CN101288332B

CN101288332B - Apparatus, method and computer program product to maintain user equipment serving grant at cell change

Info

Publication number: CN101288332B
Application number: CN2006800381721A
Authority: CN
Inventors: B·塞尔比
Original assignee: Nokia Oyj
Current assignee: Nokia Technologies Oy
Priority date: 2005-08-15
Filing date: 2006-08-14
Publication date: 2012-06-20
Anticipated expiration: 2026-08-14
Also published as: TWI300312B; CN101288332A; TW200708149A; ZA200802326B

Abstract

The present invention discloses a method includes storing a first Serving Grant (SG) value for use in a first serving cell, entering a second serving cell, receiving an information element from a higher layer, maintaining the first SG value if the information element does not include a second SG value, and changing the first SG value to the second SG value if the information element includes a second SG value.

Description

In cell change, keep device, method and computer program product that the subscriber equipment service is permitted

Technical field

Exemplary, non-limiting examples of the present invention relates generally to wireless communication system, apparatus and method, more specifically, relates to the cellular wireless communication system techniques that makes subscriber equipment can change to another Serving cell from a Serving cell.

Background technology

Following abbreviation defines as follows:

The DCH dedicated channel

The DPDCH Dedicated Physical Data Channel

The DPCCH Dedicated Physical Control Channel

The up link DCH that EDCH strengthens

The DPDCH that E-DPDCH strengthens

E-RNTI EDCH?RNTI

HARQ mixes automatic repeat requests

The HSUPA High Speed Uplink Packet inserts

The IE information element

MAC-e strengthens the medium access control

The Node B network node, for example, the base station

The RNC radio network controller

RNTI radio net temporary mark

The control of RRC radio resource

SG serves allowance

The UE subscriber equipment, for example, portable terminal

In this concern is to be used for (in for example 3GPP TS 25.309 versions 6, i.e. third generation partner program; The technical specification group Radio Access Network; The FDD enhanced uplink; Summary; In stage 2 (version 6)) the up link DCH (EDCH) of Packet data service.

In HSUPA, the approach of enhancing is at present, and some of packet scheduler function is distributed to each Node B, thus for burst, non real-time business provides than the 3rd layer of RNC (L3, network layer) and dispatches faster.The principle of giving this approach vitality is, through link adaptation faster, might more effectively between packet data user, share uplink power resource.For example, when dividing into groups when a user sends out, institute's scheduled resources just can be used for another user immediately.This technology attempts to avoid the for example peaking variability of the noise rising when high data rate is assigned to the user who moves the burst high data rate applications.

In current framework, packet scheduler is arranged in RNC.Consequently, the ability of the adaptive instantaneous business of packet scheduler is restricted, and this at least partly is attributed to the bandwidth constraint of the RRC signaling interface between RNC and the UE.Therefore, in order to hold this variability, packet scheduler must be when distributing up-link power conservative the behaviour, to consider in next dispatching cycle influence from non-active user.Yet find, height is distributed data rate and long release timer value, this solution effect extreme difference.

Through EDCH, the major part of packet scheduler function is transferred to Node B,, has the node B scheduling machine that is, and the distribution that it is responsible for uplink resource comprises the control to the SG of UE.

SG will be received from RNC through the RRC signaling in the new sub-district of the each entering of UE, perhaps receives SG via the 2nd layer of (L2, data link layer) signaling (absolute grant channel) from serving node B.

Yet, when UE when a sub-district moves to another sub-district, do not have simple method and keep SG.This makes service continuity very difficult, and has limited HSUPA and effectively supported the ability of service to guarantee bit rate.

Further, from the data that receive, RNC can assessment scheduled grant value, and when cell change, it can be included in this value in the RRC signaling.Yet because SG provides the peaked form of DPCCH power ratio with the E-DPDCH that is allowed to use for the data dispatching UE of institute, such assessment is not simple and clear and possibly cause very serious mistake for RNC.In other words, RNC is difficult to the SG value that the assessment Serving cell is using, and therefore, RNC also is difficult in the sub-district and keeps correct SG value between transfer period.

Summary of the invention

According to exemplary embodiment of the present invention; A kind of method comprises that storage is used for permitting (SG) value in first service that first Serving cell uses; Get into second Serving cell; Receive information element from high level, if this information element does not comprise the 2nd SG value then keeps a SG value, if this information element comprises the 2nd SG value then a SG value is changed into the 2nd SG value.

According to another exemplary embodiment of the present invention; A kind of portable terminal comprises the memory that is used for storage first service allowance (SG) value when portable terminal is in first Serving cell; Once getting into second sub-district receives information element from high level device; Confirm whether this information element comprises the device of the 2nd SG value; Keep the device of a SG value if this information element does not comprise the 2nd SG value, the one SG value changed into the device of the 2nd SG value if this information element comprises the 2nd SG value.

According to another exemplary embodiment of the present invention; A kind of program of machine-readable instructions that is implemented in conscientiously on the information bearing medium and can be carried out by digital data processor; Execution is used for the action that (SG) permitted in the service of setting up, wherein, shown in action comprise that storage is used for permitting (SG) value in first service that first Serving cell uses; When getting into second sub-district, receive information element from high level; Confirm whether this information element comprises the 2nd SG value, if this information element does not comprise the 2nd SG value then keeps a SG value, if this information element comprises the 2nd SG value then a SG value is changed into the 2nd SG value.

Description of drawings

In following accompanying drawing:

Fig. 1 shows the simplified block diagram of the various electronic equipments that are applicable to the embodiment of the present invention exemplary embodiment.

Fig. 2 A-2B is closed at this to be referred to be Fig. 2, shows the exemplary embodiment of E-DPDCH of the present invention.

Fig. 3 is a logical flow chart, shows according to exemplary embodiment of the present invention, in the UE at cell change place operation.

Embodiment

Exemplary embodiment of the present invention at least partly relates to and being used for---for example, and 3GPP TS 25.309 versions 6, i.e. third generation partner program; The technical specification group Radio Access Network; The FDD enhanced uplink; Summary; In stage 2 (version 6)---Packet data service provides the enhancing (EDCH) of up link DCH.

At first with reference to figure 1, Fig. 1 shows the simplified block diagram of the various electronic equipments that are applicable to exemplary embodiment of the present.In Fig. 1, wireless network 1 comprises UE 10, Node B (base station) 12 and RNC 14.UE 10 comprises memory (MEM) 10B of data processor (DP) 10A, stored program (PROG) 10C and is used for suitable radio frequency (RF) the transceiver 10D with Node B 12 two-way wireless communications that Node B 12 also comprises DP 12A, the MEM 12B of storage PROG 12C and suitable RF transceiver 12D.Node B 12 is via data path 13 and RNC 14 couplings, and RNC 14 also comprises the MEM 14B of DP 14A and the related PROG 14C of storage.Suppose that PROG10C, 12C and 14C comprise program command, when this instructs associated DP to carry out, electronic equipment is operated according to an exemplary embodiment of the present, will further detail below.As shown in Figure 1, the Uu interface is the interface between UTRAN and the UE, and Iu is the interconnection point between RNC or BSC (base station controller) and 3G (third generation) core network (CN).

Generally; The various embodiment of UE 10 can be including, but not limited to cell phone; PDA(Personal Digital Assistant) with radio communication function has the portable computer of radio communication function, has the image picking-up apparatus (for example digital camera) of radio communication function; Game station with radio communication function; Music storage and playback equipment with radio communication function, the Internet equipment that allows Wi-Fi (Wireless Internet Access) and browse, and comprised portable unit or terminal that this type of function combines.

Embodiments of the invention can also can be realized by hardware by can or being realized by the computer software that other DP carry out by the DP 10A of UE 10 execution, perhaps realized by software and hardware combining.

MEM

10B, 12B and 14B can be any kinds that is fit to local technical environment; And can use any suitable data storage technology realization, the for example memory device of based semiconductor, magnetic memory device and system, light storage device and system, read-only storage and

removable memory.DP

10A, 12A and 14A can be the DP that is fit to any kind of local technical environment; And, can comprise all-purpose computer, special-purpose computer, microprocessor, digital signal processor (DSP) and based in the processor of polycaryon processor framework one or several as non-limiting example.

Now, exemplary embodiment of the present invention is detailed further, the SG value of this UE is determined when UE experience cell change thus.In such embodiment, when carrying out the RRC signaling, it is optional in the E-DPDCH information element that information element (IE) is permitted in service, and when SG IE did not occur, UE 10 kept the SG identical with the SG that before cell change, uses.In alternative embodiment, when the dispatch E-DCH cell information, SG also is optional.

Fig. 2 shows the exemplary embodiment of E-DPDCH information, and Fig. 2 B then shows with the present invention has the service of significant relationship to permit information element (IE).This IE is optional IE according to exemplary embodiment of the present invention just, and for example designated through " needs " of OP (optional) attribute.When UE 10 experience EDCH Serving cells changed, whether the high level of communicate by letter with UE 10 utilized the SG value to dispose MAC-e being used in the new sub-district, and indicate UE 10 should use its secondary E-RNTI to monitor absolute grant message.More specifically, which E-RNTI high-rise indication UE when getting into new sub-district should monitor, and elementary E-RNTI still is secondary E-RNTI.As employed at this, " high level " refers to the entity of communicating by letter with UE, including, but not limited to Node B and RNC.

Consult Fig. 3, Fig. 3 shows the flow chart of exemplary embodiment of the present.In the cell change incident, UE 10 activates all requested HARQ processes (steps A).UE 10 continues to confirm in the high-level signaling that is received, whether to comprise the IE service is permitted (step B).The form of this high-level signaling is including, but not limited to RRC signaling and the signaling carried out via the L2 data link layer.Permit if comprise the IE service in the high-level signaling, UE 10 just accepts indicated value, and gets into new sub-district (step C) with indicated SG value.Particularly, the Serving_Grant of UE 10 and Primary_Grant_Available state variable are set to the value that provided by high level.

Yet, not permitting if do not comprise the IE service in the high-level signaling, current SG is constant, and UE gets into new sub-district (step D) with SG used in the old sub-district.Particularly, UE 10 is stored in the Value Operations in Serving_Grant and the Primary_Grant_Available state variable before continuing to use.

Under any situation (step C or step D), UE 10 continues state variable Stored_Secondary_Grant is initialized as " Zero_Grant ".

In initial the access, if permitting IE, service do not occur, SG can use default value, for example Minimum_Grant or Zero_Grant.Perhaps, insert because RRC control is initial, it possibly always comprise and be used to serve the value of permitting IE, for example a value that equates with Minimum_Grant or Zero_Grant.

In exemplary embodiment of the present invention, can notice that UE 10 can change the sub-district in same Node B.In this case, old Serving cell can both be at inner shared data with new Serving cell.In this case, these two Serving cells can exchange about UE 10 and switch to the relevant SG information of another sub-district from a sub-district, and need not carry out the change of the current SG value of UE 10.

Said based on preamble; Apparently, this exemplary embodiment of the present invention provides a kind of method, device and computer program, to confirm that service permits whether being assigned to UE in cell change; Use should be specified SG value, and whether did not use the currency of this SG during the new sub-district of entering.

In general, can realize various embodiment with hardware or special circuit, software, their any combination of logic OR.For example, can realize with hardware aspect some, and other aspects can realize with controller, microprocessor or the executable firmware of other calculating devices or software, although the present invention is not limited to this.Although various aspects of the present invention can represent and describe with block diagram, flow chart or other diagrammings, should understand module described herein, device, system, technology or method and can be used as non-limiting example and combine to realize with certain of hardware, software, firmware, special circuit or logic, common hardware or controller or other calculating devices or they.

Embodiments of the invention can be carried out in each parts of for example integrated circuit modules.The design of integrated circuit is the process of high automation substantially.Can use complicated and powerful Software tool is converted into semiconductor circuit design with electrical logic design, in order to etching forming on the semiconductor-based end.

Program (program that is for example provided by Synopsys company that is positioned at Mountain View city, California and the Cadence Chevron Research Company (CRC) that is positioned at San Jose city, California) is used the perfect design rule and the design module storehouse that prestores, automatic route lead and positioning element on semiconductor chip.In case semiconductor circuit design is accomplished, design result can be sent to semiconductor production factory with standard electronic form (for example Opus, GDSII are like that) or " processing factory " produces.

To the those skilled in the art, can understand various modifications and adjustment in conjunction with the aforementioned description of advantages.Yet, to whole modifications of the present invention instruction still in the scope of non-limiting examples of the present invention.

In addition, some characteristics of various non-limiting examples of the present invention possibly used by preferential, and need not the corresponding use of other characteristics.Like this, preamble is said should only be regarded as the explaination to the principle of the invention, instruction and exemplary embodiment.

Claims

1. method that is used in the wireless communication system comprises:

The service allowance value that storage is associated with first Serving cell;

In the process of transferring to second Serving cell, receive information element;

If said information element does not comprise any service allowance value, then keep said service allowance value to be used in said second Serving cell; And

If said information element comprises service allowance value, will replace said service allowance value to be used in said second Serving cell;

Wherein serve the maximum power ratio of the Dedicated Physical Data Channel of allowance value indication enhancing to Dedicated Physical Control Channel.

2. the method for claim 1, wherein said reception comprises from radio network controller and receives said information element.

3. method as claimed in claim 2, wherein, said information element receives via radio resource control signaling.

4. the method for claim 1, wherein said reception comprises from Node B and receives said information element.

5. the described method of claim 4 comprises via radio resource control signaling receiving said information element.

6. the method for claim 1 is wherein served the absolute grant message that the indication of allowance value should be monitored.

7. device that is used in the wireless communication system comprises:

Be used to store the device of the service allowance value that is associated with first Serving cell; And

Be used in the process of transferring to second Serving cell from said first Serving cell, receive the device of information element;

Be used for confirming whether said information element comprises the device of service allowance value;

Be used for not comprising any service allowance value is kept said service allowance value at said second Serving cell device in response to definite said information element; And

Be used for comprising service allowance value in response to definite said information element, the service allowance value that the service allowance value of being stored is changed into the information element that is received is to be used in the device in said second Serving cell;

8. device as claimed in claim 7 is implemented in the subscriber equipment.

9. device as claimed in claim 8, said wireless communication system are the High Speed Uplink Packet access to wireless communication system.

10. device as claimed in claim 7, wherein said information element receives from Node B.

11. device as claimed in claim 7, the wherein said at least device that is used for confirming, the said device that is used to keep and the said device that is used to change are embodied in integrated circuit.

12. device as claimed in claim 7 is wherein served the absolute grant message that the indication of allowance value should be monitored.