CN101453298B - Processing method, system and apparatus for header compression in wireless network - Google Patents

Processing method, system and apparatus for header compression in wireless network Download PDF

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CN101453298B
CN101453298B CN 200710199032 CN200710199032A CN101453298B CN 101453298 B CN101453298 B CN 101453298B CN 200710199032 CN200710199032 CN 200710199032 CN 200710199032 A CN200710199032 A CN 200710199032A CN 101453298 B CN101453298 B CN 101453298B
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decompressor
state transition
compression
information
feedback
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CN 200710199032
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CN101453298A (en
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梁文亮
吴建军
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华为技术有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Application independent communication protocol aspects or techniques in packet data networks
    • H04L69/04Protocols for data compression
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic or resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/06Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W80/00Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02Data link layer protocols

Abstract

本发明公开了一种无线网络中头压缩的处理方法,该方法为:压缩端和解压缩端建立数据包头压缩(PHC)初始上下文;需要转变压缩状态时,压缩端将状态转变信息发送解压缩端;所述解压缩端利用所述状态转变信息对来自压缩端的数据包进行解压缩处理。 The present invention discloses a processing method in a wireless network header compression, the method is: establishing compression end data packet header and decompressing the compressed end (PHC) Initial Context; when the need to change the compressed state, the compression end state transition information transmission decompressor ; the decompressor using the state transition information packets from the compression end of the decompression processing. 本发明可以对变化的动态参数实时进行状态改变,而且还可以在媒体接入控制(MAC)层进行头压缩。 The present invention can dynamically change the parameters of the state changes in real time, but also the header compression may be performed at a medium access control (MAC) layer. 同时,本发明还公开了一种无线网络中头压缩的处理系统及装置。 Meanwhile, the present invention also discloses a processing system and apparatus in a wireless network header compression.

Description

一种无线网络中头压缩的处理方法及系统、装置技术领域[0001] 本发明涉及通信技术领域,特别是一种无线网络中头压缩的处理方法、系统及装置。 In a wireless network header compression processing method and system TECHNICAL FIELD [0001] The present invention relates to communication technologies, in particular processing method in a wireless network header compression, systems and devices. 背景技术[0002] 由于物理条件的限制,无线链路与有线链路相比,其传输速率较低,而误码率偏高。 [0002] Due to physical limitations, the wireless link compared to a wired link, a lower transmission rate, bit error rate high. 当在无线小区环境中应用IP技术时,存在分组头标开销过大的问题。 When applied in a wireless IP technology cell environment, there is packet header overhead is too large. 例如,一个IPv6 语音通信分组,用户真正需要的分组净荷往往只占整个分组的22%。 For example, a voice communication IPv6 packets, the packet payload users really need often only 22% of the entire packet. 这样不仅浪费带宽,还增大了分组因出错而被丢弃的概率。 This is not only a waste of bandwidth, but also increases the probability of packets discarded due to errors. 若不采取有效措施,在浪费宝贵无线网络资源的同时, 还会降低服务质量(QoS)。 Failure to take effective measures in the waste of valuable wireless network resources, while also reducing the quality of service (QoS). [0003] 鲁棒性头标压缩(ROHC, Robust Header Compression)是一种基于流的头标压缩方案。 [0003] Robust header compression (ROHC, Robust Header Compression) is a stream-based header compression scheme. 在网络数据传输过程中,同一个流的分组其大部分头标域具有相同的域值。 In the data transmission network, the packets of the same stream most of its header fields have the same field value. ROHC在某个流中取一个参考分组,对于其他分组仅仅发送头标域中相对参考分组变化的信息,以达到压缩目的,从而更加有效地利用带宽。 ROHC taken up in a flow of a reference packet, it transmits only information about the relative change in the reference packet header field for other packets in order to achieve the purpose of compression, and thus more efficient use of bandwidth. 同时,ROHC还通过控制反馈消息的频率和数量、 检测不同步的严格逻辑、以及差错校验等手段,使该头标压缩机制具有高度的有效性和合理的鲁棒性。 Meanwhile, through the ROHC feedback control the frequency and the number of messages, sync logic rigorous testing, and error checking and other means, so that the header compression scheme with a high degree of availability and reasonable robustness. 这样,ROHC便提供了一个适合于高误码率和长时延链路的头标压缩机制。 In this way, ROHC will provide a header compression mechanism suitable for high error rates and long-latency links. [0004] ROHC定义了压缩器(Compressor)和解压缩器(DeCompressor),分别有三种状态。 [0004] ROHC compressor is defined (the Compressor) and decompressor (DeCompressor), there are three states. 压缩器的三个状态为IR (Initialization and Refresh), FO (FirstOrder)和SO (Second Order);解压缩器的三个状态为NC (No Context), SC (Static Context)和FC (Full Context)。 The state of the compressor is three IR (Initialization and Refresh), FO (FirstOrder) and SO (Second Order); three decompressor state of NC (No Context), SC (Static Context) and FC (Full Context) . [0005] ROHC基于反馈的形式还分了三种模式:单向模式(U-mode)、双向可靠模式(R-mode)和双向优化模式(0-mode)。 [0005] ROHC feedback based further divided form three modes: unidirectional mode (U-mode), Bidirectional Reliable mode (R-mode) and a bidirectional optimization mode (0-mode). U模式中通信是单向的,压缩器状态迁移不依赖于反馈;0模式中负反馈是强制的洱模式中正反馈和负反馈都是强制的。 U-mode is a unidirectional communication, the compressor is not dependent on feedback state transition; 0 mode is mandatory er negative feedback and negative feedback mode of CKS are mandatory. [0006] 但是,ROHC只能工作在IP层以上,而且无法对以太网的数据包进行头压缩。 [0006] However, ROHC can only operate above the IP layer, but not to the Ethernet packet header compression. 同时, ROHC的操作效率不高,和无线网络的底层技术结合不够紧密。 Meanwhile, the ROHC operation efficiency is not high, and the underlying wireless network technology binding is not tight enough. [0007] 数据包头压缩(Packet Header Suppression, PHS)是一套头压缩机制,可以对多个IP层上不同的profile进行压缩,也支持对以太网包进行的头压缩,相对于ROHC等头压缩方式,有更广的应用范围。 [0007] The compressed data packet header (Packet Header Suppression, PHS) is a header compression mechanism to compress a plurality of different profile on the IP layer, also supports Ethernet packet header compression with respect to the other header compression ROHC , have a wider range of applications. PHS有如下参数,数据包头压缩大小(PHSS,Packet header suppression size),数据包头压缩掩码(Packetheader suppression mask, PHSM),数据包头压缩索引(Packet header suppress ion index, PHSI),数据包头压缩域值(Packet header suppression field, PHSF),数据包头压缩确认(Packet header suppression valid, PHSV 确认)。 PHS has the following parameters, the size of the compressed data packet header (PHSS, Packet header suppression size), packet header compression mask (Packetheader suppression mask, PHSM), compressed index data packet header (Packet header suppress ion index, PHSI), the compressed packet header field values (Packet header suppression field, PHSF), packet header compression acknowledgment (Packet header suppression valid, PHSV confirmation). [0008] PHSF由高层实体决定,然后在空口上用一个更短的PHSI替代PHSF和PHSM组合后的比特串进行传送,从而达到节省空口资源的目的。 [0008] PHSF determined by the upper layer entity, and then replace the bit string after transmission PHSF and PHSM combination with a shorter PHSI on an air interface, so as to achieve air interface resource savings. [0009] 这种技术方案中,PHS只能对静态的数据包头部分进行压缩,一些业务进行过程中可能发生变化的部分都无法压缩;其没有反馈机制,不具备ROHC的鲁棒性,以及伴随业务进行的实时动态特性。 [0009] This technical solution, PHS only the static part of the packet header compression, some changes may occur in the process of some of the business can not be compressed; it has no feedback mechanism does not have the robust ROHC, and the accompanying real-time dynamic characteristics of the traffic carried.

发明内容 SUMMARY

[0010] 本发明实施例的目的是提供一种无线网络中头压缩的处理方法及系统、装置,可以实现在IP层以下进行头压缩并能对压缩机制发生改变的参数进行状态改变。 [0010] object of embodiments of the present invention to provide a wireless network header compression processing method and system, apparatus, can be implemented in the IP layer header compression and to a state change in the parameter of the compression mechanism is changed.

[0011] 本发明实施例提供的一种无线网络中头压缩的处理方法,包括: [0011] The processing method of a wireless network provided in the embodiment of the present invention, header compression, comprising:

[0012] 压缩端和解压缩端建立数据包头压缩PHC初始上下文; [0012] Compression and decompression terminal end PHC establish initial context data packet header compression;

[0013] 需要转变压缩状态时,所述压缩端将状态转变信息发送给所述解压缩端; When the [0013] need to change the compressed state, the compression end state transition information to said decompressor;

[0014] 所述解压缩端利用所述状态转变信息对来自所述压缩端的数据包进行解压缩处理。 [0014] The decompressor using the state transition information for the compressed data packets from the terminal performs decompression processing.

[0015] 本发明实施例提供的一种无线网络中头压缩的反馈处理方法,包括: [0015] Feedback processing method in a wireless network header compression according to an embodiment of the present invention, comprising:

[0016] 需要转变压缩状态时,压缩端将状态转变信息发送给解压缩端; When the [0016] need to change the compressed state, the compression end state transition information to the decompressor;

[0017] 解压缩端收到该状态转变信息后,利用状态转变信息更新解压缩状态,并向压缩端发送反馈信息; [0017] decompressor receives the state transition information, using the state transition information update decompression state, and the compression end transmits feedback information;

[0018] 压缩端收到反馈信息后,利用所述状态转变信息更新压缩状态。 After [0018] the compression end received feedback information, using the state transition information update compressed state.

[0019] 本发明实施例提供的一种无线网络中PHC初始上下文建立方法,包括: [0019] A wireless network according to an embodiment of the present invention in an initial context setup PHC method, comprising:

[0020] 发送端与接收端进行能力协商,在所述能力协商过程中所述发送端和接收端将自身的PHC支持能力告知对端; [0020] The transmitter and the receiver terminal capability negotiation, the sending end and the receiving end will be informed of their ability to support PHC end of the capability negotiation procedure;

[0021] 在业务连接建立过程中,所述发送端向接收端发送含有连接标识、分类器信息以及对应的PHC信息的连接建立消息。 [0021] In the process of establishing a service connection, the sender sends the connection identification information contained PHC, classified information and the corresponding connection setup message to the receiving end.

[0022] 本发明实施例提供的一种无线网络中头压缩的处理系统,包括:压缩器和解压缩器,其中, [0022] A wireless network provided in the header compression processing system according to the present invention, comprising: a compressor and decompressor, wherein,

[0023] 所述压缩器,用于与所述解压缩器建立PHC初始上下文;在需要转变压缩状态时,将状态转变信息发送解压缩器;向所述解压缩器发送压缩的数据包; [0023] The compressor used to establish initial context PHC and the decompressor; a compressed state when required transition, the state transition information transmission decompressor; transmitting the compressed data packet to the decompressor;

[0024] 所述解压缩器,用于与所述压缩器建立PHC初始上下文;利用所述状态转变信息对来自压缩器的数据包进行解压缩处理。 [0024] The decompressor, for establishing the initial context PHC compressor; using the state transition information from the packet compressor performs decompression processing.

[0025] 本发明实施例提供的一种无线网络中头压缩的反馈处理系统,包括:压缩器和解压缩器,其中, [0025] Feedback processing system in a wireless network provided by the embodiment of the present invention, header compression, comprising: a compressor and decompressor, wherein,

[0026] 所述压缩器,用于需要转变压缩状态时,将状态转变信息发送给所述解压缩器,所述状态转变信息为压缩机制变化信息;收到来自解压缩器的反馈信息后,利用所述状态转变信息更新压缩状态; After receiving the feedback information from the decompressor,; [0026] a compressor for compressing need to change state when the state transition information to said decompressor, said state transition information to change information compression scheme using the state transition information update compressed state;

[0027] 所述解压缩器,用于利用所述状态转变信息更新解压缩状态,并向压缩器发送反馈信息。 [0027] The decompressor, means for utilizing the decompressed state transition information update status, feedback information is transmitted to the compressor.

[0028] 本发明提供的一种通信系统,包括: [0028] The present invention provides a communication system, comprising:

[0029] 所述发送装置,用于与所述接收装置进行能力协商,在所述能力协商过程中将所述自身的PHC支持能力信息通知所述接收装置;向接收装置发送连接标识、分类器信息以及对应的PHC信息; [0029] The transmitting means, for performing capability negotiation with the receiving means of the own capability information notification PHC support the capability negotiation procedure in the said receiving means; means for transmitting to the receiving connection identification, classification PHC information and corresponding information;

[0030] 接收装置,用于与所述发送装置进行能力协商,在头压缩机制建立过程中将所述自身的PHC支持能力信息发送给所述发送装置。 [0030] The receiving means for performing capability negotiation with the transmitter means, in said header compression mechanism of said transmitting means transmits PHC ability to support itself in the process information to establish. [0031] 本发明实施例中,压缩端和解压缩端建立PHC初始上下文;压缩端确定需要转变压缩状态时,将状态转变信息发送解压缩端;所述解压缩端利用所述状态转变信息对来自压缩端的数据包进行解压缩处理。 [0031] The embodiments of the present invention, the compression and decompression terminal end PHC establish initial context; need to change the compression end determines a compressed state, the state transition information transmission decompressor; decompressor using the state transition information from the end of the compressed data packets decompression process. 本发明可以对变化的动态参数实时进行更新,而且还可以在MAC层进行头压缩。 The present invention can dynamically change the parameters updated in real time, but also the header compression may be performed at the MAC layer.

附图说明 BRIEF DESCRIPTION

[0032] 图1为本发明实施例方法的流程示意图; [0032] FIG. 1 is a schematic flow of an embodiment method of the present invention;

[0033] 图2为本发明实施例的状态转变子头的格式; [0033] FIG 2 transition state embodiment of the present invention, sub-header format;

[0034]图3为本发明实施例的设置的一个信令消息格式示意图; [0034] FIG. 3 is a schematic format of a signaling message provided according to embodiments of the present invention;

[0035] 图4为本发明实施例的设置的另一个信令消息格式示意图; [0035] FIG. 4 is a schematic of another signaling message formatted according to an embodiment of the present invention;

[0036] 图5为本发明实施例的MAC PDU的结构示意图; [0036] FIG. 5 is a schematic structure of a MAC PDU embodiment of the present invention;

[0037] 图6为压缩端和解压缩端建立PHC初始上下文的具体流程示意图; [0037] FIG. 6 is an end side decompression specific flow schematic establish initial context PHC compression;

[0038] 图7为以网络触发的场景为例说明本发明实施例参数协商的具体流程示意图; [0038] FIG. 7 is triggered in an example network scenario specific process parameter negotiation embodiment of the present invention, a schematic embodiment;

[0039] 图8为以下行场景为例本发明实施例在PHC初始上下文建立后压缩状态发生变化更新压缩状态的流程示意图; [0039] FIG 8 is the following line scenario as an example embodiment of the invention after compression PHC establish initial context status change update process schematic compressed state;

[0040] 图9为本发明实施例的一种无线网络中头压缩的处理系统结构示意图; [0040] FIG. 9 is a schematic structure of a processing system in a wireless network according to embodiments of the present invention, the header compression;

[0041] 图10为本发明实施例的无线网络中头压缩的反馈处理系统结构示意图; [0041] FIG. 10 is a schematic diagram of wireless network system configuration feedback process embodiment of the invention, header compression;

[0042] 图11为本发明实施例提供的一种通信系统的结构示意图。 [0042] FIG. 11 is a schematic configuration of a communication system according to an embodiment of the present invention.

具体实施方式 detailed description

[0043] 在本发明实施例中,在压缩端和解压缩端之间建立了PHC初始上下文后,如果在PHC初始上下文建立过程中协商的初始压缩参数发生改变,也就是需要转变压缩状态时,压缩端将状态转变信息发送解压缩端,所述状态转变信息为压缩机制变化信息;所述解压缩端利用所述状态转变信息对来自压缩端的数据包进行解压缩处理。 After [0043] In an embodiment of the present invention, between the end of the compression and decompression of the end of the established initial context PHC, PHC if negotiated during an initial context setup the initial compression parameter is changed, i.e. need to change the compressed state, the compression the end of state transition information transmission decompressor, the state transition information change information compression mechanism; the decompressor using the state transition information packets from the compression end of the decompression processing.

[0044] 参见图1所示,本发明实施例的方法包括以下步骤: [0044] Referring to FIG. 1, the embodiment of the present invention, the method comprises the steps of:

[0045] 步骤101:压缩端和解压缩端建立PHC初始上下文。 [0045] Step 101: the compression and decompression terminal end PHC establish initial context.

[0046] 步骤102:压缩端确定需要转变压缩状态时,将状态转变信息发送解压缩端,所述状态转变信息为压缩机制变化信息。 [0046] Step 102: determining the need to change the compression end when a compressed state, the state transition information transmission decompressor, the state transition information compression scheme change information.

[0047] 压缩端可以通过如下方式将状态转变信息发送给解压缩端: [0047] The compression end by the state transition may send information to the decompressor:

[0048] 所述压缩端发送媒体接入控制(Media Access Control, MAC)协议数据包单元(Protocol Data Unit,PDU)给所述解压缩端,其中MAC PDU的MAC头含有MAC PDU中是否携带状态转变子头的指示,以及状态转变子头,参见图2所示,所述状态转变子头中携带状态转变信息,还可以进一步包括状态转变信息的序列号。 Protocol data packet unit (Protocol Data Unit, PDU) to the decompressor, wherein the MAC PDU comprises a MAC header [0048] compression end of the transmission medium access control (Media Access Control, MAC) MAC PDU carried state whether indicates a transition in the sub-header, sub-header and a state transition, see Figure, the state transition carried 2 subheader state transition information may further include a state transition sequence number information. 所述状态转变信息可以包括:PHCI以及对应的动态参数修改值。 The state transition information may include: PHCI and corresponding dynamic parameter modification value.

[0049] 当然,图2中状态转变子头还可以包括:CRC码,或,由发送端和接收端之间的共享密钥产生的消息摘要。 [0049] Of course, a state transition in Figure 2 may further include a sub-header: CRC code, or a message digest generated by the shared key between the transmitting end and the receiving end. 因此,所述解压缩端进行解压缩处理前,解压缩端可以先利用所述状态转变信息的CRC码以及所述消息摘要对压缩端进行验证,并且在验证通过后,再进行解压缩处理。 Accordingly, the decompressor performs decompression pretreatment decompressor may first CRC code using the state transition information and the message digest to verify the compression end, and after the verification, and then performs a decompression process.

[0050] 可以利用MAC头中的空闲比特位指示状态转变子头。 [0050] may indicate the state transitions using a spare bit sub-header in the MAC header. 但由于MAC头上的空闲bit只有一个,为了满足后续的协议扩展性,可以将MAC头中的空闲比特位和可扩展的子头域(ESF)进行组合来指示状态转变子头。 However, due to the idle bit MAC only one head, in order to satisfy a subsequent protocol scalability to idle bit in the MAC header extension and a sub-header field (ESF) combining sub-header to indicate the state transition. [0051] 另外,由于MAC SDU在成为MAC PDU的过程中,可能会被分割或者组合,而本发明实施例中,利用MAC PDU中的状态转变子头,来控制MAC SDU层次上的压缩,因此状态转变子头和MAC SDU的相对位置需要确定。 [0051] Further, since the MAC SDU becoming a MAC PDU in the process, may be split or in combination, the embodiment of the present invention, using the state in the MAC PDU transition subheader, to control the compression of the MAC SDU level, so the relative position of the sub-header and the state transition is determined MAC SDU. [0052] 图2所示是以利用MAC头中的空闲比特位指示状态转变子头为例,PHC就是MAC 头上的状态转变子头指示,等于I表示MAC头后存在状态转变子头;否则不存在状态转变子头;PHC-UPD-SUB-H为状态转变子头。 [0052] FIG. 2 is shown the use of spare bits of the MAC header indicates an example state transition sub-header, is the state of PHC MAC sub-header indicating the head of the transition, a state transition is equal to I sub-header indicates the presence of the MAC header; otherwise, the absence of a state transition subheader; PHC-UPD-sUB-H is a state transition subheader. 状态转变子头可以包含:PHCI以及其对应的动态参数修改值,状态转变信息的序列号、消息摘要算法相关参数,以及CRC算法相关参数。 State transition sub-header may comprise: a modified value PHCI dynamic parameter and its corresponding state transition sequence number information, the message digest algorithm parameters, and the CRC algorithm parameters. 图2中状态转变信息的序列号可以为=PHC的序列号(SN),该序列号用于反馈时索引。 FIG 2 is a state transition information may SEQ ID = PHC is the sequence number (SN), a feedback index when the serial number. [0053] 步骤103:所述解压缩端利用所述状态转变信息对来自压缩端的数据包进行解压缩处理。 [0053] Step 103: the decompressor using the state transition information packets from the compression end of the decompression processing. [0054] 当然,为了实现之后的数据包的连续传输,压缩端确定需要转变压缩状态时,将状态转变信息发送解压缩端;也就说说,需要压缩端和解压缩端都利用状态转变信息更新解压缩状态,因此,在之后的数据包传输中,压缩端可以利用变化后的压缩状态进行压缩处理,解压缩端可以利用与相应的解压缩状态进行解压缩处理。 When [0054] Of course, in order to continuously transmit data packets after implementation, the compression end determines that a compressed state transition, the state transition information transmission decompressor; talk also requires decompression compression end side are updated using the state transition information decompression state, therefore, after the packet transmission, the compressed end state compression processing variations may be utilized, decompressor may use the state of compression and corresponding decompression processing solution. [0055] 这里,压缩端和解压缩端更新压缩状态可以包括很多方式,比如:[0056] 第一种方式是直接更新压缩端和解压缩端更新压缩状态的方式,具体的说,当所述压缩端确定需要转变压缩状态时,利用所述状态转变信息直接更新压缩状态,并采用更新后的压缩状态对要发送给解压缩端的MAC PDU进行压缩,其中MAC PDU的MAC头含有MAC PDU中是否携带状态转变子头的指示,以及状态转变子头。 [0055] Here, the compression end side update reconciliation may include many compression mode compression, such as: [0056] The first way is to directly update the compression end decompress compressed state update end manner, specifically, when the compression end determining the need to change the compressed state, with the state transition information to directly update the compressed state and a compressed state after the update to be sent to the decompressor of the MAC PDU is compressed, wherein the MAC PDU MAC header comprises whether carried state the MAC PDU It indicates a transition in the sub-header, sub-header and a state transition. 因此,解压缩端收到所述MAC PDU 后,如果所述MAC PDU中含有状态转变子头的指示,可以利用所述MAC PDU中状态转变子头中的状态转变信息,更新解压缩状态,并利用更新后的解压缩状态对所述MAC PDU进行解压缩。 Thus, the rear end of decompressor receives the MAC PDU, the MAC PDU if the state transition indication contained in the sub-header, the MAC PDU may use a state transition in the state transition in the sub-header information, updated decompression state, and compressed state of the MAC PDU is decompressed using the updated solution. [0057] 第二种方式通过在特定时间或事件发生时再更新压缩和解压缩状态,具体可以这样实现:[0058] 解压缩端采用原压缩状态机制进行压缩或没有进行压缩MAC H)U,该MAC PDU中不仅包括状态转变子头的指示,以及状态转变子头,进一步还可以包括压缩机制变化指示信息。 [0057] The second mode when a specific event occurs or re-update time compression and decompression state, can be achieved in particular: [0058] decompressor compression mechanism using the original compression or no compression MAC H) U, which It includes not only the MAC PDU sub-header indicates the state transition, and the state transition sub-header, and may further include a change indication information compression scheme. 因此,压缩端可以利用原压缩机制压缩该MACPDU或不压缩该MAC TOU,在所述压缩机制变化指示的时间或事件发生时,更新压缩状态,此后,可以利用更新后的压缩状态对要发送给解压缩端的MACPDU进行压缩。 Thus, a server can use the compression mechanism compresses the original compression or no compression MACPDU the MAC TOU, when the compression mechanism change indicates a time or event, updating a compressed state, and thereafter, the compression state can be updated to be transmitted to MACPDU the decompressor compressed. 而在解压缩端,可以在收到该MAC PDU后,可以根据所述压缩机制变化指示的时间或事件发生时,利用所述状态转变信息更新解压缩端的解压缩状态,并利用更新后的解压缩状态对所述压缩机制变化指示的时间或事件发生之后的来自所述压缩端的数据包进行解压缩处理。 And in the decompressor, after receiving this may MAC PDU, the mechanism may change the time or event occurs according to the compression indication, using the state transition information update Solutions Solutions compressed end state, and the updated use solution the compressed data packets from the state after the compression end time of the event or change in the compression mechanism indicates the occurrence of decompression processing. [0059] 第三种是压缩端在收到解压缩端更新反馈后,再更新解压缩状态,具体可以这样实现:[0060] 压缩端可以采用原压缩状态机制进行压缩或没有进行压缩所述MACPDU,其中MAC PDU的MAC头含有MAC PDU中是否携带状态转变子头的指示,以及状态转变子头;解压缩端收到所述MAC PDU后,利用所述状态转变信息更新解压缩状态,并向压缩端发送反馈信息,其中含有更新结果;压缩端可以根据所述反馈信息中的更新结果确定是否更新压缩状态,如果确定解压缩端已更新,压缩端再利用所述状态转变信息更新压缩状态。 [0059] The third is the compression end after receiving feedback decompressor updates, then updates decompression state, it can be achieved in particular: [0060] Compression mechanism end may be compressed condition original compression or no compression using the MACPDU wherein the MAC PDU comprises a MAC header indicating whether the carried state transition of the MAC PDU sub-header, sub-header and a state transition; decompressor after receiving the MAC PDU, using the state transition information update Solutions compressed state, and compression end transmitting feedback information containing the update result; compression end may determine whether to update the compressed state based on the updated result of the feedback information, if it is determined decompressor is updated, re-use of the compression end state transition information update compressed state.

[0061] 第四种是压缩端在收到解压缩端接收反馈后,更新解压缩状态,然后再指示解压缩端更新解压缩状态。 [0061] The fourth side is compressed after receiving decompressor receives feedback, update decompression state, and then update the indicated decompressor decompression state. 具体如下: details as follows:

[0062] 所述MAC PDU可以采用原压缩状态机制进行压缩或没有进行压缩,则在所述压缩端发送MAC PDU给所述解压缩端后,解压缩端收到所述MAC PDU后,向压缩端发送反馈信息,其中含有接收结果;压缩端根据所述反馈信息中的接收结果确定是否更新压缩状态,如果是,则压缩端利用所述状态转变信息更新压缩状态,并且在更新压缩器状态后的未压缩MAC PDU或者第一个压缩MAC PDU上携带压缩端状态已更新指示信息,当解压缩端收到这个指示信息后,利用所述状态转变信息立即更新解压缩状态。 After the [0062] original compression mechanism using the MAC PDU may be compressed or not compressed, then after transmitting the MAC PDU to the compression end of the decompressor, the decompressor received MAC PDU, the compression after compression end determining whether to update the compressed state based on the reception result of the feedback information, if so, the compression end state transition information update using the compressed state, and update compressor state; end sends feedback information containing a reception result uncompressed first MAC PDU or the MAC PDU to carry a compression compressed end state indication information has been updated, when the decompressor receives the instruction information, by using the state transition decompression state information update immediately.

[0063] 这里,所述解压缩端可以通过设置的信令消息向所述压缩端发送反馈信息,也可以通过MAC PDU向所述压缩端发送反馈信息,还可以通过特定的物理资源向压缩端发送反 [0063] Here, the decompressor may send feedback information to the terminal through a signaling message compression set, also sends feedback information to be compressed by the MAC PDU, the compression end may also be over a particular physical resource send anti

馈信息。 Feed information.

[0064] 图3为设置的信令消息所包含的内容格式(不包含MAC头)示意图。 [0064] FIG. 3 is a set of content formats signaling messages included in schematic (not including the MAC header). 参见图3所示,该信息消息可以包括:CID、PHCl以及PHCI对应的动态参数的接收结果(ReceptionResult)、PHC SN和CRC码。 Referring to FIG. 3, the information message may include: receiving a result of the dynamic parameters of CID, PHCl and PHCI corresponding (ReceptionResult), PHC SN and the CRC code. 还可以包括基于哈西算法的消息验证码,或基于密码的消息验证码(H/CMAC)。 It may further include a hash-based message authentication code algorithm, or cipher-based message authentication code (H / CMAC).

[0065] 当然,参见图4所示,如果一个连接标识中,有多个分类器以及对应的PHCI,并且CRC针对一个PHC参数集进行计算,那么还需要指明所反馈的PHCI。 [0065] Of course, referring to FIG. 4, if a connection identifier, and a plurality of classifiers corresponding PHCI, and the CRC is calculated for a set of parameters PHC, you also need to specify PHCI fed back.

[0066] 而且,可以通过扩展的MAC PDU承载反馈信息,解压缩端利用扩展后的MAC PDU向压缩端反馈信息。 [0066] Further, the feedback information may be carried by the extended MAC PDU, the MAC PDU decompressed using the extended to the end of the compression end feedback information. 图5为扩展后的MAC PDU的结构示意图。 FIG 5 is a schematic view of the expanded MAC PDU. 参见图5所示,该MAC PDU可以包括PHC的反馈子头(PHC FDBK SUB-H),PHC的反馈子头中可以包括CID、接受结果(Reception Result)、PHC序列号(SN)、CRC码。 Referring to FIG. 5, the MAC PDU may include a feedback subheader PHC (PHC FDBK SUB-H), PHC feedback subheader may be included in the CID, to accept the results (Reception Result), PHC sequence number (SN), CRC code . 还可以包括HMAC或CMAC。 It may also include HMAC or CMAC. 同样,如果存在多个PHC动态参数状态变化,PHC的反馈子头中还可以包括每个PHCI的Reception Result。 Similarly, if the dynamic parameter status change is present a plurality of PHC, PHC's feedback subheader may further comprise Reception Result of each PHCI.

[0067] 当压缩端为终端侧,解压缩端为网络侧,并且,所述解压缩端向压缩端发送反馈信息的情况,即下行发送反馈信息的情况,网络侧可以通过DL-MAP消息通知终端PHC反馈信息的物理资源,网络侧可以利用该物理资源向终端发送CID、Reception Result、PHC SN、CRC码。 [0067] When the compression end terminal side, the network decompressor side, and the decompressor transmits feedback information to the compression end, i.e. the downlink feedback information is transmitted, by the network side may notify DL-MAP message PHC physical resources feedback information terminal, the network side may use the physical resources to be transmitted to the terminal CID, Reception Result, PHC SN, CRC code. 还可以包括HMAC或CMAC。 It may also include HMAC or CMAC.

[0068] 当压缩端为网络侧,解压缩端为终端侧,并且,所述解压缩端通过特定的物理资源向压缩端发送反馈信息的情况,即上行发送反馈信息的情况,网络侧可以向终端侧发送含有用于指示终端进行PHC反馈的特定物理资源的下行资源分配(DL-MAP)消息,因此,终端可以在网络侧指定的特定物理资源上发送反馈信息。 [0068] When the compression end is the network side, the terminal side decompressor, and the solution to the end of the compression the compression end transmits feedback information, i.e. feedback information uplink transmission over a particular physical resource, the network side can terminal side transmits downlink resource allocation (DL-MAP) message containing a particular physical resource used for indicating a feedback terminal PHC, therefore, feedback information is transmitted on a specific physical resource can be specified by the terminal at the network side.

[0069] 针对上述情况,网络侧也可以向终端发送上行资源分配(UL-MAP)消息;终端收到所述UL-MAP消息时,如果终端有反馈信息,则向网络侧发送反馈信息。 [0069] For the above, the network side may send an uplink resource allocation (UL-MAP) message to the terminal; when the terminal receives the UL-MAP message, if the terminal feedback information, the feedback information is sent to the network side. 而且,所述反馈信息中可以进一步包括是否发送完的指示,如果所述反馈信息没有发送完,则网络侧一直为所述终端分配资源,直到所述终端的反馈信息发送完毕。 Further, the feedback information may further include information indicating whether the finished sending, if the feedback information is not transmitted and the network side of the terminal resource has been assigned, the feedback information until the terminal is sent.

[0070] 当然,网络侧可以采用轮询方式向所述终端发送UL-MAP消息,也可以在收到终端的反馈请求后,向终端发送UL-MAP消息。 [0070] Of course, the network side may send polling of the UL-MAP message to the terminal, it can also transmits UL-MAP message to the terminal after receiving the feedback request terminal.

[0071] 参见图6所示,压缩端和解压缩端建立PHC初始上下文的具体过程可以这样实现:[0072] 步骤601:压缩端与解压缩端进行能力协商,在所述基本能力协商过程中所述压缩端和解压缩端将自身的PHC支持能力告知对端。 [0071] Referring to FIG. 6, the end of the compression and decompression to establish specific process ends PHC initial context may be achieved: [0072] Step 601: end of the end of the compression and decompression capability negotiation, as in the basic capability negotiation process said end compression and decompression will end their ability to inform the peer support PHC. [0073] 由于PHC参数可以分为两种,静态的和终端相关的参数,即PHC静态参数;动态的业务相关的参数,即PHC动态参数。 [0073] Since the PHC parameters may be divided into two, and static parameters related to the terminal, i.e. PHC static parameters; dynamic service-related parameters, i.e., the dynamic parameters PHC. [0074] PHC静态参数可以在入网过程中,通过SBC或者REG消息进行能力协商,例如,PHC 静态参数可以包含如下一种或几种参数=PHC的能力支持,即动态改变头压缩参数的能力、 PHSS的最大值、一个连接标识上分类器或PHCI的最大值、PHC反馈能力的支持、支持的反馈形式、所支持的CRC算法、所支持的头压缩方式,如:头压缩方式为PHS、PHC或ROHC等。 [0074] PHC network may be static parameters process by SBC REG message or a capability negotiation, e.g., of PHC static parameters may comprise one or more of the following parameter = PHC support capability, i.e. the ability to dynamically change the parameters of the compression head, PHSS of maximum compression head, a connection identification or classification of the maximum PHCI support PHC feedback capability, the feedback in the form of support, supported CRC algorithm supported, such as: the PHS header compression is, PHC or ROHC and so on. [0075] PHC动态参数可以在连接建立过程中,通过DSX消息进行协商,例如,可以包含如下参数:PHCS初始值、PHCF初始值、PHCV初始值、PHCM初始值、PHCI以及反馈相关参数中的一种或几种,其中所述反馈相关参数包括是否需要反馈、反馈信道CID和反馈模式。 [0075] PHC dynamic parameters can be performed during connection establishment by DSX message negotiation, for example, contains the following parameters: PHCS initial value, PHCF initial value, pHCV initial value, PHCM initial value, PHCI and a feedback related parameter a one or several, wherein the feedback comprises a parameter related to the need for feedback from the channel feedback mode and a CID. 进一步,所述PHC动态参数还可以包括采用的消息摘要算法相关参数,和/或,CRC算法相关参数。 Further, the PHC dynamic parameters may also include parameters related to message digest algorithm employed, and / or, CRC algorithm parameters. [0076] 在步骤601中进行基本能力协商过程中,协商了PHC静态参数,以及PHC动态参数的初始值。 [0076] The basic capability negotiation process, the static parameters negotiated PHC, PHC dynamic parameters and an initial value in step 601. 此后,更新状态发生变化时,即PHC动态参数发生变化。 Thereafter, when updating state changes, i.e., changes in dynamic parameters PHC. [0077] 以SBC交互为例说明静态参数协商过程:[0078] MS发送基本能力请求(SBC-REQ)消息给BS,携带终端的PHC静态参数;BS向GW 请求依赖GW确定的PHC静态参数的相关信息,同时也可以携带终端的PHC静态参数;GW返回BS所请求的信息;BS发送基本能力响应(SBC-RSP)消息给MS,携带BS的PHC静态参数。 [0077] In an example interaction static parameters SBC negotiation procedure: [0078] MS transmits the basic capability request (SBC-REQ) message to the BS, the mobile terminal PHC static parameters; PHC static parameter dependent request the BS GW determined to the GW information, but also can carry PHC static parameters of the terminal; GW returns the information requested by the BS; BS transmits the basic capability response (SBC-RSP) message to the MS, the BS carries PHC static parameters. 至此,终端和接入网互相获得了基本的PHC能力信息,后续的通信过程中的参数将在此基础上进行。 At this point, the terminal and the access network with each other to obtain basic PHC capability information, the subsequent communication process parameters will be based on this. [0079] 步骤602:在所述压缩端对解压缩端进行接入认证后,向解压缩端发送连接建立消息,如:DSA请求消息,其中包括连接标识、分类器信息以及对应的PHC信息。 [0079] Step 602: After performing access authentication decompressor at the compression end, the compression end sends a connection establishment message solutions, such as: the DSA request message including connection identification information PHC, and corresponding classification information. [0080] 步骤603:所述解压缩端收到所述连接建立消息后,向所述压缩端反馈DSA响应消息,其中包括连接建立消息的接收结果、进一步还可以包含每个PHC参数的接收结果。 [0080] Step 603: After the end of the decompressor receiving the connection establishment message, to the compression of the feedback DSA response message including a reception result of the connection establishment message, may further comprise further a reception result for each parameter PHC . [0081] 图7是以网络触发的场景为例说明本发明实施例参数协商的具体过程。 [0081] FIG. 7 is an example scenario of network specific trigger parameter negotiation procedure of Example embodiment of the present invention. 参见图7 所示,本发明实施例参数协商的具体过程如下:[0082] 步骤701:网络触发实体触发BS,要求进行连接建立,图中示出网络触发实体为Gff ;此步骤可以携带上述PHC动态参数,但是如果PHC动态参数完全由BS控制,则可不携带动态参数;[0083] 步骤702:BS发送动态服务增加(DSA)请求(DSA-REQ)消息给终端,携带上述PHC 动态参数,上述PHC动态参数可以和连接标识一一对应,也可以和分类器一一对应;而符合不同分类器规则的数据是允许共享一个连接标识的,因此一个连接标识上可能有多套的PHC动态参数。 Referring to FIG. 7, the specific parameter negotiation procedure of Example embodiment of the present invention is as follows: [0082] Step 701: Trigger a network entity triggers the BS, connection establishment is required, there is shown a network entity to trigger Gff; This step may be carried above PHC dynamic parameters, but if PHC dynamic parameters entirely by control of the BS, can not carry dynamic parameters; [0083] step 702: BS transmits a dynamic service Addition (DSA) request (DSA-REQ) message to the terminal, to carry these PHC dynamic parameters, the above-described PHC connection identifier and the dynamic parameter may be one to one, and the classifier can be one correspondence; and the data matching classification rules that allows the sharing of a connection ID, and therefore the dynamic parameter identifies a PHC multiple sets of possible connections. [0084] 步骤703:终端收到DSA-REQ消息后,对PHC动态参数进行解析,如果有需要修改的PHC动态参数,可以发送携带需要修改的PHC动态参数的DSA响应(DSA-RSP)消息给接入网;或者,通知接入网终端接受所有的PHC动态参数。 [0084] Step 703: After the terminal receives the DSA-REQ message, parameters of the dynamic parsing PHC, PHC if there is need to modify the dynamic parameter may be sent to modify the DSA response carries PHC dynamic parameters (DSA-RSP) message to the access network; Alternatively, the access network notifies the terminal accepts all PHC dynamic parameters. [0085] 步骤704:对应于步骤701,BS通知网络触发实体终端的接受状态;如果DSA-RSP中的PHC动态参数修改需要其确认,还可以携带此修改信息;如果完全由BS控制,则不需要。 [0085] Step 704: corresponds to step 701, BS informs the network entity triggers the acceptance status of the terminal; if the DSA-RSP PHC dynamically modify parameters which need confirmation, this modification can also carry information; if entirely controlled by the BS, no need.

[0086] 步骤705:网络触发实体进行综合判断,给出最终的PHC动态参数。 [0086] Step 705: the network entity to trigger an overall judgment, give the final PHC dynamic parameters. 如果完全由BS控制,则不需要此步骤。 If fully controlled by BS, this step is not necessary.

[0087] 步骤706:接入网中的发送DSA确认(DSA-ACK)消息给终端,表示仅仅确认已经正确接收DSA-RSP消息,或者通过DSA-ACK消息将步骤705中的最终PHC动态参数发送给终端。 [0087] Step 706: Send contact DSA acknowledgment (DSA-ACK) message to the terminal in the network, represented only confirmation has been correctly received DSA-RSP message, or the DSA-ACK message sent by step 705 in the final dynamic parameters PHC to the terminal.

[0088] 本发明实施例的无线网络中PHC初始上下文建立方法的过程可以这样实现: [0088] The wireless network embodiment of the present invention the process of establishing the initial context PHC method can be achieved:

[0089] 发送端与接收端进行能力协商,在所述能力协商过程中所述发送端和接收端将自身的PHC支持能力告知对端;在头压缩机制建立过程中,所述发送端向接收端发送含有连接标识、分类器信息以及对应的PHC信息的连接建立消息。 [0089] The transmitter and the receiver terminal capability negotiation, the sending end and receiving end of the capability negotiation process of the PHC its ability to support peer inform; header compression scheme in the process of establishing the sending end to the receiving sends contain connection identification information, connecting PHC and corresponding classification information establishment message.

[0090] 图8为以下行场景为例说明本发明实施例在PHC初始上下文建立后压缩状态发生变化更新压缩状态的过程。 [0090] FIG 8 is an example scenario following line embodiment of the invention the process status change update the compressed state of compression after initial context setup PHC. 参见图8所示,本发明实施例的具体过程如下: Referring to FIG. 8, the specific embodiments of the process of the present invention are as follows:

[0091] 步骤801:在基本能力协商(SBC)过程中,MS将自身对PHC支持的能力发送给接入网;所述接入网将自身的PHC支持能力发送给MS。 [0091] Step 801: basic capability negotiation (SBC) process, MS PHC ability to send itself to the access support; the access network sends PHC its support capability to the MS. 此时的支持能力包括PHC静态参数。 At this time, the ability to support PHC include static parameters.

[0092] 步骤802:可选地,MS与接入网之间进行接入认证过程。 [0092] Step 802: Optionally, the access authentication procedure between the MS and the access network.

[0093] 步骤803:接入网发送DSA请求消息给MS,其中,包含连接标识,分类器信息以及对应的PHC信息。 [0093] Step 803: the access network sends DSA request message to the MS, wherein the connection identifier information comprises PHC, and corresponding classification information.

[0094] 步骤804:MS发送DSA响应消息给接入网,其中,包含对请求消息的接收结果,PHC参数的接受结果。 [0094] Step 804: MS transmits DSA response message to the access network, wherein the request message comprises receiving the result of receiving the results of PHC parameters. 步骤803和804后,终端和接入网之间就建立了PHC的初始上下文。 After steps 803 and 804, between the terminal and the access network is established initial context of PHC.

[0095] 步骤805:接入网收到下行数据时,将收到的下行数据进行缓存,然后按照上述初始上下文进行头压缩操作,并且检测下行数据的数据包头是否出现了变化,并且是否满足状态转变的需求。 [0095] Step 805: When the access network receives the downlink data, the downlink data received and cached, then follow the above header compression initial context, and detects whether the downlink data packet header data has changed, and the state is satisfied changing needs.

[0096] 步骤806:—旦发现下行数据的数据包头发生变化,并且满足状态转变的需求,则需要在所述下行数据包的MAC头后面增加一个子头,把更新后的PHC参数通知给MS。 [0096] Step 806: - once found the downlink data packet header data is changed, and the state transitions to meet the demand, it is necessary to add a sub-header in the MAC header back the downlink data packet, the notification PHC updated parameters to the MS .

[0097] 步骤807:如果MS和接入网之间协商了反馈以及反馈模式,则终端接受到上述子头后,进行验证,即CRC或者消息摘要验证,终端将验证结果反馈给接入网;如果反馈需要资源分配,则接入网可以提前为终端分配反馈资源。 [0097] Step 807: After the negotiation between the feedback and the feedback mode if the MS and the access network, the terminal receives the head of the sub, to verify that the CRC or message digest authentication, terminal authentication result back to the access network; If you need feedback resource allocation, the access network resources can be allocated ahead of feedback for the terminal.

[0098] 以上实施实例中是在业务连接建立过程中实现压缩机制的建立,即在空口连接建立时就确定需要应用头压缩机制并且协商初始动态参数,实际上还可以是空口连接建立时没有确定要应用头压缩机制,而是在空口连接建立了一段时间后,有需求(例如空口资源紧张)触发应用头压缩机制。 Example to achieve the establishment of a compression mechanism in the traffic connection establishment procedure, i.e. it is determined that needs to be applied header compression scheme and to negotiate the initial dynamic parameter when the air interface connection setup, in fact, may be not determined that the air interface connection setup [0098] the above embodiment to apply the header compression mechanism, but after the air interface connection established for some time, there is a demand (for example, air interface resource constraints) to trigger the application header compression mechanism. 此时,可以采用DSC-REQ/RSP消息协商初始动态参数。 In this case, DSC-REQ / RSP message dynamically negotiate the initial parameters can be employed. 同样,也可以在头压缩已经应用的时候,通过DSC-REQ/RSP来取消该空口连接上的头压缩。 Likewise, compression may be applied in the first time has to cancel the header compression on the air interface via DSC-REQ / RSP.

[0099] 参见图9所示,本发明实施例提供的一种无线网络中头压缩的处理系统,包括:压缩器和解压缩器,其中, As shown in [0099] Referring to Figure 9, one embodiment provides a wireless network system according to the header compression processing of the present invention, comprising: a compressor and decompressor, wherein,

[0100] 所述压缩器91,用于与所述解压缩器建立PHC初始上下文;在确定需要转变压缩状态时,将状态转变信息发送解压缩器,所述状态转变信息为压缩机制变化信息;向所述解压缩器发送压缩的数据包; [0100] The compressor 91, and used to establish initial context PHC the decompressor; when determining the need to change the compressed state, the state transition information transmission decompressor, the state transition information change information compression mechanism; transmit the compressed data to the packet decompressor;

[0101] 所述解压缩器92,用于与所述压缩器建立PHC初始上下文;利用所述状态转变信息对来自压缩器的数据包进行解压缩处理。 [0101] The decompressor 92, for establishing the initial context PHC compressor; using the state transition information from the packet compressor performs decompression processing. [0102] 所述压缩器91包括:第一上下文建立单元911、状态转变信息发送单元912以及发送处理单元913。 [0102] The compressor 91 comprises: a first context setup unit 911, state transition information transmitting unit 912 and a transmission processing unit 913. [0103] 第一上下文建立单元911,用于与所述解压缩器进行PHC初始上下文协商,建立PHC初始上下文;[0104] 状态转变信息发送单元912,用于在确定需要转变压缩状态时,发送MACPDU给所述解压缩器,所述MAC PDU的MAC头含有MAC PDU中是否携带状态转变子头的指示,以及状态转变子头,所述状态转变子头中携带状态转变信息;[0105] 发送处理单元913,用于对发送给所述解压缩器的数据包进行压缩,并向所述解压缩器发送压缩后的数据包。 [0103] The first context establishment unit 911, for the decompressor context initial negotiation PHC, PHC establish initial context; [0104] state transition information transmitting unit 912, configured to, when determining the need to change the compressed state, the transmission MACPDU to the decompressor, the MAC PDU comprises a MAC header that indicates whether the MAC PDU carrying the status transition subheader, and the state transition sub-header, sub-header in the state transition carried state transition information; [0105] send processing unit 913, configured to send to the decompressor to compress packets, and the data packet transmission solution compression device. [0106] 所述压缩器91还可以包括:第一更新单元914,用于在状态机制发生改变时,利用所述状态转变信息更新压缩状态。 [0106] The compressor 91 may further comprise: a first updating unit 914, the mechanism for changes in the state, using the state transition information update compressed state. [0107] 所述解压缩器92可以包括:第二上下文建立单元921和接收处理单元922。 The [0107] decompressor 92 may comprise: a second context establishing unit 921 and the reception processing unit 922. [0108] 第二上下文建立单元921,用于与所述压缩器进行PHC初始上下文协商,建立PHC 初始上下文;[0109] 接收处理单元922,用于利用所述状态转变信息对来自压缩器的数据包进行解压缩处理。 [0108] The second context establishment unit 921, for the initial context PHC negotiation with the compressor, to establish initial context PHC; [0109] reception processing unit 922, configured to use the state transition information from the data compressor packet decompression process. [0110] 所述解压缩92还可以包括:第二更新单元923,用于在收到所述状态转变信息后, 利用所述状态转变信息压缩端更新解压缩状态。 [0110] The decompressor 92 may further comprise: a second updating unit 923, after receiving the state transition information, using the state transition information compression end updated decompression state. [0111] 所述解压缩92还可以包括:反馈单元924,用于在收到所述状态转变信息后,向所述压缩器发送反馈信息。 [0111] The decompressor 92 may further include: a feedback unit 924, after receiving the state transition information is transmitted to the compression feedback information. [0112] 参见图10所示,本发明实施例的无线网络中头压缩的反馈处理系统,可以包括: 压缩器11和解压缩器12,其中,[0113] 所述压缩器11,用于确定需要转变压缩状态时,将状态转变信息发送给解压缩器, 所述状态转变信息为压缩机制变化信息;收到来自解压缩器的反馈信息后,利用所述状态转变信息更新压缩状态;[0114] 所述解压缩器12,用于利用所述状态转变信息更新解压缩状态,并向压缩器发送反馈信息。 , The radio network of the first embodiment of the present invention compressed feedback processing system [0112] Referring to FIG 10, may include: a compressor 11 and decompressor 12, wherein [0113] the compressor 11, required for determining when compressed state transition, the state transition information to the decompressor, the state transition information compression mechanism change information; after receiving the feedback information from the decompressor, using the state transition information update compressed state; [0114] the decompressor 12, using the state transition for decompression state information update, and transmits the feedback information compressor. [0115] 所述压缩器11可以包括:[0116] 状态转变信息发送单元111,用于在确定需要转变压缩状态时,发送MACPDU给所述解压缩器,所述MAC PDU的MAC头含有MAC PDU中是否携带状态转变子头的指示,以及状态转变子头,所述状态转变子头中携带状态转变信息;[0117] 第一更新单元112,用于收到来自解压缩器的反馈信息后,利用所述状态转变信息更新压缩状态。 [0115] The compressor 11 may include: [0116] state transition information transmission unit 111, configured to, when determining the need to change the compressed state, MACPDU sent to the decompressor, the MAC PDU comprises a MAC header MAC PDU state transition indicates whether it carries a sub-header, sub-header and the state transition, the state transition in the sub-header carried state transition information; [0117] a first updating unit 112, the feedback information from the decompressor to receive, using the state transition information update compressed state. [0118] 所述解压缩器12可以包括:[0119] 第二更新单元121,用于利用所述状态转变信息更新解压缩状态,[0120] 反馈单元122,用于向压缩器发送反馈信息。 [0118] The decompressor 12 may comprise: [0119] a second updating unit 121, configured to use the state transition information update decompression state, [0120] The feedback unit 122, configured to send feedback information to the compressor. [0121] 参见图11所示,本发明实施例提供的一种通信系统,包括:[0122] 发送装置20,用于与接收端进行能力协商,在所述能力协商过程中所述自身的PHC支持能力告知所述接收装置21 ;对接收装置进行接入认证,向接收装置21发送DSA请求消息,其中包括连接标识、分类器信息以及对应的PHC信息; [0121] Referring to Figure 11, the embodiment of the present invention is provided in a communication system, comprising: [0122] transmitting device 20, and for receiving terminal capability negotiation, the PHC itself in the capability negotiation process support capability informing the receiving apparatus 21; means for receiving the access authentication request message 21 transmitted to the receiving apparatus DSA, including connection identification information and classification information corresponding to PHC;

[0123] 接收装置21,用于与接收端进行能力协商,在所述能力协商过程中所述自身的PHC支持能力告知所述发送装置20 ;收到所述DSA请求后,向所述发送装置20反馈DSA响应消息,其中包括请求消息的接收结果、PHC参数的接收结果。 [0123] receiving means 21 for receiving the terminal capability negotiation, the capability negotiation process in the ability to support itself PHC informing the transmitting apparatus 20; after receiving the DSA request to the transmitting apparatus DSA 20 in response to a feedback message, wherein the request message includes a reception result, a reception result PHC parameters.

[0124] 在本发明实施例中,压缩端确定需要转变压缩状态时,可以将状态转变信息发送解压缩端,所述解压缩端利用所述状态转变信息对来自压缩端的数据包进行解压缩处理,因此,可以对变化的动态参数实时进行状态改变。 [0124] In an embodiment of the present invention, when the terminal determines that the compression compressed state transition, the state transition information may be transmitted decompressor, the decompressor using the state transition information packets from the compression end of the decompression processing Therefore, it is possible to change the dynamic parameters in real-time status change. 这种方式而且,这种方式可以在MAC层进行头压缩,也可以对数据包的以太网包头,IP数据包头,UDP/TCP以及其他协议头进行压缩。 Further this way, this embodiment may be performed at the MAC layer header compression, may be an Ethernet packet header, the IP header, UDP / TCP and other protocol header compression. 而且,本发明实施例中还提供了实时的反馈机制,对状态改变指示信息进行反馈,确保更新操作的准确度。 Further, embodiments of the present invention also provides real-time feedback mechanism, feedback information indicating the status change, the update operation to ensure accuracy.

[0125] 本领域的技术人员可以理解,本发明实施例中所列举的信令消息及各项参数的内容格式仅是示例性的,本发明的实施例并未限定所述内容格式的具体表现形式。 [0125] Those skilled in the art will appreciate, the signaling message recited examples and embodiments of the present invention, the content format parameters are merely exemplary embodiments of the present invention is not limited to the specific expression format of the content form.

[0126] 显然,本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。 [0126] Obviously, those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. 这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。 Thus, if these modifications and variations of the present invention fall within the claims of the invention and the scope of equivalents thereof, the present invention intends to include these modifications and variations.

Claims (34)

1.一种无线网络中头压缩的处理方法,其特征在于,该方法包括: 压缩端和解压缩端建立数据包头压缩PHC初始上下文; 需要转变压缩状态时,所述压缩端将状态转变信息发送给所述解压缩端; 所述解压缩端利用所述状态转变信息对来自所述压缩端的数据包进行解压缩处理; 所述压缩端将状态转变信息发送给解压缩端,包括:所述压缩端发送媒体接入控制MAC协议数据包单元PDU给所述解压缩端,其中所述MAC PDU的MAC头含有MAC PDU中是否携带状态转变子头的指示,以及状态转变子头,所述状态转变子头中携带状态转变信息,或,携带状态转变信息以及状态转变信息的序列号。 1. A processing method of header compression in a wireless network, wherein the method comprises: establishing the compression end header decompression end PHC initial compression context; when the need to change the compressed state, the compression end information to the state transition the decompressor; the decompressor using the state transition information for the compressed data packets from the terminal performs decompression processing; the end of the compression state transition information to the decompressor, comprising: a compression end transmitting medium access control MAC protocol data unit (PDU) packet to the decompressor, wherein the MAC PDU comprises a MAC header that indicates whether the MAC PDU carrying the status transition subheader, and the state transition sub-header, the sub-state transition header carries the state transition information, or the carrying state transition information and the serial number of the state transition.
2.根据权利要求1所述的方法,其特征在于,所述状态转变子头的指示为MAC头中的空闲比特位,或为MAC头中的空闲比特位和可扩展的子头域ESF的组合。 2. The method according to claim 1, characterized in that the indicating state transition to the idle sub-header bits of the MAC header or the MAC header extension spare bits and the sub-header field ESF combination.
3.根据权利要求1所述的方法,其特征在于,所述状态转变子头还包括:循环冗余校验CRC 码, 则所述解压缩端进行解压缩处理前,该方法进一步包括: 所述解压缩端利用所述CRC码对压缩端进行验证。 3. The method according to claim 1, wherein said state transition subheader further comprising: a cyclic redundancy check CRC code, the decompressor decompresses the pretreatment, the method further comprising: the said decompressor using the CRC code to validate the compression end.
4.根据权利要求1所述的方法,其特征在于,所述状态转变子头还包括:由发送端和接收端之间的共享密钥产生的消息摘要; 则所述解压缩端进行解压缩处理前,该方法进一步包括: 所述解压缩端利用所述消息摘要对压缩端进行认证。 4. The method according to claim 1, wherein said state transition subheader further comprising: a message digest generated by the shared key between the transmitting and receiving ends; then the decompressor decompresses pretreatment, the method further comprising: using the decompressor end of the compressed message digest authentication.
5.根据权利要求1所述的方法,其特征在于,所述状态转变信息包括:数据包头压缩索引PHCI以及对应的动态参数修改值。 The method according to claim 1, wherein said state transition information comprises: a data header compression index PHCI and the corresponding dynamic parameter modification value.
6.根据权利要求1所述的方法,其特征在于,需要转变压缩状态时,所述压缩端利用所述状态转变信息直接更新压缩状态,并采用更新后的压缩状态对所述MAC PDU进行压缩, 则所述解压缩端利用所述状态转变信息对来自压缩端的数据包进行解压缩处理,包括: 所述解压缩端收到所述MAC PDU后,如果所述MAC PDU中含有状态转变子头的指示,利用所述MAC rou中状态转变子头中的状态转变信息,更新解压缩状态,并利用更新后的解压缩状态对所述MAC PDU进行解压缩。 6. The method according to claim 1, wherein, when the need to change the compressed state, the compression ends with the state transition information is updated directly compressed state and a compressed state after updating of the MAC PDU is compressed , then the decompressor using the state transition information from the compressed data packet decompression processing terminal, comprising: a rear end of the decompressor receives the MAC PDU, if the MAC PDU sub-header contains a state transition indicating, using the MAC rou state transition in the state transition information in the sub-header is updated decompression state, and using the updated compressed state solution of the MAC PDU is decompressed.
7.根据权利要求1所述的方法,其特征在于,所述MAC PDU采用原压缩状态机制进行压缩或没有进行压缩,并且,所述MAC PDU中还进一步包括压缩机制变化指示信息, 压缩端在所述压缩机制变化指示的时间或事件发生时,更新压缩状态,并利用更新后的压缩状态对要发送给解压缩端的MAC PDU进行压缩; 则所述解压缩端根据所述压缩机制变化指示的时间或事件发生时,利用所述状态转变信息更新解压缩端的解压缩状态,并利用更新后的解压缩状态对所述压缩机制变化指示的时间或事件发生之后的来自所述压缩端的数据包进行解压缩处理。 7. The method according to claim 1, wherein the MAC PDU using the original compression mechanism to compress or not compress, and the MAC PDU further comprising a further indication information change the compression mechanism, the compression end the compression mechanism change indication time or event occurred, updated compressed status, and update the compression state to be transmitted to the decompressor to compress the MAC PDU; the decompressor is the compression mechanism according to the change indication when the time or event occurs, using the state transition information update Solutions Solutions compressed end state, and use solution to the updated compressed status data packets from the compression end time or after an event indicative of a change mechanism for generating the compressed decompression processing.
8.根据权利要求1所述的方法,其特征在于,所述MAC PDU采用原压缩状态机制进行压缩或没有进行压缩,则在所述压缩端发送MAC PDU给所述解压缩端之后,所述解压缩端利用所述状态转变信息对来自压缩端的数据包进行解压缩处理前,该方法进一步包括: 解压缩端收到所述MAC PDU后, 利用所述状态转变信息更新解压缩状态,并向压缩端发送反馈信息,其中含有更新结果;压缩端根据所述反馈信息中的更新结果确定是否更新压缩状态,如果是,则压缩端利用所述状态转变信息更新压缩状态。 8. The method according to claim 1, wherein the MAC PDU using the original compression mechanism for compression or no compression, the compression end after the MAC PDU sent to the decompressor, the decompressor using the state transition information from the compressed data packet is decompressed before the end of treatment, the method further comprising: after the MAC PDU decompressor receives, using the state transition information update Solutions compressed state, and compression end transmitting feedback information containing the update result; compression end according to the update result information in determining whether to update a compressed state, if so, the compression end using the state transition information update compressed state feedback.
9.根据权利要求1所述的方法,其特征在于,所述MAC PDU采用原压缩状态机制进行压缩或没有进行压缩,则在所述压缩端发送MAC PDU给所述解压缩端之后,所述解压缩端利用所述状态转变信息对来自压缩端的数据包进行解压缩处理前,该方法进一步包括:解压缩端收到所述MAC rou后,向压缩端发送反馈信息,其中含有接收结果;压缩端根据所述反馈信息中的接收结果确定是否更新压缩状态,如果是,则压缩端利用所述状态转变信息更新压缩状态,并且在更新压缩端状态后的未压缩MAC PDU或者第一个压缩MAC PDU上携带压缩端状态已更新指示信息,当解压缩端收到该指示信息后,利用所述状态转变信息更新解压缩状态。 9. The method according to claim 1, wherein the MAC PDU using the original compression mechanism for compression or no compression, the compression end after the MAC PDU sent to the decompressor, the before using the decompressor state transition information packets from the compression end of the decompression processing, the method further comprising: receiving the rear end of the decompressor MAC rou, send feedback information to the compression end, containing a reception result; compression end of determining whether to update the compressed state based on the reception result of the feedback information, if so, the compression end state transition information update using the compressed state and the uncompressed update the MAC PDU after the end of the first state or a compressed MAC compression end carrying the PDU status indication information has been updated, when the decompressor receives the instruction information, by using the state transition information update decompression state.
10.根据权利要求8所述的方法,其特征在于,所述解压缩端通过设置的信令消息向所述压缩端发送反馈信息,或,通过MAC PDU向所述压缩端发送反馈信息,或,通过特定的物理资源向压缩端发送反馈信息。 10. The method according to claim 8, wherein the decompressor sending a signaling message by setting the feedback information to the compression end, or transmits the feedback information through the MAC PDU to the compression end, or , sends feedback information to the compressed over a particular physical resource.
11.根据权利要求8所述的方法,其特征在于,当解压缩端为网络侧,压缩端为终端侧时,所述解压缩端通过特定的物理资源向压缩端发送反馈信息之前,进一步包括:网络侧向终端侧发送含有用于指示终端进行PHC反馈的特定物理资源的下行资源分配消息。 11. The method according to claim 8, wherein, when the decompressor network side, the compression end terminal side, the decompressed before sending the feedback information to the end of the compression end over a particular physical resource, further comprising : the network side to the terminal side transmitting downlink resource comprising a specific terminal for indicating physical resource PHC feedback allocation message.
12.根据权利要求8所述的方法,其特征在于,当解压缩端为终端侧,压缩端为网络侧时,解压缩端在特定的资源上向压缩端发送反馈信息之前,进一步包括:网络侧向终端发送上行资源分配消息;终端收到所述上行资源分配消息时,如果终端有反馈信息,则向网络侧发送反馈信息。 12. The method according to claim 8, wherein, when the decompressor of the terminal side, the network side of the compression end, decompressor prior to transmission to the compression end feedback information on a specific resource, further comprising: a network side terminal transmits uplink resource allocation message; when the uplink resource allocation message received terminal, if the terminal feedback information, the feedback information is sent to the network side.
13.根据权利要求12所述的方法,其特征在于,所述反馈信息还包括反馈信息是否发送完的指示,如果所述反馈信息没有发送完,则网络侧一直为所述终端分配资源,直到所述终端的反馈信息发送完毕。 13. The method according to claim 12, wherein the feedback information further comprises sending the feedback information indicating whether, and if the feedback information is not transmitted and the network side has allocated resources to the terminal, until transmitting feedback information of the terminal is completed.
14.根据权利要求12所述的方法,其特征在于,所述网络侧采用轮询方式向所述终端发送上行资源分配消息,或,所述网络侧是在收到终端的反馈请求后,向终端发送上行资源分配消息。 14. The method according to claim 12, wherein the polling of the network side transmits uplink resource allocation message to the terminal or the network side after receiving the feedback request is the terminal, to the terminal transmits an uplink resource allocation message.
15.如权利要求1所述的方法,其特征在于,所述压缩端和解压缩端建立数据包头压缩PHC初始上下文,包括:压缩端与解压缩端进行能力协商,在所述能力协商过程中所述压缩端和解压缩端将自身的PHC支持能力告知对端;在头压缩机制建立过程中,所述压缩端向解压缩端发送含有连接标识、分类器信息以及对应的PHC信息的连接建立消息。 15. The method according to claim 1, characterized in that the end of the compression and decompression end PHC establish initial context data packet header compression, comprising: a terminal end of the compression and decompression capability negotiation, the negotiation process in the capability said end of the compression end and decompression ability to inform its peer support PHC; establishment process in the first compression mechanism, the compression end decompression sends contain connection identification information, connecting PHC and corresponding classification information establishment message.
16.根据权利要求15所述的方法,其特征在于,在压缩端向解压缩端发送含有连接标识、分类器信息以及对应的PHC信息的连接建立消息之后,该方法进一步包括:所述解压缩端向所述压缩端反馈针对每个PHC信息的接收结果。 After 16. The method according to claim 15, wherein the compression connector comprising sends connection identification information and corresponding classification information establishment message to the PHC solution at the compression end, the method further comprising: decompressing the to the end of the compression end result of receiving feedback information for each of PHC.
17.根据权利要求15所述的方法,其特征在于,所述PHC信息包括:数据包头压缩大小PHCS初始值、数据包头压缩域值PHCF初始值、数据包头压缩确认PHCV初始值、数据包头压缩掩码PHCM初始值、PHC1、以及反馈相关参数中的一种或几种,所述反馈相关参数包括是否需要反馈、反馈信道CID和反馈模式。 17. The method according to claim 15, wherein said PHC information comprising: a data size of the compressed header PHCS initial value, the compression packet header field value PHCF initial value, the data confirm PHCV initial value header compression, header compression mask PHCM code initial value, PHC1, and one or more feedback-related parameters, the parameters including whether feedback feedback, feedback channel feedback mode and a CID.
18.根据权利要求17所述的方法,其特征在于,所述PHC信息还进一步包括:采用的消息摘要算法相关参数,和/或,CRC算法相关参数。 18. The method according to claim 17, wherein said information further PHC further comprising: message digest algorithm parameters employed, and / or, CRC algorithm parameters.
19.一种无线网络中头压缩的反馈处理方法,其特征在于,该方法包括:需要转变压缩状态时,压缩端将状态转变信息发送给解压缩端;解压缩端收到该状态转变信息后,利用状态转变信息更新解压缩状态,并向压缩端发送反馈信息;压缩端收到反馈信息后,利用所述状态转变信息更新压缩状态;所述压缩端将状态转变信息发送给解压缩端,包括:所述压缩端发送MACPDU给所述解压缩端,其中MAC PDU的MAC头含有MAC PDU中是否携带状态转变子头的指示,以及状态转变子头,所述状态转变子头中携带状态转变信息,或,携带状态转变信息和状态转变信息的序列号。 19. A method for feedback processing in a wireless network header compression, wherein the method comprises: when the need to change the compressed state, the compression end state transition information to the decompressor; after the state transition information received decompressor using the state transition information update decompression state, and send feedback information compression end; end of the compressed feedback information is received, using the state transition information update compressed state; the end of the compression state transition information to the decompressor, comprising: the compressor sends to the decompressor MACPDU, wherein the MAC PDU comprises a MAC header that indicates whether the MAC PDU carrying the status transition subheader, and the sub-header state transition, the state transition carried state transition subheader information, or the carrying state transition information and the state transition sequence number information.
20.根据权利要求19所述的方法,其特征在于,所述状态转变子头为MAC头中的空闲比特位,或为MAC头中的空闲比特位和ESF的组合。 20. The method of claim 19, wherein the state transition to the idle sub-header in the MAC header bits or idle bits ESF and combinations of MAC header.
21.根据权利要求19所述的方法,其特征在于,所述状态转变子头还包括:CRC码,则所述解压缩端进行解压缩处理前,该方法进一步包括:所述解压缩端利用所述CRC码对压缩端进行验证。 21. The method of claim 19, wherein said head further comprises a sub-state transition: CRC code, the decompressor performs decompression processing before, the method further comprising: using the decompressor the CRC code to validate the compression end.
22.根据权利要求19所述的方法,其特征在于,所述状态转变子头还包括:由发送端和接收端之间的共享密钥产生的消息摘要;则所述解压缩端进行解压缩处理前,该方法进一步包括:所述解压缩端利用所述消息摘要对压缩端进行认证。 22. The method of claim 19, wherein said state transition subheader further comprising: a message digest generated by the shared key between the transmitting and receiving ends; then the decompressor decompresses pretreatment, the method further comprising: using the decompressor end of the compressed message digest authentication.
23.根据权利要求19所述的方法,其特征在于,所述状态转变信息包括:PHCI以及对应的动态参数修改值。 23. The method according to claim 19, wherein said state transition information comprises: PHCI and corresponding dynamic parameter modification value.
24.根据权利要求19所述的方法,其特征在于,所述解压缩端通过设置的信令消息向所述压缩端发送反馈信息,或,通过扩展后的MAC PDU向所述压缩端发送反馈信息,或,通过特定的物理资源向压缩端发送反馈信息。 24. The method according to claim 19, wherein the decompressor sending a signaling message by setting the feedback information to the compression end, or sends feedback to the MAC PDU is compressed by the extended information, or sent to the compression end over a particular physical resource feedback information.
25.根据权利要求19所述的方法,其特征在于,当解压缩端为网络侧,压缩端为终端侧时,所述解压缩端通过特定的物理资源向压缩端发送反馈信息之前,进一步包括:网络侧通过下行资源分配消息通知终端PHC反馈的物理资源向终端发送PHC反馈子头。 25. The method according to claim 19, wherein, when the decompressor network side, the compression end terminal side, the feedback information prior to transmission to the compression end over a particular physical resource the decompressor, further comprising : the network side notifies the terminal PHC physical resource through the downlink feedback resource allocation message transmitted to the terminal PHC feedback subheader.
26.根据权利要求19所述的方法,其特征在于,当解压缩端为终端侧,压缩端为网络侧时,解压缩端在特定的资源上向压缩端发送反馈信息之前,进一步包括:网络侧向终端发送上行资源分配消息;终端收到所述上行资源分配消息时,如果终端有反馈信息,则向网络侧发送反馈信息, 其中包括反馈信息是否发送完的指示,如果所述反馈信息没有发送完,则网络侧一直为所述终端分配资源,直到所述终端的反馈信息发送完毕。 26. The method according to claim 19, wherein, when the decompressor of the terminal side, the network side of the compression end, decompressor prior to transmission to the compression end feedback information on a specific resource, further comprising: a network side terminal transmits uplink resource allocation message; when the terminal receives uplink resource allocation message, if the terminal feedback information, the feedback information is sent to the network side, which includes sending the feedback information indicating whether, and if the feedback information is not After transmission, the network resource has been allocated for the terminal, the terminal feedback information until the transmission is completed.
27.根据权利要求26所述的方法,其特征在于,所述网络侧采用轮询方式向所述终端发送上行资源分配消息,或,所述网络侧是在收到终端的反馈请求后,向终端发送上行资源分配UL-MAP消息。 27. A method according to claim 26, wherein the polling of the network side transmits uplink resource allocation message to the terminal or the network side after receiving the feedback request is the terminal, to the terminal transmits uplink resource allocation UL-MAP message.
28.一种无线网络中头压缩的处理系统,其特征在于,该系统包括:压缩器和解压缩器,其中,所述压缩器,用于与所述解压缩器建立PHC初始上下文;在需要转变压缩状态时,将状态转变信息发送解压缩器;向所述解压缩器发送压缩的数据包; 所述解压缩器,用于与所述压缩器建立PHC初始上下文;利用所述状态转变信息对来自压缩器的数据包进行解压缩处理; 所述压缩器包括: 第一上下文建立单元,用于与所述解压缩器进行PHC初始上下文协商,建立PHC初始上下文; 状态转变信息发送单元,用于在需要转变压缩状态时,发送MAC PDU给所述解压缩器,所述MAC PDU的MAC头含有MAC PDU中是否携带状态转变子头的指示,以及状态转变子头,所述状态转变子头中携带状态转变信息; 发送处理单元,用于对发送给所述解压缩器的数据包进行压缩,并向所述解压缩器发送 28. A wireless network header compression processing system, characterized in that the system comprising: a compressor and decompressor, wherein the compressor, used to establish the initial context PHC decompressor; the need to change when a compressed state, the state transition information transmission decompressor; transmitting the compressed data packet to the decompressor; the decompressor, for establishing the initial context PHC compressor; using the state transition information data packet from the compressor performs decompression processing; said compressor comprising: a first context setup means for negotiating with the initial context PHC decompressor to establish initial context PHC; state transition information transmitting means for when the need to change the compressed state, the MAC PDU is sent to the decompressor, the MAC PDU comprises a MAC header indicating whether the carried state transition of the MAC PDU sub-header, sub-header and the state transition, the state transition subheader carried state transition information; transmission processing unit, configured to send to the decompressor to compress packets, transmitted to the decompressor 压缩后的数据包。 Compressed data packet.
29.根据权利要求28所述的系统,其特征在于,所述解压缩器包括: 第二上下文建立单元,用于与所述压缩器进行PHC初始上下文协商,建立PHC初始上下文; 接收处理单元,用于利用所述状态转变信息对来自压缩器的数据包进行解压缩处理。 29. The system according to claim 28, wherein the decompressor comprises: a second context setup unit for PHC initial context negotiation with the compressor, to establish initial context PHC; reception processing unit, utilizing said state transition information for the packet from the compressor performs decompression processing.
30.根据权利要求28所述的系统,其特征在于,所述压缩器还包括: 第一更新单元,用于在状态机制发生改变时,利用所述状态转变信息更新压缩状态。 30. The system according to claim 28, wherein the compressor further comprises: a first updating unit configured to, when the state machine changes, using the state transition information update compressed state.
31.根据权利要求28所述的系统,其特征在于,所述解压缩器还包括: 第二更新单元,用于在收到所述状态转变信息后,利用所述状态转变信息压缩器更新解压缩状态。 31. The system according to claim 28, wherein the decompressor further comprises: a second updating unit, after receiving the state transition information, using the state transition information compressor updates Solutions compressed state.
32.根据权利要求28所述的系统,其特征在于,所述解压缩器还包括: 反馈单元,用于在收到所述状态转变信息后,向所述压缩器发送反馈信息。 32. The system according to claim 28, wherein the decompressor further comprises: a feedback unit, after receiving the state transition information is transmitted to the compression feedback information.
33.一种无线网络中头压缩的反馈处理系统,其特征在于,该系统包括:压缩器和解压缩器,其中, 所述压缩器,用于需要转变压缩状态时,将状态转变信息发送给所述解压缩器,所述状态转变信息为压缩机制变化信息;收到来自解压缩器的反馈信息后,利用所述状态转变信息更新压缩状态; 所述解压缩器,用于利用所述状态转变信息更新解压缩状态,并向压缩器发送反馈信息; 所述压缩器包括:状态转变信息发送单元,用于在确定需要转变压缩状态时,发送MACPDU给所述解压缩器,所述MAC PDU的MAC头含有MAC PDU中是否携带状态转变子头的指示,以及状态转变子头,所述状态转变子头中携带状态转变信息; 第一更新单元,用于收到来自解压缩器的反馈信息后,利用所述状态转变信息更新压缩状态。 33. A wireless network system header compression feedback process, characterized in that the system comprising: a compressor and decompressor, wherein the compressor, when a need to change the compressed state, the state transition information to the said decompressor, the state transition information change information compression mechanism; receive feedback from the decompressor, the state transition information update using the compressed state; the decompressor, using the state transition for decompression state information update, feedback information is transmitted to the compressor; said compressor comprising: a state transition information transmitting unit configured to, when determining the need to change the compressed state, MACPDU sent to the decompressor, the MAC PDU of after a first updating unit configured to receive feedback from the decompressor; indicates whether the MAC header contains the MAC PDU carrying the status transition subheader, and the state transition sub-header, sub-header in the state transition carried state transition information , using the state transition information update compressed state.
34.根据权利要求33所述的系统,其特征在于,所述解压缩器包括: 第二更新单元,用于利用所述状态转变信息更新解压缩状态, 反馈单元,用于向压缩器发送反馈信息。 34. The system according to claim 33, wherein the decompressor comprises: a second updating unit configured to update with the state transition information Solutions compressed state feedback unit for transmitting feedback to the compressor information.
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