WO2011020362A1 - 一种终端能力协商的方法、***和WiMAX基站 - Google Patents
一种终端能力协商的方法、***和WiMAX基站 Download PDFInfo
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- WO2011020362A1 WO2011020362A1 PCT/CN2010/073582 CN2010073582W WO2011020362A1 WO 2011020362 A1 WO2011020362 A1 WO 2011020362A1 CN 2010073582 W CN2010073582 W CN 2010073582W WO 2011020362 A1 WO2011020362 A1 WO 2011020362A1
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- base station
- capability
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
Definitions
- the present invention relates to the field of wireless communication networks of fourth-generation mobile communication systems, and more particularly, after terminals access global Interoperability for Microwave Access (WiMAX) wireless base stations, as terminals continuously move, different A method, system, and WiMAX base station for maintaining the capabilities of a terminal during handover between base stations.
- WiMAX Global Interoperability for Microwave Access
- the modern wireless communication field is gradually evolving from a small-capacity wireless network to a large-capacity wireless network, from a fixed network to a mobile-supported network. Mobility plays a vital role in keeping the communication of the terminal uninterrupted and the continuity and integrity of the data.
- WiMAX is a broadband wireless access technology based on the Institute of Electrical and Electronics Engineers (IEEE) 802.16 standard. In order to improve the utilization of spectrum resources to adapt to various broadband multimedia applications, WiMAX is used to represent future communications. Orthogonal Frequency Division Multiplexing (OFDM) / Orthogonal Frequency Division Multiple Access (OFDMA), Adaptive Antenna System (ASS), and more Advanced technologies such as Multiple-Input Multiple-Out-put (MIMO) provide high-speed connectivity to the Internet with data transmission distances up to 50km. WiMAX also has the advantages of Quality of Service (QoS), high transmission rate and rich and diverse services. With the development of technical standards, WiMAX will gradually realize the mobilization of broadband services.
- OFDM Orthogonal Frequency Division Multiplexing
- OFDMA Orthogonal Frequency Division Multiple Access
- ASS Adaptive Antenna System
- MIMO Multiple-Input Multiple-Out-put
- WiMAX also has the advantages of Quality of Service (QoS),
- the architecture of the entire system is mainly composed of three parts: a mobile terminal (Mobile Station, MS), an access network (ASN), and a core network (Connectivity Service Network. CSN).
- the ASN is composed of the target base station S and the access gateway (ASN-Gateway, ASN-GW).
- the interface between the MS and the base station (BS) is the R1 interface
- the interface between the BS and the ASN-GW is the R6 interface.
- the terminal needs to judge whether it needs to switch to a new base station to obtain better service during the movement.
- the terminal and the base station use the controlled handover mode to perform reselection of the target base station, and the controlled handover (Controlled Handover) process is better and the base station and the terminal are better.
- the behavior is prepared in advance, so the success rate is high.
- the base station has no time to prepare for pre-switching, and the terminal can only be allowed to be at the fastest speed immediately.
- the new target base station accesses the network.
- Uncontrolled Handover For example, the following scenarios are listed but are not limited to the following scenarios: 1) When the terminal moves, the terminal finds that the signal of the current serving base station is suddenly weak, even unable to The current serving base station maintains communication, but the terminal discovers that the current location can receive other base station signals by scanning or the like, and the terminal directly performs network reentry in the newly discovered base station with strong signal and attempts to obtain service at the new base station. ;
- the terminal finds that the signal of the current serving base station is weak, but the terminal finds that the current location can receive other base station signals with a slightly stronger signal by scanning or the like.
- the terminal attempts to control the handover to some of the stations, but in the process, the source serving base station signal is gradually weakened to the extent that it cannot maintain communication with the terminal, and the terminal discovers a new base station with better signal, since the terminal has already Loss of contact with the source serving base station can no longer notify the source serving base station, so the terminal instead performs network re-entry directly at the base station with the newly discovered signal and attempts to obtain service at the new base station.
- An existing uncontrolled handover process is shown in Figure 2.
- the terminal moves from the air interface under one base station to the air interface under another base station, the capability parameters of the base station, service flow parameters and media access control. (Media Access Control, MAC) layer information is subject to change.
- the NWG protocol specifies that in the Context Rpt message, only one set of capability parameters negotiated by the terminal and the source serving base station is allowed. However, the NWG protocol does not require that the content of the capability parameters in the terminal's own basic capability request (SBC-REQ) and registration request (REG-REQ) be carried.
- SBC-REQ basic capability request
- REG-REQ registration request
- the capability of the target base station may be different from the capacity of the source serving base station, and the capabilities of the terminal and the target base station need to be renegotiated, but the capability of the terminal itself does not pass the R6/R4 interface.
- Notifying the target base station, carrying only the terminal and source service base As a result of the station negotiation, the target base station cannot perform the capability negotiation with the terminal capability completely, but only the intersection of the capabilities of the target base station, the source serving base station, and the terminal.
- the ability of the terminal to enable is gradually reduced, resulting in a gradual narrowing of its own capabilities.
- a terminal with the capability of a Hybrid Automatic Repeat Request can disable the HARQ capability on the service flow after the initial access of the source service base station without the HARQ capability is enabled.
- the target base station HARQ capability is enabled. After the terminal to the target base station is not controlled to re-enter, the target base station can only negotiate the result of the negotiation between the source serving base station and the terminal capability. Therefore, the HARQ function of the target base station is still not enabled, so the terminal cannot The target base station that has already supported the HARQ capability turns on the function of using HARQ to transmit data, and the transmission quality cannot be better guaranteed.
- the present invention provides a method for terminating capability of a terminal, the method comprising: transmitting, by a source serving base station, a target serving base station to a target base station in a process of uncontrolled handover between global interoperating microwave access (WiMAX) base stations a context response message, the context response message carries a capability parameter negotiated by the source serving base station with the terminal, and a capability parameter of the terminal itself; and after the target base station receives the context response message, according to the context response message
- WiMAX global interoperating microwave access
- the capability parameter includes a basic capability (SBC) parameter and a registration capability (REG) parameter
- the source serving base station passes the basic capability response type-length-value (SBC-RSP TLV) field and the registration response type in the context response message.
- the length-value (REG-RSP TLV) field carries the capability parameter negotiated by the source serving base station with the terminal, and the basic capability request type in the context response message is -
- the Length-Value (SBC-REQ TLV) field and the Registration Request Type-Length-Value (REG-REQ TLV) field carry the terminal's own capability parameters.
- the step of the target base station performing the capability negotiation according to the capability parameter of the terminal and the capability parameter of the target base station includes: the target base station obtaining the intersection of the capability parameter of the target base station and the capability parameter of the terminal as a negotiation. Capability parameters.
- the step of notifying the terminal of the information about the new capability parameter obtained by the negotiation includes: the capability of the target base station to negotiate the terminal with the target base station, and the capability parameter negotiated by the terminal and the source serving base station is different.
- the parameter is used as a capability parameter to be updated, and the capability parameter to be updated is sent to the terminal by using a ranging response message.
- the method further includes: after receiving the ranging response message, the terminal updates the access according to the capability parameter that needs to be updated carried in the terminal The ability to enable after the target base station.
- the system for supporting terminal capability negotiation includes a WiMAX base station and a terminal, and the WiMAX base station includes a first uncontrolled handover processing module and a second uncontrolled handover processing module, where:
- the first uncontrolled handover processing module is configured to: perform an uncontrolled handover process when the WiMAX base station belongs to the source serving base station of the terminal that initiates the handover, and send a context response message to the target base station, where the context response message carries the a capability parameter negotiated by the source serving base station with the terminal and a capability parameter of the terminal itself;
- the second uncontrolled handover processing module is configured to: perform an uncontrolled handover process when the WiMAX base station belongs to the target base station of the terminal, and after receiving the context response message sent by the source serving base station, according to the target base station
- the capability parameter negotiates with the terminal's own capability parameter, and notifies the terminal of the negotiated capability parameter information, thereby avoiding narrowing of the terminal capability after the uncontrolled handover.
- the first uncontrolled handover processing module is responsive to the basic capability in the context response message
- the Type-Length-Value (SBC-RSP TLV) field and the Registration Response Type-Length-Value (REG-RSP TLV) field carry the capability parameters negotiated by the source serving base station with the terminal, and the basic information in the context response message is adopted.
- the capability request type-length-value (SBC-REQ TLV) field and the registration request type-length-value (REG-REQ TLV) field carry the terminal's own capability parameters, including the basic capability (SBC) parameters and registration. Capability (REG) parameters.
- the second uncontrolled handover processing module is configured to perform negotiation according to the capability parameter of the terminal and the capability parameter of the target base station in the following manner: the target base station performs the capability parameter of the target base station and the terminal itself The intersection of the capability parameters is the capability parameter obtained by negotiation.
- the second uncontrolled handover processing module is configured to notify the terminal of the information about the new capability parameter negotiated in the following manner: in the capability parameter negotiated between the terminal and the target base station, and the terminal and the source service
- the capability parameter with different capability parameters obtained by the base station is used as the capability parameter to be updated, and the capability parameter to be updated is sent to the terminal by using a ranging response message.
- the terminal is configured to: After receiving the ranging response message, update the capability that can be enabled after accessing the target base station according to the capability parameter that needs to be updated.
- the present invention further provides a Worldwide Interoperability for Microwave Access (WiMAX) base station supporting terminal capability negotiation, where the WiMAX base station includes a first uncontrolled handover processing module and a second uncontrolled handover processing module.
- the first uncontrolled handover processing module is configured to: perform an uncontrolled handover process when the WiMAX base station belongs to the source serving base station of the terminal that initiates the handover, and send a context response message to the target base station, where the context response message is sent.
- the second uncontrolled handover processing module is configured to: perform the non-when the WiMAX base station belongs to the target base station of the terminal After receiving the context response message sent by the source serving base station, the controlled handover process performs the capability negotiation according to the capability parameter of the target base station and the capability parameter of the terminal, and notifies the information about the capability parameter obtained by the negotiation.
- the terminal thereby avoiding the narrowing of the terminal capability after uncontrolled handover.
- the first uncontrolled handover processing module carries the basic capability response type-length-value (SBC-RSP TLV) field and a registration response type-length-value (REG-RSP TLV) field in the context response message.
- the capability parameter negotiated by the source serving base station with the terminal is carried by the basic capability request type-length-value (SBC-REQ TLV) field and the registration request type-length-value (REG-REQ TLV) field in the context response message.
- the terminal's own capability parameter, the capability parameter includes a basic capability (SBC) parameter and a registration capability (REG) parameter.
- the second uncontrolled handover processing module is configured to perform negotiation according to the capability parameter of the terminal and the capability parameter of the target base station in the following manner: the target base station sets the capability parameter and the location of the target base station The intersection of the terminal's own capability parameters is used as the capability parameter obtained by negotiation.
- the second uncontrolled handover processing module is configured to notify the terminal of the information about the new capability parameter negotiated in the following manner: in the capability parameter negotiated between the terminal and the target base station, and the terminal The capability parameter that is different from the capability parameter negotiated by the source serving base station is used as the capability parameter to be updated, and the capability parameter to be updated is sent to the terminal by using a ranging response message.
- the above embodiment prevents the terminal from being uncontrolled after the uncontrolled switching between different base stations as the terminal moves, resulting in the risk that the terminal itself has the capability to be narrowed because it is always disabled.
- FIG. 1 is a schematic diagram of a WiMAX wireless network architecture
- FIG. 2 is a flow chart of a prior successful uncontrolled handover procedure, in which R6 DP Reg Proc represents an R6 data tunnel registration establishment process
- FIG. 3 is the present invention.
- Step 301 The terminal initiates a ranging request message (RNG-REQ) to the target base station;
- Step 302 The target base station receives the ranging request message (RNG-REQ), and sends a context request message (Context_Req) to the source serving base station specified in the request message to obtain source side MAC context information (MAC Context);
- the capability parameter negotiated by the source serving base station with the terminal is encapsulated in a basic capability response type-length-value (SBC-RSP TLV) field and a registration response type-length-value (REG-RSP TLV) field, where The terminal's own capability parameters are encapsulated in the Basic Capability Request Type-Length-Value (SBC-REQ TLV) field and the Registration Request Type-Length-Value (REG-REQ TLV) field.
- the TLV is a format or an optional variable length field that represents a parameter by type, length, and value (Type, Length, Value).
- Step 304 After receiving the context response message, the target base station parses out the two sets of capability parameters, and performs capability negotiation according to the capability parameter of the target base station and the capability parameter of the terminal, and updates the service flow information according to the capability obtained by the negotiation.
- the R6 channel is established.
- the intersection of the capability parameter of the target base station and the capability parameter of the terminal is obtained as a negotiation. If the negotiated capability is not supported, the target base station needs to turn off the corresponding capabilities used in the traffic flow.
- Step 305 The capability parameter that is different from the capability parameter negotiated by the terminal and the source serving base station in the capability parameter negotiated by the target base station and the target base station is used as the capability parameter to be updated, and is carried in the ranging response to the terminal.
- the capability parameters to be updated are also carried in the RNG-RSP in the SBC-RSP TLV, REG-RSP TLV.
- Step 306 After receiving the RNG-RSP, the terminal updates the capability that can be enabled after accessing the target base station according to the capability parameter to be updated carried in the RNG-RSP. After the terminal updates its ability to enable after accessing the target base station, it automatically updates the service flow information associated with its capability.
- the controlled handover process of the foregoing embodiment carries two sets of parameters when the MAC context is delivered to the target base station through the Context_RPt. The set is the result of the negotiation between the source serving base station and the terminal capability, and the set is the terminal's own capability.
- the target base station can negotiate according to the capability of the terminal and the capability of the target base station, and the capability of the terminal can be prevented from being narrowed.
- the process is consistent with the existing process.
- the system for supporting terminal capability negotiation includes a WiMAX base station and a terminal
- the WiMAX base station includes a first uncontrolled handover processing module and a second uncontrolled handover processing module, where: the first uncontrolled handover processing
- the module is configured to: perform an uncontrolled handover process when the WiMAX base station is the source serving base station of the terminal that initiates the handover, and carry the source service base station and the terminal in a context response message (Context_RPpt) sent to the target base station.
- Context_RPpt context response message
- the source serving base station may be negotiated with the terminal by using a basic capability response type-length-value (SBC-RSP TLV) field and a registration response type-length-value (REG-RSP TLV) field in the context response message.
- the obtained capability parameter by using the basic capability request type-length-value (SBC-REQ TLV) field and the registration request type-length-value (REG-REQ TLV) field in the context response message, carries the terminal's own capability parameter,
- the capability parameters include a basic capability (SBC) parameter and a registration capability (REG) parameter.
- the second uncontrolled handover processing module is configured to: perform uncontrolled handover processing when the WiMAX base station belongs to the target base station of the terminal, and after receiving the context response message sent by the source serving base station, according to the capability parameter of the target base station Negotiate with the capability of the terminal's own capability parameters, and notify the terminal of the information about the capability parameters obtained through negotiation.
- the intersection of the capability parameter of the target base station and the capability parameter of the terminal is used as a capability parameter negotiated, and the capability parameter negotiated between the terminal and the target base station is negotiated with the terminal and the source serving base station.
- the capability parameter with different capability parameters is used as the capability parameter to be updated, and the capability parameter to be updated is sent to the terminal through a ranging response message (RNG-RSP).
- RNG-RSP ranging response message
- the terminal updates the capability that can be enabled after accessing the target base station according to the capability parameter that needs to be updated.
- the WiMAX base station supporting the terminal capability negotiation is provided by the embodiment, where the WiMAX base station includes a first uncontrolled switching processing module and a second uncontrolled switching processing module, where: the first uncontrolled switching processing module is configured.
- the method is: performing an uncontrolled handover process when the WiMAX base station is the source serving base station of the terminal that initiates the handover, and sending a context response message to the target base station, where the context response message carries the capability parameter negotiated by the source serving base station and the terminal, and the terminal's own
- the second uncontrolled handover processing module is configured to: perform uncontrolled handover processing when the WiMAX base station belongs to the target base station of the terminal, and after receiving the context response message sent by the source serving base station, according to the target base station
- the capability parameter is negotiated with the capability parameter of the terminal, and the information of the capability parameter obtained by the negotiation is notified to the terminal, thereby avoiding narrowing of the terminal capability after the uncontrolled handover.
- the first uncontrolled handover processing module carries the source service through a basic capability response type-length-value (SBC-RSP TLV) field and a registration response type-length-value (REG-RSP TLV) field in the context response message.
- the capability parameter negotiated by the base station and the terminal carries the terminal by using a basic capability request type-length-value (SBC-REQ TLV) field and a registration request type-length-value (REG-REQ TLV) field in the context response message.
- the own capability parameter, the capability parameter includes a basic capability (SBC) parameter and a registration capability (REG) parameter.
- the second uncontrolled handover processing module is configured to perform negotiation according to the capability parameter of the terminal and the capability parameter of the target base station in the following manner: the target base station negotiates the intersection of the capability parameter of the target base station and the capability parameter of the terminal itself. The ability parameters obtained.
- the second uncontrolled handover processing module is configured to notify the terminal of the information about the new capability parameter negotiated in the following manner: the capability parameter negotiated between the terminal and the target base station, and the negotiation between the terminal and the source serving base station
- the capability parameter with different capability parameters is used as the capability parameter to be updated, and the capability parameter to be updated is sent to the terminal through the ranging response message.
- the method of the foregoing embodiment is not limited to the R6 interface switching process described in the article (the switching message is sent through the R6 interface), and can also be applied to other uncontrolled switching scenarios such as the R4 interface or the R8 interface.
- the difference is that in the R6 interface switching process, the message between the target base station and the source serving base station is forwarded by one access gateway, and two access gateways are required to be forwarded in the R4 handover procedure, and in the R8 handover procedure, the target base station and The source service base station can directly send and receive messages.
- the message transmission and processing of the source serving base station and the target base station are the same.
- the present invention prevents the terminal from being narrowed by the fact that the terminal itself has the ability to be unenhanced because it is not enabled until the terminal performs uncontrolled switching between different base stations.
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Description
一种终端能力协商的方法、 ***和 WiMAX基站
技术领域 本发明涉及***移动通信***的无线通讯网络领域, 尤其涉及在终端 接入全球互通微波存取 ( Worldwide Interoperability for Microwave Access, WiMAX ) 无线基站之后, 随着终端的不断移动, 在不同的基站间来回切换 的过程中保持终端使用的能力的方法、 ***和 WiMAX基站。
背景技术
现代的无线通讯领域逐步由小容量带宽的无线网络逐渐向大容量带宽的 无线网络演进, 由固定式网络向支持移动性的网络演进。 移动性在保持终端 的通信畅通不掉话以及数据的可延续性和完整性起着至关重要的作用。
WiMAX是一项基于美国电气和电子工程师协会(Institute of Electrical and Electronics Engineers, IEEE ) 802.16标准的宽带无线接入技术, 为了提 高频谱资源利用率以适应各类宽带多媒体应用, 釆用了代表未来通信技术发 展方向的正交频分复用( Orthogonal Frequency Division Multiplexing, OFDM ) /正交频分多址接入 ( Orthogonal Frequency Division Multiple Access , OFDMA ) 、 自适应天线***( Adaptive Antenna System, AAS ) 、 多输入多 输出 (Multiple-Input Multiple-Out-put, MIMO )等先进技术, 能提供面向互 联网的高速连接, 数据传输距离最远可达 50km。 WiMAX还具有服务质量 ( Quality of Service, QoS )保障、 传输速率高和业务丰富多样等优点。 随着 技术标准的发展, WiMAX将逐步实现宽带业务的移动化。 参考图 1 , 在 WiMAX无线网络中, 整个***的架构主要由 3部分组成: 移动终端 (Mobile Station , MS) , 接入网(Service Network , ASN)和核心网 (Connectivity Service Network. CSN), 而 ASN又由目标基站 S和接入网关 ( ASN-Gateway, ASN-GW )组成, MS与基站(Base Station, BS ) 间通信 的接口为 Rl口, BS与 ASN-GW通信的接口为 R6接口。 众所周知, 在无线网络中无线信号受到来自于地形的变化, 地表建筑遮
挡以及恶劣天气等情况影响, 在一个区域或者一段时间内会有波动。 伴随着 这些波动就会导致终端在移动过程中需要判断是否需要切换到新的基站而获 取更好的服务。 当信号波动在一个有明显趋势且较为平滑的过程中时, 终端 和基站会釆用受控切换的方式来进行目标基站的重选, 受控切换( Controlled Handover )过程效果较好且基站和终端行为都有预先准备, 所以成功率较高。 但是当信号波动较为剧烈, 可能会导致终端的行为会有很多不确定性且伴随 突发性, 通常在这种情况下基站已经没有时间做预切换准备, 只能立即以最 快速度允许终端在新的目标基站接入网络。 这个过程叫做非受控切换 (Uncontrolled Handover) , 举例列出如下几种场景但并不限于以下场景: 1)、 当终端进行移动时, 终端发现当前服务基站的信号突然非常弱, 甚 至已经无法与当前服务基站保持通信, 但是终端通过扫描等机制发现当前位 置可以收到其他信号较强的基站信号, 则终端直接在新发现的信号较强的基 站进行网络重入并试图在该新基站获得服务;
2), 当终端进行移动时, 终端发现当前服务基站的信号变弱, 但是终端 通过扫描等机制发现当前位置可以收到其他信号稍强的基站信号。 终端尝试 受控切换到其中某些站点, 但是在这个过程进行中, 源服务基站信号逐渐衰 弱到无法保持与终端通信的程度, 同时终端又发现了信号更优的新基站, 由 于此时终端已经与源服务基站失去联系无法再通知源服务基站, 所以终端转 而直接在新发现的信号更优的基站进行网络重入并试图在该新基站获得服 务。 现有的一次成功的非受控切换过程如图 2所示, 可以看出, 在终端从一 个基站下的空口移到另一个基站下的空口, 基站的能力参数, 业务流参数和 媒体访问控制 (Media Access Control, MAC )层信息都有可能发生变化。 参 见图 2中第 4步, NWG协议里规定在 Context Rpt消息中, 只允许携带一套 终端与源服务基站协商后的能力参数。 但是 NWG协议并没有规定要求携带 终端自身的基本能力请求 (SBC-REQ)和注册请求 (REG-REQ)中的能力参数内 容。 因此终端非受控切换到目标基站后, 由于目标基站的能力可能与源服务 基站的能力不相同, 需要对终端和目标基站的能力进行重新协商, 但是终端 自身的能力并没有通过 R6/R4接口通知目标基站, 只携带了终端与源服务基
站协商的结果, 所以目标基站不能做到完全与终端能力进行能力协商, 而只 能取目标基站、 源服务基站和终端的能力的交集。 在终端的移动过程中, 终端可使能的能力逐步减少, 导致自身具备能力 的逐步窄化。 例如一个具备混合自动重送请求 ( Hybrid Automatic Repeat Request, HARQ )能力的终端, 在不使能 HARQ能力的源服务基站初始接入 后, 业务流上关闭了 HARQ的能力。 然而目标基站 HARQ能力是使能的。 当终端到目标基站非受控重入后, 由于目标基站只能对源服务基站与终端能 力协商的结果进行一次协商,所以目标基站协商出来的结果 HARQ功能依然 是不使能,所以终端无法在已经支持 HARQ能力的目标基站开启使用 HARQ 的功能来传输数据, 无法更好地保证传输质量。
发明内容 本发明要解决的技术问题是提供一种终端能力协商的方法及***, 可避 免终端因非受控切换导致能力被窄化。 为了解决上述问题, 本发明提供了一种终端能力协商的方法, 该方法包 括: 终端在全球互通微波存取 ( WiMAX )基站之间进行非受控切换的过程 中, 源服务基站向目标基站发送上下文响应消息, 所述上下文响应消息携带 所述源服务基站与所述终端协商得到的能力参数以及所述终端自己的能力参 数; 以及 所述目标基站收到所述上下文响应消息后, 根据其中的所述终端自己的 能力参数和本目标基站的能力参数做能力的协商, 并将协商得到的新的能力 参数的信息通知所述终端, 从而避免非受控切换后终端能力被窄化。 所述能力参数包括基本能力(SBC)参数和注册能力 (REG)参数,该源服务 基站是通过该上下文响应消息中的基本能力响应类型-长度-值 (SBC-RSP TLV)字段和注册响应类型-长度-值 (REG-RSP TLV)字段携带该源服务基站与 该终端协商得到的能力参数,通过该上下文响应消息中的基本能力请求类型-
长度-值 (SBC-REQ TLV)字段和注册请求类型-长度-值 (REG-REQ TLV)字段 携带该终端自己的能力参数。 所述目标基站根据所述终端自己的能力参数和本目标基站的能力参数做 能力的协商的步骤包括: 所述目标基站将该目标基站的能力参数和该终端自 己的能力参数的交集作为协商得到的能力参数。 将协商得到的新的能力参数的信息通知该终端的步骤包括: 所述目标基 站将该终端与该目标基站协商得到的能力参数中, 与该终端与源服务基站协 商得到的能力参数不同的能力参数作为需更新的能力参数, 将所述需更新的 能力参数通过测距响应消息发送给该终端。 将所述需更新的能力参数通过测距响应消息发送给该终端的步骤之后, 所述方法还包括: 该终端收到测距响应消息后, 根据其中携带的需更新的能力参数更新自 己接入目标基站后可以使能的能力。
本发明提供的支持终端能力协商的***, 包括 WiMAX基站和终端, 所 述 WiMAX基站包括第一非受控切换处理模块和第二非受控切换处理模块, 其中:
所述第一非受控切换处理模块设置为: 在所属 WiMAX基站作为发起切 换的终端的源服务基站时进行非受控切换的处理, 向目标基站发送上下文响 应消息, 所述上下文响应消息携带该源服务基站与该终端协商得到的能力参 数以及该终端自己的能力参数;
所述第二非受控切换处理模块设置为: 在所属 WiMAX基站作为该终端 的目标基站时进行非受控切换的处理, 在收到源服务基站发送的上下文响应 消息后,根据该目标基站的能力参数和该终端自己的能力参数做能力的协商, 并将协商得到的能力参数的信息通知该终端, 从而避免非受控切换后终端能力被窄化。 所述第一非受控切换处理模块是通过该上下文响应消息中的基本能力响
应类型-长度-值 (SBC-RSP TLV)字段和注册响应类型-长度-值 (REG-RSP TLV) 字段携带该源服务基站与该终端协商得到的能力参数, 通过该上下文响应消 息中的基本能力请求类型-长度-值 (SBC-REQ TLV)字段和注册请求类型-长 度-值 (REG-REQ TLV)字段携带该终端自己的能力参数, 所述能力参数包括 基本能力(SBC)参数和注册能力 (REG)参数。
所述第二非受控切换处理模块是设置为按如下方式根据该终端自己的能 力参数和本目标基站的能力参数做能力的协商: 所述目标基站将该目标基站 的能力参数和该终端自己的能力参数的交集作为协商得到的能力参数。
所述第二非受控切换处理模块是设置为按如下方式将协商得到的新的能 力参数的信息通知该终端: 将该终端与该目标基站协商得到的能力参数中, 与该终端与源服务基站协商得到的能力参数不同的能力参数作为需更新的能 力参数, 将所述需更新的能力参数通过测距响应消息发送给该终端。 终端设置为: 收到测距响应消息后, 根据其中携带的需更新的能力参数 更新自己接入目标基站后可以使能的能力。
为了解决上述问题, 本发明还提供了一种支持终端能力协商的全球互通 微波存取(WiMAX )基站, 所述 WiMAX基站包括第一非受控切换处理模 块和第二非受控切换处理模块, 其中: 所述第一非受控切换处理模块设置为: 在所属 WiMAX基站作为发起切 换的终端的源服务基站时进行非受控切换的处理, 向目标基站发送上下文响 应消息, 所述上下文响应消息携带所述源服务基站与所述终端协商得到的能 力参数以及所述终端自己的能力参数; 所述第二非受控切换处理模块设置为: 在所属 WiMAX基站作为该终端 的目标基站时进行非受控切换的处理, 在收到源服务基站发送的上下文响应 消息后,根据该目标基站的能力参数和该终端自己的能力参数做能力的协商, 并将协商得到的能力参数的信息通知所述终端, 从而避免非受控切换后终端能力被窄化。
所述第一非受控切换处理模块是通过该上下文响应消息中的基本能力响 应类型-长度-值 (SBC-RSP TLV)字段和注册响应类型-长度-值 (REG-RSP TLV) 字段携带该源服务基站与该终端协商得到的能力参数, 通过该上下文响应消 息中的基本能力请求类型-长度-值 (SBC-REQ TLV)字段和注册请求类型-长 度-值 (REG-REQ TLV)字段携带该终端自己的能力参数, 所述能力参数包括 基本能力(SBC)参数和注册能力 (REG)参数。
所述第二非受控切换处理模块是设置为按如下方式根据所述终端自己的 能力参数和本目标基站的能力参数做能力的协商: 所述目标基站将所述目标 基站的能力参数和所述终端自己的能力参数的交集作为协商得到的能力参 数。 所述第二非受控切换处理模块是设置为按如下方式将协商得到的新的能 力参数的信息通知所述终端: 将所述终端与该目标基站协商得到的能力参数 中, 与该终端与源服务基站协商得到的能力参数不同的能力参数作为需更新 的能力参数, 将所述需更新的能力参数通过测距响应消息发送给所述终端。
上述实施方案防止了终端随着移动的过程, 在不同基站间进行非受控切 换后, 导致终端原本自身具备的能力因为始终得不到使能而被窄化的危险。
附图概述 图 1是 WiMAX无线网络架构的示意图; 图 2是现有的一次成功的非受控切换过程的流程图, 图中 R6 DP Reg Proc表示 R6数据隧道登记建立过程; 图 3是本发明实施例非受控切换过程的流程图。
本发明的较佳实施方式 下面结合附图对本发明的具体实施例进行详细说明。 终端在源服务基站初始接入成功, 在接入流程中进行基本能力协商(SS
Basic Capabilities , SBC )以及 REG能力的协商, 以及业务流的建立。 之后, 本实施例终端在 WiMAX基站之间进行非受控切换的过程如图 3所示, 主要 包括以下步骤: 步骤 301: 终端向目标基站发起测距请求消息 (RNG-REQ); 步骤 302: 目标基站收到测距请求消息 (RNG-REQ), 向该请求消息中指 定的源服务基站发送上下文请求消息 (Context— Req), 索取源侧 MAC上下文 信息 (MAC Context); 步骤 303: 源服务基站收到 Context— Req消息后, 将两套能力参数, 即 源服务基站与该终端协商得到的能力参数和该终端自己的能力参数, 携带在 发送给目标基站的上下文响应消息 (Context— Rpt); 消息中, 源服务基站与该终端协商得到的能力参数封装在基本能力响应 类型-长度-值 (SBC-RSP TLV)字段和注册响应类型-长度-值 (REG-RSP TLV) 字段中,该终端自己的能力参数封装在基本能力请求类型-长度-值 (SBC-REQ TLV)字段和注册请求类型-长度-值 (REG-REQ TLV)字段中。 其中 TLV是用 类型,长度,值 (Type, Length, Value) 表示参数的一种格式或者说可选变长字 段。 步骤 304: 目标基站收到上下文响应消息后解析出其中的两套能力参数, 根据该目标基站的能力参数和该终端自己的能力参数做能力的协商, 按照该 协商得到的能力更新业务流信息并建立 R6通道; 协商时, 是将该目标基站的能力参数和该终端自己的能力参数的交集作 为协商得到的能力。 如果协商得到的能力不支持, 目标基站需要关闭在业务 流中使用的相应能力。 步骤 305: 目标基站将该终端与目标基站协商得到的能力参数中, 与该 终端与源服务基站协商得到的能力参数不同的能力参数作为需更新的能力参 数, 携带在向该终端发送测距响应消息 (RNG-RSP ) 中; 需更新的能力参数同样携带在 RNG-RSP中以 SBC-RSP TLV, REG-RSP TLV中。
步骤 306: 该终端收到 RNG-RSP后, 根据 RNG-RSP中携带的需更新的 能力参数来更新自己接入目标基站后可以使能的能力。 终端更新自己接入目标基站后可以使能的能力后, 会自动地更新与之能 力关联的业务流信息。 上述实施例的受控切换过程,通过 Context— Rpt向目标基站传递 MAC上 下文时, 携带两套参数, 一套是源服务基站与终端能力协商的结果, 一套是 终端自己的能力。 从而使得目标基站可以根据终端的能力和目标基站的能力 进行协商, 可以避免终端的能力被窄化。 除了在 Context— Rpt消息中增加一 套参数, 以及目标基站根据本目标基站和终端的能力参数进行协商外, 在流 程方面与现有流程是一致的。
相应地, 本实施例提供的支持终端能力协商的***包括 WiMAX基站和 终端, WiMAX基站包括第一非受控切换处理模块和第二非受控切换处理模 块, 其中: 第一非受控切换处理模块设置为: 在所属 WiMAX基站作为发起切换的 终端的源服务基站时进行非受控切换的处理, 在向目标基站发送的上下文响 应消息 (Context— Rpt)中, 携带该源服务基站与该终端协商得到的能力参数以 及该终端自己的能力参数。 具体地, 可以通过该上下文响应消息中的基本能力响应类型-长度-值 (SBC-RSP TLV)字段和注册响应类型-长度-值 (REG-RSP TLV)字段携带该源 服务基站与该终端协商得到的能力参数, 通过该上下文响应消息中的基本能 力请求类型-长度-值(SBC-REQ TLV)字段和注册请求类型-长度-值 (REG-REQ TLV)字段携带该终端自己的能力参数, 所述能力参数包括基本能 力 (SBC)参数和注册能力 (REG)参数。 第二非受控切换处理模块设置为: 在所属 WiMAX基站作为该终端的目 标基站时进行非受控切换的处理, 在收到源服务基站发送的上下文响应消息 后, 根据该目标基站的能力参数和该终端自己的能力参数做能力的协商, 并 将协商得到的能力参数的信息通知该终端。
具体地, 将该目标基站的能力参数和该终端自己的能力参数的交集作为 协商得到的能力参数, 并将该终端与该目标基站协商得到的能力参数中与该 终端与源服务基站协商得到的能力参数不同的能力参数作为需更新的能力参 数, 将所述需更新的能力参数通过测距响应消息 (RNG-RSP)发送给该终端。 该终端收到测距响应消息后, 根据其中携带的需更新的能力参数更新自 己接入目标基站后可以使能的能力。
相应的, 本实施例提供的一种支持终端能力协商的 WiMAX 基站, WiMAX基站包括第一非受控切换处理模块和第二非受控切换处理模块, 其 中: 第一非受控切换处理模块设置为: 在所属 WiMAX基站作为发起切换的 终端的源服务基站时进行非受控切换的处理, 向目标基站发送上下文响应消 息, 上下文响应消息携带源服务基站与终端协商得到的能力参数以及终端自 己的能力参数; 第二非受控切换处理模块设置为: 在所属 WiMAX基站作为该终端的目 标基站时进行非受控切换的处理, 在收到源服务基站发送的上下文响应消息 后, 根据该目标基站的能力参数和该终端自己的能力参数做能力的协商, 并 将协商得到的能力参数的信息通知终端 , 从而避免非受控切换后终端能力被窄化。 第一非受控切换处理模块是通过该上下文响应消息中的基本能力响应类 型-长度-值 (SBC-RSP TLV)字段和注册响应类型-长度-值 (REG-RSP TLV)字 段携带该源服务基站与该终端协商得到的能力参数, 通过该上下文响应消息 中的基本能力请求类型-长度-值 (SBC-REQ TLV)字段和注册请求类型-长度- 值 (REG-REQ TLV)字段携带该终端自己的能力参数, 所述能力参数包括基本 能力 (SBC)参数和注册能力 (REG)参数。
第二非受控切换处理模块是设置为按如下方式根据终端自己的能力参数 和本目标基站的能力参数做能力的协商: 目标基站将目标基站的能力参数和 终端自己的能力参数的交集作为协商得到的能力参数。
第二非受控切换处理模块是设置为按如下方式将协商得到的新的能力参 数的信息通知终端: 将终端与该目标基站协商得到的能力参数中, 与该终端 与源服务基站协商得到的能力参数不同的能力参数作为需更新的能力参数, 将需更新的能力参数通过测距响应消息发送给终端。
上述实施例方法不限于文章中描述的 R6接口切换流程(指切换消息通 过 R6接口发送) 中, 还可应用于其他 R4接口或 R8接口等非受控切换场景 中。 差别仅在于在 R6接口切换流程中, 目标基站和源服务基站之间的消息 经过一个接入网关转发, 在 R4切换流程中需要两个接入网关转发, 而在 R8 切换流程中, 目标基站和源服务基站之间可以直接收发消息。 源服务基站和 目标基站的消息发送和处理均是相同的。
工业实用性 本发明防止了终端随着移动在不同基站间进行非受控切换后, 导致终端 原本自身具备的能力因为始终得不到使能而被窄化的危险。
Claims
1、 一种终端能力协商的方法, 该方法包括: 终端在全球互通微波存取 ( WiMAX )基站之间进行非受控切换的过程 中, 源服务基站向目标基站发送上下文响应消息, 所述上下文响应消息携带 所述源服务基站与所述终端协商得到的能力参数以及所述终端自己的能力参 数; 以及 所述目标基站收到所述上下文响应消息后, 根据其中的所述终端自己的 能力参数和本目标基站的能力参数做能力的协商, 并将协商得到的新的能力 参数的信息通知所述终端, 从而避免非受控切换后终端能力被窄化。
2、 如权利要求 1所述的方法, 其中: 所述能力参数包括基本能力(SBC)参数和注册能力 (REG)参数,所述源服 务基站是通过所述上下文响应消息中的基本能力响应类型-长度-值 (SBC-RSP TLV)字段和注册响应类型-长度-值 (REG-RSP TLV)字段携带所述源服务基站 与所述终端协商得到的能力参数, 通过所述上下文响应消息中的基本能力请 求类型-长度-值 (SBC-REQ TLV)字段和注册请求类型-长度-值 (REG-REQ TLV)字段携带所述终端自己的能力参数。
3、 如权利要求 1所述的方法, 其中: 所述目标基站根据所述终端自己的能力参数和本目标基站的能力参数做 能力的协商的步骤包括: 所述目标基站将所述目标基站的能力参数和所述终 端自己的能力参数的交集作为协商得到的能力参数。
4、 如权利要求 1或 2或 3所述的方法, 其中: 将协商得到的新的能力参数的信息通知所述终端的步骤包括: 所述目标 基站将所述终端与所述目标基站协商得到的能力参数中, 与所述终端与源服
务基站协商得到的能力参数不同的能力参数作为需更新的能力参数, 将所述 需更新的能力参数通过测距响应消息发送给该终端。
5、如权利要求 4所述的方法, 其中, 将所述需更新的能力参数通过测距 响应消息发送给该终端的步骤之后, 所述方法还包括:
所述终端收到测距响应消息后, 根据其中携带的需更新的能力参数更新 自己接入目标基站后可以使能的能力。
6、 一种支持终端能力协商的***, 包括全球互通微波存取( WiMAX ) 基站和终端, 所述 WiMAX基站包括第一非受控切换处理模块和第二非受控 切换处理模块, 其中:
所述第一非受控切换处理模块设置为: 在所属 WiMAX基站作为发起切 换的终端的源服务基站时进行非受控切换的处理, 向目标基站发送上下文响 应消息, 所述上下文响应消息携带所述源服务基站与所述终端协商得到的能 力参数以及所述终端自己的能力参数;
所述第二非受控切换处理模块设置为: 在所属 WiMAX基站作为该终端 的目标基站时进行非受控切换的处理, 在收到源服务基站发送的上下文响应 消息后,根据该目标基站的能力参数和该终端自己的能力参数做能力的协商, 并将协商得到的能力参数的信息通知所述终端, 从而避免非受控切换后终端能力被窄化。
7、 如权利要求 6所述的***, 其中:
所述第一非受控切换处理模块是通过所述上下文响应消息中的基本能力 响应类型-长度-值 (SBC-RSP TLV)字段和注册响应类型-长度-值 (REG-RSP TLV)字段携带该源服务基站与所述终端协商得到的能力参数,通过该上下文 响应消息中的基本能力请求类型-长度-值 (SBC-REQ TLV)字段和注册请求类 型-长度-值 (REG-REQ TLV)字段携带该终端自己的能力参数, 所述能力参数 包括基本能力(SBC)参数和注册能力 (REG)参数。
8、 如权利要求 6所述的***, 其中:
所述第二非受控切换处理模块是设置为按如下方式根据所述终端自己的 能力参数和本目标基站的能力参数做能力的协商: 所述目标基站将所述目标 基站的能力参数和所述终端自己的能力参数的交集作为协商得到的能力参
9、 如权利要求 6或 7或 8所述的***, 其中:
所述第二非受控切换处理模块是设置为按如下方式将协商得到的新的能 力参数的信息通知所述终端: 将所述终端与该目标基站协商得到的能力参数 中, 与该终端与源服务基站协商得到的能力参数不同的能力参数作为需更新 10 的能力参数, 将所述需更新的能力参数通过测距响应消息发送给所述终端。
10、 如权利要求 9所述的***, 其中: 所述终端设置为: 收到所述测距响应消息后, 根据其中携带的需更新的 能力参数更新自己接入目标基站后可以使能的能力。
11、 一种支持终端能力协商的全球互通微波存取(WiMAX )基站, 所 15 述 WiMAX基站包括第一非受控切换处理模块和第二非受控切换处理模块,
所所述述第第一一非非受受控控切切换换处处理理模模块块设设置置为为:: 在在所所属属 WWiiMMAAXX基基站站作作为为发发起起切切 换换的的终终端端的的源源服服务务基基站站时时进进行行非非受受控控切切换换的的处处理理,, 向向目目标标基基站站发发送送上上下下文文响响 应应消消息息,, 所所述述上上下下文文响响应应消消息息携携带带所所述述源源服服务务基基站站与与所所述述终终端端协协商商得得到到的的能能 2200 力力参参数数以以及及所所述述终终端端自自己己的的能能力力参参数数;; 所所述述第第二二非非受受控控切切换换处处理理模模块块设设置置为为:: 在在所所属属 WWiiMMAAXX基基站站作作为为该该终终端端 的的目目标标基基站站时时进进行行非非受受控控切切换换的的处处理理,, 在在收收到到源源服服务务基基站站发发送送的的上上下下文文响响应应 消消息息后后,,根根据据该该目目标标基基站站的的能能力力参参数数和和该该终终端端自自己己的的能能力力参参数数做做能能力力的的协协商商,, 并并将将协协商商得得到到的的能能力力参参数数的的信信息息通通知知所所述述终终端端,,
12、 如权利要求 11所述的 WiMAX基站, 其中: 所述第一非受控切换处理模块是通过该上下文响应消息中的基本能力响 应类型-长度-值 (SBC-RSP TLV)字段和注册响应类型-长度-值 (REG-RSP TLV) 字段携带该源服务基站与该终端协商得到的能力参数, 通过该上下文响应消 息中的基本能力请求类型-长度-值 (SBC-REQ TLV)字段和注册请求类型-长 度-值 (REG-REQ TLV)字段携带该终端自己的能力参数, 所述能力参数包括 基本能力(SBC)参数和注册能力 (REG)参数。
13、 如权利要求 11所述的 WiMAX基站, 其中:
所述第二非受控切换处理模块是设置为按如下方式根据所述终端自己的 能力参数和本目标基站的能力参数做能力的协商: 所述目标基站将所述目标 基站的能力参数和所述终端自己的能力参数的交集作为协商得到的能力参 数。
14、 如权利要求 11或 12或 13所述的 WiMAX基站, 其中: 所述第二非受控切换处理模块是设置为按如下方式将协商得到的新的能 力参数的信息通知所述终端: 将所述终端与该目标基站协商得到的能力参数 中, 与该终端与源服务基站协商得到的能力参数不同的能力参数作为需更新 的能力参数, 将所述需更新的能力参数通过测距响应消息发送给所述终端。
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