CN100455124C - Method for user equipment start service and selecting small area - Google Patents

Abstract

The method can let UE to make high speed uplink in shorter time delay and optimize the allocation of E-DCH resource at network side. It comprises: in a cell, broadcasting the message about the E-DCH TTI capacity of current cell; UE receives the E-DCH TTI capacity of the cell and takes it as one of references used for initiating and selecting cell. The E-DCH TTI capacity message can be carried in newly-added IE or expanded IE.

Description

The method of user equipment start service and selection sub-district

Technical field

The present invention relates to mobile communication technology, particularly with the professional initiation mobile communication technology relevant with cell selecting.

Background technology

Third generation partner program (3rd Generation Partnership Project, abbreviation " 3GPP ") vital tissue as moving communicating field has promoted 3G (Third Generation) Moblie (The Third Generation, be called for short " 3G ") standardization effort of technology, the carrying of uplink and downlink business all is based on dedicated channel in its early stage protocol version.Wherein, the message transmission rate that uplink and downlink can reach in 99 editions (Release 99, are called for short " R99 ") is 384 kilobits per seconds (Kbps).

Along with the development of mobile communication technology, 3G technology is also in constantly development evolution.Many to flow and delay requirement higher data business, as video, Streaming Media and download etc., need system that higher transmission rate and shorter time delay are provided.High speed downlink packet inserts (High Speed Downlink PacketAccess is called for short " HSDPA ") and high speed uplink packet access (High Speed Uplink PacketAccess is called for short " HSUPA ") is exactly the important evolution of 3G technology.Be different from the scheduling of packet in the R99 version and retransmit by radio network controller (Radio Network Controller, be called for short " RNC ") control, the scheduling of the packet among HSDPA and the HSUPA and re-transmission etc. are controlled by base station (NodeB), this control is quicker, and better adaptive channel changes, reduces the throughput of propagation delay time and increase data.HSDPA and HSUPA can provide the peak rate up to 14.4 MBPSs (Mbps) and 5.76Mbps respectively, and the availability of frequency spectrum also is greatly improved.

Wherein, HSDPA was introduced in 3GPP the 5th edition as down high-speed data bag access technology, and (Release 5 in 2002, abbreviation " R5 ") in the version, it adopts shorter Transmission Time Interval (Transmission Timing Interval, be called for short " TTI "), 2ms or 10ms are to realize quick self-adapted control.Use adaptive coding and modulation (Adaptive Modulation andCoding in physical layer, be called for short " AMC ") and mix automatic repeat requests (Hybrid Auto Repeat reQuest, be called for short " HARQ "), introduce 16 rank quadrature amplitude modulations (Quadrature Amplitude Modulation is called for short " QAM ") modulation and improve the availability of frequency spectrum.Among the HSDPA, the HARQ technology adopts multi-process, use stop-and-wait protocol (Stop And Wait, be called for short " SAW "), subscriber equipment (User Equipment, abbreviation " UE ") the ACK/NACK indication that whether the feedback designation data correctly receives after the reception data is so that NodeB determines re-transmission or sends new data.The descending channel quality indication (Channel Quality Indicator is called for short " CQI ") that AMC specification requirement UE feedback measures is so that NodeB determines the code rate and the transformat of descending HSDPA data.

In order to realize the high-speed transfer of UE downlink data, HSDPA has increased two down physical channels and a uplink physical channel newly, they are respectively descending high-speed physical downlink shared channel (HS-PDSCH) (the High Speed Physical Downlink Control Channel that is used for carrying user data, be called for short " HS-PDSCH "), be used to carry descending High-Speed Shared Control Channel (the High Speed Shared Control Channel of the required signaling of demodulation companion data channel HS-PDSCH, be called for short " HS-SCCH) ", and the up Dedicated Physical Control Channel (High Speed Dedicated Physical Control Channel is called for short " HS-DPCCH ") that is used to carry feedback informations such as the ACK/NACK of UE and CQI.The base station knows by HS-DPCCH whether data are correctly received, if incorrect, will initiate to retransmit, otherwise send new data.

HSDPA will optimize network to reduce the lower expense of every bit.Concerning operator, introduce the capacity that HSDPA can increase network carrying data, services, strengthen spectrum efficiency, improve the utilance of hardware resource, improve the validity of networking; Concerning domestic consumer, HSDPA means higher message transmission rate, shorter service reaction time and more reliable service.

HSUPA has been incorporated in 2004 in the version of 3GPP the 6th edition (Release 6, are called for short " R6 ") as the high speed uplink data packet access technique.Similar with HSDPA, HSUPA adopts shorter TTI and frame length (2ms or 10ms) to realize quick self-adapted control, uses HARQ and based on the fast uplink dispatching technique of base station, has improved up spectrum efficiency.

In order to realize the high-efficiency transfer of UE upstream data, HSUPA has increased two uplink physical channels and three down physical channels newly, they are respectively up enhancing dedicated data transmission channel (the Enhanced-DCH Dedicated Physical Data Channel that is used for carrying user data, be called for short " E-DPDCH "), be used to transmit accompanied by physical layer signaling, for the E-DPDCH demodulation provides the up enhancing Dedicated Control Channel of following signaling (Enhanced-DCH Dedicated Physical ControlChannel, be called for short " E-DPCCH "), be used to control absolute grant channel (the Enhanced-DCH Absolute Grant Channel of the uplink speed of UE, be called for short " E-AGCH ") and relative authorization channel (Enhanced-DCH Relative Grand Channel, be called for short " E-RGCH "), and be used to indicate the whether correct retransmission indicating chanel (E-DCH Hybrid ARQIndicator Channel is called for short " E-HICH ") of up process data transmission.Wherein, E-AGCH only exists in the wireless connections Serving cell, is used to indicate the peak transfer rate of UE uplink permission, and the frequency ratio of adjusting is lower; E-RGCH can exist at the service and the non-service cell of wireless connections, is used to indicate UE to adjust uplink speed by a fixed step size, and the frequency ratio of adjustment is higher, reaches as high as every TTI once.Among the HSUPA, UE knows by E-HICH whether data are correctly received, if incorrect, will initiate to retransmit, otherwise send new data.

Different with HSDPA is, UE up sign indicating number resource and power resource are that each UE exclusively enjoys in HSUPA, and the base station need not dispatched at up sign indicating number resource and power resource.But the certain transmission rate of up each UE can produce corresponding interference at the base station receiving terminal among the HSUPA, and the base station can ensure the demodulation performance of UE in the interference range that allows.But, surpass the scope of setting if disturb, just may make the demodulation performance of some UE to ensure, so the basic principle of HSUPA base station scheduling is the interference level that control and permission UE bring at the base station receiving terminal.The up fast dispatch in base station is according to the interference level and setting thresholding of current area, determine the transmitted data rates of the up permission of UE, and when interference level is too high, can reduce the up message transmission rate of UE fast, make uplink interference in the target zone of setting.

HSDPA and HSUPA technology will provide high performance service with low cost, and multimedia provides may in order to realize the real large-scale market-oriented mobile internet interconnection agreement of using (Internet Protocol is called for short " IP ").Because VoIP is the main driving of IMS and all-IP net, it also is the key of fixing and wireless two net unifications, therefore most important for mobile development in future, packet voice (Voice over IP based on HSDPA/HSUPA, abbreviation " VoIP ") is undoubtedly the solution that development potentiality is arranged in the future most, also only under the such high bandwidth situation of HSDPA/HSUPA, VoIP just can provide the capacity similar to circuit switching.

According to current agreement TS25.331 (680) cell broadcasting system block of information (System InformationBlock is called for short " SIB ") 5.UE is by receiving the SIB5 in the cell broadcast messages, can only obtain current area and whether support dedicated channel (the Enhanced Dedicated Channel that strengthens, be called for short " E-DCH "), it also is the ability that high speed uplink is shared transmission channel, wherein, each information element of SIB5 (Information Element is called for short " IE ") and content thereof are as shown in table 1.

Specifically, IE type (Need) can be essential (Mandatory Present, abbreviation " MP "), optional (Optional Present, essential option (the Mandatory withdefault value that default value is arranged abbreviation " OP "),, be called for short " MD ") and condition entry (Conditional on value is called for short " CV ").Wherein, MD is usually used in the description of IE type in the message, and it shows that this IE is the mandatory parameter in the message, but the default value definition is arranged, and when using default value, can not be this IE coding clearly in message; CV represents that this IE is the conditional parameter in the message, has only when incidental condition satisfies, and just can comprise this IE in the message; Otherwise, can not comprise this IE in the message.

The CV of IE explains as shown in table 2 in the table 1.

IE/Group name information element/group name claims	The Need type	Multi other	Type and reference reftype	Semantics description describes in detail	The Version version
						6 indications of SIB6 Indicator system information block	MP is essential		The Boolean Boolean type	TRUE indicates that SIB6 is broadcast in the cell.

IE/Group name information element/group name claims	The Need type	Multi other	Typeand reference reftype	Semantics description describes in detail	The Version version
										TRUE (true value) indication broadcast system information piece 6 in this sub-district.
PhyCH information elements Physical channel information elements
						PICH Power offset Page Indication Channel power back-off	MP is essential		PICH Power offset 10.3.6.50 Page Indication Channel power back-off 10.3.6.50
CHOICE mode preference pattern	MP is essential
						＞FDD Frequency Division Duplexing (FDD)
＞＞AICH Power offset AICH Acquisition Indication Channel power back-off	MP is essential		AICH Power offset 10.3.6.3 AICH Acquisition Indication Channel power back-off 10.3.6.3	This AICH Acquisition Indication Channel of This AICH Power offset also indicates the power offset for AP-AICH and for CD/CA-ICH. power back-off is also indicated the power back-off of access point-AICH Acquisition Indication Channel and collision detection and Channel Assignment Indication Channel
						＞TDD time division duplex

IE/Group name information element/group name claims	The Need type	Multi other	Type and reference reftype	Semantics description describes in detail	The Version version
						＞＞PUSCH system information ascending physical signal shared channel system information	OP is optional		PUSCH system information 10.3.6.66 ascending physical signal shared channel system information 10.3.6.66
The system information of＞＞PDSCH system information downlink physical shared channel	OP is optional		The information 10.3.6.46 of PDSCH system information 10.3.6.46 downlink physical shared channel
						＞＞TDD open loop power control time division duplex open Loop Power control	MP is essential		TDD open loop power control 10.3.6.79 time division duplex open Loop Power control 10.3.6.79
The basic Common Control Physical Channel information of Primary CCPCH info	OP is optional		The basic Common Control Physical Channel information of Primary CCPCH info 10.3.6.57 10.3.6.57	Note 1 note 1
						The system information inventory of PRACH system information list Physical Random Access Channel	MP is essential		The system information inventory 10.3.6.55 of PRACH system information list 10.3.6.55 Physical Random Access Channel
Secondary CCPCH system information	MP is essential		Secondary CCPCH system information 10.3.6.72	Note 2 note 2s

IE/Group name information element/group name claims	The Need type	Multi other	Type and reference reftype	Semantics description describes in detail	The Version version
						The Secondary Common Control Physical Channel system information			The Secondary Common Control Physical Channel system information
Discontinuous reception level 1 information of CBS DRX Level 1 information cell broadcaste service	CV-C TCH condition entry-CTCH Common Traffic Channel		The discontinuous reception level 1 information 10.3.8.3 of CBS DRX Level 1 information 10.3.8.3 cell broadcaste service

IE/Group name information element/group name claims	The Need type	Multi other	Type and reference reftype	Semantics description describes in detail	The Version version
						The indication of Frequency band indicator frequency range	OP is optional		Frequency band indicator 10.3.6.35b frequency range indication 10.3.6.35b		REL-6 version 6
Frequency band indicator 2 frequency ranges indication 2	OP is optional		Frequency band indicator 2 10.3.6.35c frequency ranges are indicated 2 10.3.6.35c		REL-6 version 6
						HSDPA cell Indicator sub-district high speed downlink packet inserts indication	MD has the essential option of default value		Enumerated enumerates (HSDPA Capable Cell has the sub-district of high speed downlink packet access capability)	Default is ' HSDPA capability not indicated '. default to " not indicating the high speed downlink packet access capability ".' HSDPA Capable Cell ' means that tbe UE may consider this cell as part of the HSDPA coverage area for display indication only. " sub-district that the high speed downlink packet access capability is arranged " expression subscriber equipment can know that according to the demonstration of indication whether this sub-district is for having at a high speed	REL-6 version 6

IE/Group name information element/group name claims	The Need type	Multi other	Type and reference reftype	Semantics description describes in detail	The Version version
										Downlink grouped inserts the area part that covers.This indication of This indication shall not be used for any other purpose. is not useable for other purpose.
E-DCH cell Indicator sub-district strengthens the dedicated channel indication	MD has the essential option of default value		Enumerated enumerates (E-DCH Capable Cell has the sub-district that strengthens the dedicated channel ability)	Default is ' E-DCH capability not indicated '. ' E-DCH Capable Cell ' means that the UE may consider this cell as part of the E-DCH coverage area for display indication only. " has the residential quarter that strengthens the dedicated channel ability ", and the expression subscriber equipment only can know that according to this demonstration indication whether this residential quarter is for there being the dedicated channel of enhancing overlay area part to default to " indication does not strengthen the dedicated channel ability ". This indication shall not be used for any other purpose. this	REL-6 version 6

IE/Group name information element/group name claims	The Need type	Multi other	Type and reference reftype	Semantics description describes in detail	The Version version
										Indication is not useable for other purpose.
Secondary CCPCH system information MBMS Secondary Common Control Physical Channel system information multimedia broadcasting and multicast service	OP is optional		Secondary CCPCH system information MBMS 10.3.6.72a Secondary Common Control Physical Channel system information multimedia broadcasting and multicast service 10.3.6.72a	S-CCPCH dedicated to MBMS.Note 2 S-CCPCH Secondary Common Control Physical Channels are served multimedia broadcasting and multicast service.Note 2	REL-6 version 6

Table 1

The Condition condition	Explanation explains
		The CTCH CTCH Common Traffic Channel	The IE is mandatory present if the IE " CTCH indicator " is equal to TRUE at least one FACH, if otherwise the IE is not needed in the message. information element " CTCH indicator (CTCH Common Traffic Channel indication) " is a true value, expression has a forward access channel at least, and then this information element is an essential option.Otherwise in message, can not have this information element.

Table 2

In actual applications, such scheme exists following problem: UE possibly can't carry out the high speed uplink of 2ms TTI, and network side can not make the resource allocation of E-DCH reach optimum simultaneously.

Cause the main cause of this situation to be, because according to present agreement, UE can't obtain the TTI ability information of E-DCH from SIB5, the USUPA that UE initiates is professional may to make UE can't carry out the high speed uplink of 2msTTI only with 10msTTI Capability Requirement network side Resources allocation.Therefore, the E-DCH resource allocation of network side does not reach optimum yet.

Summary of the invention

In view of this, the method that main purpose of the present invention is to provide a kind of user equipment start service and selects the sub-district makes UE may carry out the faster high speed uplink that prolongs more in short-term, optimizes the distribution of network side E-DCH resource.

For achieving the above object, the invention provides a kind of method of user equipment start service, comprise following steps:

The information of the TTI ability of broadcasting indication this sub-district E-DCH in the sub-district;

During user equipment start service, according to the described TTI ability information of from Cell Broadcast CB, receiving, the TTI capability requests network side Resources allocation of the E-DCH that all supports with described sub-district and this subscriber equipment.

Wherein, described business is the HSUPA business.

In this external described method, described subscriber equipment by the sub-district E-DCH that will from Cell Broadcast CB, receive the TTI ability and the TTI ability of the E-DCH of this subscriber equipment be complementary, to obtain all the have the ability TTI ability of E-DCH of acceptance of described sub-district and this subscriber equipment.

In this external described method, described sub-district increases new information element in the system information block of being broadcasted, and is used to indicate this sub-district whether 2 milliseconds of TTI of E-DCH are supported.

In this external described method, the value of " E-DCH cellIndicator " information element in the system information block that described sub-district is broadcasted is expanded, and to indicate this sub-district whether E-DCH is supported, and the TTI ability that E-DCH is supported how.

The present invention also provides a kind of subscriber equipment to select the method for sub-district, comprises following steps:

A broadcasts the information of the TTI ability of indication this sub-district E-DCH in the sub-district;

Party B-subscriber's equipment is collected the TTI ability information of E-DCH at least respectively from the broadcasting of two sub-districts, and according to the match condition of the TTI ability of these information and this subscriber equipment E-DCH, selects Serving cell or persistent district from each described sub-district.

Wherein, among the described step B, described subscriber equipment is in sub-district gravity treatment or when start, and according to the TTI ability of the E-DCH of each described sub-district and the match condition of the TTI ability of the E-DCH of this subscriber equipment, one of selection is resident from each described sub-district.

In this external described method, among the described step B, described subscriber equipment is when switching, and according to the TTI ability of the E-DCH of each candidate cell, the candidate cell of TTI capabilities match of E-DCH of preferentially selecting the TTI ability of E-DCH and this subscriber equipment is as Target cell.

In this external described method, among the described step B, when described subscriber equipment is initiated the HSUPA business at needs, match condition according to the TTI ability of the E-DCH of the TTI ability of the E-DCH of each described sub-district and this subscriber equipment, and this HSUPA business selects proper cell to initiate service request to the requirement of the TTI ability of E-DCH.

In this external described method, described sub-district increases new information element in the system information block of being broadcasted, and is used to indicate this sub-district whether 2 milliseconds of TTI of E-DCH are supported.

In this external described method, the value of " E-DCH cellIndicator " information element in the system information block that described sub-district is broadcasted is expanded, and to indicate this sub-district whether E-DCH is supported, and the TTI ability that E-DCH is supported how.

By relatively can finding that the main distinction of technical scheme of the present invention and prior art is, the information of this sub-district of broadcasting E-DCH TTI ability in the sub-district, UE with the sub-district E-DCH TTI ability received as one of foundation of initiating professional and selection sub-district.

Sub-district E-DCH TTI ability information can or be carried in the existing IE of expansion at the newly-increased IE of SIB.

Difference on this technical scheme, brought comparatively significantly beneficial effect, be that UE is when current area is initiated the HSUPA business, because known the E-DCH TTI ability of current area in advance from Cell Broadcast CB, so the E-DCH TTI capability requests network side Resources allocation that can all support with current area and UE, thereby optimized the distribution of network side E-DCH resource.Because know the E-DCHTTI ability of sub-district in advance, can not occur not supporting the failure that causes so initiate service request because of sub-district E-DCH TTI ability, accelerated the speed of professional foundation.Because can set up the HSUPA business with 2ms TTI as much as possible in sub-district and UE, UE may carry out the faster high speed uplink that prolongs more in short-term.

In the cell selecting of UE when sub-district gravity treatment or start, because with the E-DCH TTI ability of each candidate cell as one of foundation of selecting, and preferentially select the sub-district of E-DCH TTI ability and this UE coupling resident, so after this need when initiating the HSUPA business, current area can enjoy E-DCH TTI ability preferably as UE.

UE is when switching, because with the E-DCH TTI ability of each candidate cell as one of foundation of selecting, and preferentially switch to the sub-district of E-DCH TTI ability and this UE coupling, so can satisfy the needs of the current HSUPA business of using better, even the current HSUPA business of not using also can provide E-DCH TTI ability preferably for the HSUPA business that may initiate from now on.

UE need initiate HSUPA when professional, initiates the HSUPA service request by reselecting in the sub-district that E-DCH TTI ability is complementary, and can make UE carry out the faster high speed uplink that prolongs more in short-term.

Description of drawings

Fig. 1 is a method flow diagram of selecting the sub-district according to the UE of first embodiment of the invention;

Fig. 2 is a method flow diagram of selecting the sub-district according to the UE of second embodiment of the invention;

Fig. 3 is a method flow diagram of selecting the sub-district according to the UE of third embodiment of the invention;

Fig. 4 is the method flow diagram of initiating business according to the UE of four embodiment of the invention.

Embodiment

For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.

The TTI ability that the present invention clearly indicates this sub-district E-DCH by the SIB5 in the Extended Cell broadcasting, make when UE initiates business, can be according to the TTI ability information of from Cell Broadcast CB, receiving, the TTI capability requests network side Resources allocation of the E-DCH that all supports with sub-district and this UE; And UE can select the Serving cell or the persistent district that mate more according to the match condition of the E-DCH TTI ability of these information of the broadcasting of each sub-district and this UE.

The method of the UE selection sub-district of first embodiment of the invention as shown in Figure 1, by expanding the IE of cell broadcast messages SIB5 as shown in table 1, in SIB5, introduce new " E-DCH TTI2msCapability (strengthening the 2ms Transmission Time Interval ability of dedicated channel) " IE specifically, as shown in table 3, indicate current area whether E-DCH 2ms TTI is supported exactly.Type that should newly-increased IE is CV, explain particularly as shown in table 4, expression have only when " E-DCH cell Indicator (sub-district strengthens the dedicated channel indication) " should newly-increased IE when IE indication current area is supported E-DCH just effectively.

IE/Group name information element/group name claims	The Need type	Multi other	Type and reference reftype	Semantics description describes in detail	The Version version
						＞E-DCH TTI2ms Capability strengthens the 2ms Transmission Time Interval ability of dedicated channel	CV-EDCH cell Indicato r condition entry-sub-district strengthens the dedicated channel indication		The BOOLEAN Boolean type	True=TTI 10ms and 2ms supported for E-DCH true value represents to strengthen the Transmission Time Interval that dedicated channel is supported 10ms and 2ms.False=only TTI 10ms supported for E-DCH falsity represents to strengthen the Transmission Time Interval that dedicated channel is only supported 10ms.	REL-6 version 6

Table 3

The Condition condition	Explanation
		EDCH cell Indicator sub-district strengthens the dedicated channel indication	The IE shall be present if the EDCH cell Indicator IE is set to " E-DCH Capable Cell " if. the sub-district strengthens the dedicated channel indication information element and is set to " E-DCH Capable Cell (dedicated channel of enhancing ability sub-district is arranged) ", then has this information element.

Table 4

The processing rule that should increase IE newly is as follows:

Ability only is 10ms if E-DCH TTI is supported in the sub-district, and then " E-DCH cell Indicator " is set to " E-DCH Capable Cell ", and " E-DCH TTI2ms Capability " is set to " False ";

Ability is 2ms and 10ms if E-DCH TTI is supported in the sub-district, and then " E-DCH cell Indicator " is set to " E-DCH Capable Cell ", and " E-DCH TTI2ms Capability " is set to " True ";

If E-DCH is not supported in the sub-district, then " E-DCH cell Indicator " do not exist, i.e. default value (E-DCH capability not indicated) is used in expression, and " E-DCH TTI2ms Capability " do not exist yet.

In step 101, the IE parameter of each Cell Broadcast CB sub-district because the expansion of agreement has increased " E-DCHTTI2ms Capability " newly, therefore has the sub-district of E-DCH ability also to broadcast the parameter of this newly-increased IE.

In step 102, UE receives the broadcasting of each sub-district, and preserves the IE parameter of each sub-district.

In step 103,, (surpass predetermined threshold etc. as signal strength signal intensity) in a conventional manner and select the sub-district (can have a plurality of) of coupling when the gravity treatment of UE sub-district or when start.Then, in a plurality of sub-districts of pressing the traditional approach coupling, again according to " E-DCH TTI2ms Capability " newly-increased in the Cell Broadcast CB, preferential selection is resident with the sub-district of the E-DCH capabilities match of UE.Specifically, when UE supported E-DCH 2msTTI, the sub-district of E-DCH 2msTTI was also supported in then preferential selection; When UE only supports 10msTTI, then, do not consider this newly-increased IE according to " the E-DCH cell Indicator " of the sub-district preferential sub-district of selecting to support E-DCH; When UE does not support E-DCH, then press traditional approach fully and select.

In step 104, the resident sub-district that is complementary to the E-DCH ability of UE, and wherein resident.Because in the selection course with the E-DCH TTI ability of each candidate cell as one of foundation of selecting, so after this need when current area be initiated the HSUPA business, can enjoy E-DCH TTI ability preferably as UE.

The method of the UE selection sub-district of second embodiment of the invention as shown in Figure 2, value by original among the Extended Cell broadcast SIB5 " E-DCH cell Indicator " IE, as shown in table 5, indicate current area whether E-DCH is supported exactly, the E-DCH TTI ability of perhaps being supported how.

IE/Group name information element/group name claims	The Need type	Multi other	Type and reference reftype	Semantics description describes in detail	The Version version
						E-DCH cell Indicator sub-district strengthens the dedicated channel indication	MD has the essential option of default value		Enumerated enumerate (10ms, 2ms+10ms)	Default is ' E-DCH capability not indicated ' defaults to " indication does not strengthen the dedicated channel ability " ' 10ms ' means that the cell only supports TTI 10ms for E-DCH. " 10ms " and represents that this sub-district strengthens the Transmission Time Interval that dedicated channel is only supported 10ms.' 2ms+10ms ' means that the cell simultaneously supports both TTI 10ms and 2ms for E-DCH. " 2ms+10ms " represent that this sub-district strengthens the Transmission Time Interval that dedicated channel is supported 2ms and 10ms simultaneously.	REL-6 version 6

Table 5

The processing rule of this IE is as follows after the expansion:

Ability only is 10ms if E-DCH TTI is supported in the sub-district, and then " E-DCH cell Indicator " is set to " 10ms ";

Ability is 2ms and 10ms if E-DCH TTI is supported in the sub-district, and then " E-DCH cell Indicator " is set to " 10ms+2ms ";

If E-DCH is not supported in the sub-district, then " E-DCH cell Indicator " do not exist, i.e. default value (E-DCH capability not indicated) is used in expression.

In step 201, the IE parameter of each Cell Broadcast CB sub-district is owing to expand original in the agreement " E-DCHcell Indicator ", so the E-DCH ability of indicating cell clearly.

Step 202 is similar to step 102.

In step 203, when UE switches,, select the sub-district of coupling according to the IE of Cell Broadcast CB.In the process of coupling, the sub-district of selecting " E-DCH cell Indicator " parameter and UE coupling according to qualifications is as Target cell.

Specifically, when UE supports E-DCH 2msTTI, the then preferential coupling sub-district of selecting to support E-DCH 2msTTI; When UE only supports E-DCH 10msTTI, the then preferential sub-district of selecting to support E-DCH; When UE does not support E-DCH, matching process this IE of reference cell not then.

In step 204, UE switches to Target cell as current service cell.UE is when switching, with the E-DCH TTI ability of each candidate cell as one of foundation of selecting, and preferentially switch to the sub-district of E-DCH TTI ability and this UE coupling, so can satisfy the needs of the current HSUPA business of using better, even the current HSUPA business of not using also can provide E-DCH TTI ability preferably for the HSUPA business that may initiate from now on.

In the above-described embodiment, introduced the extended method of SIB5 in two kinds of agreements, one of ordinary skill in the art will appreciate that, can also adopt other method to expand, as long as can contain the concrete ability information of E-DCH directly or indirectly with regard to core according to the invention.

The method of the UE selection sub-district of third embodiment of the invention adopts the E-DCH TTI ability of the next clear and definite sub-district of method of expansion original " E-DCH cell Indicator " IE as shown in Figure 3.

Step 301 and step 302 are similar to step 201 and step 202 respectively.

In step 303, when UE initiates the HSUPA business at needs, judge according to the E-DCH TTI ability of UE whether current service cell supports this business.If E-DCH TTI ability is complementary, then can directly initiate the HSUPA business in current service cell; Otherwise, need to select the sub-district of coupling to support this business, change step 304 over to.

In step 304, the parameter of each Cell Broadcast CB that UE is preserved according to the E-DCH TTI capability query of self, selection can for this UE service and the sub-district of matching E-DCH TTI ability is arranged is Target cell.Initiate the HSUPA service request in the sub-district that E-DCH TTI ability is complementary by reselecting to, can make UE carry out the faster high speed uplink that prolongs more in short-term.Specifically, if the TTI of the HSUPA business need 2ms that UE initiated, the then sub-district of this requirement of selection support in the sub-district that can serve for this UE; If the TTI of the HSUPA business need 10ms that UE initiated, then selection has the sub-district of E-DCH ability.

In step 305, UE gravity treatment or switch to Target cell, and initiate this HSUPA business to this sub-district.

The method of the UE selection sub-district of four embodiment of the invention also adopts the E-DCH TTI ability of the next clear and definite sub-district of method of expansion original " E-DCH cell Indicator " IE as shown in Figure 4.

In step 401, the Cell Broadcast CB at UE place contains the message of SIB, and indicates the information of the TTI ability of this sub-district E-DCH in broadcasting.

In step 402, UE receives Cell Broadcast CB, and preserves.

In step 403, UE need initiate HSUPA when professional, and the TTI ability of TTI ability by the sub-district E-DCH in the cell broadcast information of will be preserved and the E-DCH of this UE is complementary, to obtain all the have the ability TTI ability of E-DCH of acceptance of sub-district and this UE.For example the E-DCH TTI of 2ms and 10ms is supported in the sub-district, and UE supports the E-DCH TTI of 2ms and 10ms, and then sub-district and UE can both support that E-DCH TTI is 2ms and 10ms; The E-DCH TTI of 10ms is only supported in the sub-district, and UE supports the E-DCH TTI of 2ms and 10ms, and then sub-district and the UE E-DCH TTI that can both support is 10ms.The E-DCH TTI capability requests network side Resources allocation that can all support according to current area and UE of the HSUPA business of the required initiation of UE like this, thus optimized the distribution of network side E-DCH resource.

In step 404, UE initiates the HSUPA business, and the E-DCHTTI capability requests network side Resources allocation of all supporting according to sub-district and this UE, because know the E-DCH TTI ability of sub-district in advance, can not occur not supporting the failure that causes so initiate service request, accelerate the speed of professional foundation because of sub-district E-DCH TTI ability.

In step 405, current service cell is according to the Resources allocation that requires of UE.Because can set up the HSUPA business with 2ms TTI as much as possible in sub-district and UE, UE may carry out the faster high speed uplink that prolongs more in short-term.

Though pass through with reference to some of the preferred embodiment of the invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.

Claims (11)

1. the method for a user equipment start service is characterized in that, comprises following steps:

The information of the TTI ability of broadcasting indication this sub-district E-DCH in the sub-district;

During user equipment start service, according to the described TTI ability information of from Cell Broadcast CB, receiving, the TTI capability requests network side Resources allocation of the E-DCH that all supports with described sub-district and this subscriber equipment.

2. the method for user equipment start service according to claim 1 is characterized in that, described business is the HSUPA business.

3. the method for user equipment start service according to claim 1, it is characterized in that, described subscriber equipment by the sub-district E-DCH that will from Cell Broadcast CB, receive the TTI ability and the TTI ability of the E-DCH of this subscriber equipment be complementary, to obtain all the have the ability TTI ability of E-DCH of acceptance of described sub-district and this subscriber equipment.

4. according to the method for each described user equipment start service in the claim 1 to 3, it is characterized in that described sub-district increases new information element in the system information block of being broadcasted, be used to indicate this sub-district whether 2 milliseconds of TTI of E-DCH are supported.

5. according to the method for each described user equipment start service in the claim 1 to 3, it is characterized in that, the value of " the E-DCH cell Indicator " information element in the system information block that described sub-district is broadcasted is expanded, indicating this sub-district whether E-DCH is supported, and the TTI ability information that E-DCH is supported.

6. the method for a subscriber equipment selection sub-district is characterized in that, comprises following steps:

A broadcasts the information of the TTI ability of indication this sub-district E-DCH in the sub-district;

Party B-subscriber's equipment is collected the TTI ability information of E-DCH at least respectively from the broadcasting of two sub-districts, preferential select resident or preferentially switch to sub-district with the TTI capabilities match of the E-DCH of this subscriber equipment with the sub-district of the TTI capabilities match of the E-DCH of this subscriber equipment.

7. subscriber equipment according to claim 6 is selected the method for sub-district, it is characterized in that, among the described step B, described subscriber equipment is when sub-district gravity treatment or start, according to the match condition of the TTI ability of the E-DCH of the TTI ability of the E-DCH of each described sub-district and this subscriber equipment, preferentially from each described sub-district select a sub-district resident with the TTI capabilities match of the E-DCH of this subscriber equipment.

8. subscriber equipment according to claim 6 is selected the method for sub-district, it is characterized in that, among the described step B, described subscriber equipment is when switching, according to the TTI ability of the E-DCH of each candidate cell, the candidate cell of TTI capabilities match of E-DCH of preferentially selecting the TTI ability of E-DCH and this subscriber equipment is as Target cell.

9. subscriber equipment according to claim 6 is selected the method for sub-district, it is characterized in that, among the described step B, when described subscriber equipment is initiated the HSUPA business at needs, match condition according to the TTI ability of the E-DCH of the TTI ability of the E-DCH of each described sub-district and this subscriber equipment, and this HSUPA business is to the requirement of the TTI ability of E-DCH, and preferential the selection initiated service request with the sub-district of the TTI capabilities match of the E-DCH of this subscriber equipment.

10. select the method for sub-district according to each described subscriber equipment in the claim 6 to 9, it is characterized in that described sub-district increases new information element in the system information block of being broadcasted, be used to indicate this sub-district whether 2 milliseconds of TTI of E-DCH are supported.

11. select the method for sub-district according to each described subscriber equipment in the claim 6 to 9, it is characterized in that, the value of " the E-DCH cell Indicator " information element in the system information block that described sub-district is broadcasted is expanded, indicating this sub-district whether E-DCH is supported, and the TTI ability information that E-DCH is supported.

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