CN1798418A - Method for configuring resource of EUDCH in advance - Google Patents
Method for configuring resource of EUDCH in advance Download PDFInfo
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- CN1798418A CN1798418A CN 200410061504 CN200410061504A CN1798418A CN 1798418 A CN1798418 A CN 1798418A CN 200410061504 CN200410061504 CN 200410061504 CN 200410061504 A CN200410061504 A CN 200410061504A CN 1798418 A CN1798418 A CN 1798418A
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Abstract
The method includes following steps: SRNC sends message to Node B to request for building new radio link; Node B pre-configures the EUDCH resources, and notifies the pre-configured EUDCH resources to SRNC in a returned message; SRNC sends the message to UE to notify the pre-configured resources to UE. By using the invention, when a link is built, the resources of E-AGCH, E-RNTI, and E-RGCH/E- HICH required to be configured for the UE by the cell taken as service cell, and the resources of E-RGCH/E-HICH required to be configured for the UE by the cell taken as non-service cell, was configured, and was sent to the UE. When the service cell is selected based on UE, the UE has already saved the E_AGCH channel of new service cell and configuration of E-RGCH/E-HICH channel, and known the new E-RNTI; so it is unnecessary to get new service cell from network side.
Description
Technical field
The present invention relates in the WCDMA system that supports EUDCH, when setting up new Radio Link, Node B allocates the resource that EUDCH uses in advance, and is notified to the pre-configured information of user by SRNC.
Background technology
3-G (Generation Three mobile communication system) is all to providing two-forty, high-quality data packet services to carry out standardization.For example: 3GPP is carrying out standardization to HSDPA (High Speed Downlink Access), thereby improves descending data rate, and 3GPP2 is carrying out standardization to 1xEV-DV (Evolution-Data and Voice).3GPP proceeds the enhancing (EUDCH) of ascending packet data transmission again, thereby improves up capacity and covering.EUDCH compares with the up DCH of Rel99/4/5, introduced HARQ (Hybrid Automatic Retransmission Request) mechanism, and consider to use the TTI (Transmission TimeInterval) shorter than the up DCH of Rel99/4/5, for example the same with HSDPA is 2ms.TTI is defined as the time interval of transmission channel to the physical channel transfers data.
Introduced HARQ mechanism among the EUDCH, controlled whether retransmission data of UE by Node B.Dotted line among Fig. 1 is represented the transmission of packet.Node B receives the data that UE sends, if can correct decoding, Node B sends ACK indication UE data and correctly receives, and next same process (process) can send new data.The correct data that receive are issued RNC, by RNC data are sorted.If Node B does not have correct decoding, Node B sends NAK indication UE, will retransmit these data at a same process.Node B merges data of retransmitting and the data that send first, if the energy correct decoding, the data of Node B after correct decoding send to RNC.
Under SHO (soft handover) state, have only a sub-district can send absolute dispatching command and relative dispatching command, other sub-district can only send relative dispatching command.The sub-district that can send absolute dispatching command is the Serving cell of UE, Serving cell is according to the upstream rate of power situation with the amount decision user needs that send data of UE, service Node B can send the maximum of absolute dispatch control UE transmission rate, can also send relative dispatch to the user and make user's speed increase or reduce a predetermined stride.Concerning this UE, Serving cell need provide absolute scheduling channel (hereinafter to be referred as E-AGCH), be used for sending absolute dispatch, one relative scheduling channel (hereinafter to be referred as E-RGCH) is provided in addition, be used for sending relative dispatch, general, this E-RGCH is special-purpose, is used for sending three information, and one is to advance the speed, one is changing down, a DTX.Non-service cell need provide E-RGCH, and is general, and this E-RGCH is public, is used for sending two information, and an information is that non-service cell is busy, and another is that non-service cell is not minded the user velocity increase.Serving cell and non-service cell all need to send affirmation (ACK/NAK) response to the user, and ACK/NAK sends by acknowledgement channel (hereinafter to be referred as E-HIGH), and E-HIGH and E-RGCH use same spreading code.
Solid line among Fig. 1 has been described the process of Node B to the scheduling of UE.All having only a sub-district with Node B1 and Node B2 below is example, and promptly Node B1 and Node B2 are equal to the sub-district.
Node B1 is user's a Serving cell, can send absolute dispatch to UE by E-AGCH.The E-AGCH channel may be a shared channel, all is to transmit on E-AGCH to user's absolute dispatch.In order to distinguish different users, need distribute a sign to the user, this sign can be in cell range the unique identification user, this sign is E-RNTI, is that the Node B by the Serving cell place distributes.The E-AGCH channel may comprise two parts, and one is user ID, and one is dispatch.Node B1 can also utilize the E-RGCH channel to send relative dispatch to UE, sends ACK or NAK indication by E-HICH
Node B2 is user's a non-service cell, can not send absolute dispatch to the user.Node B2 can come to send relative dispatch to UE by the E-RGCH channel.Send ACK or NAK indication by E-HICH.
Serving cell is always selected sub-district up or that downlink signal quality is good.When the signal quality variation of Node B1, and the signal quality of Node B2 improves, arrived to a certain degree after, Serving cell just need convert Node B2 to from Node B1.
At present, there are two kinds of methods to select Serving cell, a kind of is to be selected by network, SRNC selects a measured sub-district of matter as Serving cell according to the measurement report of UE or Node B.Another is to be selected by UE, and UE perhaps according to the affirmation response of receiving within a certain period of time what, decides Serving cell according to the quality of down channel.UE is included in the sign of new Serving cell among the Mac-e PDU, receive the affirmation of new Serving cell and old Serving cell as UE after, UE just begins to switch under the control of new Serving cell.
Fig. 2 is by the method for selecting the sub-district based on the user.
201 steps, UE selects a new Serving cell.The sign of new Serving cell is included among the Mac-e PDU, sends to all sub-districts that are positioned at below the SHO.
202 steps, if new Serving cell is correctly received this Mac-e PDU, then new Serving cell sends acknowledge message to UE.Begin then to dispatch to the user as Serving cell.
203 steps, if old Serving cell is correctly received this Mac-e PDU, then old Serving cell sends acknowledge message to UE.Stop then dispatching to the user as Serving cell.
The shortcoming of selection Network Based sub-district is that delay is long, is switching under the new sub-district, and network need reconfigure the resource of use, and signaling needs mutual, cause delay longer.Selecting the sub-district based on UE is the sign of notifying new Serving cell by Mac-e PDU, and when UE receives the affirmation message that old Serving cell and new Serving cell are sent, the process that Serving cell is selected just is through with.Like this, just there is not the participation process of network, so, if new Serving cell and old some configuration of service message are different, do not have the participation of network, the user does not just know the information of the EUDCH control channel that will use in new Serving cell in the process that Serving cell switches.
Summary of the invention
The objective of the invention is by when Radio Link is set up, the resource of the control channel of pre-configured EUDCH solves based on UE and selects Serving cell, can not obtain the problem of the configuration under the new Serving cell in the process of cell selecting.For the scheme of selection Serving cell Network Based, in the handed over service sub-district, only need notify the sign of new Serving cell, can reduce delay.
For achieving the above object, a kind of method of pre-configured EUDCH resource comprises step:
SRNC sends message to Node B, requires to set up new Radio Link;
The pre-configured EUDCH resource of Node B, and give SRNC the resource notification of pre-configured EUDCH by return messages;
SRNC sends message to UE, the resource of the pre-configured EUDCH of notice UE.
By the present invention, when setting up link, being configured the sub-district need be to the E-AGCH of UE configuration as Serving cell, E-RNTI, the resource of E-RGCH/E-HICH, need dispose the resource of E-RGCH/E-HICH to UE as non-service cell with the sub-district, and be notified to UE, when selecting Serving cell based on UE, UE has preserved the E-AGCH channel of new Serving cell, the configuration of E-RGCH/E-HICH channel, and know new E-RNTI, do not need to obtain from network terminal, UE switches to new Serving cell, can work normally.When selection Serving cell Network Based, network only needs the sign of the Radio Link of notification service to give UE, can reduce the delay that signaling is brought.
Description of drawings
Fig. 1 is the process of transfer of data among the EUDCH;
Fig. 2 is based on the Serving cell of UE and selects flow process;
Fig. 3 is the signaling process of the pre-configured resource of the present invention.
Embodiment
According to the present invention, when setting up new Radio Link, pre-configured some the EUDCH information of Node B, and give UE pre-configured resource notification by SRNC.
Is the same with some relevant information of EUDCH at Serving cell and non-service cell, EUDCH channel such as the transmission data has just configured when setting up Radio Link, after UE has switched Serving cell, configuration does not change yet, and such information does not need to dispose in advance.That some resource is distributed to UE as Serving cell in the sub-district and what distribute to UE as non-service cell is different, in the time of UE handed over service sub-district, new Serving cell converts the Serving cell of UE to from the non-service cell of UE, before switching, what UE used is that the sub-district is as the resource of non-service cell to the UE configuration, after switching, what UE used is the resource that the sub-district is distributed to UE as Serving cell.Therefore, though when setting up new link, the sub-district at link place may not be the Serving cell of UE, also needs the pre-configured resource that must dispose during as the Serving cell of UE when this sub-district.If when setting up new link, carried out the switching of Serving cell simultaneously, the sub-district at link place is as the Serving cell of UE, the resource that need dispose when needing this sub-district of configuration as Serving cell, the resource that must dispose when simultaneously, also needing pre-configured this sub-district as the non-service cell of UE.Such information has E-AGCH, E-RNTI, E-RGCH, E-HICH.
The E-AGCH channel is public, share in other words conj.or perhaps, not user configured for certain specially, therefore, when when a new Radio Link is set up for certain user in a sub-district, the E-AGCH channel is likely to have been set up, and SRNC has preserved the configuration of the E-AGCH of this sub-district, when SRNC sends signaling to Node B, when requiring to set up Radio Link, can indicate the information that does not need E-AGCH, like this, Node B does not need to comprise the information of E-AGCH in return messages, still, concerning UE, SRNC need be notified to UE to the information of the E-AGCH of this sub-district use of preserving.If SRNC does not preserve the configuration of the E-AGCH of this sub-district, when SRNC transmission signaling requires to set up Radio Link to NodeB, indication needs the information of E-AGCH, Node B is included in the configuration information of the E-AGCH that has set up and is notified to SRNC in the return messages, is notified to UE by SRNC then.Have only when this user be first user under this sub-district, when SRNC transmission signaling requires to set up Radio Link to NodeB, Node B need distribute the E-AGCH channel resource, and being configured in of E-AGCH is notified to SRNC in the return messages, SRNC is notified to UE to the E-AGCH relevant configuration information then.
The resource of E-RGCH/E-HICH comprises the spreading code of use, to the signature of UE distribution.E-RGCH and E-HICH use same spreading code, use different signatures.The number of signature is limited, and therefore, sub-district is if the non-service cell of UE, and concerning E-RGCH, a public signature will be distributed to the user in the sub-district.Concerning E-HICH, Serving cell and non-service cell all are special-purpose signatures to user's distribution.When a sub-district became the Serving cell of UE by the non-service cell of UE, one group of new E-RGCH will be distributed to UE in this sub-district, and the signature of E-HICH also might distribute a new spreading code.Conversely, when a sub-district became non-service cell by Serving cell, one group of new E-RGCH will be distributed to UE in this sub-district, and the signature of E-HICH, spreading code also might change.
When SRNC set up new Radio Link, the sub-district at new Radio Link place might be as the Serving cell of UE, also might be as the non-service cell of UE.Therefore, in pre-configured method of the present invention, when SRNC set up a new Radio Link for the user, Node B need distribute the resources of two cover E-RGCH/E-HICH to the user.One cover is the resource of the E-RGCH/E-HICH that distributes to UE as the Serving cell of UE of the sub-district at new Radio Link place, and a cover is the resource of the E-RGCH/E-HICH that distributes to UE as the non-service cell of UE of the sub-district at new Radio Link place.
Certainly, if sub-district of agreement regulation is identical for the resource of the E-RGCH/E-HICH of UE distribution as the role of the Serving cell of UE with this sub-district for the resource of the E-RGCH/E-HICH of UE distribution as the role of the non-service cell of UE, that is concerning E-RGCH/E-HICH, when setting up Radio Link, just need the resource of configuration one cover E-RGCH/E-HICH.
Node B distributes unique sign a: E-RNTI for each EUDCH user.E-RNTI is unique in the sub-district, and Serving cell uses E-RNTI dispatched users on the E-AGCH channel, to non-service cell, does not use E-RNTI.In the present invention, E-RNTI also need be pre-configured when setting up Radio Link, and this sign is that Node B distributes, and is notified to SRNC in the response message that Radio Link is set up, and SRNC gives UE by the RRC message informing then.
In other words, when RNC sets up a new Radio Link for the user, Node B needs pre-configured: the relevant information of E-AGCH, E-RNTI, the sub-district is two relevant informations of overlapping E-RGCH/E-HICH that UE distributes as Serving cell and non-service cell respectively, and be notified to SRNC, SRNC is notified to UE to this information then.
Embodiment
Fig. 3 is embodiments of the invention.RNC is when setting up new Radio Link, and Node B is the pre-configured E-AGCH of UE, E-RNTI, and the sub-district is the related resource of the E-RGCH/E-HICH of UE distribution as Serving cell and non-service cell respectively.When selecting Serving cell based on UE, following process is necessary.When selecting Serving cell based on UTRAN, can be when network be reselected Serving cell, give the user new configuration notification, also can when setting up new Radio Link, use following process, be the pre-configured E-AGCH of UE, E-RNTI, the sub-district is as the relevant information of the E-RGCH/E-HICH of Serving cell and non-service cell, like this, when network was reselected Serving cell, the signaling of use was just very simple.
301 steps: EUDCH user's Serving cell is positioned at the sub-district below the Node B1, and the control RNC of Node B1 and Serving RNC all are the SRNC among the figure.SRNC need set up a new Radio Link, and new Radio Link is positioned at the sub-district below the control of NodeB2, and the control RNC of NodeB2 is the DRNC among the figure, and Serving RNC is the SRNC among the figure.SRNC sends the signaling Radio Link and sets up request to DRNC.
302 steps: after DRNC receives, send the Radio Link demand signalling to the sub-district below the Node B2.
303 steps: the sub-district below the Node B2 is the pre-configured resource of EUDCH user, distributes the unique user ID E-RNTI in the cell range.Set up the E-AGCH channel if having or not in this sub-district, Node B sub-district for this reason sets up the E-AGCH channel.And in return messages, notify SRNC.If set up E-AGCH in the sub-district, and the signaling indication that SRNC sends needs E-AGCH information, Node B will comprise the information notice SRNC of E-AGCH in return messages.If set up E-AGCH in the sub-district, and SRNC preserved the E-AGCH information of this sub-district, and the signaling indication that SRNC sends does not need the information of E-AGCH, and then Node B does not need to comprise the information of E-AGCH in return messages.
Sub-district below the Node B2 need be set up the resource of two cover E-RGCH/E-HICH for the user, the resource of the resource of the one cover E-RGCH/E-HICH that to be this sub-district distribute to UE as the role of UE Serving cell, the cover E-RGCH/E-HICH that to be this sub-district distribute to UE as the role of UE non-service cell.
If agreement regulation UE is identical with the E-RGCH/E-HICH channel that non-service cell uses at Serving cell, the sub-district below the Node B2 only need dispose the resource of one group of E-RGCH/E-HICH.
Node B2 sends response message to DRNC, comprises in the message: the E-AGCH channel configuration, and E-RNTI, the sub-district is two relevant informations of overlapping E-RGCH/E-HICH that UE distributes as Serving cell and the non-service cell of UE respectively.
304 steps, DRNC is transmitted to SRNC to the response message that the sub-district below Node B2 sends, and is the sub-district below the Node B2 that the resource notification that EUDCH distributes is given SRNC.
305 steps, SRNC sends activating set updating message to the user, and this message comprises the configuration of new Radio Link.SRNC also needs to tell UE pre-configured resource, will comprise the resources of the two cover E-RGCH/E-HICH that distribute for the user sub-district below the Node B2 in this message, E-AGCH and E-RNTI.
In the method for selection Serving cell Network Based, if at this moment, SRNC determines that the sub-district below the service NodeB1 switches to the sub-district at the Radio Link place that increases newly under the Node B2, and this RRC message that SRNC sends also comprises the sign of new Serving cell.The sign of new Serving cell can identify with existing Radio Link.
Selecting in the method for Serving cell based on UE, UE will preserve pre-configured resource, when UE selects a new Serving cell, just can obtain needed information from the information of preservation.
The information element of table one need be included in Iub, sets up in relevant the receiveing the response, specifically with Radio Link on the Iur interface, be exactly that Radio Link is set up response, Radio Link increases response, and Radio Link reconfigures and is ready to, and Radio Link reconfigures response.When setting up Radio Link, SRNC sends in the message of Node B, comprises an indication that whether needs E-AGCH information, according to this indication, whether Node B decision will comprise the information of E-AGCH in receiveing the response, so E-AGCH information is optional to receiveing the response.
The information element of table two need be included on the wave point and set up in the relevant message with Radio Link, such as the activating set updating request message, and physical channel configuring request etc.Adopting pre-configured method of the present invention, the information element of table two all is a forced type.
Table one Node B issues needs the information element that comprises in the message of SRNC
| Information element | Presen ce | Describe |
| The E-E-AGCH spreading code | O | Indication according in the message of SRNC-＞Node B determines whether comprising this information element |
| E-RNTI | M | |
| E-RGCH/E-HICH spreading code as Serving cell | M | |
| E-E-RGCH Sequence Number as Serving cell | M | |
| E-E-HICH Sequence Number as Serving cell | M | |
| E-E-RGCH/E-E-HICH spreading code as non-service cell | M | |
| E-E-RGCH Sequence Number as non-service cell | M | |
| E-E-HICH Sequence Number as non-service cell | M |
Table two SRNC issues needs the information element that comprises in the message of UE
| Information element | Presen ce | Describe |
| The E-E-AGCH spreading code | M | |
| E-RNTI | M | |
| E-RGCH/E-HICH spreading code as Serving cell | M | |
| E-E-RGCH Sequence Number as Serving cell | M | |
| E-E-HICH Sequence Number as Serving cell | M | |
| E-E-RGCH/E-E-HICH spreading code as non-service cell | M | |
| E-E-RGCH Sequence Number as non-service cell | M | |
| E-E-HICH Sequence Number as non-service cell | M |
Claims (7)
1. the method for a pre-configured EUDCH resource comprises step:
SRNC sends message to Node B, requires to set up new Radio Link;
The pre-configured EUDCH resource of Node B, and give SRNC the resource notification of pre-configured EUDCH by return messages;
SRNC sends message to UE, the resource of the pre-configured EUDCH of notice UE.
2. by the described method of claim 1, it is characterized in that the pre-configured resource of described EUDCH is in Iub, Iur and air interface transmission.
3. by the described method of claim 1, it is characterized in that the resource of described pre-configured EUDCH comprises the relevant information of using the sub-district of E-AGCH.
4. by the described method of claim 1, it is characterized in that the resource of described pre-configured EUDCH comprises the E-RNTI that the sub-district is distributed to UE.
5. by the described method of claim 1, it is characterized in that the resource of described pre-configured EUDCH comprises the relevant information of E-RGCH/E-HICH of cell allocation.
6. by the described method of claim 1, it is characterized in that the information of described pre-configured EUDCH comprises the configuration information of two groups of E-RGCH/E-HICH, the resource of the E-RGCH/E-HICH that the resource of the E-RGCH/E-HICH that to be respectively the sub-district distribute to UE as the Serving cell of UE and sub-district are distributed to UE as the non-service cell of UE.
7. by the described method of claim 1, it is characterized in that SRNC sends in the message of Node B and comprise the indication that whether needs E-AGCH information.
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| WO2010051782A1 (en) * | 2008-11-04 | 2010-05-14 | 华为技术有限公司 | An informing method, a device and a system for switching serving cells |
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| WO2010051782A1 (en) * | 2008-11-04 | 2010-05-14 | 华为技术有限公司 | An informing method, a device and a system for switching serving cells |
| AU2009311082B2 (en) * | 2008-11-04 | 2013-01-31 | Huawei Technologies Co., Ltd. | Method, Apparatus and System for Informing a Serving Cell Handover |
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