CN100502552C - Relay apparatus and system for implementing fast switching - Google Patents

Relay apparatus and system for implementing fast switching Download PDF

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Publication number
CN100502552C
CN100502552C CNB200510082808XA CN200510082808A CN100502552C CN 100502552 C CN100502552 C CN 100502552C CN B200510082808X A CNB200510082808X A CN B200510082808XA CN 200510082808 A CN200510082808 A CN 200510082808A CN 100502552 C CN100502552 C CN 100502552C
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base station
processing unit
wireless
transferring equipment
layer
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CN1863379A (en
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郑若滨
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to PCT/CN2006/001526 priority patent/WO2007003130A1/en
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Abstract

This invention relates to a transfer device and a system for realizing swift switch, which introduces a transfer user station with a transfer function, a radio transfer base station, a wire transfer base station and/or a wire-wireless combined transfer base station in the radio access network so as to realize the reliable communication between base stations before and after switch in the radio access network, which can not only reduce the switch delay of the radio communication system to increase communication efficiency but also can secure the continuous process of the switch by said transfer device when the connection of R8 of the adjacent base stations fails.

Description

The system that transferring equipment and realization are switched fast
Technical field
The present invention relates to wireless communication technology field, the system that relates in particular to a kind of transferring equipment and realize switching fast.
Background technology
IEEE 802.16 is first broadband wireless access standard, and this standard mainly comprises two versions: one is the broadband fixed wireless access version of 802.16 standards, is called for short " 16d "; Another is the broadband mobile wireless access version of 802.16 standards, is called for short " 16e ".Described standard has only defined the physical layer and the data link layer of base station and subscriber station, and described data link layer is called the MAC layer again.The MAC layer is divided into the specific convergence sub-layer of service, MAC common part sublayer again and encrypts the sublayer.
WiMAX Forum NWG (global inserting of microwave forum network work group) has then defined the network based on IEEE 802.16.
Forming of WiMAX Forum NWG definition based on the network of IEEE 802.16 ASN (Access Network) and CSN (CSN) by the WiMAX system.Wherein, ASN can receive the unification of WiMAX base station ASN GW (ASN gateway) and constitute centralized WiMAX Access Network, as shown in Figure 1; Also can only constitute distributed WiMAX Access Network by the WiMAX base station, at this moment, for there not being the situation of ASNGW among Fig. 1.
Reference point between the WiMAX base station is defined as R8, can do the sub-district by R8 between adjacent base station and switch; Reference point between WiMAX base station and ASN GW is defined as R6, and the reference point between ASN and CSN is defined as R3.
Definition according to 802.16 standards, 802.16 system configuration as shown in Figure 2, its base station only can link to each other with wireless with SS (subscriber station), so the interconnection between the base station at present only can be by wired realization in the WiMAX network architecture, when base station number was big, wired connection will be quite complicated.
When adjacent base station can't be supported the R8 wired connection, for example two adjacent base stations are in different island respectively, or the R8 wired connection fault of its adjacent base station, then can't support R8 to switch.At this moment, for centralized WiMAX Access Network, must adopt R6 to switch between adjacent base station; For distributed WiMAX Access Network, then must adopt R3 to switch between adjacent base station.Because R6 path, especially R3 path can be complicated more than the R8 path, these two kinds switch replacement scheme and will cause handoff delay bigger.
In addition,,, do not define the reference point between the base station of similar R8, then can only be similar to the switching of R6 or R3, cause handoff delay bigger, had a strong impact on the communication performance of wireless communication system as GSM or 3G for other wireless network.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the system that the purpose of this invention is to provide a kind of transferring equipment and realize switching fast, thus guaranteeing that user terminal can be implemented between the adjacent base station apace in the Radio Access Network switches.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides a kind of transferring equipment, comprising:
Transmission processing unit: can be respectively set up and communicate by letter with one group of base station equipment, and and each base station equipment between carry out information alternately, and this transmission processing unit comprises:
Physical layer transmission unit:, and can communicate with the physical layer transmission unit in the base station of this physical layer transmission unit communication respectively with the data link layer transmission unit;
The data link layer transmission unit: by the physical layer transmission unit in this transferring equipment and can and this transferring equipment in the base station of physical layer transmission unit communication between communicate;
This transferring equipment also comprises crosspoint: be used for signal that the base station equipment that transmission processing unit receives is sent, by passing
Defeated processing unit sends to relevant base station equipment, and described data link layer transmission unit is communicated by letter with other data link layer transmission units in the described transferring equipment by crosspoint.
Described transmission processing unit comprises: wireless transmission processing unit and/or wire transmission processing unit.
Described crosspoint is connected between physical layer transmission unit and the data link layer transmission unit, perhaps being arranged at data link layer only is connected with the data link layer transmission unit, perhaps, can also be arranged at that data link layer is above to be connected with the processing unit of equivalent layer.
Described transferring equipment also comprises:
The subscriber station processing unit: user terminal is by communicating between this subscriber station processing unit and wireless transmission processing unit and the base station, and/or the subscriber station processing unit is directly by communicating between wireless transmission processing unit and the base station;
Perhaps,
Base station processing unit: by communicating between this base station processing unit and Wireless/wired transmission processing unit and the subscriber station.
Among the present invention, when comprising base station processing unit in this transferring equipment, described crosspoint is also by the base station communication in wire transmission processing unit and the communications cable and the system.
The present invention also provides a kind of system of switching fast of realizing, comprises above-mentioned transferring equipment, and user terminal switch before and switch after the base station, before the described switching and between the base station after switching by the transferring equipment interconnected communication.
In the described system, when comprising base station processing unit in the described transferring equipment, then described transferring equipment also with system in subscriber station communicate by wireless connections, and also comprise in the described transferring equipment and be used for the wire transmission processing unit that is connected with upper level equipment.
In the described system, in described transferring equipment, comprise the subscriber station processing unit, then described transferring equipment also with system in user terminal communicate by letter by wireless connections.
Described transferring equipment respectively with two pattern is identical but communicate by letter by wireless connections in base station that application band is different, perhaps, with two base station communications with time-sharing work frequently, perhaps, with two base station communications of working in frequency range by the enough directional antennas of different subchannels, sub carrier group or isolation.
Described transferring equipment is fixed or is moved and is arranged in the wireless communication system.
The transfer net of forming with any topological structure by a plurality of transferring equipment between the base station in the system that described realization is switched fast carries out intercommunication.
As seen from the above technical solution provided by the invention, realize the handover information interaction process of user terminal between different base station by transferring equipment among the present invention based on wireless transmission, thereby effectively reduce handoff delay in the wireless communication system, improved the efficient of wireless communication system.
Simultaneously, the present invention can also be when the R8 of adjacent base station wired connection breaks down, can also by described transferring equipment guarantee handoff procedure continue carry out, thereby can effectively improve the communication reliability of wireless communication system.
Description of drawings
Fig. 1 is the Radio Access Network structural representation;
Fig. 2 is the syndeton schematic diagram between base station and the subscriber station;
Fig. 3 is for introducing the Radio Access Network structural representation of RSS;
Fig. 4 is two transceiver layer two RSS structural representation;
Fig. 5 is single-transceiver layer two a RSS structural representation;
Fig. 6 is two transceiver layer one RSS structural representation;
Fig. 7 is single-transceiver layer one a RSS structural representation;
Fig. 8 is for introducing Radio Access Network structural representation Fig. 1 of wireless RBS;
Fig. 9 is for introducing Radio Access Network structural representation Fig. 2 of wireless RBS;
Figure 10 is multi-transceiver layer two a RBS structural representation;
Figure 11 is single-transceiver layer two a RBS structural representation;
Figure 12 is multi-transceiver layer one a RBS structural representation;
Figure 13 is single-transceiver layer one a RBS structural representation;
Figure 14 is for introducing the Radio Access Network structural representation of wired RBS;
Figure 15 is layer two wired RBS structural representation;
Figure 16 is layer one wired RBS structural representation;
Figure 17 is for introducing Radio Access Network structural representation Fig. 1 of the comprehensive RBS of wire and wireless;
Figure 18 is for introducing Radio Access Network structural representation Fig. 2 of the comprehensive RBS of wire and wireless;
Figure 19 is structural representation Fig. 1 of the comprehensive RBS of layer two wire and wireless;
Figure 20 is structural representation Fig. 2 of the comprehensive RBS of layer two wire and wireless.
Embodiment
Core of the present invention is to introduce transferring equipment in Radio Access Network, thereby makes can reliably realize hand-off process in time between adjacent base station in Radio Access Network.
Specifically, be in Radio Access Network, to introduce subscriber station (the RelaySubscriber Station that has middle rotating function, be abbreviated as RSS) or have in the base station (Relay BaseStation is abbreviated as RBS) of rotating function, solve the hand-off process problem between neighbor base station.For example, solve when adjacent base station and can't support wired connection, or during the wired connection fault of adjacent base station, the problem that the handoff delay that may cause is bigger.
When transferring equipment provided by the invention when comprising the wireless transmission processing unit, realization of the present invention can also solve when base station number is big, also can simplify wired connection between the base station.
Below in conjunction with practical application the present invention is described in further detail.
At first, in wireless network architecture, to introduce the transfer subscriber station that has middle rotating function, support that the wireless connections between adjacent base station are that the present invention will be described for example.
As shown in Figure 3, when portable terminal SS2 entered base station BS 1 sub-district by base station BS 2 sub-districts, SS2 can set up the R8 path by transfer subscriber station RSS1, switched thereby finish R8.Also can introduce multi-hop RSS between adjacent base station and set up the R8 path.Also can introduce one between adjacent base station and set up the R8 path with the randomly topologically structured transfer net of forming by a plurality of RSS.
RSS can also be used for the subscriber station outside the access base station coverage, and with the access radius of extended base station, for example, referring to Fig. 3, SS3 is in outside the coverage of BS3, but SS3 is inserted BS3 by RSS2.
The subscriber station of rotating function can be fixed in having, and also can move, and itself can be used as subscriber station.The network insertion of the subscriber station of rotating function and initialization procedure and domestic consumer station can be identical in having.
RSS among the present invention can be layer one terminal, can be layer two terminal, or even layer three or layer three above terminal.
Described RSS mainly is made up of a crosspoint and one or two transceiver, and described transceiver is the wireless transmission processing unit, specifically comprises radio physical layer transmission unit and wireless data link layer transmission unit.The crosspoint of RSS is used between exchanges data (to support rotating function), base station (or RBS) and subscriber station between different base station (or RBS) and the exchanges data between base station (or subscriber station) and user.
RSS adopts two transceivers to support BS1 (or RBS) and BS2 (or subscriber station) for being operated in the situation of different frequency range.
RSS adopts single transceiver to support BS1 (or RBS) and BS2 (or subscriber station) for being operated in the situation with frequency range.BS1 and BS2 can timesharing ground by different burst group (burst) or different frame (frame) with the RSS transceiver, communicating by letter with setting up under the frequency range; BS1 (or RBS) and BS2 (or subscriber station) also can work simultaneously, the RSS transceiver is by different subchannel (subchannel), subcarrier (subcarrier) group or enough directional antenna and BS1 (or RBS) and the BS2 (or subscriber station) of isolation, with intercommunication under the frequency range.
The structure of RSS described in the present invention such as Fig. 4 specifically comprise two couples of transceiver RSS of layer, layer two single-transceiver RSS, layer a pair of transceiver RSS and layer one single-transceiver RSS to shown in Figure 7, will illustrate accordingly respectively below.
(1) two pairs of transceiver RSS system configuration of layer are as shown in Figure 4:
It specifically comprises transceiver 1 and transceiver 2, and sets up radio communication with the base station BS 1 and the BS2 that switch front and back respectively.Under the application scenarios shown in Fig. 3, the data that user terminal is issued BS2 exchange to transceiver 2 by crosspoint, pass to BS2 by wireless channel again, and vice versa; After the handover-related message that BS2 issues BS1 then receives from transceiver 2, exchange to transceiver 1 by crosspoint, pass to BS1 by wireless channel again, vice versa.
(2) layer two single-transceiver RSS system configuration are as shown in Figure 5:
It only comprises transceiver 1, and the base station BS 1 before and after switching is set up with this transceiver 1 respectively with BS2 and communicated by letter, and at this moment, described crosspoint can be thought and is built in this transceiver.Be example with application scenarios shown in Figure 3 still, the data that user terminal is issued BS2 are given transceiver 1 after handling by the wireless data link layer, pass to BS2 by wireless channel again, and vice versa; After the handover-related message that BS2 issues BS1 then receives from transceiver 1, return to transceiver 1 after handling by the wireless data link layer, pass to BS1 by wireless channel again, vice versa.
(3) layer a pair of transceiver RSS system configuration as shown in Figure 6;
Encrypt the wireless data link layer of sublayer for band, encrypt the sublayer function and should peel off out from the wireless data link layer, place between crosspoint and the radio physical layer processing unit, reason be that crosspoint can only be handled expressly, can not handle ciphertext.The structure of described layer a pair of transceiver RSS comprises wireless receiver 1 and wireless receiver 2, and shared same wireless data link layer transmission unit of two receivers and telex network are communicated by letter but set up respectively with BS2 with BS1 before and after switching by different radio physical transport layers.Be example with application scenarios shown in Figure 3 still, the data that the user issues BS2 exchange to transceiver 2 by crosspoint, pass to BS2 by wireless channel again, and vice versa; After the handover-related message that BS2 issues BS1 then receives from transceiver 2, exchange to transceiver 1 by crosspoint, pass to BS1 by wireless channel again, vice versa.
(4) layer one single-transceiver RSS system configuration is as shown in Figure 7:
Encrypt the wireless data link layer of sublayer for band, encrypt the sublayer function and should peel off out from the wireless data link layer equally, place between crosspoint and the radio physical layer processing unit.Described layer one single-transceiver RSS only comprises transceiver 1, specifically comprise corresponding radio physical layer transmission unit and wireless data chain layer transmission unit, before switching and BS1 and BS2 after switching only carry out intercommunication by the radio physical layer transmission unit, corresponding crosspoint can think and be built in this radio physical layer transmission unit, realizes that BS1 and BS2's is straight-through.Under application scenarios shown in Figure 3, the data that the user issues BS2 are given transceiver 1 after handling by the wireless data link layer, pass to BS2 by wireless channel again, and vice versa; After the handover-related message that BS2 issues BS1 then receives from transceiver 1, by by transceiver 1, pass to BS1 by wireless channel again, vice versa.
Among the present invention, can also adopt layer three or layer three above RSS to realize the switching transfer, specifically can utilize layer three to do Route Selection,, can also do the communication filtration more than three of layer three or layer for reducing the unnecessary transfer flow or the consideration of safety factor.Its structure is similar with layer two RSS, and difference is that the transceiver of layer three or layer three above RSS has comprised radio physical layer, wireless data link layer and layer three or layer three above processing unit, and crosspoint is substituted by wireless routing unit.
Afterwards, in wireless network architecture, to introduce the transfer base station that has middle rotating function, support that the wireless connections between adjacent base station are that the present invention will be described for example again.
As shown in Figure 8, the present invention can also introduce the base station that has wireless middle rotating function in wireless network architecture, supports the wireless connections between adjacent base station.In Fig. 8, when portable terminal SS2 entered the BS1 sub-district by the BS2 sub-district, SS2 can set up the R8 path by wireless terminal RBS1, switched thereby finish R8.Also can introduce multi-hop wireless RBS between adjacent base station and set up the R8 path.Also can introduce one between adjacent base station and set up the R8 path with the randomly topologically structured transfer net of forming by a plurality of wireless RBS.
The subscriber station RSS of rotating function during base station BS 2 and having also can be introduced between the base station RBS of rotating function in wired and have, as shown in Figure 9.
The base station that has wireless middle rotating function can be fixed, and also can move, and itself can be used as the base station.Wireless RBS can be layer one terminal, can be layer two terminal, or even layer three or layer three above terminal.Wireless RBS also mainly is made up of a crosspoint and one or several transceivers.Wireless RBS crosspoint is used for exchanges data (to support rotating function) between different base station (or RBS) and the exchanges data between base station and subscriber station (or RSS).For centralized wireless network, wireless RBS also needs wired transmission processing unit to link to each other with upper level equipment through wired cable, and upper level equipment can be base station controller, or WiMAX access server (ASN GW).
Wireless RBS adopts many transceivers to support the subscriber station SSi (or RSSi) of each BSj (or RBSj) and RBS to be operated in the situation of different frequency range.
Wireless RBS adopts single transceiver to support the subscriber station Ssi (or RSSi) of each BSj (or RBSj) and RBS to be operated in the situation of similar frequency bands.BSi (or RBSi) inserts wireless RBS with the form of subscriber station; Each BSj (or RBSj) can timesharing ground by different burst group (burst) or different frame (frame) with the RBS transceiver, setting up reliable communication with under the frequency range; Each BSj (or RBSj) also can work simultaneously, the RBS transceiver is by different subchannel (subchannel), subcarrier (subcarrier) group, enough directional antenna or smart antenna and each BSi (or RBSi) of isolation, with intercommunication under the frequency range.
Can also there be the structure of comprehensive above-mentioned two kinds of situations in wireless RBS system: some transceivers are supported several base stations that are operated in similar frequency bands, and several transceiver supports several base stations that are operated in different frequency range in addition in addition.
The structure of wireless RBS described in the present invention such as Figure 10 specifically comprise layer two multi-transceiver RBS, layer two single-transceiver RBS, layer one multi-transceiver RBS and layer one single-transceiver RBS to shown in Figure 13, will illustrate accordingly respectively below.
(1) the wireless RBS system configuration of layer two multi-transceiver is as shown in figure 10:
Described RBS structure comprises: one group of transceiver and crosspoint, described one group of transceiver is used for and one group of base station and one group of subscriber station communications, described crosspoint is used between subscriber station and the base station, and the information between base station and the base station exchanges; Also comprise wired transmission processing unit among the described RBS, be used for and the upper level devices communicating.Under application scenarios shown in Figure 8, the SS of BS1 sends receive from transceiver 1 to the CSN data after, exchange to the wire transmission processing unit processes by crosspoint; After the handover-related message that BS2 issues BS1 then receives from transceiver 2, exchange to transceiver 1 by crosspoint, pass to BS1 by wireless channel again, vice versa.
(2) the wireless RBS system configuration of layer two single-transceiver is as shown in figure 11:
Among Figure 11, only comprise a transceiver in the structure of described RBS, comprise corresponding radio physical layer transmission unit and wireless data link layer transmission unit equally.Under scene shown in Figure 8, the SS of BS1 sends receive from transceiver 1 to the CSN data after, pass through radio physical layer transmission unit and wireless data chain layer transmission unit successively, and exchange to the wire transmission processing unit processes by crosspoint; After the handover-related message that BS2 issues BS1 then receives from transceiver 1, equally, pass through radio physical layer transmission unit and wireless data chain layer transmission unit successively, and exchange back transceiver 1 by crosspoint, pass to BS1 by wireless channel again, vice versa.
(3) the wireless RBS system configuration of layer one multi-transceiver is as shown in figure 12:
The structure of RBS described in Figure 12 comprises one group of transceiver, but different with RBS shown in Figure 10 be only to comprise a wireless data link layer transmission unit among this RBS.Under application scenarios shown in Figure 8, the SS of BS1 sends receive from transceiver 1 to the CSN data after, warp is the radio physical layer transmission unit accordingly, and exchanges to described wireless data link layer transmission unit by crosspoint, and the wire transmission processing unit processes; After the handover-related message that BS2 issues BS1 then receives from transceiver 2, exchange to transceiver 1 through radio physical layer transmission unit and crosspoint successively, pass to BS1 by wireless channel again, vice versa.
(4) the wireless RBS system configuration of layer one single-transceiver is as shown in figure 13:
RBS shown in Figure 13 only comprises a transceiver, and crosspoint is connected between radio physical layer transmission unit and the wireless data link layer transmission unit.Under application scenarios shown in Figure 8, the SS of BS1 sends receive from transceiver 1 to the CSN data after, exchange to the wire transmission processing unit processes by radio physical layer transmission unit, crosspoint and wireless data link layer transmission unit successively; After the handover-related message that BS2 issues BS1 then receives from transceiver 1, exchange back transceiver 1 by radio physical layer transmission unit and crosspoint successively, pass to BS1 by wireless channel again, vice versa.
Layer three or layer three or more wireless RBS can utilize layer three to do Route Selection, for reducing the unnecessary transfer flow or the consideration of safety factor, can also do the communication filtration more than three of layer three or layer.Its structure is similar with layer two RBS, and difference is that the transceiver of layer three or layer three above RBS has comprised radio physical layer, wireless data link layer and layer three or layer three above processing unit, and crosspoint is substituted by wireless routing unit.
In addition, the present invention can also introduce another base station that has middle rotating function in wireless network architecture, support the wired connection between adjacent base station.As shown in figure 14, when portable terminal SS entered the BS1 sub-district by the BS2 sub-district, SS can set up the R8 path by wired terminal RBS, switched thereby finish R8.Also can introduce the wired RBS of multi-hop between adjacent base station and set up the R8 path.Also can introduce one between adjacent base station and set up the R8 path with the randomly topologically structured transfer net of forming by what a plurality of wired RBS or wireless RBS or wired RBS mixed with wireless RBS and RSS.
The base station that has wired middle rotating function can be fixed, also can move, and itself be exactly the base station.Wired RBS can be layer one terminal, can be layer two terminal, or even layer three or layer three above terminal.Wired RBS also mainly is made up of a crosspoint, transceiver and several wired processing units.Wired RBS crosspoint is used for exchanges data (to support rotating function) between different base station (or RBS) and the exchanges data between base station and subscriber station (or RSS).For centralized wireless network, wired RBS also needs wired transmission processing unit to link to each other with upper level equipment through wired cable, and upper level equipment can be base station controller, or WiMAX access server (ASN GW).
The structure of wired RBS described in the present invention such as Figure 15 and shown in Figure 16 specifically comprise layer two wired RBS and layer one wired RBS, will illustrate accordingly respectively below.
(1) layer two wired RBS system configuration are as shown in figure 15:
The structure of RBS described in Figure 15 comprises: one group has line transceiver, transceiver and crosspoint, wherein said one group has line transceiver and one group of base station communication, intercommunication between the base station before and after under the exchange of crosspoint is handled, realizing switching, described crosspoint is connected between the wireless data link layer transmission unit of the cable data link layer transmission unit of line transceiver and transceiver, described transceiver is used for setting up radio communication with subscriber station, and by crosspoint and there is line transceiver to communicate by letter setting up between subscriber station and each base station; And also comprise the wire transmission processing unit that is connected with upper level equipment among the RBS, described upper level equipment can be CSN (connectivity serving network) equipment etc.
Under application scenarios shown in Figure 14, the SS of BS1 sends receive from wired transceiver 1 to the CSN data after, exchange to the wire transmission processing unit processes by wire transmission physical layer, finite data link layer and crosspoint successively, and give CSN; The handover-related message that BS2 issues BS1 then after have line transceiver 2 to receive, exchanges to line transceiver 1 is arranged by crosspoint, sends BS1 to by the wire transmission cable again, and vice versa.
(2) layer one wired RBS system configuration is as shown in figure 16:
Differently with RBS shown in Figure 15 among the RBS described in Figure 16 be: crosspoint is connected between wire transmission physical layer transmission unit and the cable data link layer transmission unit, and the wireless data link layer transmission unit of described transceiver directly is connected with described wire transmission processing unit.
Under the scene of Figure 14, the SS of BS1 sends receive from wired transceiver 1 to the CSN data after, exchange to the wire transmission processing unit processes by wire transmission physical layer transmission unit, crosspoint and cable data link layer transmission unit successively, and give CSN; The handover-related message that BS2 issues BS1 then after have line transceiver 2 to receive, exchanges to line transceiver 1 is arranged by crosspoint, sends BS1 to by the wire transmission cable again, and vice versa.
Layer three or layer three or more wired RBS can utilize layer three to do Route Selection, for reducing the unnecessary transfer flow or the consideration of safety factor, can also do the communication filtration more than three of layer three or layer.Its structure is similar with layer two RBS, difference be layer three or layer three or more the line transceiver that has of wired RBS comprised wire transmission physical layer, wire transmission data link layer and wire transmission layer three or layer three above processing unit, crosspoint is substituted by wired routing unit.
Among the present invention, also in wireless network architecture, introduce the base station that another has middle rotating function, support the wireless or wired connection between adjacent base station.As shown in figure 17, when portable terminal SS entered the BS1 sub-district by the BS2 sub-district, SS can set up wired R8 path, set up wireless R8 path with BS2 by comprehensive terminal RBS of wire and wireless and BS1, switches thereby finish R8.Also can introduce the comprehensive RBS of multi-hop wire and wireless between adjacent base station and set up the R8 path.
Again as shown in figure 18, when portable terminal SS entered the BS1 sub-district by the BS2 sub-district, SS can set up wired R8 path, set up wireless R8 path with BS2 by RSS by comprehensive terminal RBS of wire and wireless and BS1, switches thereby finish R8.Also can introduce the comprehensive RBS of multi-hop wire and wireless between adjacent base station and set up the R8 path.Also can introduce one between adjacent base station and set up the R8 path with the randomly topologically structured transfer net of forming by what a plurality of wired RBS or wireless RBS or the comprehensive RBS of wire and wireless or RSS or various terminal mixed.
The base station that has the comprehensive middle rotating function of wire and wireless can be fixed, also can move, and itself be exactly the base station.The comprehensive RBS of wire and wireless can be layer two terminal, or even layer three or layer three above terminal.The comprehensive RBS of wire and wireless mainly is made up of a crosspoint, some transceivers and several wired processing units.The comprehensive RBS crosspoint of wire and wireless is used for exchanges data (to support rotating function) between different base station (or RBS) and the exchanges data between base station and subscriber station (or RSS).For centralized wireless network, the comprehensive RBS of wire and wireless also needs wired transmission processing unit to link to each other with upper level equipment through wired cable, and upper level equipment can be base station controller, or WiMAX access server (ASN GW).
The comprehensive RBS of wire and wireless adopts many transceivers to support the subscriber station SS (or RSS) of each BSi (or RBSi) and RBS to be operated in the situation of different frequency range.
The comprehensive RBS of wire and wireless adopts single transceiver to support the subscriber station SS (or RSS) of each BSi (or RBSi) and RBS to be operated in the situation of similar frequency bands.BSi (or RBSi) inserts wired wireless composite RBS with the form of subscriber station, each BSi (or RBSi) can timesharing ground by different burst group (burst) or different frame (frame) with the RBS transceiver, setting up reliable communication with under the frequency range; Each BSi (or RBSi) also can work simultaneously, the RBS transceiver is by different subchannel (subchannel), subcarrier (subcarrier) group, enough directional antenna or smart antenna and each BSi (or RBSi) of isolation, with intercommunication under the frequency range.
Among the present invention, the structure of the comprehensive RBS of described wire and wireless such as Figure 19 and shown in Figure 20:
Under application scenarios shown in Figure 17, the SS of BS1 sends receive from wired transceiver 1 to the CSN data after, exchange to the wire transmission processing unit processes by crosspoint, give CSN; After the handover-related message that BS2 issues BS1 then receives from wireless transceiver 2, exchange to line transceiver 1 is arranged by crosspoint, pass to BS1 by wired cable again, vice versa.
A layer three or layer comprehensive RBS of three above wire and wireless can utilize layer three to do Route Selection, for reducing the unnecessary transfer flow or the consideration of safety factor, can also do the communication filtration more than three of layer three or layer.Its structure is similar with layer two RBS, difference is that the line transceiver that has of layer three or the comprehensive RBS of layer three above wire and wireless has comprised wired or wireless physical layer, wired or wireless data link layer and wired or wireless transport layer three or layer three above processing unit, and crosspoint is substituted by routing unit.
In sum, among the present invention, can improve switching rate in the wireless access system, and improve the reliability of switching by transferring equipment.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.

Claims (11)

1, a kind of transferring equipment is characterized in that, comprising:
Transmission processing unit: can be respectively set up and communicate by letter with one group of base station equipment, and and each base station equipment between carry out information alternately, and this transmission processing unit comprises:
Physical layer transmission unit:, and can communicate with the physical layer transmission unit in the base station of this physical layer transmission unit communication respectively with the data link layer transmission unit;
The data link layer transmission unit: by the physical layer transmission unit in this transferring equipment and can and this transferring equipment in the base station of physical layer transmission unit communication between communicate;
This transferring equipment also comprises crosspoint: be used for signal that the base station equipment that transmission processing unit receives is sent, send to relevant base station equipment by transmission processing unit, and described data link layer transmission unit is communicated by letter with other data link layer transmission units in the described transferring equipment by crosspoint.
2, transferring equipment according to claim 1 is characterized in that, described transmission processing unit comprises: wireless transmission processing unit and/or wire transmission processing unit.
3, transferring equipment according to claim 1, it is characterized in that, described crosspoint is connected between physical layer transmission unit and the data link layer transmission unit, perhaps being arranged at data link layer only is connected with the data link layer transmission unit, perhaps, can also be arranged at that data link layer is above to be connected with the processing unit of equivalent layer.
4, transferring equipment according to claim 2 is characterized in that, also comprises:
The subscriber station processing unit: user terminal is by communicating between this subscriber station processing unit and wireless transmission processing unit and the base station, and/or the subscriber station processing unit is directly by communicating between wireless transmission processing unit and the base station;
Perhaps,
Base station processing unit: by communicating between this base station processing unit and Wireless/wired transmission processing unit and the subscriber station.
5, transferring equipment according to claim 4 is characterized in that, when comprising base station processing unit in this transferring equipment, described crosspoint is also by the base station communication in wire transmission processing unit and the communications cable and the system.
6, a kind of system of switching fast of realizing is characterized in that, comprises each described transferring equipment of claim 1 to 5, and user terminal switch before and switch after the base station, before the described switching and between the base station after switching by the transferring equipment interconnected communication.
7, the quick system of switching of realization according to claim 6, it is characterized in that, when comprising base station processing unit in the described transferring equipment, then described transferring equipment also with system in subscriber station communicate by wireless connections, and also comprise in the described transferring equipment and be used for the wire transmission processing unit that is connected with upper level equipment.
8, the system switched fast of realization according to claim 6 is characterized in that, comprises the subscriber station processing unit in described transferring equipment, then described transferring equipment also with system in user terminal communicate by letter by wireless connections.
9, the system of switching fast according to claim 6,7 or 8 described realizations, it is characterized in that, described transferring equipment respectively with two pattern is identical but communicate by letter by wireless connections in base station that application band is different, perhaps, with two base station communications with time-sharing work frequently, perhaps, with two base station communications of working in frequency range by the enough directional antennas of different subchannels, sub carrier group or isolation.
10, the system of switching fast according to claim 6,7 or 8 described realizations is characterized in that, described transferring equipment is fixed or moved and is arranged in the wireless communication system.
11, the system of switching fast according to claim 6,7 or 8 described realizations is characterized in that, the transfer net of forming with any topological structure by a plurality of transferring equipment between the base station in the system that described realization is switched fast carries out intercommunication.
CNB200510082808XA 2005-07-05 2005-07-08 Relay apparatus and system for implementing fast switching Active CN100502552C (en)

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PCT/CN2006/001526 WO2007003130A1 (en) 2005-07-05 2006-06-30 A transfer device and system for realizing speed handoff and wireless communication system

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EP2217010A4 (en) * 2007-11-02 2014-01-15 Alcatel Lucent System and method for transmitting interactive data between neighbor bss via ms
CN104301958A (en) * 2007-11-02 2015-01-21 上海贝尔股份有限公司 Method for transmitting interference management information between adjacent BSs through MS and BSs
WO2010105425A1 (en) * 2009-03-19 2010-09-23 上海贝尔股份有限公司 Method, device and computer program for interacting shared information between communication units
CN102104937B (en) * 2009-12-17 2013-10-16 中兴通讯股份有限公司 Method and system for reducing power consumption under multi-frequency range group net
CN108847877A (en) * 2018-08-02 2018-11-20 西安安源智造机电设备有限公司 Wireless communication is the same as frequency repeater system

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