CN100438649C - Wireless-transmission network and method - Google Patents
Wireless-transmission network and method Download PDFInfo
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- CN100438649C CN100438649C CNB2005101327878A CN200510132787A CN100438649C CN 100438649 C CN100438649 C CN 100438649C CN B2005101327878 A CNB2005101327878 A CN B2005101327878A CN 200510132787 A CN200510132787 A CN 200510132787A CN 100438649 C CN100438649 C CN 100438649C
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Abstract
The present invention discloses a radio transmission network and a method used for solving the problem that maintenance burden is increased because AAL2 micro cell exchange equipment in the existing radio transmission network needs to be maintained singly. The network of the present invention comprises a radio network controller RNC and at least one base station NodeB, wherein equipment used for asynchronous transmission exchange is connected between the RNC and the NodeB. The method of the present invention comprises the steps that a permanent connecting passage AAL2 PVC of an asynchronous transmission adaptation layer 2 is established between the NodeB of a base station and the radio network controller RNC, and information is directly transmitted between the NodeB and the RNC through the AAL2 PVC passage in an asynchronous transmission mode.
Description
Technical field
The present invention relates to field of wireless, particularly relate to a kind of wireless-transmission network and method.
Background technology
In 3G network, the transfer resource between wireless access network radio network controller (RNC) and the base station node B is of great value, and the utilance that how to improve the wireless access network transfer resource is the important topic that operator is concerned about very much.
Wireless access network both can adopt slotted mode to carry out information exchange, also can adopt the IP mode to carry out message, also can adopt asynchronous transmission ATM mode to carry out message.In existing wireless access network, ATM is the communication mode of a kind of wireless access network information exchange of generally adopting.
In the WCDMA system, the transmission of the information exchange of UE and network side in RAN (wireless access network RadioAccess Network) Iub all finished by AAL2PVC.Owing to have only UE when carrying out related service, just can take Iub AAL2 PVC resource, therefore must use certain method, to reach sharing of Iub AAL2 PVC resource, improve the utilance of Iub AAL2 PVC resource, reduce operator's investment and operation maintenance expense to the Iub transfer resource in the RAN networking.
The method that prior art adopts is to utilize the little cell of AAL2 to exchange, and its network configuration is referring to shown in Figure 1.Basic principle is as follows:
Because the information of unique user is only relevant with the little cell four-tuple of AAL2 (Prot, VPI, VCI, CID), switching equipment is finished the exchange of the little cell first order of AAL2 between RNC and the NodeB according to the little cell of AAL2 and is converged, with the NodeB zone of the little cell of correct route AAL2 to appointment; NodeB Hub realizes second level exchange and converges, the little cell of the AAL2 of particular UE is routed to the resident NodeB sub-district of this UE.In this way, all NodeB that switching equipment connects can share all the Iub AAL2 resources between switching equipment and the RNC, arrive the purpose that improves Iub AAL2 resource utilization.
But there are following shortcoming in existing method and network configuration:
1, strengthened Iub UE message transmission time delay.Owing to adopt the little cell switching of AAL2, each exchange link all need to the AAL2ATM cell unpack, processing such as assembling.
2, influence the Iub interface exploration.RNC need be the little cell switching table of AAL2 switching equipment dynamic-configuration AAL2, and is influential to existing Iub interface exploration.
3, RNC need safeguard the little cell switching equipment of AAL2 separately, has increased the burden of RNC Operation and Maintenance.
4, increase investment and O﹠M cost, operator needs to buy separately the AAL2 switching equipment, and it is safeguarded.
Summary of the invention
The invention provides a kind of wireless-transmission network and method, need to safeguard separately the little cell switching equipment of AAL2 in the present wireless-transmission network, increase the problem of maintenance load in order to solve.
Further,, make Iub UE message transmission time delay increase, and influence the open problem of Iub interface based on the little cell switching of AAL2.
Wireless-transmission network of the present invention, comprise: radio network controller (RNC) and at least two base station node B, between described RNC and NodeB, also be connected with the equipment that is used to carry out the asynchronous transmission exchange, with described NodeB grouping, and after each NodeB in a group carried out cascade with same cascade NodeB, describedly be used to carry out the equipment of asynchronous transmission exchange with one with each cascade NodeB cascade once more, then the described equipment that is used to carry out the asynchronous transmission exchange is linked to each other with RNC, according to resident UE total quantity in each group, for each group is distributed bandwidth resources respectively.
The described equipment that is used to carry out the asynchronous transmission exchange is NodeB or asynchronous transmission switching equipment ATMHub.
The method of wireless transmission of the present invention comprises the following steps:
According to the geographical position base station node B is divided into groups, between each group NodeB and radio network controller (RNC), set up asynchronous transmission adaptation layer 2 permanent interface channel AAL2 PVC respectively, and respectively organize between NodeB and the RNC by AAL2 PVC passage, with the direct transparent transmission information of asynchronous transfer mode, according to resident UE total quantity in each group, for each group is distributed bandwidth resources respectively.
According to resident UE quantity among each NodeB in the group, give each NodeB with the bandwidth resources dynamic assignment that this component is fitted on.
The bandwidth resources surplus that described RNC provides the condition of service to belong at its resident NodeB for this UE for UE component is fitted on satisfies this UE and inserts required bandwidth.
Beneficial effect of the present invention is as follows:
The inventive method provides a kind of new wireless-transmission network structure, and NodeB is by the asynchronous transmission switching equipment, with asynchronous transfer mode directly and RNC carry out the information transparent transmission, finish call proceeding.Described asynchronous transmission switching equipment can be the asynchronous transmission switching equipment ATM Hub that exists in the existing network, perhaps replaces with the NodeB with asynchronous transmission function of exchange that exists in the existing network.Obviously, save the little cell switching equipment of AAL2 in the network configuration of the present invention, thereby avoided the little cell switching equipment of the independent AAL2 of maintenance economy of bringing and the burden of safeguarding the aspect; And then, owing to omitted the little cell switching equipment of AAL2,, thereby no longer influence the exploration of Iub interface so RNC need not little cell switching table into AAL2 switching equipment dynamic-configuration AAL2; Owing to omitted the little cell switching equipment of AAL2, need not the AAL2ATM cell is unpacked and assembled, but adopt the direct transparent transmission of asynchronous transfer mode, so reduced Iub UE message transmission time delay.
In order to reach the purpose that improves Iub AAL2 resource utilization,, the present invention further provides prioritization scheme with corresponding with prior art.Network configuration of the present invention is divided into groups according to the geographical position, and the NodeB of cascade convergent point is convenient to link to each other with RNC by transmission, and other NodeB is convenient to the principle that links to each other with convergent point NodeB, and the NodeB in the network is divided into groups.RNC is each NodeB dynamic assignment AAL2 PVC bandwidth resources according to the resident UE quantity of each NodeB in this group, thereby reaches the effect of " distribution according to need ", has improved Iub AAL2 resource utilization.
Use network of the present invention, the present invention also provides a kind of method of wireless transmission.Between base station node B and radio network controller (RNC), set up AAL2 PVC passage; By described AAL2 PVC passage, with the direct transparent transmission information of asynchronous transfer mode.
Description of drawings
Fig. 1 is the little cell-switched network structure chart based on asynchronous transmission adaptation layer 2;
Fig. 2 is in the network example one, with the networking diagram of one-level base cascade;
Fig. 3 is in the network example two, with base cascade, and finishes the networking diagram of exchange with the asynchronous transmission switching equipment;
Fig. 4 is in the network example three, with base cascade, and finishes the networking diagram of exchange with the base station with asynchronous transmission function of exchange;
Fig. 5 is the inventive method flow chart of steps.
Embodiment
In order in wireless-transmission network, to need not to safeguard the little cell switching equipment of AAL2 separately, reduce maintenance load; Further reduce Iub UE message transmission time delay, and reduce influence to Iub interface exploitation, the invention provides a kind of wireless-transmission network, comprising: radio network controller (RNC), at least one base station node B, and the equipment that is used to carry out the asynchronous transmission exchange.The described equipment that is used to carry out the asynchronous transmission exchange is NodeB or asynchronous transmission switching equipment ATM Hub.
Below specifically describe network of the present invention by three examples.
Network example one: the networking mode of one-level NodeB cascade is applied to the NodeB negligible amounts, the better simply situation of network configuration.Referring to shown in Figure 2, n NodeB links to each other with RNC by a NodeB (cascade NodeB) with asynchronous transmission function of exchange; Also the NodeB (NodeBm) with asynchronous transmission function of exchange directly can be linked to each other with RNC.
Because NodeB negligible amounts in this example, network configuration is simpler, so n NodeB is defaulted as a group.
The bandwidth resources that dispose between each NodeB among the described n NodeB and the RNC are less than or equal to the bandwidth resources that described component is fitted on; The bandwidth resources that each NodeB can be resident UE distribution are less than or equal to the bandwidth resources that this component is fitted on.When access was called out in the UE application, RNC can judge that whether the bandwidth resources surplus that the component of the NodeB ownership that this UE is resident is fitted on satisfies the required bandwidth of this UE access, if satisfy, then provides access service, otherwise informs this UE network busy.
Network example two:, and finish the networking mode that converges of exchange with ATM Hub with the NodeB cascade.Referring to shown in Figure 3, several NodeB are divided into a plurality of groups, and with each NodeB in a group by same cascade NodeB after, link to each other with ATM Hub; Described ATM Hub is connected with RNC.
The resident UE number of each described cascade NodeB is that (as: residence area resident UE user in night is many in irregular distribution, commercial, Administrative Area UE on daytime is resident many), but under the normal condition, the UE number of cascade NodeB overlay area (being same geographical position) is certain, several NodeB can be divided into a plurality of groups in view of the above.
Because the UE number of cascade NodeB overlay area is certain, institute thinks that it also is certain that all UE of this zone provide the bandwidth resources of service needs.According to resident UE quantity in each group, for each group is distributed bandwidth resources respectively, to improve the utilance of transfer resource.
All dispose AAL2 PVC passage between each NodeB and the RNC, according to UE quantity resident among this NodeB, give this NodeB with the bandwidth resources dynamic assignment that this component is fitted on, in the group to satisfy the bandwidth demand of this NodeB.And the bandwidth resources that dispose between each NodeB and the RNC are less than or equal to the bandwidth resources (promptly can use all bandwidth resources of this group) that the component of this NodeB ownership is fitted on; Each NodeB is that bandwidth resources that resident UE distributes are less than or equal to the bandwidth resources (promptly can use all bandwidth resources of this group) that the component of this NodeB ownership is fitted on.
When access was called out in the UE application, RNC can judge that whether the bandwidth resources surplus that the component of the NodeB ownership that this UE is resident is fitted on satisfies the required bandwidth of this UE access, if satisfy, then provides access service, otherwise informs this UE network busy.Adopt this mechanism, realized sharing and the reasonable resources distribution of resource.
Network example three:, and finish the networking mode that converges of exchange with NodeB with asynchronous transmission function of exchange with the NodeB cascade.Referring to shown in Figure 4, several NodeB are divided into a plurality of groups, and with each NodeB in a group by same cascade NodeB after, link to each other with NodeB with asynchronous transmission function of exchange; Described NodeB with asynchronous transmission function of exchange is connected with RNC.
The resident UE number of each described cascade NodeB is that (as: residence area resident UE user in night is many in irregular distribution, commercial, Administrative Area UE on daytime is resident many), but under the normal condition, the UE number of cascade NodeB overlay area (being same geographical position) is certain, several NodeB can be divided into a plurality of groups in view of the above.
Because the UE number of cascade NodeB overlay area is certain, institute thinks that it also is certain that all UE of this zone provide the bandwidth resources of service needs.According to resident UE quantity in each group, for each group is distributed bandwidth resources respectively, to improve the utilance of transfer resource.
All dispose the AAL2PVC passage between each NodeB and the RNC, according to UE quantity resident among this NodeB, give this NodeB with the bandwidth resources dynamic assignment that this component is fitted on, in the group to satisfy the bandwidth demand of this NodeB.And the bandwidth resources that dispose between each NodeB and the RNC are less than or equal to the bandwidth resources (promptly can use all bandwidth resources of this group) that the component of this NodeB ownership is fitted on; Each NodeB is that bandwidth resources that resident UE distributes are less than or equal to the bandwidth resources (promptly can use all bandwidth resources of this group) that the component of this NodeB ownership is fitted on.
When access was called out in the UE application, RNC can judge that whether the bandwidth resources surplus that the component of the NodeB ownership that this UE is resident is fitted on satisfies the required bandwidth of this UE access, if satisfy, then provides access service, otherwise informs this UE network busy.Adopt this mechanism, realized sharing and the reasonable resources distribution of resource.
Corresponding above-mentioned network configuration the invention provides a kind of method of wireless transmission, referring to shown in Figure 5, comprises the following steps:
S0, between NodeB and RNC, set up AAL2 PVC passage.(preparation process)
S1, calling UE are to the Calling Side NodeB request of making a call.
S2, Calling Side NodeB directly are transparent to RNC with asynchronous transfer mode with described call request by AAL2 PVC passage.
S3, RNC directly are transparent to callee side NodeB with asynchronous transfer mode with described call request by AAL2 PVC passage.
S4, callee side NodeB are forwarded to called UE with described call request.
The example of corresponding above-mentioned network configuration below specifically describes the inventive method by three examples.
Method example one: the networking mode of one-level NodeB cascade, promptly calling and called side NodeB is in same group.
S100, between NodeB and RNC, set up the AAL2PVC passage.(preparation process)
Because NodeB negligible amounts in this example, network configuration is simple, so all NodeB are divided into a group (comprising calling and called side NodeB).
According to prior art, between each NodeB and RNC, all dispose asynchronous transmission adaptation layer 2 (AAL2PVC) passage, this passage is used to transmit the PVC information (may pass through some intermediate equipments) between NodeB and the RNC.The shared bandwidth resources of described each bar AAL2PVC passage all can be all bandwidth resources, and each NodeB is that the bandwidth resources that resident UE distributes can be all bandwidth resources.
S101, calling UE are to the Calling Side NodeB request of making a call.
Calling UE is mutual by the air interface NodeB resident with it (Calling Side NodeB), the request of making a call.
S102, Calling Side NodeB directly are transparent to RNC with asynchronous transfer mode with described call request by the AAL2PVC passage.
Calling Side NodeB by its with intermediate equipment (cascade NodeB) between the AAL2PVC passage, carry out simple PVC with intermediate equipment (cascade NodeB) and exchange, call request is sent to cascade NodeB; Because described cascade NodeB has the function of asynchronous transmission exchange, so, described call request directly is transparent to RNC with asynchronous transfer mode by the AAL2PVC passage between itself and the RNC.
S103, RNC directly are transparent to callee side NodeB with asynchronous transfer mode with described call request by the AAL2PVC passage.
After RNC received call request and carries out respective handling, with the principle identical with S102, by the AAL2PVC passage between itself and the cascade NodeB, the call request after will handling with asynchronous transfer mode directly was transparent to cascade NodeB; Cascade NodeB again by its with callee side NodeB between the AAL2PVC passage, carry out simple PVC with callee side NodeB and exchange, the call request after the described processing is sent to callee side NodeB.
S104, callee side NodeB are forwarded to called UE with described call request.
Callee side NodeB is issued to called UE by the call request of air interface after with described processing, finishes call proceeding.
Method example two:, and finish exchange with ATM Hub and converge with the NodeB cascade.
S200, between NodeB and RNC, set up the AAL2PVC passage.(preparation process)
Network configuration is complicated in this example, thus several NodeB are divided into a plurality of groups, and with each NodeB in a group by same cascade NodeB after, link to each other with ATM Hub; Described ATM Hub is connected with RNC.
The resident UE number of each described cascade NodeB is irregular distribution, but under the normal condition, the UE number in cascade NodeB overlay area (same geographical position) is certain.Several NodeB can be divided into a plurality of groups in view of the above, and the summation of the resident user terminal UE of each NodeB is certain in each group.
After described NodeB grouping, according to resident UE quantity in current each group, for each group is distributed bandwidth resources respectively.If variation has taken place the UE quantity in a certain group, then can dynamically adjust the bandwidth resource allocation ratio between each group.
According to prior art, between each NodeB and RNC, all dispose asynchronous transmission adaptation layer 2 (AAL2PVC) passage, this passage is used to transmit the PVC information (may pass through some intermediate equipments) between NodeB and the RNC.According to UE quantity resident among this NodeB, give this NodeB with the bandwidth resources dynamic assignment that this component is fitted on, in the group to satisfy the bandwidth demand of this NodeB.And the bandwidth resources of the AAL2PVC passage between each NodeB and the RNC are less than or equal to the bandwidth resources (promptly can use all bandwidth resources of this group) that the component of this NodeB ownership is fitted on; Each NodeB is that bandwidth resources that resident UE distributes are less than or equal to the bandwidth resources (promptly can use all bandwidth resources of this group) that the component of this NodeB ownership is fitted on.
S201, calling UE are to the Calling Side NodeB request of making a call.
Calling UE is mutual by the air interface NodeB resident with it (Calling Side NodeB), the request of making a call.
S202, Calling Side NodeB directly are transparent to RNC with asynchronous transfer mode with described call request by the AAL2PVC passage.
Calling Side NodeB by its with intermediate equipment (cascade NodeB and ATM Hub) between the AAL2PVC passage, carry out simple PVC with intermediate equipment (cascade NodeB and ATM Hub) and exchange, call request is sent to ATM Hub; Because described ATM Hub has the function of asynchronous transmission exchange, so, described call request directly is transparent to RNC with asynchronous transfer mode by the AAL2PVC passage between itself and the RNC.
S203, RNC directly are transparent to callee side NodeB with asynchronous transfer mode with described call request by the AAL2PVC passage.
After RNC receives described call request, judge whether bandwidth resources surplus that the component of the resident NodeB of calling UE ownership is fitted on satisfies calling UE and insert required bandwidth.
If satisfy, after then RNC carried out respective handling, with the principle identical with S202, by the AAL2PVC passage between itself and the ATMHub, the call request after will handling with asynchronous transfer mode directly was transparent to ATM Hub; Described ATM Hub again by its with cascade NodeB between, and the AAL2PVC passage between cascade NodeB and the callee side NodeB carries out simple PVC with callee side NodeB and exchanges, and the call request after the described processing is sent to callee side NodeB.
If do not satisfy, then inform the called UE network busy.
S204, callee side NodeB are forwarded to called UE with described call request.
Callee side NodeB is issued to called UE by the call request of air interface after with described processing, finishes call proceeding.
Method example three:, and finish exchange with NodeB and converge with asynchronous transmission function of exchange with the NodeB cascade.
S300, between NodeB and RNC, set up the AAL2PVC passage.(preparation process)
Network configuration is complicated in this example, thus several NodeB are divided into a plurality of groups, and with each NodeB in a group by same cascade NodeB after, link to each other with NodeB with asynchronous transmission function of exchange; Described NodeB with asynchronous transmission function of exchange is connected with RNC.
This step other guide is identical with S200.
S301, calling UE are to the Calling Side NodeB request of making a call.
Calling UE is mutual by the air interface NodeB resident with it (Calling Side NodeB), the request of making a call.
S302, Calling Side NodeB directly are transparent to RNC with asynchronous transfer mode with described call request by the AAL2PVC passage.
This steps A TM Hub is replaced by the NodeB with asynchronous transmission function of exchange, and other guide is identical with S202.
S303, RNC directly are transparent to callee side NodeB with asynchronous transfer mode with described call request by the AAL2PVC passage.
This steps A TM Hub is replaced by the NodeB with asynchronous transmission function of exchange, and other guide is identical with S203.
S304, callee side NodeB are forwarded to called UE with described call request.
Callee side NodeB is issued to called UE by the call request of air interface after with described processing, finishes call proceeding.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (6)
1, a kind of wireless-transmission network, comprise: radio network controller (RNC) and at least two base station node B, between described RNC and NodeB, also be connected with the equipment that is used to carry out the asynchronous transmission exchange, it is characterized in that, with described NodeB grouping, and after each NodeB in a group carried out cascade with same cascade NodeB, describedly be used to carry out the equipment of asynchronous transmission exchange with one with each cascade NodeB cascade once more, then the described equipment that is used to carry out the asynchronous transmission exchange is linked to each other with RNC, and according to resident UE total quantity in each group, for each group is distributed bandwidth resources respectively.
2, network as claimed in claim 1 is characterized in that, the described equipment that is used to carry out the asynchronous transmission exchange is NodeB or asynchronous transmission switching equipment ATM Hub.
3, a kind of method of wireless transmission, it is characterized in that, comprise the following steps: base station node B to be divided into groups according to the geographical position, between each group NodeB and radio network controller (RNC), set up asynchronous transmission adaptation layer 2 permanent interface channel AAL2PVC respectively, and respectively organize between NodeB and the RNC by the AAL2PVC passage, with the direct transparent transmission information of asynchronous transfer mode, and according to resident UE total quantity in each group, for each group is distributed bandwidth resources respectively.
4, method as claimed in claim 3 is characterized in that, after the grouping of described geographical position, the summation of the resident user terminal UE of each NodeB is certain in each group.
5, method as claimed in claim 3 is characterized in that, according to resident UE quantity among each NodeB in the group, gives each NodeB with the bandwidth resources dynamic assignment that this component is fitted on.
As claim 3 or 5 described methods, it is characterized in that 6, the bandwidth resources surplus that described RNC provides the condition of service to belong at its resident NodeB for this UE for UE component is fitted on satisfies this UE and inserts required bandwidth.
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| CN105101462A (en) * | 2015-06-05 | 2015-11-25 | 上海华为技术有限公司 | Message multiplexing transmission method, device and system based on Iub interface |
| WO2017161568A1 (en) * | 2016-03-25 | 2017-09-28 | 华为技术有限公司 | Paging method, mme, and enodeb |
Citations (4)
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| WO2001024570A1 (en) * | 1999-09-29 | 2001-04-05 | Nokia Corporation | Telecommunication network using the w-cdma protocol with aal-2 based termination points |
| CN1445947A (en) * | 2002-05-13 | 2003-10-01 | 大唐移动通信设备有限公司 | Automatic building method for realizing specific operation maintenance channel in 3G base station |
| US20040184433A1 (en) * | 2001-04-30 | 2004-09-23 | Thomas Reim | Third generation cellular networks |
| JP2005142914A (en) * | 2003-11-07 | 2005-06-02 | Nec Corp | Mobile network communication path control system, mobile network communication path control method and program |
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2005
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001024570A1 (en) * | 1999-09-29 | 2001-04-05 | Nokia Corporation | Telecommunication network using the w-cdma protocol with aal-2 based termination points |
| US20040184433A1 (en) * | 2001-04-30 | 2004-09-23 | Thomas Reim | Third generation cellular networks |
| CN1445947A (en) * | 2002-05-13 | 2003-10-01 | 大唐移动通信设备有限公司 | Automatic building method for realizing specific operation maintenance channel in 3G base station |
| JP2005142914A (en) * | 2003-11-07 | 2005-06-02 | Nec Corp | Mobile network communication path control system, mobile network communication path control method and program |
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