CN1738486A - Select the method and apparatus of frequency layer for the connection mode subscriber equipment - Google Patents
Select the method and apparatus of frequency layer for the connection mode subscriber equipment Download PDFInfo
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- H04W72/30—Resource management for broadcast services
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
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Abstract
A kind of method and apparatus that is used for selecting for UE in the MBMS mobile communication system PL of interested MBMS service is provided.Connection mode UE receives the FLC applicability information for interested MBMS service, and keeps current frequency or reselect to the PL that MBMS serves according to this FLC applicability information.Even FLC applicability limit information FLC is used for connection mode UE, connection mode UE also can reselect to the PL of MBMS service according to its level of priority.
Description
Technical field
The present invention relates generally to the multi-medium broadcast/group broadcast service (MultimediaBroadcast/Multicast Service, MBMS).Especially, the present invention relates to the method that a kind of control frequency layer is selected, (User Equipment UE) receives the MBMS service to the subscriber equipment of connection mode on this frequency layer.
Background technology
Development of Communication Technique has been introduced Wideband Code Division Multiple Access (WCDMA) (WCDMA) scheme, and this scheme exceeds outside traditional voice service, and the multimedia broadcasting/telecommunication service of the propagation that comprises a large amount of grouped datas or multi-medium data is provided.In this case, the use of the MBMS that serves multichannel UE from one or more multi-medium datas source is being discussed to support multimedia broadcasting/telecommunication.
MBMS is that a kind of being designed to transmitted the service of identical multi-medium data to a large amount of receivers (recipient) by wireless network.Because receiver is shared a radio channel, radio resource can be saved.MBMS supports that (Frequency Layer Convergence is FLC) to reach the purpose of more effective use radio resource for frequency layer convergence.FLC only transmits the MBMS service rather than MBMS is provided on all effective crossover frequencies (overlapped frequency) in the same area service a specific frequency, and the UE that requires hope to receive the MBMS service preferentially reselects the process of characteristic frequency.This characteristic frequency be called as the optimized frequency of MBMS service or optimized frequency layer (preferredfrequency layer, PL).UE carries out the frequency selection course of MBMS according to FLC.
When being used for MBMS session (session) beginning of MBMS service, (Radio Resource Management RRM) is identified for the PL that this MBMS serves by provided for radio resources management.Because the business (traffic) that the UE of an idle pulley is not associated, so even it joins the MBMS service and reselect to PL from a different frequency layer, this does not influence the state of system resource yet.On the contrary, the UE that receives the connection mode of dedicated service service has the business that is associated, and therefore depends on the availability of the radio resource of PL, and it may not receive the service-specific on the PL.If the radio resource of PL is not enough to the business of supply (accommodate) connection mode UE, so described service-specific is no longer available.
Summary of the invention
Advantage below an object of the present invention is to solve fully the problems referred to above and/or shortcoming at least and providing at least.Therefore, an object of the present invention is to provide a kind of method and apparatus, be used to determine whether FLC is applied to or limits FLC be used to subscribe the connection mode UE that MBMS serves.
Another object of the present invention provides a kind of method and apparatus, is used to consider the radio resource status of the PL of MBMS service, and determines whether FLC is applied to or limits the connection mode UE that FLC has been applied to subscribe the MBMS service in network.
Another object of the present invention provides a kind of method and apparatus, is used for indicating whether that the information that FLC is applied to connection mode UE is sent to connection mode UE.
Another object of the present invention provides a kind of and the operation and the configuration that indicate whether FLC is applied to the relevant connection mode UE of the information of connection mode UE.
Above-mentioned purpose is by providing a kind of method and apparatus of selecting to be used for the frequency layer of connection mode UE in the MBMS mobile communication system to realize.
According to an aspect of the present invention, be used in the connection mode UE of MBMS communication system on not preferred frequency layer (NPL), selecting in the method for frequency layer a kind of, connection mode UE receives the message that comprises the preferred frequency information that is associated with the PL of MBMS service from radio network controller (RNC), determine whether preferred frequency information comprises PL service restricted information, if preferred frequency information does not comprise PL service restricted information then switches to this PL.Otherwise, if preferred frequency information comprises PL service restricted information then the current frequency of connection mode LUE maintenance.
According to a further aspect in the invention, be used in the connection mode UE of MBMS communication system on NPL, selecting in the method for frequency layer a kind of, connection mode UE receives the message that comprises the preferred frequency information that is associated with the PL of MBMS service from RNC, and whether definite preferred frequency information comprises PL service restricted information.If preferred frequency information does not comprise PL service restricted information, then connection mode UE switches to this PL.If preferred frequency information comprises PL service restricted information, then connection mode UE carries out the services selection based on priority, and determines according to this result based on the services selection of priority whether connection mode UE continues to use current frequency.
According to the present invention on the other hand, in the device of a kind of UE that is used under connection mode selecting frequency layer in the MBMS communication system, message receiver receives the message that comprises the preferred frequency information that is associated with the PL of MBMS service from RNC.Service controller determine connection mode UE whether on NPL and preferred frequency information whether comprise PL service restricted information.If connection mode UE on NPL and preferred frequency information do not comprise PL service restricted information, then data sink is transformed into this PL and receives the MBMS service, if and connection mode UE on NPL and preferred frequency information comprise PL service restricted information, then keep current frequency.
According to a further aspect in the invention, in a kind of method that the frequency layer of control connection pattern UE is selected in RNC in the MBMS mobile communication system, RNC determines to comprise the preferred frequency information of any PL service restricted information, this PL service restricted information restriction reselects to the PL of the MBMS service of being asked by connection mode UE by the connection mode UE in the sub-district of RNC control, and comprises the message of preferred frequency information to connection mode UE transmission.
Description of drawings
Reach the following detailed description in conjunction with the drawings, the above-mentioned and other purpose of the present invention, characteristics and advantage will become more obvious, wherein:
Fig. 1 illustrates the configuration of MBMS mobile communication system;
The exemplary configurations of sub-district (cell) layer of Fig. 2 explanation crossover in the MBMS service area;
To be explanation be used to determine whether FLC is applied to or limit the flow chart of exemplary signal flow that FLC is applied to the operation of connection mode UE according to embodiments of the invention Fig. 3;
Fig. 4 is the flow chart of the operation of the explanation connection mode UE that is used to receive FLC applicability information according to embodiments of the invention;
Fig. 5 is the flow chart that the operation of the connection mode UE that is used to receive FLC applicability information according to another preferred embodiment of the invention is described;
Fig. 6 is diagram is used to transmit and receive the signal flow of MBMS preferred frequency information according to embodiments of the invention a flow chart;
Fig. 7 is the block diagram that is used to transmit the RNC of MBMS preferred frequency information according to embodiments of the invention; And
Fig. 8 is allowed to use PL to be used for the block diagram of the UE of MBMS according to an embodiment of the invention.
Embodiment
To describe exemplary embodiment of the present invention hereinafter in conjunction with the accompanying drawings in detail.Hereinafter, omitted description for simplicity's sake for well-known function or structure.
Fig. 1 has illustrated the configuration of MBMS mobile communication system.Especially, show Universal Mobile Telecommunications System (Universal Mobile Telecommunications System, UMTS) terrestrial radio access network (Universal Mobile Telecommunications System Terrestrial RadioAccess Network, UTRAN), it is in the third generation project cooperation scheme (3 of asynchronous third generation communication standard
RdGeneration Project Partnership 3GPP) realizes MBMS in the system.
With reference to figure 1, UE the 161,162,163,171, the 172nd, and MBMS enables the terminal equipment or the MBMS subscriber of (MBMS-enabled).First and second sub-districts 160 and 170 (sub-district 1 and sub-district 2) are Node B control, wireless transmission MBMS data geography or the logic region to the subscriber by base station equipment.Radio network controller (Radio Network Controller, RNC) 140 control sub-districts 160 and 170, optionally transmit multi-medium data to specific sub-district, be controlled to be MBMS service and the radio channel of foundation.Be called as radio resource control (RadioResource Control, RRC) interface being connected between RNC 140 and the UE 161 to 172.
By Serving GPRS Support Node (serving GPRS Support Node, SGSN) 130, RNC140 is connected to grouping and switches (PS) network internet for example of (Pachet Switched) or packet service (Packet Service).Communicate between RNC 140 and PS network by PS signal (signaling).Especially, the connection between RNC 140 and SGSN 130 is called as an Iu-PS interface.
SGSN130 control is used for individual subscriber's the service that is associated with MBMS.These services comprise the service bill data of managing each subscriber and optionally transmit multi-medium data to specific RNC 140.
The transfer network (transit network, NW) 120 be provided at the broadcast multicast services center (Broadcast Multicast Service Center, BM-SC) 110 and SGSN 130 between communication path.Transfer NW 120 can pass through Gateway GPRS Support Node (Gateway GPRS SupportNode, GGSN: not shown) and be connected to external network.BM-SC 110 be responsible for the MBMS data dispatch the MBMS data source.To be sent to UE 161 to 172 from the MBMS data flow that BM-SC 110 produces by transfer NW 120, SGSN 130, RNC 140, sub-district 160 and 170.
With reference to figure 2, existing have the exemplary configuration of the MBMS service area of crossover sub-district with description.With reference to figure 2, in the MBMS service area A that specific MBMS service is provided, spatially overlapped by the zone of different frequency f1 and f2 covering.The frequency f 1 or the f2 of crossover, or the sub-district with f1 or f2 is called as frequency layer.
FLC is a following proposal, wherein the UTRAN request UE that has been scheduled to the MBMS service preferably reselects the frequency layer that will transmit the MBMS service thereon, so that given MBMS service is provided on all frequency layer f1 on each frequency layer f1 or the f2 rather than in regional A and f2.In cell configuration shown in Figure 2, if being used for the PL of MBMS service B is f2, then when the MBMS session that is used for MBMS service B begins and in the process of MBMS service B, B just switches to f2 if the UE on the frequency layer f1 among the A of zone wishes to receive the MBMS service, promptly carries out the sub-district and reselects.When the MBMS session begins and in the process of MBMS session, UTRAN instructs the UE on the f1 to move to f2.F2 is the PL of MBMS service B, and f1 be MBMS service B not preferred layer (non-preferred layer, NPL).
B is always not obtainable on NPL in the MBMS service.Signal strength measurement at PL is not enough to be used for can MBMS be served B by RRM and offer them on NPL under the situation of the UE on the NPL.Compare with NPL, specific MBMS service mainly or only is provided on PL.Though for MBMS service B PL is fixed as f2 in above-mentioned example, the PL that is used for MBMS service B may be inequality in zones of different.For example, f2 is the PL that is used for MBMS service B in some zone, and f1 is the PL that is used for MBMS service B in another zone.The PL that is used for the MBMS service depends on the operator's of system the sub-district framework strategy and the radio resource status of current area.According to the 3GPP standard, the session of serving from each MBMS begins up to conversation end, and the FLC that concerns between application definition MBMS service and their PL handles.
For an idle pulley UE who joins the MBMS service, there is not the connection of UTRAN and do not have data to transmit.Therefore, it can move to PL from NPL and not consider the availability (availaboility) of radio resource.On the other hand, the transfer of the UE of connection mode from NPL to PL is subjected to the influence of radio resource availability, this is because it is placed in cell forward access channel (Cell ForwardAccess Channel, CELL_FACH), cell paging channel (Cell Paging Channel, CELL_PCH), UMTS registration area paging channel (UMTS Registration Area Paging Channel, URA_PCH), and cell private channel (Cell Dedicated Channel, CELL_DCH) in the state.
DPCH is not distributed to UE, and UE monitors Common transport channel under the CELL_FACH state.In the CELL_PCH state, UE neither has DPCH and does not also have dedicated logical channel.The URA_PCH state is similar to the CELL_PCH state.At the high mobility of UE cell update is forced under the situation of constraint the URA_PCH state is set.DPCH is available to the UE in the CELL_DCH state.
In the MBMS mobile communication system, according to the radio resource status of corresponding PL, it still is the UE that restriction FLC is used for connection mode that UTRAN can determine FLC is applied to.UTRAN makes by RRM and determines and will determine that the result is sent in the sub-district that is under the control to UE.The UE of connection mode operates according to the result who determines.FLC scheme according to embodiments of the invention is effective especially for the UE that is under CELL_FACH or the CELL_DCH state.
With reference to Fig. 3 to being used to determine that it still is that the restriction FLC RNC operation that is applied to UE is described in detail that FLC is applied to UE.
To be explanation be used to determine FLC is applied to or limit the flow chart of signal flow of operation that FLC is used for the subscriber equipment of connection mode according to embodiments of the invention Fig. 3.
With reference to figure 3, in step 201, the radio resource that the RNC measurement is used for the PL of ongoing MBMS service limits the UE that FLC is used for connection mode to determine application FLC to the UE of connection mode.
In step 203, RNC determines whether the radio resource through measuring is enough to supply the business that is associated of the UE of connection mode.Should determine can be by considering the availability of PL radio resource, and the number that joins the sum of the connection mode UE on the NPL of MBMS service or be in the connection mode UE under each state of CELL_FACH, CELL_PCH, URA_PCH, CELL_DCH is determined.If radio resource is enough to provide the business that is associated, then the RNC decision is used FLC to the connection mode UE on NPL, and advances to step 205.
In step 205, RNC is provided with FLC applicability information, and FLC_DI (FLC that is used for connection mode UE forbids indication) sends the UE of the connection mode that is associated with the MBMS service to for ' N ' and with it.Here, ' N ' expression FLC is suitable for.In this case, UTRAN can provide non-MBMS service (non-MBMS service) on the PL of MBMS.
Perhaps, if radio resource is not enough to supply the business that is associated, then the RNC decision is not used FLC to connection mode UE, and forwards step 207 to.In step 207, RNC is provided with FLC_DI and is ' Y ', and sends it to connection mode UE.' Y ' expression FLC restriction (restriction).In this case, the supply of the dedicated service service except the MBMS service all is restricted on PL.In other words, UTRAN does not provide any non-MBMS service on the PL of MBMS.Therefore, the FLC_DI value is set to ' Y ' and is known as PL service restricted information.
The FLC_DI value can be the mark of one one bit, and indication FLC is applied to or limits FLC and is used for connection mode UE or the UE under specific RRC state (for example CELL_FACH).Can further consider as an alternative embodiment of the invention, the FLC_DI value is made as one 4 bit map (bitmap) or 2 bit integer, be used for representing for the nearly FLC application or the FLC restriction of four other connection mode states of branch of network.
Under the situation of 4 bit map, first is to FLC application or the FLC restriction of the 4th bit-order ground expression for URA_PCH, CELL_CH, CELL_FACH, CELL_DCH state.For example, ' 0011 ' bitmap can indicate FLC to be limited to be used for UE under CELL_FACH and the CELL_DCH state, but is applied to the UE under URA_PCH and the CELL_PCH state.
Under the situation of 2 bit integer, for example, 2 bit integer 00,01,10 and 11 can represent respectively that FLC is limited to be used for the UE under CELL_DCH, CELL_FACH, CELL_PCH, the URA_PCH state.For example, if integer is ' 01 ', FLC then is limited to be used for the UE under the CELL_FACH state, but is applied to the UE under CELL_DCH, URA_PCH, the CELL_PCH state.
Fig. 4 is that explanation is used to receive FLC applicability information according to embodiments of the invention, is set to the flow chart of operation of connection mode UE of FLC_DI of the mark of a bit,.
With reference to figure 4, in step 222, UE receives the FLC notification message that comprises the MBMS preferred frequency information by common signaling (common signaling) or dedicated signaling (dedicated signaling).The MBMS preferred frequency information preferably includes for it will carry out the service identifier (ID) of the MBMS service of FLC, preferred frequency information, MBMS side-play amount, the FLC_DI set point of indicating the PL of MBMS service.
In step 224, UE determines the MBMS the service whether service ID that receives indicates this UE to add.If service ID is not equal to the ID of the MBMS that added service, then UE keeps current sub-district in step 234, promptly current frequency and do not carry out this FLC.
If the MBMS service that the service ID indication is added, then UE checks FLC_DI in step 226.If FLC_DI is set to indicate FLC to be limited to be used for UE ' Y ', then UE forwards step 234 to, and UE remains on current frequency and do not measure the intensity of PL signal and reselect to PL in this step.Even current frequency is NPL, when current frequency has sufficient available resources, interested MBMS service can be provided on the NPL.UE is by learning the availability of the service on the NPL in the MBMS control information that receives on the NPL.
If FLC_DI is set in step 226 ' N ', then UE determines whether current frequency is NPL in step 228.If UE is current on NPL, then the sub-district that it is carried out on the PL in step 230 is reselected.On the contrary, if UE not on NPL, then it keeps current frequency in step 234.
Based on the signal strength measurement of the indicated PL of the FLC notification message that receives in step 222, the sub-district of execution in step 230 is reselected.The MBMS side-play amount is used as the sub-district that increases PL and reselects the factor of probability (factor).
Although in the above-described embodiments, the flag F LC_DI of one bit is provided with that indication FLC is applied to or FLC is limited to be used for connection mode UE or is in UE under the specific RRC state, but if for the applicability of the state of each connection mode indication FLC, then the mark of this bit can be with the integer replacement of 4 bit map or 2 bits.
Fig. 5 illustrates the flow chart that is used to according to another embodiment of the present invention to receive as the connection mode UE operation of the FLC applicability information of a bit labeling.In operation, UE only when its just check on NPL the time FLC_DI value of setting and, if FLC_DI is set to ' Y ', then it carries out service selection process according to priority.
With reference to figure 5, UE receives the FLC notification message that comprises the MBMS preferred frequency information by common signaling or dedicated signaling in step 302.The MBMS preferred frequency information preferably includes the service ID of serving for its MBMS that will carry out FLC, preferred frequency information, MBMS side-play amount, the FLC_DI that indicates the PL of MBMS service.In step 303, UE determines the MBMS the service whether service ID that receives indicates UE to join.If service ID is not equal to the ID of the MBMS service that joins, then UE keeps current sub-district in step 311, that is, and and current frequency, and do not carry out FLC.
If the MBMS service that the service ID indication is added, then UE determines whether current frequency is NPL in step 312.If UE is not on NPL, then it keeps current frequency in step 311.If on NPL, then it forwards step 321 to UE at present.
In step 321, UE checks FLC_DI.If FLC_DI is set to ' Y ', then UE selects ongoing dedicated service service and notifies in the indicated MBMS service one by FLC in step 323.By (UE selects the service with higher priority for Non-Access Stratum, reciprocation NAS) with user or Non-Access Stratum.
In step 324, UE determines whether the service of selecting is by the indicated MBMS service of FLC notification message, promptly has the MBMS service of this PL.If selected the MBMS service, then UE will stop the dedicated service service and proceed to step 322 in step 325.In step 322, the UE measurement is used for the signal strength signal intensity of the PL of MBMS service, and reselects to PL based on this signal strength signal intensity.
If selected the dedicated service service, then UE will continue this dedicated service service and not have FLC to use on current frequency in step 311.
Although in the above-described embodiments, the flag F LC_DI of one bit is provided with that indication FLC is applied to or FLC is limited to be used for the UE of connection mode or is in UE under the specific RRC state, but if for the applicability of the state of each connection mode indication FLC, then the mark of this bit can be replaced with the integer of 4 bit map or 2 bits.
Fig. 6 is explanation is used to transmit and receive the signal flow of MBMS preferred frequency information according to embodiments of the invention figure.In Fig. 6, label 408 one of expression are used for the NPL of specific MBMS service, and label 409 expressions are used for the PL of MBMS service.The coverage of NPL and PL (coverage area) has crossover on the MBMS coverage.Label 410 expression is used to manage the RNC of the radio resource of the NPL that is used for the MBMS service and PL.
With reference to figure 6, RNC 410 receives session (Session Start) message of a session of serving for MBMS from the SGSN of core network in step 411.Session begins message, and session begins the foundation of requirement radio bearer (bearer) for MBMS.Comprising service ID and service quality (Quality of Service, QoS) information.
Begin message based on receiving session, RNC410 transmits the FLC notification message as the signaling for FLC in step 421.The FLC notification message preferably includes the service ID of MBMS service, the preferred frequency information of indicating the PL of MBMS service, MBMS side-play amount, FLC_DI setting.The MBMS side-play amount is a threshold value of comparing with the signal strength measurement of PL when the UE on NPL reselects to PL.FLC_DI is provided with the FLC applicability of expression for connection mode UE.
In step 431, the connection mode UE on NPL 408 operates according to the FLC_DI that is provided with in the FLC notification message.If FLC_DI is set to ' N ', then connection mode UE reselects to PL 409 based on the PL 409 that measures.If FLC_DI is set to ' Y ', then connection mode UE will be chosen in ongoing business service on the current frequency and by one in the MBMS service of FLC notification message indication according to level of priority.If selected the MBMS service, then connection mode UE stops the dedicated service service and reselects to PL according to the measurement of PL 409.On the other hand, if selected the dedicated service service, then connection mode UE continues this dedicated service service and does not carry out the sub-district and reselect on current frequency.
Simultaneously, based on receiving the FLC notification message, if the signal strength measurement of PL 409 is fully, then the idle pulley UE on NPL 408 be transformed into PL 409 and no matter FLC_DI how.
Before the MBMS session began, 410 couples of RNC were about to receive the number of the UE of MBMS service and count, the type of decision channel, and between step 431 and 441, set up radio bearer.
Along with MBMS session in step 441 begins, RNC 410 periodically transmits the FLC notification message for the MBMS session so that be supported in the mobility of the UE in the sub-district under RNC 410 controls in step 451 and 452.Based on receiving periodic FLC notification message, when needs, the UE on NPL 408 is provided with based on the service ID in the FLC notification message, preferred frequency information, FLC_DI and carries out the sub-district and reselect to PL 409.Therefore, they can receive the MBMS service at present.
In the above-described embodiments, when being set to the mark of a bit, FLC_DI is provided with that indication FLC is applied to or FLC is limited to be used for the UE of connection mode, the mark of this bit can be with representing that the mark for a bit of the applicability that is in the UE under the specific RRC state replaces, or with representing for 4 bit map of the FLC applicability that is in the UE under each connection mode state or the integer replacement of 2 bits.
In this way, the UE of connection mode can utilize from FLC_DI and the PL Resource Availability knowledge of the interested MBMS service that is obtained is set and carry out FLC effectively.
Fig. 7 is the block diagram that is used to transmit the RNC of MBMS preferred frequency information according to embodiments of the invention.This RNC comprises radio resource manager 710, FLC controller 720, message conveyer 730.The broadcasting conveyer that is used to transmit the MBMS broadcast data does not illustrate therein.
With reference to figure 7, radio resource manager 710 is the cell management radio resource under its control, and measures the amount of radio resources that can use for each frequency in the sub-district.FLC controller 720 determines whether the radio resource of the PL of the specific MBMS service through measuring is enough to supply the business that is associated with the ongoing dedicated service service of connection mode UE.Dedicated service service right and wrong MBMS service.More clearly, FLC controller 720 is considered the number of the connection mode UE that adds the MBMS service on NPL, perhaps be in the number of the connection mode UE under the particular state, determine the business that is associated that whether can supply connection mode UE through the radio resource of measuring.FLC controller 720 is provided with the MBMS preferred frequency information according to the result who determines.That is to say that FLC controller 720 determines will begin for it PL of the MBMS service of session, simultaneously, determine in the MBMS preferred frequency information, whether to comprise PL service restricted information.If radio resource is enough to supply the business that is associated of connection mode UE, then the MBMS preferred frequency information does not comprise PL service restricted information, otherwise then comprises.For example, the PL restricted information when being changed to ' Y ', FLC_DI is arranged.In another embodiment of the present invention, FLC controller 720 can comprise in the MBMS preferred frequency information that PL serves the decision of restricted information and be made at according to different standard (criteria) for example about the service strategy of MBMS or service provider's selection.Message conveyer 730 resembles the FLC notification message by comprising the general information that is associated with available MBMS service, transmits the MBMS preferred frequency information.
Comprise in the MBMS preferred frequency information under the situation of PL service restricted information that the broadcasting conveyer does not preferably provide any non-MBMS service on the PL of MBMS service.On the contrary, when not having PL service restricted information, the broadcasting conveyer can provide non-MBMS service on the PL of MBMS.
Fig. 8 is the block diagram that is allowed to use the UE of PL according to an embodiment of the invention for MBMS service.This UE comprises message receiver 810, service controller 820, data sink 830.
With reference to figure 8, message receiver 810 receives the message of the general information that comprises the MBMS service that adds about this UE, and obtains the preferred frequency information of the PL of this MBMS service of indication.Service controller 820 execution graphs 4 or process illustrated in fig. 5.That is to say, if UE on PL, then service controller 820 decision keeps current frequencies and does not carry out MBMS frequency selection course.In this case, data sink 830 continues to receive the dedicated service service on current frequency.
On the other hand, if UE on NPL and the MBMS preferred frequency information do not comprise any PL service restricted information, then service controller 820 decisions reselect to the PL of MBMS service.Data sink 830 is measured the signal strength signal intensity of PL then, and if signal strength signal intensity surpassed predetermined threshold value, then it switches to PL and continue to receive the dedicated service service.
Simultaneously, if UE on NPL and the MBMS preferred frequency information comprise PL service restricted information, then service controller 820 is in the service selection process of carrying out between MBMS service and the service of ongoing dedicated service on the current frequency based on priority.If selected the MBMS service, then data sink 830 under the control of service controller 820, stop the dedicated service service, reselect to MBMS service PL, receive the broadcast data of MBMS data.
As mentioned above, embodiments of the invention are notified to the UE of connection mode with the radio resource status of the PL of interested MBMS service, have avoided can not supplying on the PL of MBMS the situation of the business of MBMS service thus.
Though illustrate and described the present invention with reference to some preferred embodiment of the present invention, it will be appreciated by those skilled in the art that under the condition that does not break away from as the additional the spirit and scope of the present invention that claim limited and to carry out various modifications in form and details.
Claims (26)
1. mobile communication system that is used at multi-medium broadcast/group broadcast service (MBMS) is selected the method for frequency layer in the connection mode subscriber equipment (UE) on not preferred frequency layer (NPL), comprise the steps:
Receive the message that comprises the preferred frequency information that is associated with the optimized frequency layer (PL) of MBMS service from radio network controller (RNC);
Determine whether preferred frequency information comprises PL service restricted information;
If preferred frequency information does not comprise PL service restricted information, then switch to PL; And
If preferred frequency information comprises PL service restricted information, then continue to use current frequency.
2. the method for claim 1 also comprises if connection mode UE not on any NPL, then keeps the step of current frequency.
3. the method for claim 1, wherein, be in the business that connection mode or the hope down of predetermined radio resource control (RRC) state receive the UE of MBMS service if the radio resource of PL is not enough to supply, then preferred frequency information comprises that PL serves restricted information.
4. the method for claim 1, wherein described PL service restricted information is represented for the bitmap or the integer of frequency layer convergence (FLC) usability of each connection mode state by indication.
One kind in the mobile communication system of multi-medium broadcast/group broadcast service (MBMS), select the method for frequency layer in the connection mode subscriber equipment (UE) on not preferred frequency layer (NPL), comprise step:
Receive the message that comprises the preferred frequency information that is associated with the optimized frequency layer (PL) of MBMS service from radio network controller (RNC);
Determine whether preferred frequency information comprises PL service restricted information;
If preferred frequency information does not comprise PL service restricted information, then switch to PL;
If preferred frequency information comprises PL service restricted information, then carry out service selection process based on priority; And
Determine according to result whether connection mode UE continues to use current frequency based on the service selection process of priority.
6. method as claimed in claim 5 also comprises the step that continues to use current frequency based on being chosen in ongoing dedicated service service on the current frequency.
7. method as claimed in claim 5 also comprises the steps:
Stop the dedicated service service and switch to PL based on selecting the MBMS service.
8. method as claimed in claim 5, also comprise if connection mode UE not on any NPL then keep the step of current frequency.
9. method as claimed in claim 5, wherein, be in the business that connection mode or the hope down of predetermined radio resource control (RRC) state receive the UE of MBMS service if the radio resource of PL is not enough to supply, then preferred frequency information comprises that PL serves restricted information.
10. method as claimed in claim 5, wherein, described PL service restricted information is represented for the bitmap or the integer of frequency layer convergence (FLC) applicability of each connection mode state by indication.
11. a device that is used for selecting the subscriber equipment (UE) of frequency layer in multi-medium broadcast/group broadcast service (MBMS) mobile communication system under connection mode comprises:
Message receiver is used for receiving the message that comprises the preferred frequency information that is associated with the optimized frequency layer (PL) of MBMS service from radio network controller (RNC);
Whether service controller, the UE that is used for determining connection mode are gone up and whether preferred frequency information comprises PL service restricted information in not preferred frequency layer (NPL); And
Data sink, if the UE that is used for connection mode on NPL and preferred frequency information do not comprise PL service restricted information, then switch to PL and receive the MBMS service, if and connection mode UE on NPL and preferred frequency information comprise PL service restricted information, then continue to use current frequency.
12. device as claimed in claim 11, wherein, if the UE of connection mode not on any NPL, then data sink keeps current frequency.
13. device as claimed in claim 11, wherein, if UE on NPL and preferred frequency information comprise PL service restricted information, then service controller is carried out the service selection process based on priority.
14. device as claimed in claim 13, wherein, described data sink continues to use current frequency based on being chosen in ongoing dedicated service service on the current frequency, and stops the dedicated service service and switch to PL based on selecting the MBMS service.
15. device as claimed in claim 11, wherein, be in the business that connection mode or the hope down of predetermined radio resource control (RRC) state receive the UE of MBMS service if the radio resource of PL is not enough to supply, then preferred frequency information comprises that PL serves restricted information.
16. device as claimed in claim 11, wherein, described PL service restricted information is represented for the bitmap or the integer of frequency layer convergence (FLC) applicability of each connection mode state by indication.
17. one kind in multi-medium broadcast/group broadcast service (MBMS) mobile communication system, the method that the frequency layer of control connection mode user equipment (UE) is selected in radio network controller (RNC) comprises the steps:
Determine to comprise the preferred frequency information of optimized frequency layer (PL) service restricted information, this optimized frequency layer service restricted information restriction is reselected to the PL of the desirable MBMS service of connection mode UE by the connection mode UE in the sub-district of RNC control; And
The message that will comprise preferred frequency information is sent to connection mode UE.
18. method as claimed in claim 17, wherein, be in the business that connection mode or the hope down of predetermined radio resource control (RRC) state receive the UE of MBMS service if the radio resource of PL is not enough to supply, then preferred frequency information comprises that PL serves restricted information.
19. method as claimed in claim 17, wherein PL service restricted information is represented for the bitmap or the integer of frequency layer convergence (FLC) applicability of each connection mode state by indication.
20. a device that is used in multi-medium broadcast/group broadcast service (MBMS) mobile communication system in the frequency layer selection of radio network controller (RNC) control connection mode user equipment (UE) comprises:
Frequency layer convergence (FLC) controller, be used to determine to comprise the preferred frequency information of optimized frequency layer (PL) service restricted information, this optimized frequency layer service restricted information restriction is reselected to the PL of the desirable MBMS service of connection mode UE by the connection mode UE in the sub-district of RNC control; And
Information transfer device, the message that is used for comprising preferred frequency information is sent to connection mode UE.
21. device as claimed in claim 20, wherein, if the radio resource of PL is not enough to the business that supply is in the UE of the hope reception MBMS service under connection mode or predetermined radio electric resources control (RRC) state, then preferred frequency information comprises PL service restricted information.
22. device as claimed in claim 20, wherein said PL service restricted information is represented for the bitmap or the integer of frequency layer convergence (FLC) applicability of each connection mode state by indication.
23. device as claimed in claim 20, also comprise radio resource manager, be used for managing the sub-district radio resource, measure for each frequency of sub-district can with amount of radio resources, measurement is offered the FLC controller to be used for determining preferred frequency information.
24. one kind in the mobile communication system of multi-medium broadcast/group broadcast service (MBMS), select the method for frequency layer in the connection mode subscriber equipment (UE) on not preferred frequency layer (NPL), comprise the steps:
Receive the message that comprises the preferred frequency information that is associated with the optimized frequency layer (PL) of MBMS service from radio network controller (RNC); And
Determine whether to comprise in the preferred frequency information PL service restricted information.
25. method as claimed in claim 24 also comprises the step that switches to PL if preferred frequency information does not comprise PL service restricted information.
26. method as claimed in claim 24 also comprises if preferred frequency information comprises PL service restricted information, then continues to use the step of current frequency.
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|---|---|---|---|
| KR20040058947 | 2004-07-27 | ||
| KR58947/04 | 2004-07-27 | ||
| KR84329/04 | 2004-10-21 |
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| CN1738486A true CN1738486A (en) | 2006-02-22 |
| CN100534217C CN100534217C (en) | 2009-08-26 |
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| CNB2005101098987A Expired - Fee Related CN100534217C (en) | 2004-07-27 | 2005-07-27 | Method and apparatus for selecting frequency layer for connected mode ue in an mbms mobile communication system |
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| KR (1) | KR100933143B1 (en) |
| CN (1) | CN100534217C (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20060010682A (en) | 2006-02-02 |
| KR100933143B1 (en) | 2009-12-21 |
| CN100534217C (en) | 2009-08-26 |
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