Auto-negotiation A interface link processing method and processing device

文档序号:1759278 发布日期:2019-11-29 浏览:19次 中文

阅读说明:本技术 自协商a接口链路处理方法及装置 (Auto-negotiation A interface link processing method and processing device ) 是由 李彪 刘春� 侯健 于 2018-05-21 设计创作,主要内容包括:本发明实施例提供的一种自协商A接口链路处理方法及装置,通过获取发送端到接收端的传输底层报文,对所述传输底层报文进行分析获得报文标签,当确定所述报文标签中包含第一判断参数时,匹配ATM传输方式,并根据ATM传输方式匹配MTP协议,向所述接收端侧的网关设备发送第一协商参数,以使接收端侧的网关设备根据所述第一协商参数对接收端侧A接口完成参数协商,同时检测发送端侧A接口的链路状态的心跳信号,当确定发送端侧A接口的链路状态正常时,激活发送端到接收端间的链路,达到链路快速接入,提供用户需求。(A kind of auto-negotiation A interface link processing method and processing device provided in an embodiment of the present invention, pass through the transmission bottom message of acquisition transmitting terminal to receiving end, analysis is carried out to the transmission bottom message and obtains message label, when determine in the message label comprising first judge parameter when, match ATM transmission mode, and MTP protocol is matched according to ATM transmission mode, first, which is sent, to the gateway for receiving end side negotiates parameter, so that the gateway for receiving end side negotiates parameter according to described first and completes parameter negotiation to receiving end side A interface, the heartbeat signal for sending the link state of end side A interface is detected simultaneously, when determining that the link state for sending end side A interface is normal, activate transmitting terminal to the link between receiving end, reach link to quickly access, user demand is provided.)

1. a kind of auto-negotiation A interface link processing method characterized by comprising

Transmitting terminal is obtained to the transmission bottom message of receiving end, analysis is carried out to the transmission bottom message and obtains message label;

When determine judge parameter comprising first in the message label when, matching ATM transmission mode, and according to ATM transmission mode MTP protocol is matched, described first judges parameter for path overhead parameter;

First is sent to the gateway for receiving end side and negotiates parameter, so as to receive the gateway of end side according to described the One, which negotiates parameter, completes parameter negotiation to receiving end side A interface;

Detection sends the heartbeat signal of the link state of end side A interface, when the link state for determining transmission end side A interface is normal When, activation transmitting terminal to the link between receiving end.

2. the method according to claim 1, wherein further include:

Parameter, Match IP transmission mode are judged comprising second when determining in the message label, and are matched according to IP transmission mode Stream Control Transmission Protocol negotiates parameter to the gateway request second for receiving end side, negotiates parameter to transmission according to described second End side A interface completes parameter negotiation, and described second judges parameter for address parameter.

3. the method according to claim 1, wherein it is described first negotiation parameter include cic circuit identification code number and Signaling point code number, then complete parameter negotiation to receiving end side A interface, specifically: make the gateway for receiving end side according to electricity Road identification code number and signaling point code number hold consultation to the interface parameters of receiving end side A interface.

4. according to the method described in claim 2, it is characterized in that, the second negotiation parameter includes receiving end side A interface Interface parameters completes parameter negotiation to end side A interface is sent, specifically: it is connect according to the second negotiation parameter to end side A is sent The signaling point code number and interface index of mouth are held consultation.

5. a kind of auto-negotiation A interface link processing unit characterized by comprising

Parsing module, the transmission bottom message for obtaining transmitting terminal to receiving end, analyzes the transmission bottom message Obtain message label;

Configuration module, for when determine judge parameter comprising first in the message label when, matching ATM transmission mode, and root MTP protocol is matched according to ATM transmission mode, described first judges parameter for path overhead parameter;

Negotiation module negotiates parameter for sending first to the gateway for receiving end side, so as to receive the gateway of end side Equipment negotiates parameter according to described first and completes parameter negotiation to receiving end side A interface;

Module is established, for detecting the heartbeat signal for sending the link state of end side A interface, sends end side A interface when determining When link state is normal, activation transmitting terminal to the link between receiving end.

6. device according to claim 5, which is characterized in that the configuration module is also used to: when determining the message mark Parameter, Match IP transmission mode are judged comprising second in label, and Stream Control Transmission Protocol, second judgement are matched according to IP transmission mode Parameter is address parameter;

The negotiation module is also used to negotiate parameter to the gateway request second for receiving end side, according to described second Negotiate parameter and completes parameter negotiation to end side A interface is sent.

7. device according to claim 5, which is characterized in that it is described first negotiation parameter include cic circuit identification code number and Signaling point code number, the negotiation module are specifically used for:

The gateway for receiving end side is set to number the interface to receiving end side A interface according to cic circuit identification code number and signaling point code Parameter is held consultation.

8. device according to claim 6, which is characterized in that the second negotiation parameter includes receiving end side A interface Interface parameters, the negotiation module are specifically used for:

Parameter negotiation is completed to end side A interface is sent, specifically: negotiate parameter to transmission end side A interface according to described second Signaling point code number and interface index are held consultation.

9. a kind of electronic equipment characterized by comprising processor, memory, bus and storage on a memory and can located The computer program run on reason device;

Wherein, the processor, memory complete mutual communication by the bus;

The processor realizes such as method of any of claims 1-4 when executing the computer program.

10. a kind of non-transient computer readable storage medium, which is characterized in that in the non-transient computer readable storage medium It is stored with computer program, such as side of any of claims 1-4 is realized when which is executed by processor Method.

Technical field

The present invention relates to network communication technology field more particularly to a kind of auto-negotiation A interface link processing method and processing devices.

Background technique

Existing mobile communication, GSM (global system for mobile communications Global System for Mobile Communication CS (Circuit Switched circuit commutative field) voice communication mode that group is wanted) is remained as, voice is solved Important way is complained, network optimization department, operator is quickly to solve the problems, such as, introduces GSM femto (Home eNodeB) to this to solve this One problem.Gsm Femto can rapid deployment, convenient and small and exquisite feature can quickly open station using Metropolitan Area Network (MAN).But based on safety Strategy considers that GSM femto accesses gsm not in access BSC (Base Station Controller base station controller) Femto segw+Hgw (security gateway+home gateway), the wireless access control of Lai Jinhang gsm femto introduce one herein New problem:

The gsm system network of current 90% operator, major way in transmission are as follows: ATM (the asynchronous modulus of conversion of A interface Formula), a small amount of is the ip (Internet Protocol, networking telephone mode) of A interface.The base station gsm femto and GSM femto How segw+Hgw, IPization, realize the ATM mode of IP docking operator, and can smoothly dock success, in operator When disposing GSM femto segw+Hgw, become a problem, but also cannot impact to operator's O&M GSM network, So in GSM femto segw+Hgw, it is often necessary to which repeatedly and core net is transmitted in operator and access way is repeatedly begged for By, and the cause because protocol fields or parameter understand differently in docking, cause docking to fail, alerts situation with generating, visitor Family perceived effect is poor.

Summary of the invention

The present invention provides a kind of auto-negotiation A interface link processing method and processing device, for solving in the prior art in GSM family The problem of link docking is easy failure is realized under the scene of front yard base station.

In a first aspect, the embodiment of the present invention provides a kind of auto-negotiation A interface link processing method, comprising:

Transmitting terminal is obtained to the transmission bottom message of receiving end, analysis is carried out to the transmission bottom message and obtains message mark Label;

When determining that matching ATM transmission mode and is transmitted according to ATM when judge parameter comprising first in the message label Mode matches MTP protocol, and described first judges parameter for path overhead parameter;

First is sent to the gateway for receiving end side and negotiates parameter, so as to receive the gateway of end side according to institute It states the first negotiation parameter and parameter negotiation is completed to receiving end side A interface;

Detection sends the heartbeat signal of the link state of end side A interface, when determination is sending the link state of end side A interface just Chang Shi, activation transmitting terminal to the link between receiving end.

Optionally, further includes:

Parameter is judged comprising second when determining in the message label, Match IP transmission mode, and according to IP transmission mode Stream Control Transmission Protocol is matched, negotiates parameter to the gateway request second for receiving end side, negotiates parameter pair according to described second It sends end side A interface and completes parameter negotiation, described second judges parameter for address parameter.

Optionally, the first negotiation parameter includes cic circuit identification code number and signaling point code number, then to receiving end side A Interface completes parameter negotiation, specifically: number the gateway for receiving end side according to cic circuit identification code number and signaling point code It holds consultation to the interface parameters of receiving end side A interface.

Optionally, the second negotiation parameter includes receiving the interface parameters of end side A interface, and to sending, A interface in end side is complete At parameter negotiation, specifically: negotiate parameter to the signaling point code number and interface index for sending end side A interface according to described second It holds consultation.

Second aspect, the embodiment of the present invention provide a kind of auto-negotiation A interface link processing unit, comprising:

Parsing module, the transmission bottom message for obtaining transmitting terminal to receiving end carry out the transmission bottom message Analysis obtains message label;

Configuration module, for when determine in the message label comprising first judge parameter when, matching ATM transmission mode, And MTP protocol is matched according to ATM transmission mode, described first judges parameter for path overhead parameter;

Negotiation module negotiates parameter for sending first to the gateway for receiving end side, so as to receive end side Gateway negotiates parameter according to described first and completes parameter negotiation to receiving end side A interface;

Module is established, for detecting the heartbeat signal for sending the link state of end side A interface, when the determining end side A that sends connects When the link state of mouth is normal, activation transmitting terminal to the link between receiving end.

Optionally, the configuration module, is also used to: judging parameter comprising second when determining in the message label, matches IP transmission mode, and Stream Control Transmission Protocol is matched according to IP transmission mode, described second judges parameter for address parameter;

The negotiation module is also used to negotiate parameter to the gateway request second for receiving end side, according to described Second, which negotiates parameter, completes parameter negotiation to end side A interface is sent.

Optionally, the first negotiation parameter includes cic circuit identification code number and signaling point code number, the negotiation module It is specifically used for:

Number the gateway for receiving end side to receiving end side A interface according to cic circuit identification code number and signaling point code Interface parameters is held consultation.

Optionally, the second negotiation parameter includes receiving the interface parameters of end side A interface, and the negotiation module is specifically used In:

Parameter negotiation is completed to end side A interface is sent, specifically: it is connect according to the second negotiation parameter to end side A is sent The signaling point code number and interface index of mouth are held consultation.

The third aspect, the embodiment of the present invention provide a kind of electronic equipment, comprising: processor, memory, bus and are stored in On memory and the computer program that can run on a processor;

Wherein, the processor, memory complete mutual communication by the bus;

The processor realizes such as above-mentioned method when executing the computer program.

Fourth aspect, the embodiment of the present invention provide a kind of non-transient computer readable storage medium, the non-transient calculating It is stored with computer program on machine readable storage medium storing program for executing, such as above-mentioned method is realized when which is executed by processor.

As shown from the above technical solution, a kind of auto-negotiation A interface link processing method provided in an embodiment of the present invention and dress It sets, by obtaining transmitting terminal to the transmission bottom message of receiving end, analysis is carried out to the transmission bottom message and obtains message mark Label, when determine judge parameter comprising first in the message label when, matching ATM transmission mode, and according to ATM transmission mode With MTP protocol, send first to the gateway for receiving end side and negotiate parameter so that receive the gateway of end side according to Described first, which negotiates parameter, completes parameter negotiation to receiving end side A interface, while detecting the link state for sending end side A interface Heartbeat signal activates transmitting terminal to the link between receiving end, reaches when determining that the link state for sending end side A interface is normal Link quickly accesses, and provides user demand.

Detailed description of the invention

Fig. 1 is the flow diagram for the auto-negotiation A interface link processing method that one embodiment of the invention provides;

Fig. 2 is the flow diagram for the auto-negotiation A interface link processing method that one embodiment of the invention provides;

Fig. 3 is the structural schematic diagram for the auto-negotiation A interface link processing unit that one embodiment of the invention provides;

Fig. 4 is the structural schematic diagram for the electronic equipment that one embodiment of the invention provides.

Specific embodiment

With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below Example is not intended to limit the scope of the invention for illustrating the present invention.

Fig. 1 shows one embodiment of the invention and provides a kind of auto-negotiation A interface link processing method, comprising:

S11, transmitting terminal is obtained to the transmission bottom message of receiving end, analysis is carried out to the transmission bottom message and is reported Literary label;

S12, when determine judge parameter comprising first in the message label when, the asynchronous conversion ATM transmission mode of matching, and Media transmission MTP protocol is matched according to ATM transmission mode;

S13, the first negotiation parameter is sent to the gateway for receiving end side, so as to receive the gateway root of end side Negotiate parameter according to described first and parameter negotiation is completed to receiving end side A interface, described first judges parameter for path overhead parameter;

S14, detection send the heartbeat signal of the link state of end side A interface, when the link shape for determining transmission end side A interface When state is normal, activation transmitting terminal to the link between receiving end.

For step S11- step S14, it should be noted that in embodiments of the present invention, this programme is (complete based on GSM Ball mobile communication system) femto (Home eNodeB) segw+hgw (security gateway-home gateway) realization auto-negotiation A interface link Processing.Using the processing mode that virtual cpu is arranged on segw+hgw, functional module is fictionalized, configuration is formed, negotiates, establishes Process.A interface is defined as the communication interface between network subsystem (NSS) and base station sub-system (BSS).

In embodiments of the present invention, during the intercommunication of terminal, security gateway-home gateway obtains transmitting terminal and arrives The transmission bottom message of receiving end, and parsing is carried out to transmission bottom message and obtains message label.

Security gateway-home gateway judges message label judge whether to have in message label preset a variety of Judge parameter.In embodiments of the present invention, judge that parameter includes overhead parameter, such as preset overhead parameter includes J0 (regenerator section Trace byte), J1 (path trace byte), C2 (signal label byte), J2 (path trace byte), K4 (spare bytes), V5 (channel status and signal label byte).Judge that parameter further includes MAC (physical address), arp (address resolution protocol), vlan (virtual address exchange), IP parameter.

In embodiments of the present invention, first judges that parameter can be the overhead parameters such as J0, J1, C2, J2, K4, V5.At this point, peace Full gateway-home gateway can match ATM transmission mode, and match MTP protocol according to ATM transmission mode.

After matching MTP protocol, know to gateway (security gateway-home gateway) transmitting line for receiving end side Other code number and signaling point code number make the gateway for receiving end side according to cic circuit identification code number and signaling point code number pair The interface parameters for receiving end side A interface is held consultation.

After negotiation, security gateway-home gateway detection sends the heartbeat signal of the link state of end side A interface, works as determination The link state for sending end side A interface has heartbeat signal, when being considered as normal, activation transmitting terminal to the signaling link between receiving end With service surface link.

When security gateway-home gateway detects link state to activate, the state of activation of A interface is operating status.

A kind of auto-negotiation A interface link processing method provided in an embodiment of the present invention, by obtaining transmitting terminal to receiving end Transmission bottom message, to the transmission bottom message carry out analysis obtain message label, wrapped when determining in the message label When judging parameter containing first, ATM transmission mode is matched, and MTP protocol is matched according to ATM transmission mode, to the reception end side Gateway send first negotiate parameter so that receive end side gateway according to it is described first negotiate parameter to receiving end Side A interface completes parameter negotiation, while detecting the heartbeat signal for sending the link state of end side A interface, sends end side A when determining It when the link state of interface is normal, activates transmitting terminal to the link between receiving end, reaches link and quickly access, providing user needs It asks.

Fig. 2 shows one embodiment of the invention to provide a kind of auto-negotiation A interface link processing method, comprising:

S11, transmitting terminal is obtained to the transmission bottom message of receiving end, analysis is carried out to the transmission bottom message and is reported Literary label;

S12, parameter, Match IP transmission mode are judged comprising second when determining in the message label, and transmitted according to IP Mode matches Stream Control Transmission Protocol, and described second judges parameter for address parameter;

S13, negotiate parameter to the gateway request second for receiving end side, negotiate parameter to hair according to described second Sending end side A interface completes parameter negotiation;

S14, detection send the heartbeat signal of the link state of end side A interface, when the link shape for determining transmission end side A interface When state is normal, activation transmitting terminal to the link between receiving end.

For step S21- step S24, it should be noted that in embodiments of the present invention, this programme is (complete based on GSM Ball mobile communication system) femto (Home eNodeB) segw+hgw (security gateway-home gateway) realization auto-negotiation A interface link Processing.Using the processing mode that virtual cpu is arranged on segw+hgw, functional module is fictionalized, configuration is formed, negotiates, establishes Process.A interface is defined as the communication interface between network subsystem (NSS) and base station sub-system (BSS).

In embodiments of the present invention, during the intercommunication of terminal, security gateway-home gateway obtains transmitting terminal and arrives The transmission bottom message of receiving end, and parsing is carried out to transmission bottom message and obtains message label.

Security gateway-home gateway judges message label judge whether to have in message label preset a variety of Judge parameter.In embodiments of the present invention, judge that parameter includes overhead parameter, such as preset overhead parameter include J0, J1, C2, J2,K4,V5.Judge that parameter further includes MAC, arp, vlan, IP parameter.

In embodiments of the present invention, first judges that parameter can be MAC, arp, vlan, IP parameter.At this point, security gateway-family Front yard gateway can Match IP transmission mode, and according to IP transmission mode match Stream Control Transmission Protocol.

After matching Stream Control Transmission Protocol, the interface parameters of end side A interface is received to the gateway request for receiving end side, It is held consultation according to the interface parameters for receiving end side A interface to the signaling point code number and interface index that send end side A interface.

After negotiation, security gateway-home gateway detection sends the heartbeat signal of the link state of end side A interface, works as determination The link state for sending end side A interface has heartbeat signal, when being considered as normal, activation transmitting terminal to the signaling link between receiving end With service surface link.

When security gateway-home gateway detects link state to activate, the state of activation of A interface is operating status.

A kind of auto-negotiation A interface link processing method provided in an embodiment of the present invention, by obtaining transmitting terminal to receiving end Transmission bottom message, to the transmission bottom message carry out analysis obtain message label, wrapped when determining in the message label Parameter, Match IP transmission mode are judged containing second, and Stream Control Transmission Protocol is matched according to IP transmission mode, to the net for receiving end side It closes device request second and negotiates parameter, negotiate parameter according to described second and complete parameter negotiation to end side A interface is sent, and detect The heartbeat signal for sending the link state of end side A interface, when determining that the link state for sending end side A interface is normal, activation hair Sending end reaches link and quickly accesses, provide user demand to the link between receiving end.

Fig. 3 shows a kind of auto-negotiation A interface link processing unit provided in an embodiment of the present invention, including parsing module 31, configuration module 32, negotiation module 33 and module 34 is established, in which:

Parsing module 31, the transmission bottom message for obtaining transmitting terminal to receiving end, to the transmission bottom message into Row analysis obtains message label;

Configuration module 32, for when determine in the message label comprising first judge parameter when, matching the transmission side ATM Formula, and MTP protocol is matched according to ATM transmission mode;

Negotiation module 33 negotiates parameter for sending first to the gateway for receiving end side, so as to receive end side Gateway according to it is described first negotiate parameter to receiving end side A interface complete parameter negotiation;

Module 34 is established, for detecting the heartbeat signal for sending the link state of end side A interface, sends end side A when determining When the link state of interface is normal, activation transmitting terminal to the link between receiving end.

Since described device of the embodiment of the present invention is identical as the principle of above-described embodiment the method, for more detailed Explain that details are not described herein for content.

It should be noted that can be by hardware processor (hardware processor) come real in the embodiment of the present invention Existing related function module.

A kind of auto-negotiation A interface link processing unit provided in an embodiment of the present invention, by obtaining transmitting terminal to receiving end Transmission bottom message, to the transmission bottom message carry out analysis obtain message label, wrapped when determining in the message label When judging parameter containing first, ATM transmission mode is matched, and MTP protocol is matched according to ATM transmission mode, to the reception end side Gateway send first negotiate parameter so that receive end side gateway according to it is described first negotiate parameter to receiving end Side A interface completes parameter negotiation, while detecting the heartbeat signal for sending the link state of end side A interface, sends end side A when determining It when the link state of interface is normal, activates transmitting terminal to the link between receiving end, reaches link and quickly access, providing user needs It asks.

A kind of auto-negotiation A interface link processing unit provided in an embodiment of the present invention, including parsing module, configuration module, Negotiation module and establish module, in which:

Parsing module, the transmission bottom message for obtaining transmitting terminal to receiving end carry out the transmission bottom message Analysis obtains message label;

Configuration module judges parameter, Match IP transmission mode, and root comprising second for working as in the determining message label Stream Control Transmission Protocol is matched according to IP transmission mode;

Negotiation module, for negotiating parameter to the gateway request second for receiving end side, according to second association Quotient's parameter completes parameter negotiation to end side A interface is sent;

Module is established, for detecting the heartbeat signal for sending the link state of end side A interface, when the determining end side A that sends connects When the link state of mouth is normal, activation transmitting terminal to the link between receiving end.

Since described device of the embodiment of the present invention is identical as the principle of above-described embodiment the method, for more detailed Explain that details are not described herein for content.

It should be noted that can be by hardware processor (hardware processor) come real in the embodiment of the present invention Existing related function module.

A kind of auto-negotiation A interface link processing unit provided in an embodiment of the present invention, by obtaining transmitting terminal to receiving end Transmission bottom message, to the transmission bottom message carry out analysis obtain message label, wrapped when determining in the message label Parameter, Match IP transmission mode are judged containing second, and Stream Control Transmission Protocol is matched according to IP transmission mode, to the net for receiving end side It closes device request second and negotiates parameter, negotiate parameter according to described second and complete parameter negotiation to end side A interface is sent, and detect The heartbeat signal for sending the link state of end side A interface, when determining that the link state for sending end side A interface is normal, activation hair Sending end reaches link and quickly accesses, provide user demand to the link between receiving end.

Fig. 4 show the embodiment of the present invention provide a kind of electronic equipment, comprising: processor 41, memory 42, bus 43 and Store the computer program that can be run on a memory and on a processor;

Wherein, the processor, memory complete mutual communication by the bus;

The processor realizes such as above-mentioned method when executing the computer program, for example, obtains transmitting terminal and arrives The transmission bottom message of receiving end carries out analysis to the transmission bottom message and obtains message label, when determining the message mark When judging parameter comprising first in label, ATM transmission mode is matched, and MTP protocol is matched according to ATM transmission mode, Xiang Suoshu connects The gateway of receiving end side sends first and negotiates parameter, so that the gateway for receiving end side negotiates parameter pair according to described first It receives end side A interface and completes parameter negotiation, while detecting the heartbeat signal for sending the link state of end side A interface, sent out when determining When the link state of sending end side A interface is normal, activation transmitting terminal to the link between receiving end.

The embodiment of the present invention provides a kind of non-transient computer readable storage medium, the non-transient computer readable storage It is stored with computer program on medium, such as above-mentioned method is realized when which is executed by processor, for example, obtain It takes transmitting terminal to the transmission bottom message of receiving end, analysis is carried out to the transmission bottom message and obtains message label, works as determination When judging parameter comprising first in the message label, ATM transmission mode is matched, and MTP association is matched according to ATM transmission mode View sends first to the gateway for receiving end side and negotiates parameter, so as to receive the gateway of end side according to described the One, which negotiates parameter, completes parameter negotiation to receiving end side A interface, while detecting the heartbeat letter for sending the link state of end side A interface Number, when determining that the link state for sending end side A interface is normal, activation transmitting terminal to the link between receiving end.

In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments In included certain features rather than other feature, but the combination of the feature of different embodiments mean it is of the invention Within the scope of and form different embodiments.For example, in the following claims, embodiment claimed is appointed Meaning one of can in any combination mode come using.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and ability Field technique personnel can be designed alternative embodiment without departing from the scope of the appended claims.In the claims, Any reference symbol between parentheses should not be configured to limitations on claims.Word "comprising" does not exclude the presence of not Element or step listed in the claims.Word "a" or "an" located in front of the element does not exclude the presence of multiple such Element.The present invention can be by means of including the hardware of several different elements and being come by means of properly programmed computer real It is existing.In the unit claims listing several devices, several in these devices can be through the same hardware branch To embody.The use of word first, second, and third does not indicate any sequence.These words can be explained and be run after fame Claim.

Those of ordinary skill in the art will appreciate that: the above embodiments are only used to illustrate the technical solution of the present invention., and It is non-that it is limited;Although present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art It is understood that it is still possible to modify the technical solutions described in the foregoing embodiments, either to part of or All technical features are equivalently replaced;And these are modified or replaceed, it does not separate the essence of the corresponding technical solution this hair Bright claim limited range.

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