TB. If the retransmission BSR in the TB is retransmitted, step 303 is performed, if it is a new TB. In the new pass BSR, step 305 is performed;
  • Step 303 The base station side determines whether there is a newly transmitted BSR in the newly transmitted TB in the period before receiving the retransmission BSR. If yes, step 304 is performed, otherwise step 305 is performed; the period of time is determined for different systems;
  • Step 304 Discard the retransmission BSR
  • Step 305 The base station side performs dynamic scheduling according to the retransmission BSR reported by the terminal, and divides the terminal into With upstream resources.
  • the dynamic scheduling of the uplink resources of the MAC layer ends.
  • the period of time is determined for different systems.
  • the following takes the LTE FDD system and the LTE TDD system as an example to further describe the MAC uplink dynamic scheduling in further detail.
  • FIG. 4 is a flowchart of MAC layer uplink dynamic scheduling in FDD according to an embodiment of the present invention. As shown in FIG. 4, it is assumed that in an FDD system, the number of HARQ processes is eight, and the RTT is eight TTIs. 3, that is, the number of new transmissions and the number of retransmissions are 4, and the MAC layer uplink dynamic scheduling steps include:
  • Step 401 The base station side receives the BSR reported by the terminal.
  • Step 402 The base station side determines whether the BSR is a new transmission BSR in the new transmission TB, or retransmits the retransmission BSR in the TB. If the retransmission BSR in the TB is retransmitted, step 403 is performed, if it is a new transmission TB In the new pass BSR, step 409 is performed;
  • Step 403 The base station side determines whether the retransmission BSR belongs to the first retransmission TB, and if yes, step 404 is performed, otherwise step 405 is performed;
  • Step 404 The base station side determines whether there is a newly transmitted BSR in the newly transmitted TB in one RTT before receiving the retransmission BSR, and if yes, executing step 409, otherwise discarding the Retransmit the BSR and end the process;
  • Step 405 The base station side determines whether the retransmission BSR belongs to the second retransmission TB, and if yes, step 406 is performed, otherwise step 407 is performed;
  • Step 406 The base station side determines whether there is a newly transmitted BSR in the two RTTs before the time of receiving the retransmission BSR, that is, in the 16 ⁇ , and if there is no new BSR, if yes, step 409 is performed, otherwise the method is discarded. Retransmit the BSR and end the process;
  • Step 407 The base station side determines whether the retransmission BSR belongs to the third retransmission TB. If yes, step 408 is performed; otherwise, the process ends; Step 408: The base station side determines whether there is a new BSR in the three RTTs before receiving the retransmission BSR, that is, in the 24 ⁇ , and if there is no new BSR, if yes, step 409 is performed, otherwise the method is discarded. Retransmit the BSR and end the process;
  • Step 409 The base station side performs dynamic scheduling according to the retransmission BSR, and allocates uplink resources to the terminal.
  • the MAC layer uplink resource dynamic scheduling of the LTE FDD system ends.
  • FIG. 5 is a flowchart of uplink dynamic scheduling of a MAC layer in a TDD according to an embodiment of the present invention.
  • the uplink and downlink subframe configuration 1 of the TDD system that is, the uplink scheduling of the uplink and downlink subframe ratio is 2:3.
  • the number of HARQ processes is four
  • the RTT is 10 TTIs
  • the number of retransmissions is set to 3, that is, the number of new transmissions and the number of retransmissions are 4.
  • the MAC layer uplink dynamic scheduling step includes: Step 501: The base station side receives the BSR reported by the terminal;
  • Step 502 The base station side determines whether the BSR is a new transmission BSR in the new transmission TB, or retransmits the retransmission BSR in the TB. If the retransmission BSR in the TB is retransmitted, step 503 is performed, if it is a new transmission TB In the new pass BSR, step 509 is performed;
  • Step 503 The base station side determines whether the retransmission BSR belongs to the first retransmission TB, if yes, step 504 is performed, otherwise step 505 is performed;
  • Step 504 The base station side determines whether there is a new BSR in the newly transmitted TB in one RTT before receiving the retransmission BSR time. If not, the process proceeds to step 509, otherwise the device discards the Retransmit the BSR and end the process;
  • Step 505 The base station side determines whether the retransmission BSR belongs to the second retransmission TB, and if yes, step 506 is performed, otherwise step 507 is performed;
  • Step 506 The base station side determines whether there is a newly transmitted BSR in the two RTTs before the time of receiving the retransmission BSR, that is, in the 20 ⁇ , and if there is no new BSR, if yes, step 509 is performed, otherwise the discarding is performed. Retransmit the BSR and end the process;
  • Step 507 The base station side determines whether the retransmission BSR belongs to the third retransmission TB, and if so, Then step 508 is performed, otherwise the process ends;
  • Step 508 The base station side determines whether there is a new BSR in the newly transmitted TB in the first three RTTs of the retransmission BSR, and if yes, step 509 is performed, otherwise the weight is discarded. Pass the BSR and end the process;
  • Step 509 The base station side performs dynamic scheduling according to the retransmission BSR, and allocates uplink resources to the terminal.
  • the MAC layer uplink resource dynamic scheduling of the LTE TDD system ends.
  • FIG. 6 is a schematic diagram of an apparatus for uplink dynamic scheduling of a MAC layer according to an embodiment of the present invention. As shown in FIG. 6, the apparatus includes:
  • the BSR receiving module is configured to receive the BSR reported by the terminal, and determine whether the BSR is a new transmission BSR in the new transmission TB or a retransmission BSR in the retransmission TB;
  • the BSR judging module is configured to: when receiving the retransmission BSR, determine whether a new BSR exists in the new TB received before receiving the retransmission BSR;
  • the resource scheduling module is configured to allocate an uplink resource to the terminal according to the newly transmitted BSR, or allocate a uplink resource according to the received retransmission BSR according to the received retransmission BSR when the new transmission BSR does not exist in the new transmission TB before receiving the retransmission BSR.
  • the BSR receiving module receives the BSR reported by the terminal, and determines whether the BSR is a new BSR in the newly transmitted TB or a retransmission BSR in the retransmission TB. When it is determined that the BSR is a retransmission BSR, the BSR is further determined to retransmit the BSR. It belongs to the first few retransmissions of TB.
  • the BSR receiving module transmits the new BSR to the resource scheduling module, so that the resource scheduling module allocates an uplink resource to the terminal according to the newly transmitted BSR; Retransmitting the BSR, the BSR receiving module transmits the retransmission BSR to the BSR judging unit, and the BSR judging unit judges to receive the retransmission BSR according to the TB that belongs to the retransmission BSR. Whether there is a newly transmitted BSR in the newly transmitted TB received before the moment, if not, transmitting the retransmission BSR to the resource scheduling module, so that the resource scheduling module according to the retransmission BSR Allocate uplink resources to the terminal.
  • the BSR judging unit determines whether there is a newly transmitted BSR in the newly transmitted TB received in the first RTT before receiving the retransmission BSR; If the retransmission BSR belongs to the second retransmission BSR, the BSR judging unit judges whether there is a new transmission BSR in the newly transmitted TB received in the first two RTTs before receiving the retransmission BSR; The retransmission BSR belongs to the third retransmission BSR, and the BSR judging unit judges whether there is a new transmission BSR in the newly transmitted TB received in the first three RTTs at the time of receiving the retransmission BSR.
  • the BSR judging unit judges whether there is a new transmission BSR in the newly transmitted TB received in the N RTTs before the time of receiving the retransmission BSR. .
  • the RTT is specific to different systems, for example in an FDD system, the RTT is 8 ⁇ . In an FDD system, the RTT is 10 TTIs.
  • the present invention solves the problem of insufficient uplink dynamic scheduling of the MAC in the LTE system, avoids repeated scheduling of the same data, and reduces waste of air interface resources.

Landscapes

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

Abstract

本发明公开了一种MAC层上行动态调度的方法和装置，所述方法包括：A）基站侧接收终端上报的缓冲区状态报告（Buffer Status Reporting，BSR），并判断所述BSR是新传传输块（Transport Block，TB）中的新传BSR还是重传TB中的重传BSR；B）当判断所述BSR是新传BSR时，基站侧根据所述新传BSR为终端分配上行资源；C）当判断所述BSR是重传BSR时，基站侧根据接收所述重传BSR时刻前接收的新传BSR，为终端分配上行资源。本发明通过提供MAC层上行动态调度的方法和装置，解决了LTE系统中MAC上行动态调度不足的问题，避免了对相同数据的重复调度，减少了空口资源浪费。

Description

一种 MAC层上行动态调度的方法和装置 技术领域
本发明涉及无线通信领域的一种上行动态调度的方法和装置， 尤其是 长期演进（ LTE, Long Term Evolution )系统内介质访问控制（ MAC, Media Access Control )层上行动态调度的方法及其相关装置。 背景技术
图 1显示了现有技术提供的 LTE系统示意图， 如图 1所示， 现有 LTE 系统主要由终端、 基站和核心网组成。 基站负责接入层事务， 如无线资源 管理等。 上下行无线资源按共享信道的方式由基站负责调度。 核心网负责 非接入层事务， 如计费、 位置管理等。 每个终端在上行方向通常只连接到 网络中的一个基站。
在现有 LTE系统中， 为了克服无线移动信道时变和多径衰落对信号传 输的影响， 采用基于前向纠错（FEC, Forward Error Correction )和自动重 传请求（ARQ, Automatic Repeat Request )的差错控制方法（这两种方法结 合就形成了混合自动重传请求（ HARQ, Hybrid Automatic Repeat Request ) ), 来降低系统的误码率以确保服务质量。 HARQ的最小往返时延（ RTT , Round Trip Time ) 定义为一次数据包传输过程的完成时间， 包括从一个数据包在 发送端开始发送，接收端开始接收处理后，根据结果反馈 ACK/NACK信令， 发送端解调处理 ACK/NACK信号后，确定下一帧进行重传或传送新数据包 的全过程。
对于上行和下行共享信道， LTE采用基站调度的方式来控制不同终端 的上行和下行传输， 以提高信道的利用率。
在上行传输中， 终端需要向基站申请上行资源， 基站根据终端上报的 緩沖区状态报告（BSR, Buffer Status Reporting ), 空口资源状况以及业务 属性等，为终端动态分配资源，且通过物理下行控制信道（PDCCH, Physical Downlink Control Channel )通知终端； 终端总是监测 PDCCH来发现可能的 动态资源分配。 BSR是由终端组包于传输块（TB, Transport Block ) 中， 发送给基站侧的。
基于当前的调度模式， 终端在发送 BSR后， 由于信道质量差等原因， 导致基站没有接收到此 BSR。 此种情况下， 终端的介质访问控制 （MAC, Medium Access Control )层就会对已经发送的 TB, 进行重新发送。 假设在 频分双工 （FDD, Frequency Division Duplexing ) 系统中， HARQ进程数为 8个， RTT为 8个传输时间间隔 （ΤΉ, Transmission Time Interval ), 则一 次数据的重传，需要 8个 ΤΉ,在此期间，终端仍然继续向基站发送新数据， 如果此时又有 BSR生成， 则终端在新数据中， 又会上报 BSR。 这样待收到 重传数据后， 其中包含的 BSR已经不能真实反映终端緩沖区的状态， 此时 再对此 BSR进行调度，就会造成空口资源浪费。如果信道质量差一些， MAC 层重传 TB较多， 则会造成很严重的空口资源浪费。 发明内容
本发明的目的在于提供一种 MAC层上行动态调度的方法和装置，能够 解决重传 TB中的 BSR不能真实反映终端当前緩沖区的状态而造成的紧缺 的空口资源浪费的问题。
根据本发明的一个方面，本发明提供的一种 MAC层上行动态调度的方 法包括：
A ) 基站侧接收终端上报的緩沖区状态报告 （BSR , Buffer Status Reporting ), 并判断所述 BSR是新传传输块（ TB , Transport Block ) 中的新 传 BSR还是重传 TB中的重传 BSR;
B )当判断所述 BSR是新传 BSR时，基站侧根据所述新传 BSR为终端 分配上行资源；
C )当判断所述 BSR是重传 BSR时，基站侧根据接收所述重传 BSR时 刻前接收的新传 BSR, 为终端分配上行资源。
进一步地， 所述步驟 C ) 包括：
当判断基站侧接收的 BSR是重传 BSR时，基站侧进一步判断所述重传 BSR是否属于第一次重传 TB;
若判断所述重传 BSR属于第一次重传 TB , 则基站侧判断在接收所述 TB前的第一预定时间内新传 TB中是否存在新传 BSR;
若存在新传 BSR, 则丟弃所述重传 BSR, 否则， 根据所述重传 BSR为 终端分配上行资源。
所述第一预定时间等于重传次数 1 乘以往返时延（RTT, Round Trip Time )。
进一步地， 所述步驟 C )还包括：
当判断所述重传 BSR不属于第一次重传 TB时， 基站侧判断所述重传 BSR是否属于第二次重传 TB;
若判断所述重传 BSR属于第二次重传 TB, 则基站侧判断在接收所述 TB前的第二预定时间内新传 TB中是否存在新传 BSR;
若存在新传 BSR, 则丟弃所述重传 BSR, 否则根据所述重传 BSR, 为 终端分配上行资源。
所述第二预定时间等于重传次数 2乘以 RTT。
进一步地， 所述步驟 C )还包括：
当判断所述重传 BSR不属于第二次重传 TB时， 基站侧判断所述重传 BSR是否属于第三次重传 TB;
若判断所述重传 BSR属于第三次重传 TB, 则基站侧判断在接收所述 TB前的第三预定时间内新传 TB中是否存在新传 BSR; 若存在新传 BSR, 则丟弃所述重传 BSR, 否则根据所述重传 BSR, 为 终端分配上行资源。
所述第三预定时间等于重传次数 3乘以 RTT。
进一步地， 在频分双工（FDD, Frequency Division Duplexing )系统中， 所述 RTT为 8个传输时间间隔 （ ΤΉ, Transmission Time Interval )。
进一步地， 在时分双工 （TDD, Time Division Duplexing ) 系统中， 所 述 RTT为 10个 TTI。
根据本发明的另一个方面，本发明提供的一种 MAC层上行动态调度的 装置包括：
BSR接收模块， 用于接收终端上报的 BSR, 并判断所述 BSR是新传 TB中的新传 BSR还是重传 TB中的重传 BSR;
BSR判断模块， 用于在接收重传 BSR时， 判断接收所述重传 BSR的 时刻前接收到的新传 TB中是否存在新传 BSR;
资源调度模块， 用于根据新传 BSR为终端分配上行资源， 或在接收所 述重传 BSR时刻前新传 TB中不存在新传 BSR时， 根据接收的重传 BSR 为终端分配上行资源。
与现有技术相比， 本发明的有益效果在于： 本发明通过提供 MAC层上 行动态调度的方法和装置， 解决了 LTE系统中 MAC上行动态调度不足的 问题， 避免了对相同数据的重复调度， 减少了空口资源浪费。 附图说明
图 1是现有技术提供的 LTE系统示意图；
图 2是本发明实施例提供的 MAC层上行动态调度的方法流程图； 图 3是本发明实施例提供的 MAC层上行动态调度流程图；
图 4是本发明实施例提供的 FDD中 MAC层上行动态调度流程图； 图 5是本发明实施例提供的 TDD中 MAC层上行动态调度流程图； 图 6是本发明实施例提供的 MAC层上行动态调度的装置示意图。 具体实施方式
以下结合附图对本发明的优选实施例进行详细说明， 应当理解， 以下 所说明的优选实施例仅用于说明和解释本发明， 并不用于限制本发明。
图 2显示了本发明实施例提供的 MAC层上行动态调度的方法流程图， 如图 2所示， 步驟包括：
步驟 201: 基站侧接收终端上报的緩沖区状态报告（BSR, Buffer Status Reporting ), 并判断所述 BSR是新传传输块（ TB , Transport Block ) 中的新 传 BSR还是重传 TB中的重传 BSR;
步驟 202: 当判断所述 BSR是新传 BSR时， 基站侧根据所述新传 BSR 为终端分配上行资源；
步驟 203: 当判断所述 BSR是重传 BSR时， 基站侧根据接收所述重传 BSR时刻前接收的新传 BSR, 为终端分配上行资源。
进一步地， 所述步驟 203包括： 当判断基站侧接收的 BSR是重传 BSR 时， 基站侧进一步判断所述重传 BSR是否属于第一次重传 TB;
若判断所述重传 BSR属于第一次重传 TB, 则基站侧判断在接收所述 TB前的第一预定时间内新传 TB中是否存在新传 BSR;
若存在新传 BSR, 则丟弃所述重传 BSR, 否则， 根据所述重传 BSR为 终端分配上行资源。
所述第一预定时间等于重传次数 1 乘以往返时延（RTT, Round Trip Time )。
进一步地， 所述步驟 203还包括：
当判断所述重传 BSR不属于第一次重传 TB时， 基站侧判断所述重传 BSR是否属于第二次重传 TB;
若判断所述重传 BSR属于第二次重传 TB, 则基站侧判断在接收所述 TB前的第二预定时间内新传 TB中是否存在新传 BSR;
若存在新传 BSR, 则丟弃所述重传 BSR, 否则根据所述重传 BSR, 为 终端分配上行资源。
所述第二预定时间等于重传次数 2乘以 RTT。
进一步地， 所述步驟 203还包括：
当判断所述重传 BSR不属于第二次重传 TB时， 基站侧判断所述重传 BSR是否属于第三次重传 TB;
若判断所述重传 BSR属于第三次重传 TB, 则基站侧判断在接收所述 TB前的第三预定时间内新传 TB中是否存在新传 BSR;
若存在新传 BSR, 则丟弃所述重传 BSR, 否则根据所述重传 BSR, 为 终端分配上行资源。
所述第三预定时间等于重传次数 3乘以 RTT。
在 FDD系统中， 所述 RTT为 8个 ΤΉ, 在 TDD系统中， 所述 RTT为 10个 TTI。
图 3显示了本发明实施例提供的 MAC层上行动态调度流程图， 如图 3 所示： 步驟包括：
步驟 301: 基站侧接收到终端上报的 BSR;
步驟 302: 基站侧判断所述 BSR是新传 TB中的新传 BSR, 还是重传 TB中重传的 BSR, 如果是重传 TB中的重传 BSR, 则执行步驟 303, 如果 是新传 TB中的新传 BSR, 则执行步驟 305;
步驟 303: 基站侧判断接收重传 BSR时刻以前一段时间内新传 TB 中 是否存在新传 BSR, 如果存在， 则执行步驟 304, 否则执行步驟 305; 所述 一段时间针对不同的系统而定；
步驟 304: 丟弃所述重传 BSR;
步驟 305: 基站侧根据终端上报的重传 BSR进行动态调度， 为终端分 配上行资源。
MAC层上行资源的动态调度结束。
上述步驟 305 中， 所述一段时间针对不同的系统而定。 下面以 LTE FDD系统和 LTE TDD系统为例， 对 MAC上行动态调度作进一步的详细描 述。
图 4显示了本发明实施例提供的 FDD中 MAC层上行动态调度流程图， 如图 4所示， 假设在 FDD系统中， HARQ进程数目为 8个， RTT为 8个 TTI, 假设重传次数设为 3, 即新传次数和重传次数为 4, MAC层上行动态 调度步驟包括：
步驟 401 : 基站侧接收到终端上报的 BSR;
步驟 402: 基站侧判断所述 BSR是新传 TB中的新传 BSR, 还是重传 TB中的重传 BSR, 如果是重传 TB中的重传 BSR, 则执行步驟 403, 如果 是新传 TB中的新传 BSR, 则执行步驟 409;
步驟 403:基站侧判断所述重传 BSR是否属于第一次重传 TB,如果是， 则执行步驟 404, 否则执行步驟 405;
步驟 404: 基站侧判断接收所述重传 BSR时刻前的 1个 RTT内， 即 8 个 ΤΉ内， 新传 TB中是否存在新传 BSR, 如果不存在， 则执行步驟 409, 否则丟弃所述重传 BSR, 结束流程；
步驟 405:基站侧判断所述重传 BSR是否属于第二次重传 TB,如果是， 则执行步驟 406, 否则执行步驟 407;
步驟 406: 基站侧判断接收所述重传 BSR时刻前的 2个 RTT内， 即 16 个 ΤΉ内， 新传 TB中是否存在新传 BSR, 如果不存在， 则执行步驟 409, 否则丟弃所述重传 BSR, 结束流程；
步驟 407:基站侧判断所述重传 BSR是否属于第三次重传 TB,如果是， 则执行步驟 408, 否则结束流程； 步驟 408: 基站侧判断接收所述重传 BSR时刻前的 3个 RTT内， 即 24 个 ΤΉ内， 新传 TB中是否存在新传 BSR, 如果不存在， 则执行步驟 409, 否则丟弃所述重传 BSR, 结束流程；
步驟 409: 基站侧根据所述重传 BSR进行动态调度， 给终端分配上行 资源。
LTE FDD系统的 MAC层上行资源动态调度结束。
图 5显示了本发明实施例提供的 TDD中 MAC层上行动态调度流程图， 如图 5所示， 以 TDD系统的上下行子帧配置 1 , 即上下行子帧比例为 2:3 的上行调度为例， HARQ 进程数目为 4个， RTT为 10个 TTI, 设重传次 数设为 3, 即新传次数和重传次数为 4。 MAC层上行动态调度步驟包括： 步驟 501 : 基站侧接收到终端上报的 BSR;
步驟 502: 基站侧判断所述 BSR是新传 TB中的新传 BSR, 还是重传 TB中的重传 BSR, 如果是重传 TB中的重传 BSR, 则执行步驟 503, 如果 是新传 TB中的新传 BSR, 则执行步驟 509;
步驟 503:基站侧判断所述重传 BSR是否属于第一次重传 TB,如果是， 则执行步驟 504, 否则执行步驟 505;
步驟 504: 基站侧判断接收所述重传 BSR时刻前的 1个 RTT内， 即 10 个 ΤΉ内， 新传 TB中是否存在新传 BSR, 如果不存在， 则执行步驟 509, 否则丟弃所述重传 BSR, 并结束流程；
步驟 505:基站侧判断所述重传 BSR是否属于第二次重传 TB,如果是， 则执行步驟 506, 否则执行步驟 507;
步驟 506: 基站侧判断接收所述重传 BSR时刻前的 2个 RTT内， 即 20 个 ΤΉ内， 新传 TB中是否存在新传 BSR, 如果不存在， 则执行步驟 509, 否则丟弃所述重传 BSR, 并结束流程；
步驟 507:基站侧判断所述重传 BSR是否属于第三次重传 TB,如果是， 则执行步驟 508, 否则结束流程；
步驟 508: 基站侧判断接收所述重传 BSR时刻前 3个 RTT内， 即 30 个 ΤΉ内， 新传 TB中是否存在新传 BSR, 如果不存在， 则执行步驟 509, 否则丟弃所述重传 BSR, 结束流程；
步驟 509: 基站侧根据所述重传 BSR进行动态调度， 为终端分配上行 资源。
LTE TDD系统的 MAC层上行资源动态调度结束。
图 6显示了本发明实施例提供的 MAC层上行动态调度的装置示意图， 如图 6所示， 装置包括：
BSR接收模块， 用于接收终端上报的 BSR, 并判断所述 BSR是新传 TB中的新传 BSR还是重传 TB中的重传 BSR;
BSR判断模块， 用于在接收重传 BSR时， 判断接收所述重传 BSR的 时刻前接收到的新传 TB中是否存在新传 BSR;
资源调度模块， 用于根据新传 BSR为终端分配上行资源， 或在接收所 述重传 BSR时刻前新传 TB中不存在新传 BSR时， 根据接收的重传 BSR 为终端分配上行资源。
所述 BSR接收模块接收终端上报的 BSR,判断所述 BSR是新传 TB中 的新传 BSR还是重传 TB中的重传 BSR, 当判断所述 BSR是重传 BSR时， 进一步判断重传 BSR属于第几次重传 TB。 如果所述 BSR是新传 BSR, 则 所述 BSR接收模块将该新传 BSR传送至所述资源调度模块，使所述资源调 度模块根据该新传 BSR为终端分配上行资源； 如果所述 BSR是重传 BSR, 则所述 BSR接收模块将该重传 BSR传送至所述 BSR判断单元， 所述 BSR 判断单元根据该重传 BSR属于第几次重传的 TB, 判断接收所述重传 BSR 的时刻前接收到的新传 TB 中是否存在新传 BSR, 如果不存在， 则将该重 传 BSR传送至所述资源调度模块， 使所述资源调度模块根据所述重传 BSR 为终端分配上行资源。
进一步地， 若所述重传 BSR属于第一次重传 BSR, 则所述 BSR判断 单元判断接收所述重传 BSR的时刻前 1个 RTT内接收到的新传 TB中是否 存在新传 BSR; 若所述重传 BSR属于第二次重传 BSR, 则所述 BSR判断 单元判断接收所述重传 BSR的时刻前 2个 RTT内接收到的新传 TB中是否 存在新传 BSR; 若所述重传 BSR属于第三次重传 BSR, 则所述 BSR判断 单元判断接收所述重传 BSR的时刻前 3个 RTT内接收到的新传 TB中是否 存在新传 BSR。 也就是说， 若所述重传 BSR属于第 N次重传 BSR, 则所述 BSR判断单元判断接收所述重传 BSR的时刻前 N个 RTT内接收到的新传 TB中是否存在新传 BSR。
所述 RTT针对不同的系统而定， 例如在 FDD系统中， 所述 RTT为 8 个 ΤΉ。 在 FDD系统中， 所述 RTT为 10个 TTI。
综上所述， 本发明的有益效果在于： 本发明解决了 LTE 系统中 MAC 上行动态调度不足的问题， 避免了对相同数据的重复调度， 减少了空口资 源浪费。
尽管上文对本发明进行了详细说明， 但是本发明不限于此， 本技术领 域技术人员可以根据本发明的原理进行各种修改。 因此， 凡按照本发明原 理所作的修改， 都应当理解为落入本发明的保护范围。

Claims

权利要求书
1、 一种 MAC层上行动态调度的方法， 其特征在于， 所述方法包括： A )基站侧接收终端上报的緩沖区状态报告 BSR, 并判断所述 BSR是 新传传输块 TB中的新传 BSR还是重传 TB中的重传 BSR;
B )当判断所述 BSR是新传 BSR时，基站侧根据所述新传 BSR为终端 分配上行资源；
C )当判断所述 BSR是重传 BSR时，基站侧根据接收所述重传 BSR时 刻前接收的新传 BSR, 为终端分配上行资源。
2、 根据权利要求 1所述的方法， 其特征在于， 所述步驟 C ) 包括： 当判断基站侧接收的 BSR是重传 BSR时，基站侧进一步判断所述重传
BSR是否属于第一次重传 TB;
若判断所述重传 BSR属于第一次重传 TB , 则基站侧判断在接收所述 TB前的第一预定时间内新传 TB中是否存在新传 BSR;
若存在新传 BSR, 则丟弃所述重传 BSR, 否则， 根据所述重传 BSR为 终端分配上行资源。
3、 根据权利要求 2所述的方法， 其特征在于， 所述第一预定时间等于 重传次数 1乘以往返时延 RTT。
4、 根据权利要求 2所述的方法， 其特征在于， 所述步驟 C )还包括： 当判断所述重传 BSR不属于第一次重传 TB时， 基站侧判断所述重传
BSR是否属于第二次重传 TB;
若判断所述重传 BSR属于第二次重传 TB, 则基站侧判断在接收所述 TB前的第二预定时间内新传 TB中是否存在新传 BSR;
若存在新传 BSR, 则丟弃所述重传 BSR, 否则根据所述重传 BSR, 为 终端分配上行资源。
5、 根据权利要求 4所述的方法， 其特征在于， 所述第二预定时间等于 重传次数 2乘以 RTT。
6、 根据权利要求 4所述的方法， 其特征在于， 所述步驟 C )还包括： 当判断所述重传 BSR不属于第二次重传 TB时， 基站侧判断所述重传
BSR是否属于第三次重传 TB;
若判断所述重传 BSR属于第三次重传 TB, 则基站侧判断在接收所述 TB前的第三预定时间内新传 TB中是否存在新传 BSR;
若存在新传 BSR, 则丟弃所述重传 BSR, 否则根据所述重传 BSR, 为 终端分配上行资源。
7、 根据权利要求 6所述的方法， 其特征在于， 所述第三预定时间等于 重传次数 3乘以 RTT。
8、 根据权利要求 1至 7任意一项所述的方法， 其特征在于， 在频分双 工 FDD系统中 , 所述 RTT为 8个传输时间间隔 TTI。
9、 根据权利要求 1至 7任意一项所述的方法， 其特征在于， 在时分双 工 TDD系统中， 所述 RTT为 10个 ΤΉ。
10、 一种 MAC层上行动态调度的装置， 其特征在于， 包括：
BSR接收模块， 用于接收终端上报的 BSR, 并判断所述 BSR是新传 TB中的新传 BSR还是重传 TB中的重传 BSR;
BSR判断模块， 用于在接收重传 BSR时， 判断接收所述重传 BSR的 时刻前接收到的新传 TB中是否存在新传 BSR;
资源调度模块， 用于根据新传 BSR为终端分配上行资源， 或在接收所 述重传 BSR时刻前新传 TB中不存在新传 BSR时， 根据接收的重传 BSR 为终端分配上行资源。
PCT/CN2011/081198 2011-05-25 2011-10-24 一种mac层上行动态调度的方法和装置 WO2012159413A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2011101368394A CN102802263A (zh) 2011-05-25 2011-05-25 一种mac层上行动态调度的方法和装置
CN201110136839.4 2011-05-25

Publications (1)

Publication Number Publication Date
WO2012159413A1 true WO2012159413A1 (zh) 2012-11-29

Family

ID=47201200

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/081198 WO2012159413A1 (zh) 2011-05-25 2011-10-24 一种mac层上行动态调度的方法和装置

Country Status (2)

Country Link
CN (1) CN102802263A (zh)
WO (1) WO2012159413A1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103973414B (zh) * 2014-04-29 2018-03-09 华为技术有限公司 一种数据传输方法及装置
CN107613524B (zh) * 2016-07-12 2022-08-19 中兴通讯股份有限公司 数据更新方法和装置及系统、基站
CN106358310B (zh) * 2016-08-29 2019-11-08 吉林大学 基于DRX周期的VoLTE业务上行动态调度优化方法
CN107864498A (zh) * 2017-11-13 2018-03-30 苏州微站通信科技有限公司 在lte小基站系统中改进中继站传输性能的方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101583193A (zh) * 2009-06-24 2009-11-18 中国科学院计算技术研究所 一种lte系统中基站端上行无线资源分配方法及装置
WO2010028157A1 (en) * 2008-09-03 2010-03-11 Qualcomm Incorporated Buffer status report triggers in wireless communications
CN101772174A (zh) * 2009-01-04 2010-07-07 大唐移动通信设备有限公司 提高上行调度性能的方法及用户设备
US20100189006A1 (en) * 2009-01-29 2010-07-29 Samsung Electronics Co., Ltd. Method and system for computing and sending resource requests and avoiding deadlock situations in mobile communication system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101557581A (zh) * 2009-05-12 2009-10-14 华为技术有限公司 获取缓存状态报告的方法、装置及设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010028157A1 (en) * 2008-09-03 2010-03-11 Qualcomm Incorporated Buffer status report triggers in wireless communications
CN101772174A (zh) * 2009-01-04 2010-07-07 大唐移动通信设备有限公司 提高上行调度性能的方法及用户设备
US20100189006A1 (en) * 2009-01-29 2010-07-29 Samsung Electronics Co., Ltd. Method and system for computing and sending resource requests and avoiding deadlock situations in mobile communication system
CN101583193A (zh) * 2009-06-24 2009-11-18 中国科学院计算技术研究所 一种lte系统中基站端上行无线资源分配方法及装置

Also Published As

Publication number Publication date
CN102802263A (zh) 2012-11-28

Similar Documents

Publication Publication Date Title
US11778599B2 (en) Method and apparatus of handling time gap for sidelink hybrid automatic request (HARQ) in network scheduling mode in a wireless communication system
US11387946B2 (en) Reliable ultra-low latency communications
US10314032B2 (en) Method and base station identifying PUCCH for processing feedback of user equipment
CN108631964B (zh) 一种数据传输方法和相关设备
US10178676B2 (en) Data transmission method, device, and system
CN108566673B (zh) 无线通信系统和在无线通信系统中进行无线通信的方法
US9204429B2 (en) Method and apparatus for adjusting HARQ timing
EP3565148B1 (en) Data transmission method and apparatus
US8204011B2 (en) Method and apparatus for transmitting and receiving packet data between a node B and A UE using HARQ in a mobile communication system
WO2017193730A1 (zh) 自动重传的调度方法、终端、网络侧设备以及存储媒介
WO2011116680A1 (zh) 多子帧调度方法、系统和设备
WO2012097722A1 (zh) 长期演进系统中演进基站进行调度的方法、基站及系统
WO2013071754A1 (zh) 下行控制信息传输方法和系统
CN108039939B (zh) 物联网组播业务的harq反馈方法及装置
CN107295677B (zh) 执行空闲信道评估的反馈方法及装置
WO2014110875A1 (zh) 数据传输方法、基站和用户设备
WO2020143731A1 (zh) 用于传输数据的方法、通信设备和网络设备
WO2012083624A1 (zh) 一种半静态调度业务资源释放方法及系统
US10075264B2 (en) Data transmission method, device, and system
WO2010111858A1 (zh) 资源调度方法及用户设备
WO2013044880A1 (zh) 一种数据传输方法和装置
WO2012155436A1 (zh) 上行sps激活的确定方法、设备及系统
CN106171004A (zh) 一种rlc数据包分流方法及基站
CN102355336A (zh) 一种bsr触发方法、装置及用户设备
WO2018121643A1 (zh) 一种数据传输方法、装置及系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11866386

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11866386

Country of ref document: EP

Kind code of ref document: A1