CN103327575A - Communication device and wireless communication method - Google Patents
Communication device and wireless communication method Download PDFInfo
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- CN103327575A CN103327575A CN2013102743930A CN201310274393A CN103327575A CN 103327575 A CN103327575 A CN 103327575A CN 2013102743930 A CN2013102743930 A CN 2013102743930A CN 201310274393 A CN201310274393 A CN 201310274393A CN 103327575 A CN103327575 A CN 103327575A
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Abstract
The invention provides a communication device which comprises a data processing module which generates an initial network access message frame, wherein the initial network access message frame at least comprises a destination address which is a multicast address which is a uniformly distributed only address corresponding to a receiving side of the initial network access message frame; and a data exchange module which sends the initial network access message frame. The invention also provides a wireless communication method. Through the technical scheme of the invention, in an active scanning process that the communication device executes network switching, the sending target of the message frame is accurate as much as possible, thus the waste of electricity caused by blind sending is avoided, and the message conflict caused by the reception of too many response message frames at the same time is avoided.
Description
Technical field
The present invention relates to the mobile communication technology field, in particular to communication equipment and wireless communications method.
Background technology
Interworking between wlan network and the 3GPP network has become the research direction of a hot topic now, in 802.11 existing 802.11u standard formulation ANQP(Access Network Query Protocol, the access network vlan query protocol VLAN) agreement comes the Interworking mechanism between regulation wlan network and the 3GPP network.
The STA(terminal) process of switching from the 3GPP network to wlan network mainly comprises: STA scanning BSS(Basis Service Set, Basic Service Set), this process is longer, because the principle of wlan network is exactly to intercept afterwards earlier to send, so the process of STA scanning at first is drive sweep, namely intercept AP(Access Point, access point) beacon (Beacon) frame of broadcasting, and may this process in 13 channels, carry out; If can not listen to AP in drive sweep, then Zhu Dong transmission probe requests thereby (Probe request) frame is carried out active scan.In active scan process, the probe request that STA sends is broadcast message frame, and is with an asterisk wildcard in this frame, and namely Wild SSID represents that all AP that receive this Probe request can reply response and give STA.
But on the one hand, in above-mentioned drive sweep and active scan, the scanning of carrying out all is blindly, because STA knows that not having AP in which channel exists, thereby both has been unfavorable for the terminal power saving, and having has wasted the time of switching; On the other hand, in active scan process, although there is AP to respond, because the SSID that the probe request that STA sends is carried is asterisk wildcard, may cause STA to receive response signaling from a lot of AP like this, the possibility that conflict occurs increases greatly.
Therefore, need a kind of new technical scheme, can make in the active scan process of communication equipment when carrying out the network switching, make that as much as possible the transmission target of request message frame is more accurate, thereby avoid blindly sending the electric weight waste that causes, and receive too much response message frame simultaneously and the message collision that causes.
Summary of the invention
The present invention just is being based on the problems referred to above, a kind of new technical scheme has been proposed, can make in the active scan process of communication equipment when carrying out the network switching, make that as much as possible the transmission target of request message frame is more accurate, thereby avoid blindly sending the electric weight waste that causes, and receive too much response message frame simultaneously and the message collision that causes.
In view of this, the present invention proposes a kind of communication equipment, comprise: data processing module, generate the initial network entry message frame, described initial network entry message frame comprises destination address at least, described destination address is multicast address, and described multicast address is the unique address of unified distribution of recipient's correspondence of described initial network entry message frame; The data interaction module sends described initial network entry message frame.
In this technical scheme, communication equipment can be mobile phone or flat board, and data processing module can be the chip module that data are handled in the communication equipment, and the data interaction module then is equivalent to signal receiving/transmission device and antenna etc.Communication equipment can be to be under certain network, such as being under the 3GPP network, before sending the initial network entry message frame, wishes to switch to another network, such as wlan network from the 3GPP network.Particularly, such as current certain the service macro base station that is under the 3GPP network of communication equipment, then multicast address can be served all or a plurality of access point corresponding address in the coverage of macro base station for this.Destination address by the initial network entry message frame is set to multicast address, thereby both solved near the problem that whether has, exists which access point determining, avoid blindly scanning to cause the electric weight waste of communication equipment, can may receive a large amount of response message frame by having dwindled response range to avoid blindly sending broadcast message frame as much as possible again, avoid consequent conflict, thereby be conducive to shorten the network switching time of this communication equipment.
In technique scheme, preferably, described initial network entry message frame is probe request, handover request message frame or changes the request message frame fast.
In this technical scheme, be in a certain network if communication equipment is current, in the 3GPP network, switch to wlan network, under the prerequisite of the multicast address that obtains the access point (AP) under the 3GPP macro base station institute coverage, can send probe request, handover request message frame or change the request message frame fast, wherein the destination address of these frames be the multicast address that obtains in advance.
In technique scheme, preferably, before generating described initial network entry message frame, described data interaction module is also obtained the unique address of unified distribution of recipient's correspondence of described initial network entry message frame.
In this technical scheme, communication equipment has at first been set up relatedly with a certain wireless network, will set up related with other wireless network for a certain reason.Such as having set up related when communication equipment with the 3GPP network, before switching to wlan network, then can be by the multicast address of all access points in its coverage of service macro base station acquisition request of this 3GPP network correspondence, the multicast address of these access points is unique.Particularly, communication equipment can send the multicast address demand signalling to the service macro base station, then serves macro base station by returning response signaling, or by data transmission manner, to realize the feedback to multicast address.
In technique scheme, preferably, the unique address of the described unified distribution that described data interaction module is obtained is the recipient's of described initial network entry message frame medium access control system (MAC) address.
In this technical scheme, combine by the actual address with a plurality of access points, thereby form unique multicast address of these access points, so that communication equipment specifies these access points as the recipient of initial network entry message frame simultaneously.Particularly, multicast address can be the same with the form of MAC Address, is 48 bits, can certainly be other number of bits length.
In technique scheme, preferably, the medium access control multicast address that the recipient that the unique address of the described unified distribution that described data interaction module is obtained is described initial velocity networking message frame for unified mechanism distributes.
In this technical scheme, such as for the 3GPP network, access point in service macro base station under this network and the coverage of this service macro base station is managed by unified mechanism, unify mechanism such as this and can be OAM(Operation, Administration, Maintenance, the network management maintenance entity), then this unification mechanism is after distributing unitedly the unique address of the access point in the coverage of service macro base station, can directly allocation result be informed all access points in service macro base station and the service macro base station coverage, thus convenient handover management to 3GPP network and WALN network.
The present invention has also correspondingly proposed a kind of wireless communications method, comprise: generate the initial network entry message frame, described initial network entry message frame comprises destination address at least, described destination address is multicast address, and described multicast address is the unique address of unified distribution of recipient's correspondence of described initial network entry message frame; Send described initial network entry message frame.
In this technical scheme, this communication equipment has been under certain network, such as being under the 3GPP network, before sending the initial network entry message frame, wishes to switch to another network, such as wlan network from the 3GPP network.Communication equipment can be mobile phone or flat board.Particularly, such as current certain the service macro base station that is under the 3GPP network of communication equipment, then multicast address can be served all or a plurality of access point corresponding address in the coverage of macro base station for this.Destination address by the initial network entry message frame is set to multicast address, thereby both solved near the problem that whether has, exists which access point determining, avoid blindly scanning to cause the electric weight waste of communication equipment, can may receive a large amount of response message frame by having dwindled response range to avoid blindly sending broadcast message frame as much as possible again, avoid consequent conflict, thereby be conducive to shorten the network switching time of this communication equipment.
In technique scheme, preferably, described initial network entry message frame is probe request, handover request message frame or changes the request message frame fast.
In this technical scheme, be in a certain network if communication equipment is current, in the 3GPP network, switch to wlan network, under the prerequisite of the multicast address that obtains the access point (AP) under the 3GPP macro base station institute coverage, can send probe request, handover request message frame or change the request message frame fast, wherein the destination address of these frames be the multicast address that obtains in advance.
In technique scheme, preferably, before generating described initial network entry message frame, also comprise: the unique address of unified distribution that obtains recipient's correspondence of described initial network entry message frame.
In this technical scheme, communication equipment has at first been set up relatedly with a certain wireless network, will set up related with other wireless network for a certain reason.Such as having set up related when communication equipment with the 3GPP network, before switching to wlan network, then can be by the multicast address of all access points in its coverage of service macro base station acquisition request of this 3GPP network correspondence, the multicast address of these access points is unique.Particularly, communication equipment can send the multicast address demand signalling to the service macro base station, then serves macro base station by returning response signaling, or by data transmission manner, to realize the feedback to multicast address.
In technique scheme, preferably, the unique address of described unified distribution is the recipient's of described initial network entry message frame medium access control system (MAC) address.
In this technical scheme, combine by the actual address with a plurality of access points, thereby form unique multicast address of these access points, so that communication equipment specifies these access points as the recipient of initial network entry message frame simultaneously.Particularly, multicast address can be the same with the form of MAC Address, is 48 bits, can certainly be other number of bits length.
In technique scheme, preferably, the medium access control multicast address that the recipient that the unique address of described unified distribution is described initial velocity networking message frame for unified mechanism distributes.
In this technical scheme, such as for the 3GPP network, access point in service macro base station under this network and the coverage of this service macro base station is managed by unified mechanism, unify mechanism such as this and can be OAM, then this unification mechanism is after distributing unitedly the unique address of the access point in the coverage of service macro base station, can directly allocation result be informed all access points in service macro base station and the service macro base station coverage, thus convenient handover management to 3GPP network and WALN network.
According to another aspect of the invention, also proposed a kind of communication equipment, having comprised: the data interaction module, receive the initial network entry message frame, and the response message frame that sends described initial network entry message frame, described initial network entry message frame comprises destination address at least, and described destination address is multicast address; Data processing module under the identical situation of actual address that described multicast address and described communication equipment are assigned with, generates the response message frame of described initial network entry message frame.
In this technical scheme, communication equipment can be router, and data processing module can be the chip module that data are handled in the communication equipment, and the data interaction module then is equivalent to signal receiving/transmission device and antenna etc.When receiving the initial network entry message frame, communication equipment should parse its destination address at least, if this destination address is multicast address, should determine then whether this multicast address and the address of self are complementary, if coupling, then should return the corresponding response message frame, to realize and being connected of the transmit leg of this initial network entry message frame.Particularly, the STA that sends above-mentioned initial network entry message frame can be under certain network, such as being under the 3GPP network, before sending the initial network entry message frame, hope switches to another network from the 3GPP network, such as the wlan network of herein communication equipment correspondence.Particularly, such as current certain the service macro base station that is under the 3GPP network of STA, then multicast address can be served all or a plurality of communication equipment corresponding address in the coverage of macro base station for this.Destination address by the initial network entry message frame is set to multicast address, thereby both solved near to determine whether to exist, exist the STA which communication equipment problem, avoid blindly scanning to cause the electric weight waste of STA, can may receive the response message frame that a large amount of communication equipments returns by having dwindled response range to avoid blindly sending broadcast message frame as much as possible again, avoid consequent conflict, thereby be conducive to shorten the network switching time of this STA.
In technique scheme, preferably, under the actual address that described data processing module distributes described destination address and the described recipient situation inequality, do not respond described initial network entry message frame.
In this technical scheme, when destination address (multicast address) and actual address do not match, illustrate that this initial network entry message frame is not to send to self, then no longer carry out parse operation, abandon this message frame, and do not return response message frame.Therefore, be the initial network entry message frame of destination address by sending multicast address, then can avoid a lot of incoherent access points to return response frame to transmit leg, thereby avoid too much message sink to cause producing conflict at transmit leg.
In technique scheme, preferably, the described initial network entry message frame that described data interaction module receives is probe request, handover request message frame or changes the request message frame fast that described response message frame is probing response frame, handoff response frame or quick transition response frame.
In this technical scheme, be in a certain network if STA is current, in the 3GPP network, wlan network to the communication equipment correspondence switches, under the prerequisite of the multicast address that obtains the communication equipment under the 3GPP macro base station institute coverage, can send probe request, handover request message frame or change the request message frame fast, wherein the destination address of these frames be the multicast address that obtains in advance.Than broadcast message frame, by the application be the claim frame of destination address with the multicast address, thereby strengthened the transmission purpose of claim frame, also avoided the transmit leg of claim frame to receive too much response frame, prevent the conflict.
In technique scheme, preferably, described data interaction module was obtained the actual address of described distribution before receiving described initial network entry message frame, and described actual address is the medium access control address of unified distribution.
In this technical scheme, combine by the actual address with a plurality of access points, thereby form unique multicast address of these access points (being the communication equipment in this programme), so that the transmit leg of claim frame (being the initial network entry message frame) specifies these access points as the recipient of initial network entry message frame simultaneously.Particularly, multicast address can be the same with the form of MAC Address, is 48 bits, can certainly be other number of bits length.
In technique scheme, preferably, also comprise: the medium access control multicast address that described actual address is distributed for unified mechanism.
In this technical scheme, such as for the 3GPP network, access point in service macro base station under this network and the coverage of this service macro base station is managed by unified mechanism, unify mechanism such as this and can be OAM, then this unification mechanism is after distributing unitedly the unique address of the access point in the coverage of service macro base station, can directly allocation result be informed all access points (being the communication equipment in this programme) in service macro base station and the service macro base station coverage, thus convenient handover management to 3GPP network and WALN network.
The present invention has also correspondingly proposed a kind of wireless communications method, comprising: receive the initial network entry message frame, described initial network entry message frame comprises destination address at least, and described destination address is multicast address; When the actual address that is assigned with as described multicast address and the recipient of described initial network entry message frame was identical, the response message frame that generates and sends described initial network entry message frame was given the transmit leg of described initial network entry message frame.
In this technical scheme, communication equipment can be router.When receiving the initial network entry message frame, communication equipment should parse its destination address at least, if this destination address is multicast address, should determine then whether this multicast address and the address of self are complementary, if coupling, then should return the corresponding response message frame, to realize and being connected of the transmit leg of this initial network entry message frame.Particularly, the STA that sends above-mentioned initial network entry message frame can be under certain network, such as being under the 3GPP network, before sending the initial network entry message frame, hope switches to another network from the 3GPP network, such as the wlan network of herein communication equipment correspondence.Particularly, such as current certain the service macro base station that is under the 3GPP network of STA, then multicast address can be served all or a plurality of communication equipment corresponding address in the coverage of macro base station for this.Destination address by the initial network entry message frame is set to multicast address, thereby both solved near to determine whether to exist, exist the STA which communication equipment problem, avoid blindly scanning to cause the electric weight waste of STA, can may receive the response message frame that a large amount of communication equipments returns by having dwindled response range to avoid blindly sending broadcast message frame as much as possible again, avoid consequent conflict, thereby be conducive to shorten the network switching time of this STA.
In technique scheme, preferably, when the actual address of distributing as described destination address and described recipient is inequality, do not respond described initial network entry message frame.
In this technical scheme, when destination address (multicast address) and actual address do not match, illustrate that this initial network entry message frame is not to send to self, then no longer carry out parse operation, abandon this message frame, and do not return response message frame.Therefore, be the initial network entry message frame of destination address by sending multicast address, then can avoid a lot of incoherent access points to return response frame to transmit leg, thereby avoid too much message sink to cause producing conflict at transmit leg.
In technique scheme, preferably, described initial network entry message frame is probe request, handover request message frame or changes the request message frame fast that described response message frame is probing response frame, handoff response frame or quick transition response frame.
In this technical scheme, be in a certain network if STA is current, in the 3GPP network, wlan network to the communication equipment correspondence switches, under the prerequisite of the multicast address that obtains the communication equipment under the 3GPP macro base station institute coverage, can send probe request, handover request message frame or change the request message frame fast, wherein the destination address of these frames be the multicast address that obtains in advance.Than broadcast message frame, by the application be the claim frame of destination address with the multicast address, thereby strengthened the transmission purpose of claim frame, also avoided the transmit leg of claim frame to receive too much response frame, prevent the conflict.
In technique scheme, preferably, before receiving described initial network entry message frame, also comprise: obtain the actual address of described distribution, described actual address is the medium access control address of unified distribution.
In this technical scheme, combine by the actual address with a plurality of access points, thereby form unique multicast address of these access points (being the communication equipment in this programme), so that the transmit leg of claim frame (being the initial network entry message frame) specifies these access points as the recipient of initial network entry message frame simultaneously.Particularly, multicast address can be the same with the form of MAC Address, is 48 bits, can certainly be other number of bits length.
In technique scheme, preferably, also comprise: the medium access control multicast address that described actual address is distributed for unified mechanism.
In this technical scheme, such as for the 3GPP network, access point in service macro base station under this network and the coverage of this service macro base station is managed by unified mechanism, unify mechanism such as this and can be OAM, then this unification mechanism is after distributing unitedly the unique address of the access point in the coverage of service macro base station, can directly allocation result be informed all access points (being the communication equipment in this programme) in service macro base station and the service macro base station coverage, thus convenient handover management to 3GPP network and WALN network.
By above technical scheme, can make in the active scan process of communication equipment when carrying out the network switching, make that as much as possible the transmission target of request message frame is more accurate, thereby avoid blindly sending the electric weight waste that causes, and receive too much response message frame simultaneously and the message collision that causes.
Description of drawings
Fig. 1 shows a kind of block diagram of communication equipment according to an embodiment of the invention;
Fig. 2 is the flow chart of the wireless communications method of communication equipment correspondence shown in Figure 1;
Fig. 3 shows the block diagram of another kind of communication equipment according to an embodiment of the invention;
Fig. 4 is the flow chart of the wireless communications method of communication equipment correspondence shown in Figure 3;
Fig. 5 shows the particular flow sheet of method for switching network according to an embodiment of the invention.
Embodiment
In order more to be expressly understood above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments the present invention is further described in detail.Need to prove that under the situation of not conflicting, the application's embodiment and the feature among the embodiment can make up mutually.
A lot of details have been set forth in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not subjected to the restriction of following public specific embodiment.
Fig. 1 shows a kind of block diagram of communication equipment according to an embodiment of the invention.
As shown in Figure 1, a kind of according to an embodiment of the invention communication equipment 100, comprise: data processing module 102, generate the initial network entry message frame, described initial network entry message frame comprises destination address at least, described destination address is multicast address, and described multicast address is the unique address of unified distribution of recipient's correspondence of described initial network entry message frame; Data interaction module 104 sends described initial network entry message frame.
In this technical scheme, communication equipment 100 can be mobile phone or flat board, and data processing module 102 can be the chip module that data are handled in the communication equipment, and data interaction module 104 then is equivalent to signal receiving/transmission device and antenna etc.Communication equipment 100 can be to be under certain network, such as being under the 3GPP network, before sending the initial network entry message frame, wishes to switch to another network, such as wlan network from the 3GPP network.Particularly, such as current certain the service macro base stations that are under the 3GPP network of communication equipment 100, then multicast address can be served all or a plurality of access point corresponding address in the coverage of macro base station for this.Destination address by the initial network entry message frame is set to multicast address, thereby both solved near the problem that whether has, exists which access point determining, avoid blindly scanning to cause the electric weight waste of communication equipment, can may receive a large amount of response message frame by having dwindled response range to avoid blindly sending broadcast message frame as much as possible again, avoid consequent conflict, thereby be conducive to shorten the network switching time of this communication equipment.
In technique scheme, preferably, described initial network entry message frame is probe request, handover request message frame or changes the request message frame fast.
In this technical scheme, be in a certain network if communication equipment 100 is current, in the 3GPP network, switch to wlan network, under the prerequisite of the multicast address that obtains the access point (AP) under the 3GPP macro base station institute coverage, can send probe request, handover request message frame or change the request message frame fast, wherein the destination address of these frames be the multicast address that obtains in advance.
In technique scheme, preferably, before generating described initial network entry message frame, described data interaction module 104 is also obtained the unique address of unified distribution of recipient's correspondence of described initial network entry message frame.
In this technical scheme, communication equipment 100 has at first been set up relatedly with a certain wireless network, will set up related with other wireless network for a certain reason.Such as having set up related when communication equipment 100 with 3GPP, before switching to wlan network, then can be by the multicast address of all access points in its coverage of service macro base station acquisition request of this 3GPP network correspondence, the multicast address of these access points is unique.Particularly, communication equipment 100 can send the multicast address demand signalling to the service macro base station, then serves macro base station by returning response signaling, or by data transmission manner, to realize the feedback to multicast address.
In technique scheme, preferably, the unique address of the described unified distribution that described data interaction module 104 is obtained is the recipient's of described initial network entry message frame medium access control system (MAC) address.
In this technical scheme, combine by the actual address with a plurality of access points, thereby form unique multicast address of these access points, so that communication equipment 100 specifies these access points as the recipient of initial network entry message frame simultaneously.Particularly, multicast address can be the same with the form of MAC Address, is 48 bits, can certainly be other number of bits length.
In technique scheme, preferably, the medium access control multicast address that the recipient that the unique address of the described unified distribution that described data interaction module 104 is obtained is described initial velocity networking message frame for unified mechanism distributes.
In this technical scheme, such as for the 3GPP network, access point in service macro base station under this network and the coverage of this service macro base station is managed by unified mechanism, unify mechanism such as this and can be OAM, then this unification mechanism is after distributing unitedly the unique address of the access point in the coverage of service macro base station, can directly allocation result be informed all access points in service macro base station and the service macro base station coverage, thus convenient handover management to 3GPP network and WALN network.
Fig. 2 is the flow chart of the wireless communications method of communication equipment correspondence shown in Figure 1.
As shown in Figure 2, the wireless communications method of communication equipment 100 correspondences shown in Figure 1, comprise: step 202, generate the initial network entry message frame, described initial network entry message frame comprises destination address at least, described destination address is multicast address, and described multicast address is the unique address of unified distribution of recipient's correspondence of described initial network entry message frame; Step 204 sends described initial network entry message frame.
In this technical scheme, this communication equipment 100 has been under certain network, such as being under the 3GPP network, before sending the initial network entry message frame, wishes to switch to another network, such as wlan network from the 3GPP network.Communication equipment 100 can be mobile phone or flat board.Particularly, such as current certain the service macro base stations that are under the 3GPP network of communication equipment 100, then multicast address can be served all or a plurality of access point corresponding address in the coverage of macro base station for this.Destination address by the initial network entry message frame is set to multicast address, thereby both solved near the problem that whether has, exists which access point determining, avoid blindly scanning to cause the electric weight waste of communication equipment, can may receive a large amount of response message frame by having dwindled response range to avoid blindly sending broadcast message frame as much as possible again, avoid consequent conflict, thereby be conducive to shorten the network switching time of this communication equipment 100.
In technique scheme, preferably, described initial network entry message frame is probe request, handover request message frame or changes the request message frame fast.
In this technical scheme, be in a certain network if communication equipment 100 is current, in the 3GPP network, switch to wlan network, under the prerequisite of the multicast address that obtains the access point (AP) under the 3GPP macro base station institute coverage, can send probe request, handover request message frame or change the request message frame fast, wherein the destination address of these frames be the multicast address that obtains in advance.
In technique scheme, preferably, before generating described initial network entry message frame, also comprise: the unique address of unified distribution that obtains recipient's correspondence of described initial network entry message frame.
In this technical scheme, communication equipment 100 has at first been set up relatedly with a certain wireless network, will set up related with other wireless network for a certain reason.Such as having set up related when communication equipment 100 with the 3GPP network, before switching to wlan network, then can be by the multicast address of all access points in its coverage of service macro base station acquisition request of this 3GPP network correspondence, the multicast address of these access points is unique.Particularly, communication equipment 100 can send the multicast address demand signalling to the service macro base station, then serves macro base station by returning response signaling, or by data transmission manner, to realize the feedback to multicast address.
In technique scheme, preferably, the unique address of described unified distribution is the recipient's of described initial network entry message frame medium access control system (MAC) address.
In this technical scheme, combine by the actual address with a plurality of access points, thereby form unique multicast address of these access points, so that communication equipment 100 specifies these access points as the recipient of initial network entry message frame simultaneously.Particularly, multicast address can be the same with the form of MAC Address, is 48 bits, can certainly be other number of bits length.
In technique scheme, preferably, the medium access control multicast address that the recipient that the unique address of described unified distribution is described initial velocity networking message frame for unified mechanism distributes.
In this technical scheme, such as for the 3GPP network, access point in service macro base station under this network and the coverage of this service macro base station is managed by unified mechanism, unify mechanism such as this and can be OAM, then this unification mechanism is after distributing unitedly the unique address of the access point in the coverage of service macro base station, can directly allocation result be informed all access points in service macro base station and the service macro base station coverage, thus convenient handover management to 3GPP network and WALN network.
Fig. 3 shows the block diagram of another kind of communication equipment according to an embodiment of the invention.
As shown in Figure 3, another kind of according to an embodiment of the invention communication equipment 300, comprise: data interaction module 302, receive the initial network entry message frame, and the response message frame that sends described initial network entry message frame, described initial network entry message frame comprises destination address at least, and described destination address is multicast address; Data processing module 304 under the identical situation of actual address that described multicast address and described communication equipment are assigned with, generates the response message frame of described initial network entry message frame.
In this technical scheme, communication equipment 300 can be router, and data processing module 304 can be the chip module that data are handled in the communication equipment 300, and data interaction module 302 then is equivalent to signal receiving/transmission device and antenna etc.When receiving the initial network entry message frame, communication equipment 300 should parse its destination address at least, if this destination address is multicast address, should determine then whether this multicast address and the address of self are complementary, if coupling, then should return the corresponding response message frame, to realize and being connected of the transmit leg of this initial network entry message frame.Particularly, the STA that sends above-mentioned initial network entry message frame can be under certain network, such as being under the 3GPP network, before sending the initial network entry message frame, hope switches to another network from the 3GPP network, such as the wlan network of herein communication equipment 300 correspondences.Particularly, such as current certain the service macro base station that is under the 3GPP network of STA, then multicast address can be served all or a plurality of communication equipment 300 corresponding address in the coverage of macro base station for this.Destination address by the initial network entry message frame is set to multicast address, thereby both solved near to determine whether to exist, exist the STA which communication equipment 300 problem, avoid blindly scanning to cause the electric weight waste of STA, can may receive the response message frame that a large amount of communication equipment 300 returns by having dwindled response range to avoid blindly sending broadcast message frame as much as possible again, avoid consequent conflict, thereby be conducive to shorten the network switching time of this STA.
In technique scheme, preferably, under the actual address that described data processing module 304 distributes described destination address and the described recipient situation inequality, do not respond described initial network entry message frame.
In this technical scheme, when destination address (multicast address) and actual address do not match, illustrate that this initial network entry message frame is not to send to self, then no longer carry out parse operation, abandon this message frame, and do not return response message frame.Therefore, be the initial network entry message frame of destination address by sending multicast address, then can avoid a lot of incoherent access points to return response frame to transmit leg, thereby avoid too much message sink to cause producing conflict at transmit leg.
In technique scheme, preferably, the described initial network entry message frame that described data interaction module 302 receives is probe request, handover request message frame or changes the request message frame fast that described response message frame is probing response frame, handoff response frame or quick transition response frame.
In this technical scheme, be in a certain network if STA is current, in the 3GPP network, wlan network to communication equipment 300 correspondences switches, under the prerequisite of the multicast address that obtains the communication equipment 300 under the 3GPP macro base station institute coverage, can send probe request, handover request message frame or change the request message frame fast, wherein the destination address of these frames be the multicast address that obtains in advance.Than broadcast message frame, by the application be the claim frame of destination address with the multicast address, thereby strengthened the transmission purpose of claim frame, also avoided the transmit leg of claim frame to receive too much response frame, prevent the conflict.
In technique scheme, preferably, described data interaction module 302 was obtained the actual address of described distribution before receiving described initial network entry message frame, and described actual address is the medium access control address of unified distribution.
In this technical scheme, combine by the actual address with a plurality of access points, thereby form unique multicast address of these access points (being the communication equipment 300 in this programme), so that the transmit leg of claim frame (being the initial network entry message frame) specifies these access points as the recipient of initial network entry message frame simultaneously.Particularly, multicast address can be the same with the form of MAC Address, is 48 bits, can certainly be other number of bits length.
In technique scheme, preferably, also comprise: the medium access control multicast address that described actual address is distributed for unified mechanism.
In this technical scheme, such as for the 3GPP network, access point in service macro base station under this network and the coverage of this service macro base station is managed by unified mechanism, unify mechanism such as this and can be OAM, then this unification mechanism is after distributing unitedly the unique address of the access point in the coverage of service macro base station, can directly allocation result be informed all access points (being the communication equipment 300 in this programme) in service macro base station and the service macro base station coverage, thus convenient handover management to 3GPP network and WALN network.
Fig. 4 is the flow chart of the wireless communications method of communication equipment correspondence shown in Figure 3.
As shown in Figure 4, the wireless communications method of communication equipment 300 correspondences shown in Figure 3 comprises:
Step 402 receives the initial network entry message frame, and described initial network entry message frame comprises destination address at least, and described destination address is multicast address.
Step 404 when the actual address that is assigned with as described multicast address and the recipient of described initial network entry message frame is identical, enters step 406, otherwise enters step 408.
Step 408 does not respond described initial network entry message frame, such as directly abandoning described initial network entry message frame.
In this technical scheme, communication equipment 300 can be router.When receiving the initial network entry message frame, communication equipment 300 should parse its destination address at least, if this destination address is multicast address, should determine then whether this multicast address and the address of self are complementary, if coupling, then should return the corresponding response message frame, to realize and being connected of the transmit leg of this initial network entry message frame.When destination address (multicast address) and actual address do not match, illustrate that this initial network entry message frame is not to send to self, then no longer carry out parse operation, abandon this message frame, and do not return response message frame.Therefore, be the initial network entry message frame of destination address by sending multicast address, then can avoid a lot of incoherent access points to return response frame to transmit leg, thereby avoid too much message sink to cause producing conflict at transmit leg.Particularly, the STA that sends above-mentioned initial network entry message frame can be under certain network, such as being under the 3GPP network, before sending the initial network entry message frame, hope switches to another network from the 3GPP network, such as the wlan network of herein communication equipment 300 correspondences.Particularly, such as current certain the service macro base station that is under the 3GPP network of STA, then multicast address can be served all or a plurality of communication equipment 300 corresponding address in the coverage of macro base station for this.Destination address by the initial network entry message frame is set to multicast address, thereby both solved near to determine whether to exist, exist the STA which communication equipment 300 problem, avoid blindly scanning to cause the electric weight waste of STA, can may receive the response message frame that a large amount of communication equipment 300 returns by having dwindled response range to avoid blindly sending broadcast message frame as much as possible again, avoid consequent conflict, thereby be conducive to shorten the network switching time of this STA.
In technique scheme, preferably, described initial network entry message frame is probe request, handover request message frame or changes the request message frame fast that described response message frame is probing response frame, handoff response frame or quick transition response frame.
In this technical scheme, be in a certain network if STA is current, in the 3GPP network, wlan network to communication equipment 300 correspondences switches, under the prerequisite of the multicast address that obtains the communication equipment 300 under the 3GPP macro base station institute coverage, can send probe request, handover request message frame or change the request message frame fast, wherein the destination address of these frames be the multicast address that obtains in advance.Than broadcast message frame, by the application be the claim frame of destination address with the multicast address, thereby strengthened the transmission purpose of claim frame, also avoided the transmit leg of claim frame to receive too much response frame, prevent the conflict.
In technique scheme, preferably, before receiving described initial network entry message frame, also comprise: obtain the actual address of described distribution, described actual address is the medium access control address of unified distribution.
In this technical scheme, combine by the actual address with a plurality of access points, thereby form unique multicast address of these access points (being the communication equipment 300 in this programme), so that the transmit leg of claim frame (being the initial network entry message frame) specifies these access points as the recipient of initial network entry message frame simultaneously.Particularly, multicast address can be the same with the form of MAC Address, is 48 bits, can certainly be other number of bits length.
In technique scheme, preferably, also comprise: the medium access control multicast address that described actual address is distributed for unified mechanism.
In this technical scheme, such as for the 3GPP network, access point in service macro base station under this network and the coverage of this service macro base station is managed by unified mechanism, unify mechanism such as this and can be OAM, then this unification mechanism is after distributing unitedly the unique address of the access point in the coverage of service macro base station, can directly allocation result be informed all access points (being the communication equipment 300 in this programme) in service macro base station and the service macro base station coverage, thus convenient handover management to 3GPP network and WALN network.
Fig. 5 shows the particular flow sheet of method for switching network according to an embodiment of the invention.
As shown in Figure 5, suppose under the terminal 502 current 3GPP of the being connected networks, and base station 506 is the service macro base station of terminal 502.AP504 is all AP(under the coverage of base station 506 or a plurality of AP wherein), such as AP1, AP2 ... APn etc., and terminal 502 wishes to switch to certain AP among the AP504 by base station 506.Because terminal 502 does not also know whether there is and exists which AP near it, therefore, need to carry out drive sweep or active scan, with realize to the discovery of AP be connected.
When technical scheme according to the present invention was carried out active scan, the idiographic flow of its scanner uni method for switching network comprised:
Step 1: the distribution of multicast address
Suppose that base station 506 is macro base station, covering radius probably is 1Km, and the covering radius of AP is about 100m, and then may have a plurality of AP(in the coverage of base station 506 is AP504).Wherein, base station 506 and AP504 are managed by unified mechanism, and this mechanism is server 508, is specifically as follows OAM.
Server 508 distributes the multicast address of unique correspondence for each AP among the AP504, and allocation result is informed AP504 and base station 506.Particularly, server 508 can utilize the MAC Address of each AP, generates the multicast address of above-mentioned unique correspondence.
Step 2: the obtaining of multicast address
Terminal 502 is 506 initiation requests to the base station, to obtain the multicast address of the AP504 under 506 coverages of base station.Particularly, can obtain claim frame by 506 transmission multicast address to the base station such as terminal 502, then corresponding feedback can be carried out according to the type of this request in base station 506.
Step 3: the feedback of multicast address
When base station 506 receives the request of terminal 502, obtain claim frame such as above-mentioned multicast address, then the multicast address that server 508 is informed feeds back to terminal 502.Particularly, base station 506 can be by returning the response frame that multicast address obtains claim frame, and multicast address is added in this response frame, to feed back to terminal 502; Perhaps, data transmission manner can be passed through in base station 506, and multicast address is transferred to terminal 502, to realize feedback.
Step 4: confirmation of receipt
Terminal 502 is 506 transmission acknowledge message frames to the base station, to confirm to have received the multicast address of base station 506 feedbacks.
Step 5: send probe request
Terminal 502 generates probe request, and the destination address of this probe request is the multicast address of base station 506 feedbacks.Because the probe request that terminal 502 sends no longer is broadcast message frame, thereby has realized:
On the one hand, destination address is multicast address, and terminal 502 is no longer blindly carried out scanning, is conducive to terminal 502 and saves electric weight.
On the other hand, even if a lot of AP has received this probe request, but it is unmatched for the multicast address in himself address and the probe request, this AP just can not continue to resolve to this probe request, just can not respond it yet, thereby improve the purpose that probe request sends, reduced the possibility that receives a lot of response frames simultaneously, avoid producing conflict, be conducive to shorten the time of terminal 502 handover networks, improve switching efficiency.
Step 6:AP returns probing response frame
Suppose AP2 among the AP504 be in terminal 502 near, and received above-mentioned probe request.Because the destination address in the probe request, namely the address of multicast address and AP2 is complementary, thereby AP2 finished the parsing to probe request, and has returned corresponding probing response frame.
Suppose that APm also is near the terminal 502, but APm does not belong to AP504, then after APm receives the probe request of terminal 502 transmissions, resolve by the destination address to this probe request, when judging this destination address (being above-mentioned multicast address) and not matching with self address, then no longer continue to resolve, abandon this probe request, and can not feed back it.
Step 7: network switches
Terminal 502 has been finished the switching (Handover) before 3GPP network and wlan network, and has been carried out the initial connection of WALN network according to the probing response frame from AP2 that receives.
More than being described with reference to the accompanying drawings technical scheme of the present invention, having considered in the correlation technique, is blindly for the scanning of access point, has caused the waste of terminal power, and may produce conflict owing to receiving a large amount of response frames.Therefore, the present invention proposes new communication equipment and wireless communications method, can make in the active scan process of communication equipment when carrying out the network switching, make that as much as possible the transmission target of request message frame is more accurate, thereby avoid blindly sending the electric weight waste that causes, and receive too much response message frame simultaneously and the message collision that causes.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (20)
1. a communication equipment is characterized in that, comprising:
Data processing module generates the initial network entry message frame, and described initial network entry message frame comprises destination address at least, and described destination address is multicast address, and described multicast address is the unique address of unified distribution of recipient's correspondence of described initial network entry message frame;
The data interaction module sends described initial network entry message frame.
2. communication equipment according to claim 1 is characterized in that, described initial network entry message frame is probe request, handover request message frame or changes the request message frame fast.
3. communication equipment according to claim 1 and 2 is characterized in that, before generating described initial network entry message frame, described data interaction module is also obtained the unique address of unified distribution of recipient's correspondence of described initial network entry message frame.
4. communication equipment according to claim 3 is characterized in that, the unique address of the described unified distribution that described data interaction module is obtained is the recipient's of described initial network entry message frame medium access control system (MAC) address.
5. communication equipment according to claim 4 is characterized in that, the medium access control multicast address that the recipient that the unique address of the described unified distribution that described data interaction module is obtained is described initial velocity networking message frame for unified mechanism distributes.
6. a wireless communications method is characterized in that, comprising:
Generate the initial network entry message frame, described initial network entry message frame comprises destination address at least, and described destination address is multicast address, and described multicast address is the unique address of unified distribution of recipient's correspondence of described initial network entry message frame;
Send described initial network entry message frame.
7. wireless communications method according to claim 6 is characterized in that, described initial network entry message frame is probe request, handover request message frame or changes the request message frame fast.
8. according to claim 6 or 7 described wireless communications methods, it is characterized in that, before generating described initial network entry message frame, also comprise:
Obtain the unique address of unified distribution of recipient's correspondence of described initial network entry message frame.
9. wireless communications method according to claim 8 is characterized in that, the unique address of described unified distribution is the recipient's of described initial network entry message frame medium access control system (MAC) address.
10. wireless communications method according to claim 9 is characterized in that, the medium access control multicast address that the recipient that the unique address of described unified distribution is described initial velocity networking message frame for unified mechanism distributes.
11. a communication equipment is characterized in that, comprising:
The data interaction module receives the initial network entry message frame, and the response message frame that sends described initial network entry message frame, and described initial network entry message frame comprises destination address at least, and described destination address is multicast address;
Data processing module under the identical situation of actual address that described multicast address and described communication equipment are assigned with, generates the response message frame of described initial network entry message frame.
12. communication equipment according to claim 11 is characterized in that, under the actual address that described data processing module distributes described destination address and the described recipient situation inequality, does not respond described initial network entry message frame.
13. according to claim 11 or 12 described communication equipments, it is characterized in that, the described initial network entry message frame that described data interaction module receives is probe request, handover request message frame or changes the request message frame fast that described response message frame is probing response frame, handoff response frame or quick transition response frame.
14., it is characterized in that described data interaction module was obtained the actual address of described distribution according to claim 11 or 12 described communication equipments before receiving described initial network entry message frame, described actual address is the medium access control address of unified distribution.
15. communication equipment according to claim 14 is characterized in that, also comprises: the medium access control multicast address that described actual address is distributed for unified mechanism.
16. a wireless communications method is characterized in that, comprising:
Receive the initial network entry message frame, described initial network entry message frame comprises destination address at least, and described destination address is multicast address;
When the actual address that is assigned with as described multicast address and the recipient of described initial network entry message frame was identical, the response message frame that generates and sends described initial network entry message frame was given the transmit leg of described initial network entry message frame.
17. wireless communications method according to claim 16 is characterized in that, also comprises:
When the actual address of distributing as described destination address and described recipient is inequality, do not respond described initial network entry message frame.
18. according to claim 16 or 17 described wireless communications methods, it is characterized in that, described initial network entry message frame is probe request, handover request message frame or changes the request message frame fast that described response message frame is probing response frame, handoff response frame or quick transition response frame.
19. according to claim 16 or 17 described wireless communications methods, it is characterized in that, before receiving described initial network entry message frame, also comprise:
Obtain the actual address of described distribution, described actual address is the medium access control address of unified distribution.
20. wireless communications method according to claim 19 is characterized in that, also comprises: the medium access control multicast address that described actual address is distributed for unified mechanism.
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