CN102882555A

CN102882555A - Domain access control method, domain searching method and communication apparatus

Info

Publication number: CN102882555A
Application number: CN2012103142274A
Authority: CN
Inventors: 姜彤
Original assignee: Huawei Technologies Co Ltd
Current assignee: Guangzhou Shengyang Information Technology Co., Ltd.
Priority date: 2012-08-30
Filing date: 2012-08-30
Publication date: 2013-01-16
Anticipated expiration: 2032-08-30
Also published as: WO2014032613A1; CN102882555B

Abstract

The invention relates to the communication field and discloses a domain access control method, a domain searching method and a communication apparatus. The domain access control method comprises the following steps that: a domain node receives a domain searching request message, wherein the domain searching request message comprises an identifier of a login node and a domain name identifier of each target domain corresponding to the login node; if the domain name identifier of any target domain included in the domain searching request message and the domain name identifier of the domain where the domain node is located are same, a domain searching response message is un-received before the reaching of the feedback time for feeding back the domain searching response message according to the domain searching request message, and the domain searching request message comprises the identifier of the login node, the domain node feedback domain searches the response message, the domain node receives a domain login request sent by the login node, the login node executes the domain access control to the login node according to the domain login request. The scheme provided by the invention is beneficial to the increment of the rate of adding the login node in the existent domain and the avoidance of the message redundancy in the domain.

Description

Method and the communication equipment that search in the method for territory access control and territory

Technical field

The present invention relates to the communications field, particularly method and the communication equipment of the search of a kind of method of territory access control and territory.

Background technology

Along with the development of intelligence communication technology, communication network, intelligent network are almost omnipresent.Power line communication network carries out a kind of communication network of communication for adopting above-mentioned power line communication technology as information transmitting medium by power line.Each equipment or parts in power line communication network are designated as power line communications apparatus, and it is respectively the node in the communication network.

Power line communication technology is to utilize high-voltage power line (35kV and above), medium voltage power line (10-30kV electric pressure) or low-voltage distribution wire (380/210kV subscribers feeder) to carry out a kind of specific communication mode of communication as information transmitting medium.

Power line communication technology is loaded into the high-frequency signal of carrying information on the power line, to carry out transfer of data by power line, high-frequency signal is separated from power line by the power line modulator/demodulator of special use at receiving terminal, then the high-frequency signal with carrying information is sent to terminal equipment.

Power line communication network logically can be divided into a plurality of territories, each territory in network has respectively a unique domain name sign (Domain name Identifier, be called for short DNI), this DNI is used for this territory of unique identification in this power line communication network.In each territory, each domain node connects respectively by power line, and in each territory, specifying respectively has a domain node as being used for the unified primary domain controller (Domain Master is called for short DM) of coordinating network service in this territory of control.

The mode of operation commonly used in each territory of power line communication technology comprises beacon patterns (being divided into sync beacon pattern, asynchronous beacon patterns) and without beacon patterns in the prior art.In beacon patterns, DM meeting timed sending beacon frame arrives all domain nodes in this territory, comprises following information in beacon frame: the message such as bandwidth, domain name, DNI, safe class, frequency band division demand, territory synchronizing information, mode of operation.In without beacon patterns, DM manages and controls the territory by the in-band management message of layer 3.

In the larger territory of scope, when the part domain node in the territory can't be communicated by letter with DM, DM can refer to one or more beacon agency (Beacon Proxies is called for short BPR), BPR regenerates and broadcasts the R-beacon frame according to the beacon frame of receiving, thereby reaches the effect that enlarges the territory coverage.

With this territory synchronously in carrying out research process of the present invention, the inventor finds to exist at least in the prior art following defective and problem:

According to the prior art scheme, equipment can or initiatively send probe message or beacon request message finds existing network by the drive sweep beacon, and selects suitable network to carry out corresponding networking flow process to add network.

But the present invention program based on the network architecture under, node after powering on, and do not know current around distribution situation and the mode of operation in existing territory, if the territory that exists works in without beacon patterns, node can't be found by scanning for beacon the existence in existing territory; On the other hand, the purpose territory that possible node expectation adds exists, and works in beacon patterns, but current register node is positioned at the edge in purpose territory, the register node present position has exceeded the coverage of DM in this territory or BPR, therefore register node can't be received the message that DM or BPR send.

Summary of the invention

The embodiment of the invention the first purpose is to provide the method for the first territory access control, use this technical scheme and be conducive to improve the probability that register node is added to existing territory, be conducive to avoid the situation that thereby newly-built territory causes domain name to conflict owing to can't find already present purpose territory, be conducive to avoid message redundancy in the territory, reduce the signaling consumption in the territory.

The embodiment of the invention the second purpose is to provide the method for the second territory access control, use this technical scheme and be conducive to improve the probability that register node is added to existing territory, be conducive to avoid the situation that thereby newly-built territory causes domain name to conflict owing to can't find already present purpose territory, be conducive to avoid message redundancy in the territory, reduce the signaling consumption in the territory.

The embodiment of the invention the 3rd purpose is to provide the method for the third territory access control, use this technical scheme and be conducive to improve the probability that register node is added to existing territory, be conducive to avoid the situation that thereby newly-built territory causes domain name to conflict owing to can't find already present purpose territory, be conducive to avoid message redundancy in the territory, reduce the signaling consumption in the territory.

The embodiment of the invention the 4th purpose is to provide the method for a kind of territory search, use this technical scheme and be conducive to improve the probability that register node is added to existing territory, thereby be conducive to avoid the situation that newly-built territory causes domain name to conflict owing to can't find already present purpose territory.

The embodiment of the invention the 5th purpose is to provide the first communication equipment, use this technical scheme and be conducive to improve the probability that register node is added to existing territory, be conducive to avoid the situation that thereby newly-built territory causes domain name to conflict owing to can't find already present purpose territory, be conducive to avoid message redundancy in the territory, reduce the signaling consumption in the territory.

The embodiment of the invention the 6th purpose is to provide the second communication equipment, use this technical scheme and be conducive to improve the probability that register node is added to existing territory, be conducive to avoid the situation that thereby newly-built territory causes domain name to conflict owing to can't find already present purpose territory, be conducive to avoid message redundancy in the territory, reduce the signaling consumption in the territory.

The embodiment of the invention the 7th purpose is to provide the third communication equipment, use this technical scheme and be conducive to improve the probability that register node is added to existing territory, be conducive to avoid the situation that thereby newly-built territory causes domain name to conflict owing to can't find already present purpose territory, be conducive to avoid message redundancy in the territory, reduce the signaling consumption in the territory.

The embodiment of the invention the 8th purpose is to provide the 4th kind of communication equipment, use this technical scheme and be conducive to improve the probability that register node is added to existing territory, thereby be conducive to avoid the situation that newly-built territory causes domain name to conflict owing to can't find already present purpose territory.

The embodiment of the invention the 5th purpose is to provide the 5th kind of communication equipment, use this technical scheme and be conducive to improve the probability that register node is added to existing territory, be conducive to avoid the situation that thereby newly-built territory causes domain name to conflict owing to can't find already present purpose territory, be conducive to avoid message redundancy in the territory, reduce the signaling consumption in the territory.

The embodiment of the invention the 6th purpose is to provide the 6th kind of communication equipment, use this technical scheme and be conducive to improve the probability that register node is added to existing territory, be conducive to avoid the situation that thereby newly-built territory causes domain name to conflict owing to can't find already present purpose territory, be conducive to avoid message redundancy in the territory, reduce the signaling consumption in the territory.

The embodiment of the invention the 7th purpose is to provide the 7th kind of communication equipment, use this technical scheme and be conducive to improve the probability that register node is added to existing territory, be conducive to avoid the situation that thereby newly-built territory causes domain name to conflict owing to can't find already present purpose territory, be conducive to avoid message redundancy in the territory, reduce the signaling consumption in the territory.

The method of the first territory access control that the embodiment of the invention provides comprises:

The domain node acceptance domain is searched request message, and the request message inclusion information is searched in described territory: the domain name sign of each aiming field that the sign of register node and described register node are corresponding;

If identical that the domain name of the arbitrary described aiming field that comprises in the request message identifies searched in the domain name in territory, described domain node place sign and described territory,

And, before the feedback of searching request message feedback field search response message according to described territory arrives constantly, do not receive territory search response message, the sign that request message comprises described register node is searched in described territory, then:

Described domain node feeds back described territory and searches response message;

Described domain node receives the described territory registration request that described register node is sent,

Described domain node is that described register node is carried out the territory access control according to described territory registration request.

Alternatively, described domain node feeds back described territory and searches response message specifically in the mode of broadcast transmission.

Alternatively, described domain node is that described register node is carried out the territory access control according to described territory registration request, specifically:

If described domain node is: primary domain controller, then described domain node is according to actual conditions and the described territory registration request in described domain node and territory, described domain node place, judge whether to allow register node to join territory, described domain node place, and to described register node feedback judged result;

Otherwise described domain node is transmitted described territory registration request to the primary domain controller in territory, described domain node place,

According to described territory registration request, and judge whether to allow register node to join territory, described domain node place for described primary domain controller, and to described register node feedback judged result.

Alternatively, in step: the domain node acceptance domain also comprises after searching request message:

If all not identical that the domain name of all described aiming fields that comprise in the request message identifies searched in the domain name in territory, described domain node place sign and described territory,

Perhaps, before the feedback of searching request message feedback field search response message according to described territory arrived constantly, have and receive territory search response message: the sign that response message comprises described register node was searched in described territory, then:

Described domain node is ignored described territory and is searched request message.

Alternatively, described feedback is specially constantly:

After receiving that the request of searching of described territory disappears, wait for the moment of random time after blanking time,

Described random time is spaced apart: described domain node calculates a time interval random value that obtains after receiving that request message is searched in described territory.

Alternatively, described domain node is: described primary domain controller,

Described broadcast domain is searched the feedback moment of response message, is specially:

After receiving that the request of searching of described territory disappears, the moment behind the wait zero-time interval.

The method of the second territory access control that the embodiment of the invention provides comprises:

The domain node acceptance domain is searched request message, and described domain node is: primary domain controller or beacon agency,

The request message inclusion information is searched in described territory: the domain name sign of each aiming field that the sign of register node and described register node are corresponding;

And before next delivery time of beacon frame arrived, do not receive beacon frame: described beacon frame comprised the sign of described register node, and did not receive territory search response message: the sign that response message comprises described register node is searched in described territory, then:

Described domain node sends beacon frame, comprises the sign of described register node in described beacon frame;

Alternatively, in described beacon frame, comprise the sign of described register node, specifically:

In described beacon frame, comprise the register node additional field, in described register node additional field, comprise: the sign of described register node.

Alternatively, described domain node specifically in the mode of broadcasting, sends described beacon frame.

Otherwise, described domain node is transmitted described territory registration request to the primary domain controller in territory, described domain node place, according to described territory registration request, and judge whether to allow register node to join territory, described domain node place for described primary domain controller, and to described register node feedback judged result.

Perhaps, before next delivery time of beacon frame arrived, have and receive territory search response message: the sign that response message comprises described register node was searched in described territory, and perhaps have and receive beacon frame: described beacon frame comprises the sign of described register node, then:

The method of the 3rd territory access control that the embodiment of the invention provides comprises:

The domain node acceptance domain is searched request message, and described domain node is: other the arbitrary domain nodes except primary domain controller and beacon agency,

And, before the feedback of searching request message feedback field search response message according to described territory arrives constantly, do not receive beacon frame: described beacon frame comprises the sign of described register node, and do not receive territory search response message: the sign that response message comprises described register node is searched in described territory, then:

Described domain node is transmitted described territory registration request to the primary domain controller in territory, described domain node place, for described primary domain controller according to described territory registration request, and judge whether to allow register node to join territory, described domain node place, and to described register node feedback judged result.

Perhaps, before the feedback of searching request message feedback field search response message according to described territory arrives constantly, have and receive beacon frame: described beacon frame comprises the sign of described register node, perhaps have and receive territory search response message: the sign that response message comprises described register node is searched in described territory, then:

Alternatively, described feedback is specially constantly:

Alternatively, described random time interval is greater than the beacon frame transmission time interval of the primary domain controller in territory, described domain node place.

Alternatively, described random time interval is also greater than arbitrary beacon agency's in territory, described domain node place beacon frame transmission time interval.

The method that search in a kind of territory that the embodiment of the invention provides comprises:

Whether the register node monitoring receives beacon frame;

If do not receive beacon frame in the monitoring periods of described beacon frame: described beacon frame comprises the domain name sign of arbitrary aiming field of described register node, then:

Request message is searched in described register node broadcast transmission territory, searches the sign that request message comprises described register node in described territory;

Whether described register node monitoring receives territory search response message,

If searching response message, described territory comprises: the domain name sign of arbitrary aiming field of described register node, then:

Described register node is searched response message according to described territory, determines the final purpose territory,

Described register node is searched response message according to the described territory of the domain name sign that comprises described final purpose territory, send the territory registration request, the destination address of described territory registration request is the transmitting terminal address that response message is searched in described territory, comprises the request that adds described final purpose territory in the registration request of described territory.

Alternatively, described register node is searched response message according to described territory, determines the final purpose territory, specifically:

The domain name sign that comprises in the response message is searched in the described territory that described register node will be received first, is defined as the domain name sign in described final purpose territory.

Described register node receives at least two described territories and searches response message in the response monitoring periods is searched in predetermined territory,

Described register node wherein arbitrary described territory is searched the domain name sign that response message comprises, and is defined as the domain name sign in described final purpose territory.

Alternatively, in step: when whether described register node monitoring receives that response message is searched in the territory, also comprise:

Whether described register node monitoring receives beacon frame;

In step: described register node is searched response message according to described territory, determine before the final purpose territory,

If receive beacon frame: described beacon frame comprises the domain name sign of arbitrary aiming field of described register node, then:

According to described beacon frame, determine described final purpose territory;

Described register node is according to the described beacon frame of the domain name sign that comprises described final purpose territory, send the territory registration request, the destination address of described territory registration request is: the transmitting terminal address of described beacon frame comprises the request that adds described final purpose territory in the registration request of described territory.

Described register node stops monitoring and whether receives beacon frame and beacon frame.

The first communication equipment that the embodiment of the invention provides comprises:

Receiving element is used for receipt message;

Transmitting element is used for sending message;

CPU is connected with described receiving element, transmitting element respectively, is used for:

After described receiving element receives that request message is searched in territory, if identical that the domain name of the arbitrary described aiming field comprised in request message identifies searched in the domain name in territory, described communication equipment place sign and described territory, and, before the feedback of searching request message feedback field search response message according to described territory arrives constantly, do not receive territory search response message: the sign that response message comprises described register node is searched in described territory, control the described territory of described transmitting element feedback and search response message

And, after described receiving element is received described registration request, for the register node of sending described registration request is carried out the territory access control.

Alternatively, CPU is carried out the territory access control for the register node of sending described registration request after described receiving element is received described registration request, be specially:

Described CPU is after described receiving element is received described registration request, actual conditions and described territory registration request according to described equipment and territory, described equipment place, judge whether that allowing to send described register node joins territory, described equipment place, and to described register node feedback judged result.

Described CPU is controlled described transmitting element and is transmitted described territory registration request to the primary domain controller in territory, described equipment place after described receiving element is received described registration request,

Judge whether to allow register node to join territory, described equipment place for described primary domain controller according to described territory registration request, and to actual conditions and the described territory registration request of described register node feedback judged result according to described equipment and territory, described equipment place, judge whether that allowing to send described register node joins territory, described equipment place, and to described register node feedback judged result.

The second communication equipment that the embodiment of the invention provides comprises:

Receiving element is used for receipt message;

Transmitting element is used for sending message;

After described receiving element receives that request message is searched in the territory, if identical that the domain name of the arbitrary described aiming field that comprises in the request message identifies searched in the domain name in territory, described communication equipment place sign and described territory, and, before next delivery time of beacon frame arrives, do not receive beacon frame: described beacon frame comprises the sign of described register node, and do not receive territory search response message: the sign that response message comprises described register node is searched in described territory, control described transmitting element and send beacon frame, in described beacon frame, comprise the sign of described register node;

And, after described receiving element is received registration request, according to described registration request, for the register node of sending described registration request is carried out the territory access control.

Alternatively, described CPU after described receiving element is received registration request, is used for according to described registration request, carries out the territory access control for the register node of sending described registration request, is specially:

Described CPU, actual conditions and described territory registration request according to described domain node and territory, described domain node place, judge whether to allow register node to join territory, described domain node place, and to the described transmitting element of control to described register node feedback judged result.

The described transmitting element of described central processing unit controls is transmitted described territory registration request to the primary domain controller in territory, described equipment place,

The third communication equipment that the embodiment of the invention provides comprises:

Receiving element is used for receipt message;

Transmitting element is used for sending message;

After described receiving element receives that request message is searched in described territory, if identical that the domain name of the arbitrary described aiming field that comprises in the request message identifies searched in the domain name in territory, described communication equipment place sign and described territory, and, before the feedback of searching request message feedback field search response message according to described territory arrives constantly, do not receive beacon frame: described beacon frame comprises the sign of described register node, and do not receive territory search response message: the sign that response message comprises described register node is searched in described territory, then control described transmitting element and feed back described territory search response message

Alternatively, described CPU is used for being used for according to described registration request after described receiving element is received registration request, carries out the territory access control for the register node of sending described registration request, is specially:

After described receiving element was received registration request, described CPU was used for controlling described transmitting element and transmits described territory registration request to the primary domain controller in territory, described equipment place,

The four-way letter equipment that the embodiment of the invention provides comprises:

Receiving element is used for receipt message;

Transmitting element is used for sending message;

Do not receiving beacon frame in the monitoring periods of described receiving element at described beacon frame: described beacon frame comprises domain name when sign of arbitrary aiming field of described register node, control described transmitting element broadcast transmission territory and search request message, search the sign that request message comprises described register node in described territory;

And, receive territory search response message at described receiving element, described territory is searched response message and is comprised: when the domain name of arbitrary aiming field of described register node identifies, search response message according to described territory, determine the final purpose territory, and be used for controlling described transmitting element according to the described territory search response message transmission territory registration request of the domain name sign that comprises described final purpose territory, the destination address of described territory registration request is the transmitting terminal address that response message is searched in described territory, comprises the request that adds described final purpose territory in the registration request of described territory.

The five-way letter equipment that the embodiment of the invention provides comprises:

Receiver is used for receipt message;

Transmitter is used for sending message;

Central processing unit is connected with described receiver, transmitter respectively, is used for:

After described receiver receives that request message is searched in the territory, if identical that the domain name of the arbitrary described aiming field that comprises in the request message identifies searched in the domain name in territory, described communication equipment place sign and described territory, and, before next delivery time of beacon frame arrives, do not receive beacon frame: described beacon frame comprises the sign of described register node, and do not receive territory search response message: the sign that response message comprises described register node is searched in described territory, control described transmitter and send beacon frame, in described beacon frame, comprise the sign of described register node;

And, after described receiver is received registration request, according to described registration request, for the register node of sending described registration request is carried out the territory access control.

Alternatively, described central processing unit after described receiver is received registration request, is used for according to described registration request, carries out the territory access control for the register node of sending described registration request, is specially:

Described central processing unit, actual conditions and described territory registration request according to described domain node and territory, described domain node place, judge whether to allow register node to join territory, described domain node place, and to the described transmitter of control to described register node feedback judged result.

Perhaps, described central processing unit after described receiver is received registration request, is used for according to described registration request, carries out the territory access control for the register node of sending described registration request, is specially:

Described central processing unit is controlled described transmitter and is transmitted described territory registration request to the primary domain controller in territory, described equipment place,

The 6th communication equipment that the embodiment of the invention provides comprises:

Receiver is used for receipt message;

Transmitter is used for sending message;

After described receiver receives that request message is searched in described territory, if identical that the domain name of the arbitrary described aiming field that comprises in the request message identifies searched in the domain name in territory, described communication equipment place sign and described territory, and, before the feedback of searching request message feedback field search response message according to described territory arrives constantly, do not receive beacon frame: described beacon frame comprises the sign of described register node, and do not receive territory search response message: the sign that response message comprises described register node is searched in described territory, then control described transmitter and feed back described territory search response message

Alternatively, described central processing unit is used for being used for according to described registration request after described receiver is received registration request, carries out the territory access control for the register node of sending described registration request, is specially:

After described receiver was received registration request, described central processing unit was used for controlling described transmitter and transmits described territory registration request to the primary domain controller in territory, described equipment place,

The 7th communication equipment that the embodiment of the invention provides comprises:

Receiver is used for receipt message;

Transmitter is used for sending message;

Do not receiving beacon frame in the monitoring periods of described receiver at described beacon frame: described beacon frame comprises domain name when sign of arbitrary aiming field of described register node, control described transmitter broadcast transmission territory and search request message, search the sign that request message comprises described register node in described territory;

And, receive territory search response message at described receiver, described territory is searched response message and is comprised: when the domain name of arbitrary aiming field of described register node identifies, search response message according to described territory, determine the final purpose territory, and be used for controlling described transmitter according to the described territory search response message transmission territory registration request of the domain name sign that comprises described final purpose territory, the destination address of described territory registration request is the transmitting terminal address that response message is searched in described territory, comprises the request that adds described final purpose territory in the registration request of described territory.

Therefore, use the present embodiment technical scheme, for the arbitrary domain node in arbitrary territory, it is after request message is searched in the territory of receiving register node, after if territory, this domain node place is one of aiming field of register node, and after receiving that request message is searched in this territory, before the feedback of territory search response message arrives constantly, do not receive the territory search response of the sign of the register node in the IncFlds search request message, domain node just can be broadcasted feedback field and be searched response message, knows near the purpose territory that can add this register node and sends to whom the territory registration request so that register node can be searched response message according to this.

Directly send for the technical scheme of territory registration request to DM or BPR according to beacon frame with respect to each register node in the prior art, the present embodiment technical scheme has the following advantages:

First: adopt the present embodiment technical scheme, even in following situation: the purpose territory of register node exists, but current register node is positioned at the edge in purpose territory, the register node present position has exceeded the coverage of DM in this territory or BPR, and register node can't be received the message that DM or BPR send.In this case, as long as near other domain node of the existence of register node is used the present embodiment technical scheme, this register node still can join in this existing territory.

And in the prior art, each register node only initiatively or the passive beacon frame that sends according to DM or BPR add the territory, in case register node exceeds the coverage of DM or BPR, even this register node position has the territory of beacon, the DNI of one of them aiming field that DNI that should existing territory and equipment are interior is identical, but DM or the relative current device of BPR in the existing territory are hidden (being that the information that DM or BPR send can't arrive this equipment), register node can't be received any message (containing beacon frame) of DM or BPR, therefore register node can't join existing territory, this moment, register node was take arbitrary DNI of this register node aiming field as the newly-built territory of the DNI in this newly-built territory, cause in a communication network, having the identical territory of two or more DNI, affect the normal operation in each territory on the communication network.

By above-mentioned comparison, as seen adopt the present embodiment technical scheme, be conducive to improve register node and be added to probability in the existing territory, avoid causing the situation of domain name conflict owing to can't find already present purpose territory and newly-built territory.

The method of the territory access control that the present embodiment provides stands good and connects in set up the territory for arbitrary communication equipment (calling register node in the following text) that does not add any one territory in the communication network, so that this register node joins arbitrary territory of communication network, so that this communication equipment can carry out network communicating function by this territory.

Second: domain node is after receiving the territory search request message that register node is sent, after judging the aiming field of territory, this domain node place as this register node, and before searching response message, feedback field do not receive that other domain nodes are to the territory search response message of this territory search request, just feedback field is searched response message, can avoid in the network each domain node to search request message for territory, a territory responds respectively, be conducive to avoid internet message redundant, reduce network signaling overhead.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

The schematic flow sheet of the method for a kind of territory access control that Fig. 1 provides for the embodiment of the invention 1;

The schematic flow sheet of the method for a kind of territory access control that Fig. 2 provides for the embodiment of the invention 2;

The schematic flow sheet of the method for a kind of territory access control that Fig. 3 provides for the embodiment of the invention 3;

The schematic flow sheet of the method for a kind of territory access control that Fig. 4 provides for the embodiment of the invention 4;

The schematic flow sheet of the method for a kind of territory access control that Fig. 5 provides for the embodiment of the invention 5;

The schematic flow sheet of the method for a kind of territory access control that Fig. 6 provides for the embodiment of the invention 6;

The schematic flow sheet of the method that Fig. 7 searches for a kind of territory that the embodiment of the invention 7 provides;

The schematic flow sheet of the method that Fig. 8 searches for a kind of territory that the embodiment of the invention 8 provides;

The structural representation of a kind of communication equipment that Fig. 9 provides for the embodiment of the invention 9;

The structural representation of a kind of communication equipment that Figure 10 provides for the embodiment of the invention 10;

The structural representation of a kind of communication equipment that Figure 11 provides for the embodiment of the invention 11;

The structural representation of a kind of communication equipment that Figure 12 provides for the embodiment of the invention 12;

The structural representation of a kind of communication equipment that Figure 13 provides for the embodiment of the invention 13;

The structural representation of a kind of communication equipment that Figure 14 provides for the embodiment of the invention 14;

The structural representation of a kind of communication equipment that Figure 15 provides for the embodiment of the invention 15;

The structural representation of a kind of communication equipment that Figure 16 provides for the embodiment of the invention 16.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.

Embodiment 1:

The present embodiment provides the method for a kind of territory access control, the method is applicable to set up the territory for arbitrary communication equipment (calling register node in the following text) that does not add any one territory in the communication network and connects, so that this register node joins arbitrary territory of communication network, thereby so that this communication equipment can be realized network communicating function.Wherein this communication network can but be not limited to beacon network.

For convenience of description, in the present embodiment, the current communication equipment that does not add any territory in any communication network is designated as: register node is designated as the communication equipment that adds the territory in the communication network: domain node.

Referring to shown in Figure 1, arbitrary register node that a kind of arbitrary domain node that has added in the territory that the present embodiment provides is does not join domain is set up the method for territory access control, and it mainly comprises following process step:

Step 101: the domain node acceptance domain is searched request message.

In the present embodiment, arbitrary territory is searched request message and is comprised: the domain name sign of sending each aiming field corresponding to the sign of the register node of searching request message in this territory and this register node.

More detailed content can but be not limited to referring to shown in the embodiment 2,3.

Step 102: if DNI identical of the arbitrary aiming field that comprises in the request message searched in the DNI in territory, domain node place and territory, and, before the feedback of territory search response message arrives constantly, do not receive territory search response message: the sign that response message comprises register node is searched in the territory, and then execution in step 103; Otherwise can but be not limited to execution in step 106.

If: DNI identical of the arbitrary aiming field that comprises in the request message searched in the DNI in territory, domain node place and territory, and, do not receive search response message in territory constantly in following feedback, the sign (namely sending the sign that the register node of request message is searched in this territory) that request message does not comprise register node, then equal execution in step 103 are searched in the territory of perhaps receiving; Otherwise, can carry out according to step 106 (also can according to prior art or other predetermined other flow processs of strategy execution).

Above-mentioned feedback is specially constantly: this domain node is searched the feedback moment that the request message feedback field is searched response message according to the territory.

Step 103: the domain node feedback field is searched response message.

Request message is searched in the territory that this domain node is received according to step 101, mode feedback field with broadcasting is searched response message, for the register node of opposite end and the information that can determine according to this territory search response message this domain node information and territory, this domain node place, send the territory access request and search response message according to the territory to this domain node.

Search in this territory in response message can but be not limited to inclusion information: the sign that the register node that comprises in the request message is searched in territory corresponding to response message is searched in the DNI in this domain node address, territory, this domain node place, the territory synchronizing information in territory, this domain node place and this territory.

Step 104: domain node receives the territory registration request that register node is sent.

After domain node sent territory search response message, register node can be searched response message according to the territory and be sent the territory registration request to domain node, comprises the request that joins this territory, domain node place in the registration request of territory.

Concrete flow process can but be not limited to carry out according to prior art.

Step 105: domain node is that register node is carried out the territory access control according to the territory registration request.

In the present embodiment, can according to the actual conditions of this domain node in the territory, place, be that register node is carried out the territory access control according to the territory registration request.

Such as: this domain node is DM, and then domain node judges whether to allow register node to join territory, domain node place according to actual conditions and the territory registration request in domain node and territory, domain node place, and to register node feedback judged result.

This domain node is not DM, and domain node is transmitted the territory registration request to the DM in territory, domain node place, below carrying out for DM:

According to the territory registration request and judge whether to allow register node to join territory, domain node place, and feed back judged result as via node to register node by this domain node.

Step 106: domain node is ignored this territory and is searched request message.

Domain node is ignored this territory and is searched request message, request message is not searched in the territory and is done any further processing.

In the present embodiment, if when being judged to be in step 102 is no, can carry out according to this step, also can be according to prior art or other predetermined other flow processs of strategy execution.

But can further avoid internet message redundant according to the processing of this steps flow chart, reduce network signaling overhead.

Therefore, adopt the present embodiment technical scheme, for the arbitrary domain node in arbitrary territory, it is after request message is searched in the territory of receiving register node, after if territory, this domain node place is one of aiming field of register node, and after receiving that request message is searched in this territory, before the feedback of territory search response message arrives constantly, do not receive the territory search response of the sign of the register node in the IncFlds search request message, domain node just can be broadcasted feedback field and be searched response message, knows near the purpose territory that can add this register node and sends to whom the territory registration request so that register node can be searched response message according to this.

Embodiment 2:

The present embodiment is further described in detail the implementation of embodiment 1.

Referring to shown in Figure 2, arbitrary register node that a kind of arbitrary domain node that has added in the territory that the present embodiment provides is does not join domain is set up the method for territory access control, and it mainly comprises following process step:

Step 201: the domain node acceptance domain is searched request message.

When register node added the territory at current needs, this register node was at first determined the current purpose territory that can add, and sent to whom the territory registration request (namely sending the path of territory registration request) in this adding purpose territory.

As one of implementation of embodiment, this register node can when start power on, initiatively send this territory and search request message; Also can be after powering in start, register node can't successfully add the territory in the monitoring of carrying out beacon frame according to beacon frame, does not perhaps listen to after the beacon frame, sends to be somebody's turn to do and the search request message.

In the present embodiment, register node is in order to determine the current purpose territory that can add, and sends to whom the territory registration request in this addings purpose territory, and register node externally sends territory search request message in the mode of broadcasting.In this territory search request message, include: the DNI of the sign of this register node and each aiming field of register node.

Wherein, the sign of this register node can but be not limited to: when this register node is dispatched from the factory, by producer's device name default, that be used for the define equipment identity in register node (equipment), the sign of this register node can but be not limited to EUI-64(64-bit Extended Unique Identifier, the unique identification of 64 bit expanded) address.

Each aiming field corresponding to register node is: be predefined on this register node each territory that this register node can add.The aiming field of the scheduled justice of arbitrary register node can for one also can be for a plurality of.Each aiming field passes through respectively the DNI unique identification of each aiming field.

The DNI of each aiming field that register node is corresponding can but be not limited to: by the user by user interface corresponding to this register node (User Interfcae is called for short UI) in this equipment, the DNI of each aiming field that this default register node is corresponding.

Wherein, above-mentioned register node is externally sent the territory and is searched the transmission of request message and be specially and adopt the mode of broadcasting to send.

After any one register node is sent territory search request message, but this register node communication range is interior, the current arbitrary domain node that has added the arbitrary territory of communication network all may be received this territory search request message.

For arbitrary domain node of receiving territory search request message, according to the function of this domain node in territory, this domain node place, this domain node can be the DM in the territory, domain node place or BPR or common domain node (being other arbitrary domain nodes except DM and BPR in the territory, domain node place).

Below to receive that the workflow of arbitrary domain node of searching request message in the territory as example, is described in detail the present embodiment.

Step 202: domain node is judged: whether whether the DNI's of the arbitrary aiming field that comprises in the territory search request message is identical with the DNI in this territory, domain node place.

Domain node is after receiving that request message is searched in the territory, and relatively whether the DNI's of arbitrary aiming field of comprising of the DNI in territory, this domain node place and the current territory search request message of receiving is identical.

Step 203: if identical, then execution in step 204; Otherwise execution in step 111.

If the DNI in territory, this domain node place is identical with the DNI of the aiming field that the current territory search request message of receiving comprises, then execution in step 204; If it is all not identical that the DNI of all aiming fields that request message comprises is searched in the DNI in territory, this domain node place and current territory of receiving, then judge: territory, this domain node place is not the purpose territory of this register node, redirect execution in step 111.

Step 204: domain node is further determined, after request message is searched in the territory of receiving step 201, this domain node is searched the request message broadcast domain according to the territory and is searched before the feedback of response message arrives constantly, whether received that the territory searches response message, and the sign of the register node that comprises in the territory search request message of receiving in this territory sign of searching the register node in response message and the step 201 is identical.

Determining that territory, domain node place is on the basis in one of purpose territory of this register node, before this domain node execution in step 206, domain node is further determined, the feedback of searching request message broadcast domain search response message according to the territory at this domain node arrives constantly, and whether this domain node has is received the territory search response message with following characteristics:

The sign of the register node that comprises in the territory search request message of receiving in the sign of searching the register node that comprises in response message in this territory and the step 201 is identical.

Search response message if receive the territory with above-mentioned feature, then jump to step 111, ignore the territory and search request message, this is ignored and comprises: do not search the request message feedback field according to this territory and search response message;

Search response message if receive the territory with above-mentioned feature, determine that then other domain nodes (can be DM or BPR or ordinary node) are for the search of the territory in the step 201 request message feedback field search response message.

Step 205: do not have above-mentioned territory search response message, then further execution in step 206 if receive; If received that having above-mentioned territory searches response message, redirect execution in step 111.

Step 206: domain node broadcasting feedback field is searched response message.

This domain node is searched request message according to current territory of receiving, sends the territory in the mode of broadcasting and searches response message, all can receive this territory search response message for any domain node in register node and this territory or other territories.

Search inclusion information in the response message in this territory: the sign that the register node that comprises in the request message is searched in territory corresponding to response message is searched in the DNI in this domain node address, territory, this domain node place, the territory synchronizing information in territory, this domain node place and this territory.

If the current domain node that sends territory search response message is domain node a, territory, the current place of this domain node a is territory A, and it is register node b that register node corresponding to response message searched in this territory.Then:

Register node b is after receiving that response message is searched in this territory, the DNI that register node b searches the territory A in the response message with the territory is defined as the DNI in the purpose territory that the current reality of register node b can add, and register node b is synchronous with this territory A according to " synchronizing information in territory ", register node b sends the territory registration request according to domain node a address to domain node a, comprises the request that request adds territory A in this territory registration request.

A node of response message is searched in any this territory of receiving of except domain node a and register node b other, then this node can be searched according to this territory the sign of the register node b that comprises in the response message, determining has currently had other domain nodes that request message is searched in the territory of register node b to have made response, this domain node can be ignored the territory search request message that register node b sends, and the territory that need not to send for register node b is searched request message and fed back any response.

Step 207: domain node receives the territory registration request that register node is sent.

After domain node sent territory search response message, in the register node side, register node was searched response message according to the territory and is determined the current purpose territory that adds of this register node, and the routing information corresponding to purpose territory that can add.

Register node can be synchronous according to territory synchronizing information and this territory that the territory is sought in the response message, and seek the transmitting terminal address (being the domain node address of transmitting terminal) of response message as the destination address of the territory registration request that sends with this territory, send the territory registration request to domain node, in this territory registration request, comprise the solicited message that request adds this territory, domain node place.

Particularly, register node can but be not limited to directly search response message according to the territory of receiving the earliest, response message is searched in this territory of receiving the earliest, be designated as ND_Probe.rsp ₀, establish ND_Probe.rsp ₀Message is sent by domain node a, and territory, domain node a place is territory A, and register node is according to ND_Probe.rsp ₀Territory synchronizing information in the message is synchronized among the A of territory, and sends the territory registration request to domain node a, comprises the solicited message that request adds territory A in this territory registration request.

In addition, this register node can also but be not limited to adopt following technical scheme:

Register node receive send the territory request of searching after, in ' in the monitoring territory of receiving search response message, be located at the monitoring time interval T ', register node is received N territory search response message, is respectively in predetermined monitoring time interval T:

ND_Probe.rsp ₁, this territory is searched response message and is sent by domain node a, and territory, domain node a place is territory A;

ND_Probe.rsp ₂, this territory is searched response message and is sent by domain node b, and territory, domain node b place is territory A;

ND_Probe.rsp ₃, this territory is searched response message and is sent by domain node c, and territory, domain node c place is territory C;

ND_Probe.rsp _i, this territory is searched response message and is sent by domain node i, and territory, domain node i place is territory I;

ND_Probe.rsp _NThis territory is searched response message and is sent by domain node n, territory, domain node n place is territory N, register node is in the monitoring time interval T ' at the expiration after, search response message according to all territories of receiving, determine territory A, C, I ... link field node (domain node a, b, c, the i in the purpose territory that N is purpose territory that this register node can add, can add ... n).Register node is according to predetermined strategy, from a plurality of purpose territory A, C, I that add ... choose one of them purpose territory that finally will add as this register node (being designated as the final purpose territory) among the N, the territory synchronizing information that register node is searched in the response message according to territory corresponding to this final purpose territory is synchronized in this final purpose territory, and send this territory registration request to domain node corresponding to final purpose territory, in this territory registration request, comprise the solicited message that request adds this territory, domain node place.

Step 208: if domain node is: DM then processes according to step 209, otherwise processes according to step 110.

If this domain node is DM, then continue to process according to step 209, if this domain node is the node of non-DM, then process according to step 110.

Step 209: domain node sends registration confirmation message according to the territory registration request of receiving to register node, and indicates whether to allow register node is joined territory, domain node place.

If this domain node is DM, then domain node is according to the actual conditions in this domain node and territory, place, according to described territory registration request, judge whether to allow register node to join in this territory, if allow, domain node is forwarded to register node with registration confirmation message, and can be able to be included as the information such as node address that register node is distributed in the registration confirmation message; If do not allow, the registration feedback message that domain node will be refused registration feeds back to register node, so that register node is according to predetermined registration policy, constantly resubmit registration request in next registration, perhaps after repeatedly submitting registration request to, carry out the registration request of other aiming fields and process, perhaps newly-built territory.

This step can but be not limited to process according to prior art.

Step 110: domain node is transmitted the territory registration request to the DM in the territory, domain node place, so that DM according to described territory registration request, judges whether to allow register node to join in this territory.

If this domain node is the domain node of non-DM, then domain node is after receiving this territory registration request, this territory registration request is transmitted to DM(in this territory when domain node directly is connected with DM), perhaps by other via nodes in this territory be transmitted in this territory DM(when domain node by other via nodes when being connected with DM), so that DM is according to the actual conditions in this DM and territory, place, according to described territory registration request, judge whether to allow register node to join among the A of this territory, if allow, DM by above-mentioned domain node as the information forward relay, registration confirmation message is forwarded to register node, and can be able to be included as the information such as node address that register node is distributed in the registration confirmation message; If do not allow, DM by above-mentioned domain node as the information forward relay, the registration feedback message of refusal registration is fed back to register node, so that register node is according to predetermined registration policy, constantly resubmit registration request in next registration, perhaps after repeatedly submitting registration request to, carry out the registration request of other aiming fields and process, perhaps newly-built territory.。Ordinary node also will be forwarded to register node with the registration confirmation message that DM processes after sending again after having transmitted this registration request.

Step 211: domain node is ignored this territory and is searched request message, request message is not searched in the territory and is done any further processing.

After the domain node acceptance domain is searched request message, the arbitrary of following two kinds of situations appears, and this domain node is all ignored the current field search and is searched request message, and externally feedback field is not searched response message:

If it is all not identical with the DNI in territory, this domain node place that situation 1 receives that the DNI of all aiming fields of this register node that comprises in the request message is searched in the territory;

The DNI of one of them aiming field of this register node that comprises in situation 2, the territory search request message is identical with the DNI in territory, this domain node place, but this domain node is receiving that this domain node after request message is searched in this territory searches request message broadcast domain and search the feedback of response message and have before constantly arriving and receive that comprising the territory of searching the sign of the register node in the request message with this territory searches response message according to this territory.

Therefore, adopt the present embodiment technical scheme, for the arbitrary domain node in arbitrary territory, it is after request message is searched in the territory of receiving register node, after if territory, this domain node place is one of aiming field of register node, and after receiving that request message is searched in this territory, this domain node is searched the request message broadcast domain according to the territory and is searched before the feedback of response message arrives constantly, the sign of the register node in the territory search response message of not receiving territory search response message or receiving is different from the sign that the register node in the request message is searched in the territory, domain node just can be broadcasted feedback field and be searched response message, knows near the purpose territory that can add this register node and sends to whom the territory registration request so that register node can be searched response message according to this.

First: adopt the present embodiment technical scheme, even in following situation: the purpose territory of register node exists, but current register node is positioned at the edge in purpose territory, the register node present position has exceeded the coverage of DM in this territory or BPR, and register node can't be received the message that DM or BPR send.

In this case, as long as near other domain node of the existence of register node is used the present embodiment technical scheme, this register node still can join in this existing territory.

Second: for arbitrary domain node in any territory, this domain node is being judged territory, this domain node place not behind the aiming field as this register node after receiving that request message is searched in territory that register node is sent, and domain node is to the response of this territory search request message.

And this domain node determines that the territory, place is in the situation of one of aiming field of this register node after searching request message according to the territory, domain node was searched the feedback of response message before the moment in this domain node feedback field, below the domain node monitoring: whether received that other domain nodes are to the territory search response message of this territory search request, in case receive, then domain node is ignored territory search request message, can feedback field not search response message.Therefore adopt this technical scheme to be conducive to reduce in the communication network each node to the response of the territory login request message of same register node, avoid internet message redundant, reduce network signaling overhead.

Need to prove, in embodiment 1-12, the domain node that feedback field is searched response message is the equipment that possesses the relay forwarding function.

If receiving the territory of register node searches the domain node of request message and does not possess the relay forwarding function, then this domain node is not owing to possessing the relay forwarding function, even it searches response message to the register node feedback field, but it does not possess the function that the territory registration request is transmitted to DM or BPR, can't transmit login request message for register node, therefore do not possess relay forwarding functional domain node after receiving that request message is searched in the territory, directly ignore this territory and search request message.

Embodiment 3:

Referring to shown in Figure 3, the method that arbitrary register node that a kind of arbitrary domain node that has added in the territory that the present embodiment provides is does not join domain is set up the territory access control mainly comprises following:

Step 301: the domain node acceptance domain is searched request message.

The corresponding steps in embodiment 1,2 in like manner.

Step 302: domain node is judged: whether whether the DNI's of the arbitrary aiming field that comprises in the territory search request message is identical with the DNI in this territory, domain node place.

The corresponding steps in embodiment 1,2 in like manner.

Step 303: if identical, then execution in step 304; Otherwise execution in step 311.

Step 304: calculative determination one random time interval.

Domain node determine current territory of receiving search the DNI in DNI and territory, this domain node place of an aiming field of the register node that comprises in the request message identical after, then carry out this step: the random value mathematical algorithm program that this domain node operation prestores, the random value at one time interval is designated as the random time interval with it.So that this random time interval is greater than arbitrary time interval of a predetermined time interval.

At this moment, for each domain node of synchronization, the random time interval that each domain node obtains respectively is different, and each domain node is waited for the random time interval that this domain node is corresponding respectively after receiving territory search request message, do not search response message if still receive the territory of the sign that comprises the register node that sends the current field search request message at the expiration at the random time interval, domain node just broadcast domain is searched response message, therefore it is constantly also relatively different that the feedback on reservation of response message is searched in the territory of each domain node, when arbitrary domain node arrives constantly in the feedback of the territory of this domain node search response message, receive that the territory search response message probability of other domain nodes broadcasting improves greatly; For same domain node difference constantly for, each random time interval that constantly obtains is different.

If the random time of the present embodiment calculative determination is spaced apart T, this T can adopt following functional expression to represent:

T=T0+Random（Boff1，Boff2），

Wherein T0 is predetermined interval time rating,

Random(Boff1, Boff2) for duration Boff1 to the random arbitrary function expression between the duration Boff2.

At the present embodiment, the predetermined time interval T0 that each domain node in arbitrary territory is corresponding is set to identical; The predetermined time interval T0 in each territory is set to identically in can communication network, also can be set to difference.

In addition, for further so that register node directly sends login request message to DM according to the response of the DM in the territory, in the present embodiment, can be for each territory, DM in the territory is after receiving that described territory is searched request message and judged in the message that the DNI of target DNI and this territory is identical, directly feedback field is searched response message, and other domain nodes except DM after execution in step 303, need to continue again to wait for a period of time after wait interval T time rating 0, during this period of time from selecting at random between Boff1 and the Boff2.Perhaps, can also be scheduled to the time that the DM feedback field searches response message to be fixed as T0, and the time that other non-DM domain node feedback field are searched response messages be fixed as T=T0+Random(Boff1, Boff2), specifically be not limited to this.

Step 3051: the timing of random time interval timer begins.

Step 3052: whether the monitoring domain node receives the territory search response message of the sign that comprises the register node that sends the current field search request message.

This domain node is monitored this domain node and whether received the territory search response message with following characteristics: the sign of the register node in this territory search response message is identical with the sign that the register node in the request message is searched in the territory that step 301 is received.

Step 3053: search response message, then redirect execution in step 311 if receive the territory of above-mentioned feature; Otherwise, execution in step 3054.

In case response message is searched in the current territory with above-mentioned feature of receiving, then jumps to step 311, ignores this territory and searches request message, comprises that feedback field is not searched response message; If do not receive, then continue execution in step 3054, determine whether that timing arrives predetermined random time interval T.

Step 3054: whether the timing duration of determining the random time intervalometer arrives the random time interval, if arrive then redirect execution in step 306; Otherwise, return step 3052.

Whether the timing duration of judging the random time intervalometer on this domain node reaches the random time interval T.

If do not arrive, then return step 3052, continue whether this domain node of monitoring receive that other domain nodes send with search response message, and the sign of the register node that comprises in the sign of searching the register node that comprises in response message in this territory and the current territory search request message of receiving is identical;

If arrive, then be defined as: this domain node does not all monitor the territory with above-mentioned feature and searches response message in the random time interval of receiving after request message is searched in the territory, and then execution in step 306.

Step 306: domain node broadcasting feedback field is searched response message.

This step is the step 206 in embodiment 2 steps in like manner.

Step 307: domain node receives the territory registration request that register node is sent.

This step is the step 107 in embodiment 2 steps in like manner.

Step 308: if domain node is: DM then processes according to step 309, otherwise processes according to step 310.

This step is the step 208 in embodiment 2 steps in like manner.

Step 309: domain node sends registration confirmation message according to the territory registration request of receiving to register node, and indicates whether to allow register node is joined territory, domain node place.

This step is the step 209 in embodiment 2 steps in like manner.

Step 310: domain node is transmitted the territory registration request to the DM in the territory, domain node place, so that DM according to described territory registration request, judges whether to allow register node to join in this territory.

This step is the step 210 in embodiment 2 steps in like manner.

Step 311: domain node is ignored this territory and is searched request message, request message is not searched in the territory and is done any further processing.

This step is the step 211 in embodiment 2 steps in like manner.

Therefore the present embodiment also possesses following beneficial effect except possessing the beneficial effect described in the embodiment 1,2:

Because each domain node of the present embodiment is after receiving that request message is searched in the territory, before feedback field is searched response message, the time interval of whether receiving territory search response message (sign of register node wherein is identical with the sign of the register node of territory search request message) for this domain node of monitoring is: domain node obtains a time interval random value receiving territory search request message after receiving territory search request message after.Can guarantee that arbitrary domain node in the communication network sends the feedback of searching response message in the territory constantly all not identical, then for arbitrary domain node, its probability of receiving the territory search response message of other domain nodes feedbacks before the moment of sending territory search response message arrives improves greatly, therefore utilize the present embodiment scheme to be conducive to further avoid a plurality of domain nodes jointly to search the situation of response message to the register node feedback field, avoid the response message in the network redundant, reduced network signaling overhead.

Embodiment 4:

The present embodiment provides the method for a kind of territory access control, is specially adapted to work in DM or the BPR of the communication network of beacon patterns.

Referring to shown in Figure 4, arbitrary register node that a kind of arbitrary domain node that has added in the territory that the present embodiment provides is does not join domain is set up the method for territory access control, and it mainly comprises following process step:

Step 401: the domain node acceptance domain is searched request message.

Step 101 in embodiment 1 in like manner.

The domain name sign that request message comprises each aiming field corresponding to the sign of sending the register node of searching request message and register node is searched in the territory.

Step 402: if DNI identical of the arbitrary aiming field that comprises in the request message searched in the DNI in territory, domain node place and territory, and, before next delivery time of this domain node beacon frame arrives, do not receive beacon frame: beacon frame comprises the sign of register node, and do not receive territory search response message: the sign that response message comprises register node is searched in the territory, and then execution in step 403; Otherwise execution in step 406.

All divide all execution in step 403 of situation below satisfying; Otherwise execution in step 406, specifically each situation is respectively:

Situation 1: DNI identical of the arbitrary aiming field that comprises in the request message searched in the DNI in territory, domain node place and territory,

Situation 2: before next delivery time of this domain node beacon frame arrived, do not receive beacon frame: beacon frame comprised the sign of described register node,

Situation 3: before next delivery time of this domain node beacon frame arrived, do not receive territory search response message: the sign that request message comprises register node was searched in the territory.

Step 403: domain node sends beacon frame, comprises the sign of register node in beacon frame.

Domain node arrives constantly at predetermined beacon frame delivery time, in beacon frame, increase the sign (sign of the register node that comprises in the territory search request message that step 401 is received) of register node, for the register node of opposite end and the information that can determine according to this territory search response message this domain node information and territory, this domain node place, send the territory access request and search response message according to the territory to this domain node, and can know according to this beacon frame for other arbitrary domain nodes: this beacon frame is searched the response that request message is made for the territory according to this register node.

Step 404: domain node receives the territory registration request that register node is sent.

Register node is sent the territory registration request according to beacon frame to domain node after receiving the beacon frame of sign of the register node that comprises, and comprises the request that joins this territory, domain node place in the registration request of territory.

Step 405: domain node is that register node is carried out the territory access control according to the territory registration request.

Such as: this domain node is DM, and then DM judges whether to allow register node to join territory, this DM place according to actual conditions and the territory registration request in this DM and territory, this DM place, and to register node feedback judged result.

This domain node is BPR, and this BPR transmits the territory registration request to the DM in territory, place, below carrying out for DM:

According to the territory registration request and judge whether to allow register node to join territory, domain node place, and feed back judged result as via node to register node by this BPR.

Step 406: domain node is ignored this territory and is searched request message, according to the beacon frame of prior art in next delivery time prior art structure.

Domain node is ignored this territory and is searched request message, request message is not searched in the territory and is done any further processing, namely can send beacon frame according to prior art.

Therefore the present embodiment and embodiment 1,2 and 3 differences are:

The present embodiment technical scheme has been specially adapted to beacon network (no matter this network is sync beacon network or asynchronous beacon network), taken full advantage of beacon frame in the beacon network, guarantee after DM or BPR receive that request is searched in the territory, before next feedback of the beacon frame of DM or BPR arrives constantly, this DM or BPR send beacon frame in the mode of broadcasting, and comprise the sign that the register node that comprises in the request is searched in this territory in this beacon frame, thereby so that, after other any domain nodes are received this beacon frame, can according to this beacon frame determine DM or BPR current be request message feedback beacon frame to be searched in this territory, therefore these domain nodes can not respond above-mentioned territory and search request message, be conducive to reduce the redundancy of internet message, and reduce network signaling overhead.

Embodiment 5:

The present embodiment provides the method for a kind of territory access control, is specially adapted to work in the communication network of beacon patterns.

Referring to shown in Figure 5, a kind of arbitrary domain node (the non-BPR of non-DM) that has added in the territory that the present embodiment provides is set up the method for territory access control for arbitrary register node of does not join domain, and it mainly comprises following process step:

Step: 501: the domain node acceptance domain is searched request message.

Step 502: if DNI identical of the arbitrary aiming field that comprises in the request message searched in the DNI in territory, domain node place and territory, and, before the feedback of this domain node territory search response message arrives constantly, do not receive beacon frame: beacon frame comprises the sign of register node, and do not receive territory search response message: the sign that response message comprises register node is searched in the territory, and then execution in step 503; Otherwise execution in step 506.

All divide all execution in step 503 of situation below satisfying; Otherwise execution in step 506, specifically each situation is respectively:

Situation 2: before the feedback of this domain node territory search response message arrived constantly, do not receive beacon frame: beacon frame comprised the sign of described register node,

Situation 3: before the feedback of this domain node territory search response message arrived constantly, do not receive territory search response message: the sign that request message comprises register node was searched in the territory.

Step 503: the domain node feedback field is searched response message.

Comprise in the territory of feedback search response message: the sign of the register node that comprises in the request message is searched in corresponding territory.

Domain node specifically can but be not limited to mode with broadcast transmission, feed back this territory and search response message.

Step 504: domain node receives the territory registration request that register node is sent.

Step 505: domain node is that register node is carried out the territory access control according to the territory registration request.

In the present embodiment, specifically this domain node is transmitted the territory registration request to the DM in territory, place, perhaps transmits the territory registration request by the BPR between this domain node and the DM to DM, below carrying out for DM:

Step 506: domain node is ignored this territory and is searched request message.

In the present embodiment, if when being judged to be in step 502 is no, can carry out according to this step, also can be according to prior art or other predetermined other flow processs of strategy execution.

Therefore, the present embodiment and embodiment 1-3 are in like manner, adopt the present embodiment technical scheme, even in following situation: the purpose territory of register node exists, but current register node is positioned at the edge in purpose territory, the register node present position has exceeded the coverage of DM in this territory or BPR, and register node can't be received the beacon frame that DM or BPR send.In this case, near as long as other domain node of the existence of register node, use the present embodiment technical scheme, this register node still can be searched response message according to the territory of these domain node feedbacks and be joined in this existing territory, as seen adopt the present embodiment technical scheme, be conducive to improve register node and be added to probability in the existing territory, avoid causing the situation of domain name conflict owing to can't find already present purpose territory and newly-built territory.

Second: for arbitrary domain node in any territory, this domain node is after receiving the territory search request message that register node is sent, only after judging the aiming field of territory, this domain node place as this register node, and searched the feedback of response message before the moment in this domain node feedback field, only have and do not receive that territory that other domain nodes are searched request to this territory searches that response message is not subject to DM or BPR searches the beacon frame of response request message feedback to this territory yet, this domain node is just searched the request message feedback field according to this territory and is searched response message, be conducive to avoid internet message redundant, reduce network signaling overhead.

Embodiment 6:

Referring to shown in Figure 6, arbitrary register node that a kind of arbitrary domain node that has added in the territory that the present embodiment provides is does not join domain is set up the method for territory access control, and it mainly comprises following process step:

Step 601: the domain node acceptance domain is searched request message.

Step 201 among step 101 and the embodiment 2 in embodiment 1 in like manner.

Step 602: domain node is judged: whether whether the DNI's of the arbitrary aiming field that comprises in the territory search request message is identical with the DNI in this territory, domain node place.

Step 202 among step 102 and the embodiment 2 in embodiment 1 in like manner.

Step 603: if identical, then execution in step 604; Otherwise execution in step 611.

Step 6041: judge whether this domain node is DM or BPR, if be DM or BPR, then execution in step 6042; Otherwise, jump procedure 6052.

If arbitrary DNI with territory, this domain node place of the DNI of each aiming field that comprises in the current territory search request message of receiving is identical, think that then territory, this domain node place is one of aiming field that sends the register node of searching request message in this territory, whether be DM or BPR according to this domain node then, carry out different flow processs.

Step 6042: domain node is before the next one feedback of beacon frame arrives constantly, below the monitoring: response message is searched in the territory of whether having received the sign that comprises the register node that sends the current field search request message; Perhaps whether receive to comprise the register node additional field, and the identical beacon frame of sign of the register node that comprises in the request message is searched in the sign of the register node in the register node additional field and current territory of receiving.

This domain node is DM or BPR, and to the monitoring time of above-mentioned Contents for Monitoring: this domain node receives that this territory searches request message and constantly play a duration that constantly ends to the next one feedback of beacon frame.

Step 6043: if before the next one of beacon frame feedback arrives constantly, have and receive that above-mentioned territory is searched response message or had and receive above-mentioned beacon frame, then redirect execution in step 6047; Otherwise execution in step 6044.

Search response message if received the territory before next feedback of beacon frame arrives constantly, the sign of the register node in the territory of perhaps the receiving search response message is not identical with the sign that the register node that comprises in the request message is searched in the territory that step 601 is received; And, do not receive beacon frame, do not comprise the register node additional field in the beacon frame of perhaps receiving, the sign of the register node in the register node additional field in the beacon frame of perhaps receiving is not identical with the sign that the register node that comprises in the request message is searched in the territory that step 601 is received, execution in step 6044; Otherwise, redirect execution in step 6047.

Step 6044: domain node constantly sends the beacon frame of following structure in next feedback: newly-increasedly be added with the register node additional field, and in the register node additional field inclusion information: the sign of the register node that comprises in the request message is searched in the territory that step 601 is received.

Domain node increases the register node additional field in treating beacon frame that next feedback constantly sends, comprise in the register node additional field: be included in the sign that the register node in the request message is searched in territory that step 601 receives.

Domain node increases by a territory in treating the beacon frame that next feedback sends constantly, this territory that newly increases is defined as: the register node additional field.And inclusion information in this register node additional field: the sign that is included in the register node in the search request message that step 601 receives.

When domain node arrives in the next one of beacon frame feedback constantly, this beacon frame broadcast transmission that contains the register node additional field is gone out, all can receive the beacon frame of this ad hoc structure for register node and other adjacent domain nodes.

Particularly, register node is behind the beacon frame of receiving with the register node additional field, register node is defined as the DNI in the territory in the beacon frame DNI in the purpose territory that the current reality of register node can add, and during register node is synchronous according to " territory synchronizing information " in the beacon frame and this territory, register node is according to the transmission address of beacon frame, send the territory registration request to this DM or BPR, in this territory registration request, comprise the solicited message that request adds territory, domain node place, judge according to this territory registration request whether register node can add in the current field for DM.

Other domain nodes except register node are after receiving the beacon frame of this ad hoc structure, this domain node comprises the register node additional field in determining beacon frame after, whether the sign that further relatively is encapsulated in the register node that comprises in the sign territory whether this domain node the is received search request message of the register node in the register node additional field is consistent; If consistent, then domain node can determine that current DM or BPR search request message to the territory of register node and made response, and this domain node is ignored this territory and searched request message, need not that request message is searched in the territory and responds, and need not to send the territory and searches response message.

Step 6045: domain node receives the territory registration request that register node is sent.

Step 207 in embodiment 2 in like manner.

Step 6046: domain node sends registration confirmation message according to the territory registration request of receiving to register node, and indicates whether to allow register node is joined territory, domain node place.

Step 209 in embodiment 2 in like manner.

Step 6047: domain node is ignored this territory and is searched request message, according to the beacon frame of prior art in next feedback moment prior art structure.

If judgement in step 6043: the sign that had the sign of receiving the register node in territory search response message and the territory search response message and the territory that step 601 is received to search the register node that comprises in the request message before next feedback of beacon frame arrives constantly is identical; Perhaps, receive beacon frame, and comprise the register node additional field in the beacon frame of receiving, and the sign of the register node in the register node additional field is identical with the sign that the register node that comprises in the request message is searched in the territory that step 601 is received, carry out this step: when next feedback arrives constantly, send the beacon frame of prior art structure, in this beacon frame without the register node additional field.

Step 6052: in the very first time interval of domain node after request message is searched in the territory of receiving step 601, further below the monitoring: response message is searched in the territory of whether having received the sign that comprises the register node that sends the current field search request message; Perhaps whether receive to comprise the register node additional field, and the identical beacon frame of sign of the register node that comprises in the request message is searched in the sign of the register node in the register node additional field and current territory of receiving.

If this domain node is other arbitrary domain nodes of the non-BPR of non-DM, the very first time is spaced apart: this domain node receives that above-mentioned territory searches the moment of request message and rise to this domain node feedback field and search the duration that the feedback of response message is ended constantly.

With embodiment? middle step 304-3053 in like manner, in the present embodiment, can but be not limited to domain node determine current territory of receiving search the DNI in DNI and territory, this domain node place of an aiming field of the register node that comprises in the request message identical after, then carry out this step:

The random value mathematical algorithm program that this domain node operation prestores, the random value at a time interval is designated as the random time interval with it.So that this random time interval is greater than arbitrary time interval of a predetermined time interval.

Especially, in the present embodiment this random time interval greater than a predetermined time interval.Specifically can make this random time interval greater than the transmission time interval of the beacon frame of DM and BPR in this territory.

Like this, for each common domain node of synchronization, the random time interval that each common domain node obtains respectively is different, the moment that is the predetermined feedback field search response message of each common domain node is inconsistent, and the moment that the predetermined feedback field of each common domain node is searched response message all lag behind DM or BPR in this territory, territory, then each common domain node probability with the beacon frame of register node additional field of receiving before feedback field is searched response message that the territory of other domain nodes feedbacks searches that response message, particularly DM or BPR send improves greatly.Therefore utilize technique scheme to be conducive to further avoid a plurality of domain nodes all to search the situation of response message or beacon frame to the register node feedback field, avoid the response message in the network redundant, reduced network signaling overhead.And, guarantee that register node preferentially sends the territory registration request according to the beacon frame of DM or BPR.

Step 6053: if in the random time interval, have and receive this territory search response message or above-mentioned beacon frame, then redirect execution in step 611; Otherwise execution in step 6054.

Step 6054: domain node broadcasting feedback field is searched response message.

Step 206 in embodiment 2 in like manner.

Step 6055: domain node receives the territory registration request that register node is sent.

Step 107 in embodiment 1 in like manner.

Step 6056: domain node is transmitted the territory registration request to the DM in the territory, domain node place, so that DM according to described territory registration request, judges whether to allow register node to join in this territory.

Step 210 in embodiment 1 in like manner.

Step 611: domain node is ignored this territory and is searched request message, request message is not searched in the territory and is done any further processing.

Step 211 in embodiment 1 in like manner.

Therefore, 1 difference of the present embodiment and embodiment is: the present embodiment technical scheme has been specially adapted to beacon network (no matter this network is sync beacon network or asynchronous beacon network), taken full advantage of beacon frame in the beacon network, guarantee after DM or BPR receive that request is searched in the territory, before next feedback of the beacon frame of DM or BPR arrives constantly, this DM or BPR send beacon frame in the mode of broadcasting, and the newly-increased register node additional field that is added with in this beacon frame, in the register node additional field, comprise: be included in current territory of receiving and search the sign of the register node in the request message, make response thereby guarantee to have other the least possible domain nodes that request message is searched in this territory.

Whether after other any domain nodes are received this beacon frame, can determine that DM or BPR are current according to this beacon frame has the above-mentioned territory of response to search request message; If DM or BPR search request message to this territory and make response, then this domain node can be ignored this territory and searches request message and get final product.

With embodiment 1,2 in like manner, the present embodiment technical scheme has the following advantages:

First: adopt the present embodiment technical scheme, even in following situation: the purpose territory of register node exists, but current register node is positioned at the edge in purpose territory, the register node present position has exceeded the coverage of DM in this territory or BPR, therefore register node can't be received the message that DM or BPR send.

And the employing prior art, each register node only initiatively or the passive beacon frame that sends according to DM or BPR add the territory, in case register node exceeds the coverage of DM or BPR, even this register node position has the territory of beacon, the DNI of one of them aiming field that DNI that should existing territory and equipment are interior is identical, but DM or BPR in the relatively existing territory of current device are concealed nodes (being that the information that DM or BPR send can't arrive this equipment), register node can't be received any message (containing beacon frame) of DM or BPR, therefore register node can't join existing territory, this moment, register node was take arbitrary DNI of this register node aiming field as the newly-built territory of the DNI in this newly-built territory, cause in a communication network, having the identical territory of two or more DNI, affect the normal operation in each territory on the communication network.

Second: adopt the present embodiment technical scheme, for arbitrary domain node in any territory, this domain node is after receiving the territory search request message that register node is sent, judging territory, this domain node place not behind the aiming field as this register node, domain node is not searched the response of request message to this territory.

And this domain node determines that the territory, place is in the situation of one of aiming field of this register node after searching request message according to the territory, domain node was searched the feedback of response message before the moment in this domain node feedback field, below the domain node monitoring: whether received that other domain nodes are to the response (response message or beacon frame are searched in the territory) of this territory search request, in case receive, then domain node is ignored the territory and is searched request message and respond, and can feedback field not search response message.Therefore adopt this technical scheme to be conducive to reduce in the communication network each node to the response of the territory login request message of same register node, avoid internet message redundant, reduce network signaling overhead.。

Need to prove, above-mentioned beacon frame can be the beacon frame of each type, for example can be the beacon frame that is sent by DM, the R-beacon frame that also can send for BPR.

Embodiment 7:

Referring to shown in Figure 7, the method that search in a kind of territory that the present embodiment provides, the method that register node is searched according to this territory searches network, adds in the territory of this network, and it mainly comprises following process step:

Step 701: whether the register node monitoring receives beacon frame.

After register node powered on start, register node was monitored this register node and whether is received beacon frame in limiting in a predetermined very first time.

Beacon frame can be the beacon frame of each type, for example can be the beacon frame that is sent by DM, the R-beacon frame that also can send for BPR.

Step 702: if receive, then execution in step 703; Otherwise execution in step 705.

Step 703: register node is judged DNI in the beacon frame, and the DNI with arbitrary aiming field of this register node is identical, if identical, execution in step 704; Otherwise, execution in step 705.

If the DNI in the beacon frame is identical with the DNI of arbitrary aiming field of this register node, think that then the territory of sending beacon frame is one of aiming field corresponding to this register node.

In the present embodiment, DNI in the beacon frame that in a single day register node is determined to receive is identical with the DNI of arbitrary aiming field of this register node, thinks that then the territory of sending beacon frame is one of aiming field corresponding to this register node, execution in step 704, start the territory register flow path, join in this territory.

Step 704: register node sends the territory registration request according to beacon frame to the DM that sends this beacon frame or BPR.

Register node is about to this as the final goal territory when the aiming field of once determining to add in the present embodiment, sends the territory registration request to it.

In the registration request of described territory, comprise and add the DM of this beacon frame or the request in territory, BPR place of sending, if what register node was received is the beacon frame that DM sends, then directly send the territory registration request to DM, if the R-beacon frame that the BPR that register node is received sends, then directly send the territory registration request to BPR, BPR is forwarded to DM with this registration request, actual conditions according to this domain node and territory, place, judge whether to allow register node to join in this territory according to the territory registration request, if allow, domain node is forwarded to register node with registration confirmation message, and can be able to be included as the information such as node address that register node is distributed in the registration confirmation message; If do not allow, the registration feedback message that domain node will be refused registration feeds back to register node, so that register node is according to predetermined registration policy, constantly resubmit registration request in next registration, perhaps after repeatedly submitting registration request to, carry out the registration request of other aiming fields and process, perhaps newly-built territory.

Step 705: if whether very first time restriction expires, then execution in step 706; Otherwise return step 701.

If register node can't obtain the DNI beacon frame identical with the DNI of arbitrary aiming field of this register node in the beacon frame in predetermined very first time restriction, then may there be following several situation:

The one,, really there is not the territory to exist near the current register node;

The 2nd,, have the territory to exist near the current register node, but existing territory is the territory without beacon patterns, therefore register node can not received beacon frame;

The 3rd,, there is the territory to exist near the current register node, and existing territory is the territory that beacon patterns is arranged, but this register node is concealed nodes with respect to DM or the BPR in these existing territories, register node not in the coverage of these DM or BPR, register node can't with DM or BPR direct communication.

If register node can't add the territory according to beacon frame, then enter the flow process of step 706, to send by active

Step 706: request message is searched in register node broadcast transmission territory.

Register node is doomed to send territory search request message, searches in request message in this territory to include: the DNI of each aiming field that the sign of this register node and this register node are corresponding.

Other further instructions are seen the response description in embodiment 2 steps 201 in detail.

Register node sends above-mentioned territory search request message in the mode of broadcasting, any arbitrary domain node that is arranged near the arbitrary territory of register node all can be received this territory search request message, search arbitrary domain node in arbitrary territory of request message and according to predetermined agreement the request message feedback response message is sought in this territory in order to receive the territory, so that register node can be obtained according to response message the information such as the information in these territories, node place and domain node address.

Receive during this has been implemented the territory search arbitrary domain node in arbitrary territory of request message the flow process of request message feedback response message is sought in this territory can be according to shown in the flow process among the embodiment 1-6.But be not limited to this.

Step 707: whether the register node monitoring receives territory search response message.

Register node is after sending territory search request message, and in the second predetermined binding hours, whether monitoring receives territory search response message.

In the present embodiment, inclusion information in the response message is searched in the territory: send this territory and search the domain node address of response message, send this territory and search the DNI in the territory, domain node place of response message, send this territory and search territory synchronizing information and the current field in the territory, domain node place of response message and search the sign that the register node that comprises in the request message is searched in territory corresponding to response message.

Step 708: search response message if receive the territory, then execution in step 709; Otherwise execution in step 710.

Step 709: the DNI that the register node decision space the is searched response message whether DNI with arbitrary aiming field of this register node is identical, if identical, execution in step 710; Otherwise, execution in step 712.

If the DNI that search in the response message in the territory of receiving is identical with the DNI of an aiming field of this register node, determine that then it is one of aiming field corresponding to this register node that the territory of response message is searched in the territory, execution in step 710 starts the territory register flow path, joins in this territory, otherwise execution in step 712.

Step 710: register node will be sent the territory, domain node place of this search response message, be defined as the final purpose territory of this register node.

Step 711: register node sends the territory registration request to the domain node of the search response message that sends the DNI that comprises the final purpose territory.

In the registration request of territory, comprise to add and send the solicited message that this adding sends the territory, node place of this territory search response message.。

Receive the domain node of this territory registration request, the territory registration request is forwarded to the DM in this territory, so that DM is according to the actual conditions in this DM and territory, place, judge whether to allow register node to join among the A of this territory according to the territory registration request, if allow, DM as the information forward relay, is forwarded to register node with registration confirmation message by above-mentioned domain node, and can be able to be included as the information such as node address that register node is distributed in the registration confirmation message; If do not allow, DM by above-mentioned domain node as the information forward relay, the registration feedback message of refusal registration is fed back to register node, so that register node is according to predetermined registration policy, constantly resubmit registration request in next registration, perhaps after repeatedly submitting registration request to, carry out the registration request of other aiming fields and process, perhaps newly-built territory.Ordinary node is after having transmitted this registration request, and the registration confirmation message of sending after also DM will being processed is forwarded to register node again.

Step 712: if the second time restriction at the expiration, then execution in step 713; Otherwise return step 707.

If register node can't obtain the territory and search response message in the predetermined time restriction, the DNI that search in the response message in all territories of perhaps receiving is all not identical with the DNI of arbitrary aiming field of this register node, then may have following several situation:

The one,, really there is not aiming field to exist near the current register node;

The 2nd,, there is aiming field near the current register node, existing territory is the territory without beacon patterns, but arbitrary node and the register node that should have the territory can't communicate to connect;

The 3rd,, there is aiming field near the current register node, existing territory is the territory that beacon patterns is arranged, register node is not in the coverage of these DM or BPR, and arbitrary node in register node and existing territory all can't communicate to connect.

Also can't search response message adding territory according to the territory if register node both can't add the territory according to beacon frame, then enter the flow process of step 713.

Step 713: register node is current can't to add existing territory, according to predetermined policy, and newly-built territory.

Therefore, use the present embodiment technical scheme, register node is after adding the territory failure by beacon frame, also further initiatively send the territory and search request, search response message and add the territory to wait for the territory, like this, as long as have aiming field near the register node, no matter there is beacon patterns in this territory or without beacon patterns, no matter whether this register node is in this has the coverage of DM in the territory of beacon patterns or BPR, as long as arbitrary domain node of this aiming field can with the register node direct communication, then register node can add this existing aiming field, and can newly-built territory, adopt the present embodiment technical scheme to be conducive to improve the probability that register node searches existing aiming field with respect to prior art, avoid affecting the normal operation in each territory on the communication network in the situation that there is still newly-built territory and cause two territories that exist DNI identical in the network of register node aiming field register node.

Embodiment 8:

Referring to shown in Figure 7, the method that the present embodiment provides the another kind of territory of the network that is applicable to beacon to search, the method for searching according to this territory for register node searches network with in the territory that adds this network, and it mainly comprises following process step:

Step 801: whether the register node monitoring receives beacon frame.

After register node powered on start, whether register node monitoring in predetermined very first time restriction received beacon frame.

Step 802: if receive, then execution in step 803; Otherwise execution in step 805.

Step 803: register node is judged DNI in the beacon frame, and the DNI with arbitrary aiming field of this register node is identical, if identical, execution in step 804; Otherwise, execution in step 805.

In a single day register node receives DNI in beacon frame and the beacon frame, and the DNI of arbitrary aiming field of this register node of territory is identical, thinks that then the territory of sending beacon frame is one of aiming field corresponding to this register node.

Step 804: register node sends the territory registration request according to beacon frame to the DM that sends this beacon frame or BPR.

Step 805: if whether very first time restriction expires, then execution in step 806; Otherwise return step 801.

Step 806: register node sends the territory and searches request message.

Step 701-706 in like manner among step 801-806 and the embodiment 7.

Step 807: whether the register node monitoring receives territory search response message and beacon frame.

Register node is after sending territory search request message, and in the second predetermined time restriction, whether monitoring receives that response message is searched in the territory and whether monitoring receives beacon frame.

Step 808: search response message or beacon frame if receive above-mentioned territory, then execution in step 809; Otherwise execution in step 810.

Step 809: the DNI that the register node decision space is searched response message or the beacon frame whether DNI with arbitrary aiming field of this register node is identical, if identical, execution in step 810; Otherwise, execution in step 811.

If the DNI in the beacon frame of receiving is identical with the DNI of an aiming field of this register node, determine that then the territory of beacon frame is one of aiming field corresponding to this register node, execution in step 810 starts the territory register flow path, joins in this territory, otherwise execution in step 812.

If the DNI in the beacon frame of receiving is identical with the DNI of an aiming field of this register node, determine that then the territory of beacon frame is one of aiming field corresponding to this register node, execution in step 810, otherwise execution in step 812.

If the DNI that search in the response message in the territory of receiving is identical with the DNI of an aiming field of this register node, determine that then it is one of aiming field corresponding to this register node that the territory of response message is searched in the territory, execution in step 810, otherwise execution in step 812.

Step 810: register node will be sent the territory, domain node place of this search response message or beacon frame, be defined as one of aiming field that this register node can add.

Register node is stored current each definite aiming field that can add, and the transmitting terminal address (DM or BPR or other domain node addresses) of message corresponding to the current aiming field that adds (response message is searched in beacon frame or territory), so that after predetermined time restriction at the expiration, in a plurality of aiming fields that add, determine a final goal territory.

Step 811: if the second limiting time at the expiration, then execution in step 812; Otherwise return step 807.

Step 712 in like manner among this step and the embodiment 7.

Step 812: register node is determined the final purpose territory in all aiming fields that can add of determining.

In a plurality of aiming fields that add, determine a final goal territory.

Step 813: register node sends the territory registration request to the domain node of the search response message that sends the DNI that comprises the final purpose territory.

Step 710 in like manner among this step and the embodiment 7.

Step 814: register node is current can't to add existing territory, according to predetermined policy, and newly-built territory.

Step 713 in like manner among this step and the embodiment 7.

Therefore 7 differences of the present embodiment and embodiment mainly are:

1, monitoring whether search in the territory is continued to monitor whether receive beacon frame in the response message process;

2, the present embodiment is after response message and beacon frame are searched in the monitoring territory, be not that aiming field that adds of as described in Example 7 first being determined is as the final goal territory, but after the monitoring time restriction at the expiration, in a plurality of aiming fields that add, choose one as the final goal territory according to predetermined strategy.

As seen, the present embodiment also further has advantages of following except possessing the beneficial effect shown in the embodiment 7:

1, because above-mentioned difference 1 searches out the probability that has aiming field and further improve register node;

2, in a determinate multitudes aiming field that can add, choose one as the final goal territory according to predetermined strategy.Being conducive to choose wherein, only territory is conducive to the optimization configuration of territory net as the final goal territory.

Embodiment 9:

Referring to shown in Figure 9.The present embodiment provide a kind of communication equipment its mainly comprise: receiving element 901, transmitting element 902 and CPU 903.

Receiving element 901 is used for receipt message.Transmitting element 902 is used for sending message.

CPU 903 is connected with receiving element 901, transmitting element 902 respectively, is used for the work of control receiving element 901 and transmitting element 902, and the specific works principle is as follows:

After receiving element 901 receives that request message is searched in the territory, if the domain name in territory, communication equipment place identifies the territory of receiving with receiving element 901 and searches identical that the domain name of the arbitrary aiming field that comprises in the request message territory identifies, and, before the feedback that transmitting element 902 feedback field of this communication equipment are searched response message (searching the request message feedback according to the territory) arrives constantly, do not receive the territory search response message of the sign that comprises register node, then CPU 903 control transmitting elements 902 feedback field are searched response message, the sign that comprises register node in the response message is searched in territory in feedback, for the register node of opposite end and the information that can determine according to this territory search response message this communication equipment information and territory, this domain node place, send the territory access request and search response message according to the territory to this communication equipment.

After receiving element 901 received that request message is searched in the territory, CPU 903 was that register node is carried out the territory access control according to the actual conditions of this communication equipment in the territory, place according to the territory registration request.Such as: this communication equipment is DM, and then communication equipment judges whether to allow register node to join territory, domain node place according to actual conditions and the territory registration request in domain node and territory, communication equipment place, and to register node feedback judged result.

This domain node is not DM, and communication equipment is transmitted the territory registration request to the DM in territory, domain node place, below carrying out for DM:

Further flow process is referring to embodiment 1,2,3 detailed description.

Therefore, adopt the present embodiment technical scheme, in arbitrary territory, use this communication equipment as arbitrary domain node, it is after communication equipment receives that request message is searched in the territory of register node, after if territory, this communication equipment place is one of aiming field of register node, and after receiving that request message is searched in this territory, before the feedback of territory search response message arrives constantly, do not receive the territory search response of the sign of the register node in the IncFlds search request message, communication equipment just can be broadcasted feedback field and be searched response message, knows near the purpose territory that can add this register node and sends the territory registration request to communication equipment so that register node can be searched response message according to this.

First: adopt the present embodiment technical scheme, even in following situation: the purpose territory of register node exists, but current register node is positioned at the edge in purpose territory, the register node present position has exceeded the coverage of DM in this territory or BPR, and register node can't be received the message that DM or BPR send.Use this programme, as long as near other domain node of the existence of register node is used the present embodiment technical scheme, this register node still can join in this existing territory.As seen adopt the present embodiment technical scheme, be conducive to improve register node and be added to probability in the existing territory, avoid causing the situation of domain name conflict owing to can't find already present purpose territory and newly-built territory.

Embodiment 10:

Referring to shown in Figure 10.The present embodiment provides a kind of communication equipment, and its DM or BPR that can be used as in the territory uses, and it mainly comprises: receiving element 1001, transmitting element 1002 and CPU 1003.

Receiving element 1001 is used for receipt message.Transmitting element 1002 is used for sending message.

CPU 1003 is connected with receiving element 1001, transmitting element 1002 respectively, is used for the work of control receiving element 1001 and transmitting element 1002, and the specific works principle is as follows:

After receiving element 1001 receives that request message is searched in the territory, if identical that the domain name of the arbitrary aiming field that comprises in the request message identifies searched in the domain name in territory, communication equipment place sign and territory, and, before next delivery time of beacon frame arrives, do not receive beacon frame: beacon frame comprises the sign of described register node, and do not receive territory search response message: the sign that response message comprises described register node is searched in the territory, control transmitting element 1002 sends beacon frame, the sign that in beacon frame, comprises register node, for the register node of opposite end and the information that can determine according to this beacon frame this communication equipment information and territory, this domain node place, send the territory access request and search response message according to the territory to this communication equipment.

After receiving element 1001 was received registration request, CPU 1003 was that register node is carried out the territory access control according to the actual conditions of this communication equipment in the territory, place according to the territory registration request.Such as:

This communication equipment is DM, and then communication equipment judges whether to allow register node to join territory, domain node place according to actual conditions and the territory registration request in domain node and territory, communication equipment place, and to register node feedback judged result.

This domain node is BPR, and communication equipment is transmitted the territory registration request to the DM in territory, domain node place, below carrying out for DM:

Further flow process is referring to embodiment 4,6 detailed description.

Therefore, adopt the present embodiment technical scheme, in arbitrary territory, use this communication equipment as arbitrary DM or BPR, it is after communication equipment receives that request message is searched in the territory of register node, after if territory, this communication equipment place is one of aiming field of register node, and after receiving that request message is searched in this territory, before next delivery time of beacon frame arrives, do not receive the territory search response of the sign of the register node in the IncFlds search request message, communication equipment just can send beacon frame, and comprise the sign that the register node that comprises in the request is searched in this territory in this beacon frame, thereby so that, after other any domain nodes are received this beacon frame, can according to this beacon frame determine DM or BPR current be request message feedback beacon frame to be searched in this territory, therefore these domain nodes can not respond above-mentioned territory and search request message, be conducive to reduce the redundancy of internet message, and reduce network signaling overhead.

Embodiment 11:

Referring to shown in Figure 11.The present embodiment provides a kind of communication equipment, this communication equipment be specially adapted in the beacon frame mode network the common domain node of the non-BPR of non-DM.

This communication equipment mainly comprises: receiving element 1101, transmitting element 1102 and CPU 1103.

Receiving element 1101 is used for receipt message.Transmitting element 1102 is used for sending message.

CPU 1103 is connected with receiving element 1101, transmitting element 1102 respectively, is used for the work of control receiving element 1101 and transmitting element 1102, and the specific works principle is as follows:

After receiving element 1101 receives that request message is searched in described territory, if the domain name in territory, communication equipment place identifies the territory of receiving with receiving element 1101 and searches identical that the domain name of the arbitrary aiming field that comprises in the request message identifies, and, before the feedback of searching request message feedback field search response message according to the territory arrives constantly, do not receive beacon frame (and beacon frame comprises the sign of described register node), and do not receive territory search response message (and the sign that response message comprises described register node is searched in the territory), then CPU 1103 control transmitting elements 1102 feedback field are searched response message, search the sign that comprises register node in the response message in the territory, for the register node of opposite end and the information that can determine according to this territory search response message this communication equipment information and territory, this domain node place, send the territory access request and search response message according to the territory to this communication equipment.

And after receiving element 1101 was received registration request, CPU 1103 was according to registration request, for the register node of sending described registration request is carried out the territory access control.Such as:

Communication equipment is transmitted the territory registration request to the DM in territory, domain node place, perhaps transmits this territory registration request as relaying to DM by the BPR that this communication equipment is connected with DM, below carrying out for DM:

Further flow process is referring to embodiment 5,6 detailed description.

Therefore, the present embodiment and embodiment 9 are in like manner, adopt the present embodiment technical scheme, even in following situation: the purpose territory of register node exists, but current register node is positioned at the edge in purpose territory, the register node present position has exceeded the coverage of DM in this territory or BPR, and register node can't be received the beacon frame that DM or BPR send.In this case, as long as the domain node shown near this communication equipment of existence of register node, use the present embodiment technical scheme, this register node still can be searched response message according to the territory of this communication equipment feedback and be joined in this existing territory, as seen adopt the present embodiment technical scheme, be conducive to improve register node and be added to probability in the existing territory, avoid causing the situation of domain name conflict owing to can't find already present purpose territory and newly-built territory.

Second: for arbitrary domain node in any territory, communication equipment is after receiving the territory search request message that register node is sent, only after judging the aiming field of territory, this communication equipment place as this register node, and searched the feedback of response message before the moment in this communication equipment feedback field, only have and do not receive that territory that other domain nodes are searched request to this territory searches that response message is not subject to DM or BPR searches the beacon frame of response request message feedback to this territory yet, this communication equipment is just searched the request message feedback field according to this territory and is searched response message, be conducive to avoid internet message redundant, reduce network signaling overhead.

Embodiment 12:

Referring to shown in Figure 12, the present embodiment provides a kind of communication equipment, and this communication equipment has been specially adapted to the beacon frame mode network, and the territory search capability of this communication equipment as register node the time is stronger.

This communication equipment mainly comprises: receiving element 1201, transmitting element 1202 and CPU 1203.

CPU 1203 is connected with receiving element 1201, transmitting element 1202 respectively, is used for the work of control receiving element 1201 and transmitting element 1202, and the specific works principle is as follows:

If receiving element 1201 is not received beacon frame in the monitoring periods of beacon frame, the beacon frame of perhaps receiving does not comprise domain name when sign of arbitrary aiming field of register node, request message is searched in CPU 1203 control transmitting elements 1202 broadcast transmission territories, searches the sign that request message comprises this communication equipment in the territory;

After receiving element 1201 receives that response message is searched in the territory, if searching response message, the territory comprises: when the domain name of arbitrary aiming field of register node identifies, CPU 1203 is searched response message according to the territory, determine the final purpose territory, and CPU 1203 control transmitting elements 1202 are searched response message (response message is searched in the territory that comprises the domain name sign in described final purpose territory) transmission territory registration request according to the territory, in the registration request of territory, comprise the request that adds the final purpose territory, so that the domain node of opposite end is carried out the territory access process of response for this register node according to this registration request, if this domain node is DM, then directly carry out the territory access control, otherwise be transmitted to the DM in this territory, so that this DM carries out the territory access control.

Further referring to shown in the corresponding contents among the embodiment 1-11, therefore not to repeat here in detail for flow process.

Therefore, use the present embodiment technical scheme, this communication equipment is as register node the time, after adding the territory failure by beacon frame, also further initiatively send the territory and search request, search response message and add the territory to wait for the territory, like this, as long as have aiming field near the communication equipment, no matter there is beacon patterns in this territory or without beacon patterns, no matter whether this communication equipment is in this has the coverage of DM in the territory of beacon patterns or BPR, as long as arbitrary domain node of this aiming field can with the communication equipment direct communication, then communication equipment can add this existing aiming field, and can newly-built territory, adopt the present embodiment technical scheme to be conducive to improve the probability that communication equipment searches existing aiming field with respect to prior art, avoid affecting the normal operation in each territory on the communication network in the situation that there is still newly-built territory and cause two territories that exist DNI identical in the network of communication equipment aiming field communication equipment.

Embodiment 13:

Referring to shown in Figure 13.The present embodiment provide a kind of communication equipment its mainly comprise: receiver 1301, transmitter 1302 and central processing unit 1303.

Receiver 1301 is used for receipt message.Transmitter 1302 is used for sending message.

Central processing unit 1303 is connected with receiver 1301, transmitter 1302 respectively, is used for the work of control receiver 1301 and transmitter 1302, and the specific works principle is as follows:

After receiver 1301 receives that request message is searched in the territory, if the domain name in territory, communication equipment place identifies the territory of receiving with receiver 1301 and searches identical that the domain name of the arbitrary aiming field that comprises in the request message territory identifies, and, before the feedback that transmitter 1302 feedback field of this communication equipment are searched response message (searching the request message feedback according to the territory) arrives constantly, do not receive the territory search response message of the sign that comprises register node, then central processing unit 1303 control transmitters 1302 feedback field are searched response message, the sign that comprises register node in the response message is searched in territory in feedback, for the register node of opposite end and the information that can determine according to this territory search response message this communication equipment information and territory, this domain node place, send the territory access request and search response message according to the territory to this communication equipment.

After receiver 1301 received that request message is searched in the territory, central processing unit 1303 was that register node is carried out the territory access control according to the actual conditions of this communication equipment in the territory, place according to the territory registration request.Such as: this communication equipment is DM, and then communication equipment judges whether to allow register node to join territory, domain node place according to actual conditions and the territory registration request in domain node and territory, communication equipment place, and to register node feedback judged result.

Further flow process is referring to embodiment 1,2,3 detailed description.

Embodiment 14:

Referring to shown in Figure 14.The present embodiment provides a kind of communication equipment, and its DM or BPR that can be used as in the territory uses, and it mainly comprises: receiver 1401, transmitter 1402 and central processing unit 1403.

Receiver 1401 is used for receipt message.Transmitter 1402 is used for sending message.

Central processing unit 1403 is connected with receiver 1401, transmitter 1402 respectively, is used for the work of control receiver 1401 and transmitter 1402, and the specific works principle is as follows:

After receiver 1401 receives that request message is searched in the territory, if identical that the domain name of the arbitrary aiming field that comprises in the request message identifies searched in the domain name in territory, communication equipment place sign and territory, and, before next delivery time of beacon frame arrives, do not receive beacon frame: beacon frame comprises the sign of described register node, and do not receive territory search response message: the sign that response message comprises described register node is searched in the territory, control transmitter 1402 sends beacon frame, the sign that in beacon frame, comprises register node, for the register node of opposite end and the information that can determine according to this beacon frame this communication equipment information and territory, this domain node place, send the territory access request and search response message according to the territory to this communication equipment.

After receiver 1401 was received registration request, central processing unit 1403 was that register node is carried out the territory access control according to the actual conditions of this communication equipment in the territory, place according to the territory registration request.Such as:

Further flow process is referring to embodiment 4,6 detailed description.

Embodiment 15:

Referring to shown in Figure 15.The present embodiment provides a kind of communication equipment, this communication equipment be specially adapted in the beacon frame mode network the common domain node of the non-BPR of non-DM.

This communication equipment mainly comprises: receiver 1501, transmitter 1502 and central processing unit 1503.

Receiver 1501 is used for receipt message.Transmitter 1502 is used for sending message.

Central processing unit 1503 is connected with receiver 1501, transmitter 1502 respectively, is used for the work of control receiver 1501 and transmitter 1502, and the specific works principle is as follows:

After receiver 1501 receives that request message is searched in described territory, if the domain name in territory, communication equipment place identifies the territory of receiving with receiver 1501 and searches identical that the domain name of the arbitrary aiming field that comprises in the request message identifies, and, before the feedback of searching request message feedback field search response message according to the territory arrives constantly, do not receive beacon frame (and beacon frame comprises the sign of described register node), and do not receive territory search response message (and the sign that response message comprises described register node is searched in the territory), then central processing unit 1503 control transmitters 1502 feedback field are searched response message, search the sign that comprises register node in the response message in the territory, for the register node of opposite end and the information that can determine according to this territory search response message this communication equipment information and territory, this domain node place, send the territory access request and search response message according to the territory to this communication equipment.

And after receiver 1501 was received registration request, central processing unit 1503 was according to registration request, for the register node of sending described registration request is carried out the territory access control.Such as:

Further flow process is referring to embodiment 5,6 detailed description.

Embodiment 12:

Referring to shown in Figure 16, the present embodiment provides a kind of communication equipment, and this communication equipment has been specially adapted to the beacon frame mode network, and the territory search capability of this communication equipment as register node the time is stronger.

This communication equipment mainly comprises: receiver 1601, transmitter 1602 and central processing unit 1603.

Central processing unit 1603 is connected with receiver 1601, transmitter 1602 respectively, is used for the work of control receiver 1601 and transmitter 1602, and the specific works principle is as follows:

If receiver 1601 is not received beacon frame in the monitoring periods of beacon frame, the beacon frame of perhaps receiving does not comprise domain name when sign of arbitrary aiming field of register node, request message is searched in central processing unit 1603 control transmitters 1602 broadcast transmission territories, searches the sign that request message comprises this communication equipment in the territory;

After receiver 1601 receives that response message is searched in the territory, if searching response message, the territory comprises: when the domain name of arbitrary aiming field of register node identifies, central processing unit 1603 is searched response message according to the territory, determine the final purpose territory, and central processing unit 1603 control transmitters 1602 are searched response message (response message is searched in the territory that comprises the domain name sign in described final purpose territory) transmission territory registration request according to the territory, in the registration request of territory, comprise the request that adds the final purpose territory, so that the domain node of opposite end is carried out the territory access process of response for this register node according to this registration request, if this domain node is DM, then directly carry out the territory access control, otherwise be transmitted to the DM in this territory, so that this DM carries out the territory access control.

Need to prove, the described communication equipment of the various embodiments described above mainly is that this equipment can be used for naming as the communication node (being called domain node in the concrete a certain territory) of communication network, but in fact this communication equipment can be used for realizing other function except being used for communication, for example is specifically as follows power line communications apparatus.

In the various embodiments described above beacon frame can be the beacon frame of each type, for example:

When if this communication equipment is DM in the territory of network, what it sent is beacon frame.

When if this communication equipment is BPR in the territory of network, what it sent is the R-beacon frame.

Device embodiment described above only is schematic, wherein said unit as the separating component explanation can or can not be physically to separate also, the parts that show as the unit can be or can not be physical locations also, namely can be positioned at a place, perhaps also can be distributed on a plurality of network element.Can select according to the actual needs wherein some or all of module to realize the purpose of the present embodiment scheme.Those of ordinary skills namely can understand and implement in the situation that do not pay performing creative labour.

Through the above description of the embodiments, those skilled in the art can be well understood to each execution mode and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware.Based on such understanding, the part that technique scheme contributes to prior art in essence in other words can embody with the form of software product, this computer software product can be stored in the computer-readable recording medium, such as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be personal computer, server, perhaps power line communications apparatus etc.) carry out the described method of some part of each embodiment or embodiment.

Above-described execution mode does not consist of the restriction to this technical scheme protection range.Any at above-mentioned execution mode spirit and principle within do modification, be equal to and replace and improvement etc., all should be included within the protection range of this technical scheme.

Claims

1. the method for a territory access control is characterized in that, comprising:

2. the method for territory access control according to claim 1 is characterized in that,

Described domain node feeds back described territory and searches response message specifically in the mode of broadcast transmission.

3. the method for territory access control according to claim 1 and 2 is characterized in that,

Described domain node is that described register node is carried out the territory access control according to described territory registration request, specifically:

4. the method for territory access control according to claim 1 and 2 is characterized in that,

In step: the domain node acceptance domain is searched after the request message, also comprises:

5. the method for territory access control according to claim 1 and 2 is characterized in that,

Described feedback is specially constantly:

6. the method for territory access control according to claim 1 and 2 is characterized in that,

Described domain node is: described primary domain controller,

7. the method for a territory access control is characterized in that, comprising:

8. the method for territory access control according to claim 7 is characterized in that,

The sign that in described beacon frame, comprises described register node, specifically:

9. according to claim 7 or the method for 8 described territory access controls, it is characterized in that,

Described domain node specifically in the mode of broadcasting, sends described beacon frame.

10. according to claim 7 or the method for 8 described territory access controls, it is characterized in that,

11. according to claim 7 or the method for 8 described territory access controls, it is characterized in that,

12. the method for a territory access control is characterized in that, comprising:

13. the method for access control according to claim 12 is characterized in that,

14. according to claim 12 or the method for 13 described access controls, it is characterized in that,

15. according to claim 12 or the method for 13 described access controls, it is characterized in that,

16. according to claim 12 or the method for 13 described territory access controls, it is characterized in that,

Described feedback is specially constantly:

17. the method for territory according to claim 16 access control is characterized in that,

Described random time interval is greater than the beacon frame transmission time interval of the primary domain controller in territory, described domain node place.

18. the method for territory according to claim 17 access control is characterized in that,

Described random time interval is also greater than arbitrary beacon agency's in: territory, described domain node place beacon frame transmission time interval.

19. the method that search in the territory is characterized in that, comprising:

Whether the register node monitoring receives beacon frame;

20. the method that search in territory according to claim 19 is characterized in that,

Described register node is searched response message according to described territory, determines the final purpose territory, specifically:

21. the method that search in territory according to claim 19 is characterized in that,

22. the method according to the right control requires 19 or 20 or 21 described territories to search is characterized in that,

In step: whether described register node monitoring receives when response message is searched in the territory, also comprises:

Whether described register node monitoring receives beacon frame;

23. a communication equipment is characterized in that, comprising:

Receiving element is used for receipt message;

Transmitting element is used for sending message;

24. communication equipment according to claim 23 is characterized in that,

CPU is carried out the territory access control for the register node of sending described registration request after described receiving element is received described registration request, be specially:

24, communication equipment according to claim 23 is characterized in that,

25. a communication equipment is characterized in that, comprising:

Receiving element is used for receipt message;

Transmitting element is used for sending message;

26. communication equipment according to claim 24 is characterized in that,

Described CPU after described receiving element is received registration request, is used for according to described registration request, carries out the territory access control for the register node of sending described registration request, is specially:

27. communication equipment according to claim 24 is characterized in that,

28. a communication equipment is characterized in that, comprising:

Receiving element is used for receipt message;

Transmitting element is used for sending message;

29. communication equipment according to claim 25 is characterized in that,

Described CPU is used for being used for according to described registration request after described receiving element is received registration request, carries out the territory access control for the register node of sending described registration request, is specially:

30. a communication equipment is characterized in that, comprising:

Receiving element is used for receipt message;

Transmitting element is used for sending message;

31. a communication equipment is characterized in that, comprising:

Receiver is used for receipt message;

Transmitter is used for sending message;

32. communication equipment according to claim 31 is characterized in that,

Described central processing unit after described receiver is received registration request, is used for according to described registration request, carries out the territory access control for the register node of sending described registration request, is specially:

33. a communication equipment is characterized in that, comprising:

Receiver is used for receipt message;

Transmitter is used for sending message;

34. want 33 described communication equipments according to right, it is characterized in that,

Described central processing unit is used for being used for according to described registration request after described receiver is received registration request, carries out the territory access control for the register node of sending described registration request, is specially:

35. a communication equipment is characterized in that, comprising:

Receiver is used for receipt message;

Transmitter is used for sending message;