WO2009079819A1 - Procédé permettant d'envoyer, de transmettre et d'ordonnancer un message système dans un système d'évolution à long terme - Google Patents

Procédé permettant d'envoyer, de transmettre et d'ordonnancer un message système dans un système d'évolution à long terme Download PDF

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Publication number
WO2009079819A1
WO2009079819A1 PCT/CN2007/003568 CN2007003568W WO2009079819A1 WO 2009079819 A1 WO2009079819 A1 WO 2009079819A1 CN 2007003568 W CN2007003568 W CN 2007003568W WO 2009079819 A1 WO2009079819 A1 WO 2009079819A1
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Prior art keywords
system message
radio frame
scheduling information
block
scheduling
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PCT/CN2007/003568
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English (en)
French (fr)
Inventor
Zhongda Du
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Zte Corporation
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Application filed by Zte Corporation filed Critical Zte Corporation
Priority to PCT/CN2007/003568 priority Critical patent/WO2009079819A1/zh
Priority to MX2010006366A priority patent/MX2010006366A/es
Priority to JP2010535198A priority patent/JP2011505091A/ja
Priority to EP08757535.3A priority patent/EP2222128B1/en
Priority to RU2010123653/08A priority patent/RU2452096C2/ru
Priority to US12/744,461 priority patent/US20100265899A1/en
Priority to PCT/CN2008/071124 priority patent/WO2009076803A1/zh
Priority to CA2707744A priority patent/CA2707744C/en
Priority to BRPI0822067-0A priority patent/BRPI0822067A2/pt
Priority to KR1020107011642A priority patent/KR101085338B1/ko
Publication of WO2009079819A1 publication Critical patent/WO2009079819A1/zh
Priority to HK10110354.7A priority patent/HK1143922A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signaling for the administration of the divided path
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a method for transmitting, transmitting, and scheduling system messages in an LTE (3rd Generation Partnership Project Long Term Evolution) system. Background technique
  • the LTE system is mainly composed of a terminal, a base station, and a core network.
  • a network composed of base stations is called a Radio Access Network (RAN), and is responsible for access layer transactions, such as management of radio resources.
  • RAN Radio Access Network
  • Each base station can be connected to one or more core network nodes (Core Network, abbreviated as CN).
  • the core network is responsible for non-access layer transactions, such as location updates, and is the anchor point for the user plane.
  • a terminal is a device that can communicate with a cellular wireless communication network, such as a mobile phone or a laptop.
  • the basic unit of system time in an LTE system is a radio frame.
  • the length of the radio frame is 10 ms, and the number of radio frames includes 10 subframes, each of which is 1 millisecond.
  • System messages are messages used to broadcast system configuration parameters.
  • MIB main system message blocks
  • SU-1 scheduling information block 1
  • SU-X scheduling information blocks
  • SU-X scheduling information blocks
  • Each SU-X may include one or more system information blocks SIB, that is, SIBs mapped to the same SU-X have the same scheduling law in the time domain.
  • the MIB includes scheduling information of some physical layer parameters, system frame numbers SFN and SU-1.
  • SU-1 includes scheduling information of other SU-Xs, carrier number list PLMN LIST, cell identity, access control parameters, and the like.
  • SU-X includes other content that needs to be broadcast, including common channel configuration information, cell reselection information, and so on.
  • the MIB is broadcast on the system broadcast channel PBCH, and the resource configuration of the PBCH in the time domain and the frequency domain is static.
  • the repetition period of the MIB is fixed, that is, its content is repeated every 40 ms.
  • the network will send the same MIB content on each radio frame of 40ms.
  • the wireless frame number in which the MIB is located refers to the first time in the MIB repetition period.
  • the MIB is always on subframe 0 of the radio frame in which it is located.
  • SU-1 and SU-X are carried by the downlink shared channel.
  • the scheduling period of SU-1 is also fixed, that is, every 80ms.
  • SU-1 occupies one subframe, and the position of the subframe on the radio frame where SU-1 is located is also fixed.
  • System message blocks broadcast on one subframe are carried on the radio resources of the system.
  • the control parameters related to these radio resources such as modulation and coding parameters MCS, transmission format, etc., are provided by the following dedicated control channel PDCCH, ie A dynamic scheduling method is adopted.
  • the order in which the UE reads the system message is that the MIB is read first, and then the scheduling information of SU-1 is obtained, and then the content of SU-1 is read. From SU-1, the terminal can obtain scheduling information of other SU-Xs, and then read the contents of these system message blocks.
  • the radio frame in which the SU-1 is in the time domain and the radio frame where the MIB is located are in the same position.
  • the scheduling period of SU-1 is twice the repetition period of the MIB, in the range of wireless frames with MIB, some have SU-1, and some do not.
  • the scheduling information about SU-1 on the MIB is actually a bit flag indicating whether SU-1 exists in the time range of the radio frame in which the MIB is located.
  • the content on the MIB needs to be as small as possible. Adding one bit means that the PBCH channel needs to increase the rate by 25 bits/second.
  • the technical problem to be solved by the present invention is to provide a method for transmitting, transmitting, and scheduling system messages in an LTE system, which can improve the coverage of the MIB.
  • the present invention provides a method for transmitting a system message in a third-generation partner program long-term evolution system, including:
  • the base station transmits a system message, and carries a scheduling information block 1 on the fixed radio frame, and the radio frame carrying the scheduling information block 1 and the radio frame transmitting the main system message block for the first time in the main system message block repetition period overlap in time.
  • the sending method specifically includes:
  • the base station sends a system message, and the radio frame with the system frame number SFN-M is used as the main system message block.
  • the radio frame of the primary system message block is sent for the first time in the repetition period, and the scheduling information block 1 is carried on the radio frame with the system frame number SFN-S1;
  • the remainder of SFN-M divided by 4 is a, a is any one of 0, 1, 2, 3; the remainder of SFN-S1 divided by 8 is a+4b, and b is 0 or 1.
  • the primary system message block repetition period is 40 ⁇ seconds
  • the scheduling information block 1 has a scheduling period of 80 milliseconds.
  • the present invention also provides a method for transmitting system messages in a third generation partnership plan long term evolution system, including:
  • the base station sends a system message, and carries the scheduling information block 1 on the fixed radio frame, and the radio frame carrying the scheduling information block 1 overlaps with the radio frame of the main system message block for the first time in the main system message block repetition period;
  • the terminal When the terminal receives the system message, it receives the main system message block and the scheduling information block 1 in the fixed radio frame.
  • the transmission method specifically includes:
  • the base station sends a system message, and the radio frame with the system frame number SFN-M is used as the radio frame for transmitting the main system message block for the first time in the main system message block repetition period, and carries the scheduling on the radio frame with the system frame number SFN-S1.
  • the terminal When receiving the system message, the terminal receives the first primary system message block in the primary system message block repetition period on the radio frame with the system frame number SFN-M, and receives the scheduling information on the radio frame with the system frame number SFN-S1. Block 1;
  • the remainder of SFN-M divided by 4 is a, a is any one of 0, 1, 2, 3; the remainder of SFN-S1 divided by 8 is a+4b, and b is 0 or 1.
  • the primary system message block repetition period is 40 ⁇ seconds
  • the scheduling information block 1 has a scheduling period of 80 ⁇ seconds.
  • the transmitting method further includes:
  • the base station sends a system message, and the scheduling information block 1 carries a scheduling signal of other scheduling information blocks.
  • the scheduling information of the other scheduling information blocks is obtained from the scheduling information block 1, thereby receiving other scheduling message blocks.
  • the present invention also provides a method for scheduling system messages in a third generation partnership plan long term evolution system, including:
  • the scheduling information block 1 is carried on a fixed radio frame, and the radio frame carrying the scheduling information block 1 and the radio frame transmitting the main system message block for the first time in the main system message block repetition period overlap in time.
  • scheduling method specifically includes:
  • the radio frame with the system frame number of SFN-M is used as the radio frame for transmitting the main system message block for the first time in the main system message block repetition period, and the scheduling information block 1 is carried in the radio frame with the system frame number of SFN-S1;
  • the remainder of SFN-M divided by 4 is a, a is any one of 0, 1, 2, 3; the remainder of SFN-S1 divided by 8 is a+4b, and b is 1 or 0.
  • the primary system message block repetition period is 40 milliseconds
  • the scheduling information block 1 has a scheduling period of 80 milliseconds.
  • the technical solution of the present invention can omit the scheduling information bits of the SU-1 in the MIB by curing the relative scheduling relationship between the SU-1 and the MIB, and can improve the coverage of the MIB under the same transmission condition, and improve the terminal acceptance MIB. Reliability.
  • FIG. 2 is a flowchart of a specific implementation of a method for transmitting a system message in an LTE system according to the present invention
  • FIG. 3 is a schematic structural diagram of a system message in an application example of the present invention. Preferred embodiment of the invention The technical solution of the present invention will be described in more detail below with reference to the accompanying drawings and embodiments.
  • the present invention provides a method and a method for transmitting a system message in an LTE system.
  • the core idea of the present invention is: to solidify the scheduling rule of the SU-1 with respect to the MIB, that is, to carry the SU-1 on a fixed radio frame.
  • the scheduling information bit indicating SU-1 can be omitted.
  • the method for transmitting system messages in the LTE system includes:
  • the base station sends a system message, carrying SU-1 on the fixed radio frame, and the radio frame carrying the SU-1 and the radio frame transmitting the MIB for the first time in the MIB repetition period overlap in time.
  • the step specifically includes: the base station sends a system message, and the radio frame with the system frame number of SFN-M is used as the first radio frame of the MIB in the MIB repetition period, and carries the SU- in the radio frame with the system frame number SFN-S1.
  • the remainder of SFN-M divided by 4 is a, a can be any one of 0, 1, 2, 3; the remainder of SFN-S1 divided by 8 is a+4b, and b is a constant.
  • b is 0 or 1.
  • the step may further include: the repetition period of the MIB is 40 milliseconds, and the scheduling period of the SU-1 is 80 milliseconds; the base station broadcasts the MIB on the PBCH, and carries the MIB in the subframe 0 of the radio frame; SU-1 and SU-X are carried on the shared channel; SU-1 is carried in a fixed subframe on the radio frame; scheduling information of SU-X is carried in SU-1
  • This step is also a method for transmitting system messages in the LTE system.
  • the terminal receives the system message and receives the MIB and SU-1 on the fixed radio frame.
  • the terminal receives the MIB repetition period on the radio frame with the system frame number SFN-M.
  • the first MIB can then receive the MIB that is repeated later in the MIB repetition period on the subsequent radio frame; and receive the SU-1 on the radio frame with the system frame number SFN-S1.
  • the terminal can obtain scheduling information of other SU-Xs from SU-1, and then receive these system message blocks.
  • the scheduling method of the system message in the LTE system includes:
  • the radio frame with the system frame number SFN-M is used as the radio frame for the first time in the MIB repetition period to transmit the MIB, and the radio frame with the system frame number SFN-S1 carries the SU-1;
  • the SFN-M The remainder divided by 4 is a, a can be any one of 0, 1, 2, 3; the remainder of SFN-S1 divided by 8 is a+4b, and b is a constant, which is 1 or 0.
  • the repetition period of the MIB is 40 milliseconds, and the scheduling period of the SU-1 is 80 milliseconds;
  • the MIB is broadcast on the PBCH, and its position is in the subframe 0 of each radio frame;
  • SU-1 and SU-X are in The bearer is carried on the downlink shared channel;
  • the location of SU-1 is in a fixed subframe on the radio frame, and
  • SU-1 carries the scheduling information of SU-X.
  • the radio frame with the system frame number SFN-M is used as the radio frame for transmitting the MIB for the first time in the MIB repetition period, and the MIB is carried in the subframe 0 of the radio frame.
  • the remainder of the SFN-M divided by 4 is a, a is 0; as shown in FIG. 3, that is, the radio frame with the system frame number of 12, 16, 20, 24, ... is the first to send the MIB in the MIB repetition period.
  • the MIB repetition period is 40ms
  • the SU-1 scheduling period is 80ms.
  • the base station carries SU-1 in subframe 5 of the radio frame of system frame numbers 16, 24, ....
  • the radio frame is the first radio frame to be sent by the MIB in the MIB repetition period, where the subframe 0 on the PBCH carries the MIB, and the fifth channel of the downlink shared channel
  • the sub-frame carries SU-1.
  • the terminal can receive the MIB and the SU-1 according to the rule, and then obtain the scheduling information of the other scheduling information blocks from the SU-1, so as to read the contents of the scheduling message blocks, so there is no need to carry the SU- in the MIB. 1 scheduling information.
  • the technical solution of the present invention can omit the scheduling information bits of the SU-1 in the MIB by curing the relative scheduling relationship between the SU-1 and the MIB, and can improve the coverage of the MIB under the same transmission condition, and improve the terminal acceptance MIB. Reliability.

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

Description

一种 LTE系统中系统消息的发送、 传输及调度方法
技术领域
本发明涉及无线通信领域, 尤其涉及一种 LTE (第三代合作伙伴计划长 期演进) 系统中系统消息的发送、 传输以及调度方法。 背景技术
图 1所示, LTE系统主要由终端, 基站和核心网组成。 基站组成的网络 称为无线接入网( Radio Access Network, 缩写为 RAN ) , 负责接入层事务, 比如无线资源的管理。基站之间可以根据实际情况存在物理或者逻辑上的连 接, 比如图 1中的基站 1和基站 1或者基站 3。 每个基站可以和一个或者一 个以上的核心网节点 (Core Network, 缩写为 CN )连接。 核心网负责非接 入层事务, 比如位置更新等, 并且是用户面的锚点。 终端是指可以和蜂窝无 线通讯网络通讯的各种设备, 比如移动电话或者笔记本电脑等。
LTE系统中系统时间的基本单元是无线帧。 无线帧的长度是 10ms, — 个无线帧包括 10个子帧, 每个子帧 1毫秒。
系统消息是用来广播系统配置参数的消息。 在 LTE 中按照功能划分, 主要有主系统消息块, 简称 MIB, 调度信息块 1, 简称 SU-1 , 其他的调度 信息块, 在本文中简称 SU-X。 每个 SU-X上可能包括 1个或者多个系统信 息块 SIB, 也就是说映射到相同 SU-X的 SIB在时域上有相同的调度规律。 MIB包括部分物理层参数, 系统帧号 SFN和 SU-1的调度信息。 SU-1包括 其他 SU-X的调度信息,运营商号码列表 PLMN LIST, 小区标识, 接入控制 参数等等。 SU-X包括了其他需要广播的内容, 包括公共信道配置信息, 小 区重选信息等等。
MIB在系统广播信道 PBCH上广播, PBCH在时域和频域上的资源配置 是静态的。 MIB的重复周期是固定的, 即每 40ms其内容重复一次。 为了提 高 MIB的覆盖范围, 网络在 40ms的每个无线帧上都会发送相同的 MIB的 内容。 本文中提到 MIB所在的无线帧号指的是在 MIB重复周期中第一次发 送 MIB的无线帧号。 MIB总是在所在的无线帧的 0号子帧上。 SU-1和 SU-X 是由下行的共享信道来承载的。 SU-1 的调度周期也是固定的, 即每 80ms 调度一次。 SU-1占用一个子帧, 该子帧在 SU-1所在的无线帧上的位置也是 固定的。在一个子帧上广播的系统消息块承载在系统的无线资源上, 这些无 线资源相关的控制参数, 比如调制和编码参数 MCS, 传输格式等等是由跟 随的专用控制信道 PDCCH来提供的, 即采用了动态调度的方法。
UE读取系统消息的顺序是, 先读取 MIB, 然后获得了 SU-1的调度信 息以后, 再读取 SU-1的内容。 从 SU-1中, 终端可以获得其他 SU-X的调度 信息, 从而再读取这些系统消息块的内容。
为了让终端在读取了 MIB以后, 尽快地读取 SU-1 , 在时域上 SU-1所 在无线帧和 MIB所在的无线帧在相同位置。 但是因为 SU-1 的调度周期是 MIB重复周期的两倍, 所以在有 MIB的无线帧范围内, 有的有 SU-1 , 有的 没有。在 MIB上关于 SU-1的调度信息实际上是一个比特的标记, 用来表示 该 MIB所在无线帧的时间范围内是否有 SU-1存在。
为了保证主系统消息块 MIB的覆盖范围, MIB上的内容需要尽可能地 少。 增加一个比特就意味着, PBCH信道需要增加 25比特 /秒的速率。
发明内容
本发明要解决的技术问题是提供一种 LTE 系统中系统消息的发送、 传 输及调度方法, 能提高 MIB的覆盖范围。
为了解决上述技术问题,本发明提供了一种第三代合作伙伴计划长期演 进系统中系统消息的发送方法, 包括:
基站发送系统消息, 在固定的无线帧上携带调度信息块 1 , 该携带调度 信息块 1 的无线帧和主系统消息块重复周期中第一次发送主系统消息块的 无线帧在时间上重叠。
进一步的, 所述发送方法具体包括:
基站发送系统消息, 将系统帧号为 SFN-M的无线帧作为主系统消息块 重复周期中第一次发送主系统消息块的无线帧, 在系统帧号为 SFN-S1的无 线帧上携带调度信息块 1;
其中, SFN-M除以 4的余数为 a, a为 0、 1、 2、 3中的任意一个数; SFN-S1除以 8的余数为 a+4b, b是 0或 1。
进一步的, 所述主系统消息块重复周期是 40亳秒, 所述调度信息块 1 的调度周期是 80毫秒。
本发明还提供了一种第三代合作伙伴计划长期演进系统中系统消息的 传输方法, 包括:
基站发送系统消息, 在固定的无线帧上携带调度信息块 1 , 该携带调度 信息块 1 的无线帧和主系统消息块重复周期中第一次发送主系统消息块的 无线帧在时间上重叠;
终端接收系统消息时,在固定的无线帧中接收主系统消息块和调度信息 块 1。
进一步的, 所述的传输方法具体包括:
基站发送系统消息, 将系统帧号为 SFN-M的无线帧作为主系统消息块 重复周期中第一次发送主系统消息块的无线帧, 在系统帧号为 SFN-S1的无 线帧上携带调度信息块 1;
终端接收系统消息时, 在系统帧号为 SFN-M的无线帧上接收主系统消 息块重复周期中的第一个主系统消息块, 在系统帧号为 SFN-S1的无线帧上 接收调度信息块 1;
其中, SFN-M除以 4的余数为 a, a为 0、 1、 2、 3中的任意一个数; SFN-S1除以 8的余数为 a+4b, b是 0或 1。
进一步的, 所述主系统消息块重复周期是 40亳秒, 所述调度信息块 1 的调度周期是 80亳秒。
进一步的, 所述的传输方法还包括:
基站发送系统消息, 在调度信息块 1 中携带其它调度信息块的调度信 终端接收系统消息时,从调度信息块 1中获得其它调度信息块的调度信 息, 从而再接收其它调度消息块。
本发明还提供了一种第三代合作伙伴计划长期演进系统中系统消息的 调度方法, 包括:
在固定的无线帧上携带调度信息块 1, 该携带调度信息块 1的无线帧和 主系统消息块重复周期中第一次发送主系统消息块的无线帧在时间上重叠。
进一步的, 所述的调度方法具体包括:
将系统帧号为 SFN-M的无线帧作为主系统消息块重复周期中第一次发 送主系统消息块的无线帧, 在系统帧号为 SFN-S1的无线帧中携带调度信息 块 1; 所述 SFN-M除以 4的余数为 a, a为 0、 1、 2、 3中的任意一个数; SFN-S1除以 8的余数为 a+4b, b为 1或 0。
进一步的, 所述主系统消息块重复周期是 40毫秒, 所述调度信息块 1 的调度周期是 80毫秒。
本发明的技术方案通过固化 SU-1和 MIB之间的相对调度关系,可以省 略 MIB中关于 SU-1的调度信息比特,在相同的发送条件下,可以提高 MIB 的覆盖范围, 提高终端接受 MIB的可靠性。
附图概述
图 1为现有技术中 LTE系统的组成示意图;
图 2为本发明的 LTE系统中系统消息的传输方法的具体实施流程图; 图 3为本发明应用实例中系统消息的结构示意图。 本发明的较佳实施方式 下面将结合附图及实施例对本发明的技术方案进行更详细的说明。
本发明提供了一种 LTE 系统中系统消息的传输方法和调度方法, 本发 明的核心思想是: 把 SU-1相对于 MIB的调度规律固化, 即在固定的无线帧 上携带 SU-1, 该携带 SU-1的无线帧和 MIB重复周期中第一次发送 MIB的 无线帧在时间上重叠; 终端接收系统消息时, 在固定的无线帧中接收 MIB 和 SU-1 ; 那么在 MIB中的这个表示 SU-1的调度信息比特就可以省略。
如图 2所示, 所述 LTE系统中系统消息的传输方法包括:
A、 基站发送系统消息, 在固定的无线帧上携带 SU-1 , 该携带 SU-1的 无线帧和 MIB重复周期中第一次发送 MIB的无线帧在时间上重叠。
本步骤具体包括: 基站发送系统消息, 将系统帧号为 SFN-M的无线帧 作为 MIB重复周期中第一次发送 MIB的无线帧, 在系统帧号为 SFN-S1的 无线帧上携带 SU-1。
其中, SFN-M除以 4的余数为 a, a可以是 0、 1、 2、 3中的任意一个数; SFN-S1除以 8的余数为 a+4b, b是常数。
b为 0或 1。
当取 b为 0时,在通讯协议中规定 SFN-S1%8 = SFN-M%4=a, a是 0, 1 , 2, 3中的任一个数; "%" 为取余。
当取 b为 1时, 在通讯协议中规定 SFN-S1%8 = SFN-M%4 + 4 = a + 4, a 是常数, 为 0, 1 , 2, 3中的任一个数; "%,, 为取余。
本步骤还可以包括: 所述 MIB的重复周期是 40毫秒, 所述 SU-1的调 度周期是 80毫秒; 基站在 PBCH上广播 MIB, 在无线帧的 0号子帧中携带 MIB; 在下行的共享信道上承载 SU-1和 SU-X; 在无线帧上的固定子帧中携 带 SU-1; SU-1中携带 SU-X的调度信息
本步骤也是 LTE系统中系统消息的发送方法。
B、 终端接收系统消息, 在固定的无线帧上接收 MIB和 SU-1。
具体而言,终端在系统帧号为 SFN-M的无线帧上接收 MIB重复周期中 的第一个 MIB, 然后可以在后继无线帧上接收 MIB重复周期中后面重复的 MIB; 在系统帧号为 SFN-S1的无线帧上接收 SU-1。
终端可以从 SU-1中获得其他 SU-X的调度信息, 从而再接收这些系统 消息块。
采用了上述方法后, MIB中无须再用一个比特来表示该 MIB所在无线 帧的时间范围内是否有 SU-1存在, 因此, 在相同的发送条件下, 可以提高 MIB的覆盖范围。
所述 LTE系统中系统消息的调度方法包括:
在固定的无线帧上携带 SU-1 , 该携带 SU-1的无线帧和 MIB重复周期 中第一次发送 MIB的无线帧在时间上重叠。
进一步的,将系统帧号为 SFN-M的无线帧作为 MIB重复周期中第一次 发送 MIB 的无线帧, 在系统帧号为 SFN-S1 的无线帧中携带 SU-1; 所述 SFN-M除以 4的余数为 a, a可以是 0、 1、 2、 3中的任意一个数; SFN-S1 除以 8的余数为 a+4b, b是常数, 为 1或 0。
进一步的, MIB的重复周期是 40毫秒, 所述 SU-1的调度周期是 80毫 秒; MIB在 PBCH上广播, 其位置在各无线帧的 0号子帧中; SU-1和 SU-X 在下行的共享信道上承载; SU-1的位置在无线帧上的固定子帧中, SU-1中 携带 SU-X的调度信息。
下面用一个应用实例来进一步说明本发明。
如图 3所示, 基站发送的系统消息中, 将系统帧号为 SFN-M的无线帧 作为 MIB重复周期中第一次发送 MIB的无线帧, 在无线帧的 0号子帧中携 带 MIB, 所述 SFN-M除以 4的余数为 a, a为 0; 如图 3所示, 即系统帧号 为 12、 16、 20、 24……的无线帧为 MIB重复周期中第一次发送 MIB的无线 帧。 MIB重复周期为 40ms, SU-1的调度周期为 80ms。
在系统帧号为 SFN-S1的无线帧的 5号子帧中携带 SU-1; SFN-S1除以 8的余数为 a+4b, b为 0; 如图 3所示, 即基站在系统帧号为 16、 24……的 无线帧的 5号子帧中携带 SU-1。
比如对于系统帧号为 16的无线帧来说,该无线帧为本 MIB重复周期中 第一次发送 MIB的无线帧, 其中, PBCH上的 0号子帧中携带 MIB, 下行 共享信道的 5号子帧中携带 SU-1。
终端按照该规律进行接收 MIB和 SU-1即可, 然后从 SU-1中获得其它 调度信息块的调度信息, 从而再读取这些调度消息块的内容, 因此无须在 MIB中携带是否有 SU-1的调度信息。
当然, 本发明还可有其他多种实施例, 在不背离本发明精神及其实质的 情况下, 熟悉本领域的技术人员当可根据本发明作出各种相应的改变和变 形 , 但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。
工业实用性
本发明的技术方案通过固化 SU-1和 MIB之间的相对调度关系,可以省 略 MIB中关于 SU-1的调度信息比特,在相同的发送条件下,可以提高 MIB 的覆盖范围, 提高终端接受 MIB的可靠性。

Claims

权 利 要 求 书
1、 一种第三代合作伙伴计划长期演进系统中系统消息的发送方法, 其 特征在于, 包括:
基站发送系统消息, 在固定的无线帧上携带调度信息块 1 , 该携带调度 信息块 1 的无线帧和主系统消息块重复周期中第一次发送主系统消息块的 无线帧在时间上重叠。
2、 如权利要求 1所述的发送方法, 其特征在于, 具体包括:
基站发送系统消息, 将系统帧号为 SFN-M的无线帧作为主系统消息块 重复周期中第一次发送主系统消息块的无线帧, 在系统帧号为 SFN-S1的无 线帧上携带调度信息块 1;
其中, SFN-M除以 4的余数为 a, a为 0、 1、 2、 3中的任意一个数; SFN-S1除以 8的余数为 a+4b, b是 0或 1。
3、 如权利要求 1所述的发送方法, 其特征在于:
所述主系统消息块重复周期是 40毫秒, 所述调度信息块 1的调度周期 是 80毫秒。
4、 一种第三代合作伙伴计划长期演进系统中系统消息的传输方法, 其 特征在于, 包括:
基站发送系统消息, 在固定的无线帧上携带调度信息块 1 , 该携带调度 信息块 1 的无线帧和主系统消息块重复周期中第一次发送主系统消息块的 无线帧在时间上重叠;
终端接收系统消息时,在固定的无线帧中接收主系统消息块和调度信息 块 1。
5、 如权利要求 4所述的传输方法, 其特征在于, 具体包括:
基站发送系统消息, 将系统帧号为 SFN-M的无线帧作为主系统消息块 重复周期中第一次发送主系统消息块的无线帧, 在系统帧号为 SFN-S1的无 线帧上携带调度信息块 1; 终端接收系统消息时, 在系统帧号为 SFN-M的无线帧上接收主系统消 息块重复周期中的第一个主系统消息块, 在系统帧号为 SFN-S1的无线帧上 接收调度信息块 1;
其中, SFN-M除以 4的余数为 a, a为 0、 1、 2、 3中的任意一个数; SFN-S1除以 8的余数为 a+4b, b是 0或 1。
6、 如权利要求 4所述的传输方法, 其特征在于:
所述主系统消息块重复周期是 40毫秒, 所述调度信息块 1的调度周期 是 80毫秒。
7、 如权利要求 4所述的传输方法, 其特征在于, 还包括:
基站发送系统消息, 在调度信息块 1 中携带其它调度信息块的调度信 息;
终端接收系统消息时,从调度信息块 1中获得其它调度信息块的调度信 息, 从而再接收其它调度消息块。
8、 一种第三代合作伙伴计划长期演进系统中系统消息的调度方法, 其 特征在于, 包括:
在固定的无线帧上携带调度信息块 1 , 该携带调度信息块 1的无线帧和 主系统消息块重复周期中第一次发送主系统消息块的无线帧在时间上重叠。
9、 如权利要求 8所述的调度方法, 其特征在于, 具体包括:
将系统帧号为 SFN-M的无线帧作为主系统消息块重复周期中第一次发 送主系统消息块的无线帧, 在系统帧号为 SFN-S1的无线帧中携带调度信息 块 1; 所述 SFN-M除以 4的余数为 a, a为 0、 1、 2、 3中的任意一个数; SFN-S1除以 8的余数为 a+4b, b为 1或 0。
10、 如权利要求 8所述的调度方法, 其特征在于:
所述主系统消息块重复周期是 40毫秒, 所述调度信息块 1的调度周期 是 80毫秒。
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