WO2008003264A1

WO2008003264A1 - A method and apparatus for realizing e-dch wireless link operation

Info

Publication number: WO2008003264A1
Application number: PCT/CN2007/070204
Authority: WO
Inventors: Sheng Liu
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2006-06-29
Filing date: 2007-06-29
Publication date: 2008-01-10
Also published as: CN101317471A; CN100414857C; CN101005311A

Abstract

A method for realizing enhanced dedicated channel (E-DCH) wireless link operation in mobile communication field includes the following content: configuring the reference channel scrambling code of E-DCH in BS node, the BS node performs the E-DCH wireless link operation by using the reference channel scrambling code, and avoids to transmit the downlink control channel scrambling code of the E-DCH wireless link to the wireless network controller. The present invention also includes a BS node and a wireless network controller. The solution of the present invention can ensure the correctness of configuring the E-DCH downlink control channel.

Description

Method and device for realizing enhanced dedicated channel wireless link operation This application claims to be submitted to China Patent Office on June 29, 2006, application number 200610100826.0, and the invention name is "E-DCH wireless link configuration method" Priority of the patent application, the entire contents of which is incorporated herein by reference.

Technical field

The present invention relates to the field of mobile communications, and in particular, to a method for enhancing an enhanced dedicated channel ("E-DCH") radio link operation, and a base station node and a radio network controller.

Background technique

The Universal Mobile Telecommunications System ("Medical TS") is compatible with existing legacy GSM systems. The GSM system will transition to the medical TS in stages. The General Packet Radio Service ("GPRS"), which has been introduced now, provides connectionless services to the GSM network, expands the service functions and flexibility of the GSM system, and improves the transmission rate of packet data. It is a "2.5 generation GSM" mobile communication and is gradually transitioning to the third generation mobile communication system (UMTS).

The main functions of the UMTS Terrestrial Radio Access Network (UTRAN) include radio resource management, mobile management such as handover management, radio access bearer, security management, and location service management. Wait.

As shown in Fig. 1, a base station node ("Node B") 11 and a radio network controller (Radio Network Controller, "RNC") 12 are included in the UTRAN.

Among them, one Node B11 contains one or more cells. The interface between the Node B11 and the RNC 12 is a lub interface, and the interface between the RNCs 12 is a lur interface. The interface between the RNC 12 and the Core Network (CN) 13 is an Iu interface, and the RNC 12 and the Node B 11 controlled by the RNC 12 are configured. The Radio Network Subsystem ("RNS") is shown in the dotted line in Figure 1. The RNS and the User Equipment ("UE") are connected through a Uu interface (not shown), that is, an air interface.

The following is a brief introduction to the Serving Radio Network Subsystem ("SRNS") and the Serving Radio Network (Serving Radio Network). Controller, referred to as "SRNC"), the migration of the wireless network subsystem (Drift Radio Network Subsystem, "DRNS"), the migration of the radio network controller (DRRC) ₀ for a connection between the UE and the UTRAN, Its RNS is called SRNS, and the corresponding RNC is called SRNC. When the UE moves beyond the cell coverage of the SRNS, the UTRAN allows the SRNS to connect with the migrating RNS (DRNS) that provides radio resources for the UE through the Iur interface, thereby providing access services for the UE, and corresponding RNCs in the DRNS. It is called a migration RNC (DRNC for short).

The control plane signaling of the Iub and Iur interfaces of UTRAN is the Node-B Application Part ("NBAP") and the Radio Network Sub-system Application Part (RNSAP). . One of their main functions is to support the establishment/addition/reconfiguration/deletion of wireless links. The RNC controls the Node B controlled by the NBAP signaling. When the UE moves beyond the coverage of the SRNS, the SRNC controls the DRNS through the RNSAP signaling.

The above description of the composition of the medical TS is described in detail, followed by a more detailed description of the E-DCH.

E-DCH is also called High Speed Uplink Packet Access (HSUPA). The following describes the uplink and downlink physical channels related to E-DCH.

The uplink physical channel related to the E-DCH includes an E-DCH Dedicated Physical Data Channel (E-DCH Dedicated Physical Data Channel, referred to as "E-DPDCH") for carrying user data, and a bearer demodulation receiving E-DPDCH. E-DCH Dedicated Physical Control Channel (E-DPCCH)

The downlink physical channels related to the E-DCH are control channels, and include an E-DCH Absolute Grant Channel (E-DCH Absolute Grant Channel, referred to as "E" for carrying an absolute authorization command of an E-DCH serving cell that controls an uplink transmission resource. -AGCH"), an E-DCH Relative Grant Channel (E-DCH Relative Grant Channel, referred to as "E-RGCH") for carrying a relative grant command for controlling uplink transmission resources, and an acknowledgment/non-confirmation for carrying Node B E-DCH Hybrid ARQ Indicator Channel (E-HICH) for information (ACK/NACK) _0, where the relative grant includes the E-DCH service radio link set (Radio Link) Set, abbreviated as "RLS"), the Relative Grant ("RG") command and the RG command of the E-DCH Non-Service Radio Link ("Radio Link"). The frame structure of the above three downlink physical channels will be further described below with reference to FIG. E-AGCH is a downlink common physical channel with a fixed rate Spreading Factor ("SF") of 256. As shown in FIG. 2, one frame of the E-AGCH channel includes 15 time slots, and each of the three time slots constitutes one subframe. As described above, the E-DCH supports two modes of 10 ms TTI and 2 ms TTI, where, for 2 ms TTI In the mode, the E-DCH absolute grant command for one UE is transmitted by one subframe. For the 10 ms TTI mode, the E-DCH absolute grant command for one UE is transmitted by one frame.

E-RGCH and E-HICH are dedicated physical channels with fixed rates and the same frame structure, as shown in Figure 3. Due to the similarity in frame structure between E-RGCH and E-HICH, the two channels share the same downlink channel code for one UE.

In existing NBAP and RNSAP technologies related to E-DCH, E-DCH radio links can be implemented through radio link establishment, radio link addition, synchronous radio link reconfiguration, and asynchronous radio link reconfiguration. Operations such as establishing, adding, reconfiguring, or deleting.

The NBAP and RNSAP messages involved in the above processes include messages initiated by CRNC and SRNC, and successful/unsuccessful response messages returned by the corresponding Node B and DRNS. Specifically, the messages initiated by CRNC and SRNC include:

"RADIO LINK SETUP REQUEST" message,

"RADIO LINK ADDITION REQUEST" message,

The "RADIO LINK RECONFIGURATION PREPARE" message, the "RADIO LINK RECONFIGURATION REQUEST" message, and the success response message returned by Node B and DRNS contain:

"RADIO LINK SETUP RESPONSE" message,

"RADIO LINK ADDITION RESPONSE" message,

The "RADIO LINK RECONFIGURATION READY" message, the "RADIO LINK RECONFIGURATION RESPONSE" message, and the unsuccessful response message returned by Node B and DRNS contain:

"RADIO LINK SETUP FAILURE" message,

"RADIO LINK ADDITION FAILURE" message,

With the "RADIO LINK RECONFIGURATION FAILURE" message. It should be noted that since the Node B is solely responsible for the transmission scheduling control of the E-DCH, it is associated with the E-DCH. The control parameters related to the transmission scheduling control are not assigned by the RNC, and these control parameters are controlled by the Node B itself.

In order to send the above control parameters to the UE through the Radio Resource Control (RRC) message between the RNC and the UE, in addition to the "RADIO LINK RECONFIGURATION FAILURE" message, the success of the above Node B and DRNS returns is not The success response message contains an information element (Informal; ion element, referred to as "IE"): "E-DCH FDD DL Control Channel Information" (translated to "E-DCH FDD downlink control channel information,"), The information element mainly includes information related to the E-DCH radio link downlink control channel, and the specific description of the IE is shown in Table 1. The IE is used to control the transmission scheduling of the E-DCH allocated by the Node B or the DRNS. The associated control channel parameters are returned to the CRNC and finally returned to the SRNC for forwarding by the SRNC to the UE via RRC.

As can be seen from Table 1, the IE contains the IE "E-AGCH And E-RGCH" with the channel parameters (including scrambling code and channelization code) of the E-AGCH, E-RGCH and E-HICH of the corresponding radio link. /E-HICH FDD

Scrambl ing Code" (E-AGCH And E-RGCH/E-HICH FDD scrambling code), "E-AGCH Channel i sat ion Code", "E-RGCH/E-HICH Channel i Sat ion

Code" (E-RGCH/E-HICH channelization code).

Table 1: IE "E-DCH FDD DL Control Channel Information"

IE/Group Name Presence Range IE Type and Reference Semantics Description (information element) (scope) (information element and reference) (semantic description)

Scrambling code on which E-AGCH, E-RGCH

E-AGCH And E-RGCH/E-HICH DL Scrambling Code

And E-HICH are FDD Scrambling Code 0

9.2.2.13 transmitted.

(E-AGCH And (optional) (downlink scrambling code (send E-AGCH, E-RGCH E-RGCH/E-HICH FDD scrambling code) 9.2.2.13) and E-HICH's horse guard)

FDD DL

Channelisation Code

Number

E-AGCH Channelisation

0

Code 9.2.2.14

(optional)

(E-AGCH channelization code) (FDD downlink channel code)

No. 9.2.2.14)

Primary E-RNTI 0 E-RNTI

(Basic E-RNTI) (optional) 9.2.2.13P

Secondary E-RNTI 0 E-RNTI

(Second E-RNTI) (optional) 9.2.2.13P

FDD DL

Channelisation Code

E-RGCH/E-HICH

0 Number

Channelisation Code

(optional) 9.2.2.14

(E-RGCH/E-HICH channelization code)

(FDD downlink channel code

No. 9.2.2.14)

INTEGER

(0.. maxnoof SigSeqE-

E-RGCH Signature Sequence 0 RGHICH - 1)

(E-RGCH signature sequence) (optional) integer

(0.. maxnoof Si gSeqE- RGHICH - 1) INTEGER

(0.. maxnoof SigSeqE-

E-HICH Signature Sequence 0 RGHICH - 1) (E-HICH signature sequence) (optional) integer

(0.. maxnoof Si gSeqE- RGHICH - 1)

(0..37) indicates E-DCH serving grant index as defined in

Serving Grant Value 0 INTEGER (0..37, 38) [32]; index 38 means zero grant (optional) (optional) integer (0..37, 38)

(0..37) indicates the E-DCH service authorization index defined in [32], index 38 indicates zero authorization

Indicates whether the Serving Grant Value is granted with a primary

Pr imary/ Secondary Grant ENUMERATED (Primary,

0 E-RNTI or a secondary Selector Secondary)

E-RNTI

(optional)

(basic / second authorization choice) enumeration (basic, second)

(Indicates whether the basic E-RNT I or the second E-RNTI is used to grant the service authorization value)

E-RGCH Release Indicator 0

9.2.2.131c

(E-RGCH release indication) (optional)

According to the existing related protocol specifications, the scrambling codes of the E-RGCH, E-HICH, and E-AGCH channels of each cell, and the corresponding phase reference common pilot channel (Primary Common Pilot Channel, referred to as "P-CPICH") Or the second common pilot channel (Secondary Common Pilot Channel, referred to as "S-CPICH") has the same scrambling code. Among them, P-CPICH is usually the phase used for channel estimation. The bit reference channel, S-CPICH, is mainly used to support beamforming. The usage of the phase reference S-CPICH is as shown in FIG. 4: First, the capability information such as the CRNC W Node B resource status after the Node B is started establishes the cell of the Node B through the "CELL SETUP REQUEST" NBAP message, if The Node B supports beamforming, and the CRNC will instruct the Node B to establish a corresponding S-CPICH channel through the IE "Secondary CPICH Information" of the message.

Table 2: Message "CELL SETUP REQUEST" Included IE "Secondary CPICH

Inf ormat ion

As shown in Table 2, the IE "Secondary CPICH Information" contains all the information needed to establish an S-CPICH channel, including channel ID (channel number), scrambling code, channel code, transmit power, and whether or not to transmit diversity. Also, "CELL SETUP REQUEST" message also includes "Cell" Portion Information, as shown in Table 3, the role of the IE is to associate the ID of the cell lobe with the corresponding S-CPICH, thereby assigning the corresponding phase reference S-CPICH to each cell lobe. 3: Message "CELL SETUP REQUEST,, contains the IE "Cel 1 Port ion Information"

Still as shown in FIG. 4, the Node B is responsible for performing beamforming related measurements, including Received total wide band power such as cell portion, and Transmitted carrier power of the cell lobes. And other common measurements, as well as special measurements such as Signal to Interference Ratio (SIR) for specific wireless links, and report the measurement results to CRNC through NBAP measurements. In addition, when the UE initially accesses, the Node B will also measure the SIR of the UE in each cell lobe, and pass the ID information of the cell lobes with the highest SIR (ie, the best cell lobes) through the Lub FP (Frame Protocol). A Random Access CHannel (RACH) data frame is reported to the CRNC. Said A cell lobes refers to a particular geographic area in a cell that performs measurements for beamforming.

Furthermore, the CRNC can obtain the best cell lobe information of the UE by using the measurement of the Node B, so as to assign the phase reference S-CPICH corresponding to the best cell lobe to the corresponding radio link of the UE.

It can be seen that the phase reference S-CPICH adopted by the radio link is assigned by the measurement of CRNC » Node B, and as described above, E-RGCH, E-HICH and E of each cell according to the existing relevant protocol specifications. The scrambling code of the -AGCH channel is the same as the scrambling code of the corresponding phase reference P-CPICH or S-CPICH. Therefore, the Node B does not actually select the scrambling code of the E-RGCH, E-HICH and E-AGCH channels, E. The scrambling codes for the -RGCH, E-HICH and E-AGCH channels are determined by the CRNC.

For NBAP, the IE "RL Information" of the NBAP message "RADIO LINK SETUP REQUEST" contains the following IEs:

IE "Primary CPICH Usage For Channel Estimation" (P-CPICH Channel Estimation Usage);

IE "Secondary CPICH Information" (S-CPICH information).

It can be seen that the above two IEs have clearly indicated the relevant information of the phase reference channel used by the wireless link.

On the other hand, the IE "RL Information" in the NBAP message "RADIO LINK RECONFIGURATION PREPARE" contains the following IEs:

IE "Secondary CPICH Information Change".

It can be seen that the above two IEs have clearly defined the phase reference used by the radio link that allows reconfiguration.

For the RNSAP, since the SRNC is not the CRNC of the UE and is not responsible for allocating the radio resources of the DRNS, the phase reference corresponding to the radio link of the UE provided by the DRNS is allocated by the DRNC and returned to the SRNC.

In this case, the RNSAP includes the following IEs in the return messages "RADIO LINK SETUP RESPONSE" of the radio link setup process and the IE "RL Information Response" of "RADIO LINK SETUP FAILURE":

IE "Primary CPICH Usage For Channel Estimation" (P-CPICH Channel Estimation) Meter usage);

IE "Secondary CPICH Information" (S-CPICH information).

At the same time, the RNSAP synchronous radio link reconfiguration process returns a message "RADIO LINK"

The IE "RL Information Response" in RECONFIGURATION READY" also contains the following IEs:

IE "Secondary CPICH Information Change".

The inventor found in the process of implementing the present invention that the IE "E-DCH FDD DL Control Channel Information" of the response message of the existing NBAP, RNSAP and radio link operation related messages (E-DCH FDD downlink control channel information) In the case, the scrambling codes of E-AGCH, E-RGCH and E-HICH are returned to the RNC through the IE "E-AGCH And E-RGCH and E-HICH FDD Scrambling Code".

However, for NBAP, Node B cannot independently select the downlink control channel scrambling codes of E-AGCH, E-RGCH and E-HICH, and the downlink control channel scrambling code is to allocate P-CPICH or S-CPICH reference channels by RNC. Obtained by scrambling code. Therefore, if the E-AGCH, E-RGCH, and E-HICH scrambling codes returned by the Node B to the RNC are incorrect (for example, because of transmission reasons), and the reference channel scrambling code allocated by the RNC is inconsistent, the E-subsequent E- may be caused. DCH radio link related operations (such as E-DCH downlink control channel configuration) are incorrect.

For the RNSAP, if the E-AGCH, E-RGCH and E-HICH scrambling codes returned by the DRNC to the SRNC are not the same as the corresponding phase reference P-CPICH or S-CPICH scrambling codes, it will also cause the subsequent ESR of the SRNC. - DCH radio link related operations (such as E-DCH downlink control channel configuration) are incorrect.

Summary of the invention

The embodiments of the present invention provide a method for implementing an E-DCH radio link operation, and a base station node and a radio network controller, so that the correctness of the E-DCH downlink control channel configuration is ensured.

An embodiment of the present invention provides a configuration method for implementing an enhanced dedicated channel E-DCH radio link operation, where a reference channel scrambling code of an enhanced dedicated channel E-DCH radio link is configured in a base station node, where the base station node Performing the E-DCH radio link operation using the reference channel scrambling code and avoiding transmitting a downlink control channel scrambling code of the E-DCH radio link to a radio network controller.

The embodiment of the invention further provides a base station node, which is configured with a reference channel of an E-DCH radio link. The scrambling code includes: a radio link operation unit, configured to perform the E-DCH wireless link operation by using the reference channel scrambling code; and a sending unit, configured to send a response message to the radio network controller, and avoid carrying therein Downlink control channel scrambling code of the E-DCH radio link.

The embodiment of the invention further provides a method for implementing an enhanced dedicated channel radio link operation, the migrating radio network controller assigning a reference channel scrambling code of the E-DCH radio link; and migrating the radio network controller to the serving radio network control The transmitter transmits a reference channel scrambling code of the E-DCH radio link and avoids transmitting a downlink control channel scrambling code of the E-DCH radio link to the serving radio network controller.

An embodiment of the present invention further provides a radio network controller, including: an assignment unit, configured to assign a reference channel scrambling code of an E-DCH radio link; and a migration side processing unit, configured to be used in the radio network controller Transmitting the radio network controller, transmitting a reference channel scrambling code of the E-DCH radio link to the serving radio network controller, and avoiding transmitting downlink control of the E-DCH radio link to the serving radio network controller Channel scrambling code.

As can be seen from the foregoing technical solution, in the embodiment of the present invention, the Node B avoids sending the downlink control channel scrambling code of the E-DCH radio link to the RNC, or the DRNC avoids sending the downlink control of the E-DCH radio link to the SRNC. The channel is scrambled, so there is no phenomenon that the reference channel scrambling code received by the receiver is different from the corresponding downlink control channel scrambling code. When the RNC needs to use the E-DCH downlink control channel scrambling code, it can directly query the scrambling code corresponding to the corresponding radio link reference channel, thereby fundamentally eliminating the misuse of the downlink control channel interference transmitted by the Node B or the DRNC. The possibility of the code, and thus the correctness of the E-DCH downlink control channel configuration is guaranteed.

DRAWINGS

1 is a prior art UTRAN structure;

2 is a frame structure of an E-AGCH in the prior art;

3 is a frame structure of an E-RGCH and an E-HICH in the prior art;

4 is a method of using a phase reference S-CPICH in the prior art;

5 is a schematic flowchart of a first embodiment of a method for implementing an E-DCH wireless link according to the present invention; FIG. 6 is a schematic structural diagram of an embodiment of a base station node according to the present invention;

FIG. 7 is a schematic structural diagram of an embodiment of a radio network controller according to the present invention.

detailed description

The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

Referring to FIG. 5, it is a flow of a first embodiment of a method for operating an E-DCH radio link according to the present invention. Cheng Tu.

First, in step 510, when establishing a cell, the RNC pre-configures at least one reference channel and its corresponding scrambling code in the Node B. Further, the RNC assigns the reference channel information of the E-DCH radio link to the Node B according to the measurement information of the Node B, including the scrambling code of the reference channel. Through this step, the reference channel scrambling code of the E-DCH radio link is configured in the Node B.

Thereafter, in step 520, the Node B configures the radio link (ie, performs various operations of the E-DCH radio link) using the reference channel scrambling code of the E-DCH radio link, the process including the E-DCH radio link The establishment, or the addition of an E-DCH radio link, or the reconfiguration of an E-DCH radio link, or the deletion of an E-DCH radio link. Moreover, the Node B is prevented from returning the scrambling code of the E-DCH radio link downlink control channel to the RNC. In addition, if the foregoing Node B and the RNC are in the DRNS, the RNC acts as a DRNC, and the DRNC needs to send a response message to the SRNC, and carries the reference channel scrambling code of the E-DCH radio link therein, and It is necessary to avoid the scrambling code carrying the E-DCH radio link downlink control channel.

Specifically, in the NBAP and RNSAP procedures related to the establishment, addition, reconfiguration, or deletion of the E-DCH radio link, the execution of the E-AGCH, E-RGCH, and E-HICH scrambling codes by the Node B and the DRNS is avoided. Operation. The related NBAP and RNSAP procedures include the following operations: radio link setup, radio link addition, synchronous radio link reconfiguration, and non-synchronous radio link reconfiguration.

Avoiding the scrambling codes of E-AGCH, E-RGCH, and E-HICH in messages related to the establishment, addition, reconfiguration, or deletion of E-DCH radio links. Related messages include: "RADIO LINK SETUP RESPONSE" message, "RADIO LINK SETUP FAILURE" message, "RADIO LINK ADDITION RESPONSE" message, "RADIO LINK ADDITION FAILURE" message, "RADIO LINK RECONFIGURATION READY" message, and "RADIO LINK RECONFIGURATION" RESPONSE" message.

In the IE "E-DCH FDD DL Control Channel Information" of the above message, unlike the prior art scheme, the IE "E-AGCH And E-RGCH/E-HICH FDD Scrambling Code" is not carried. Table 4 shows the IE "E-DCH FDD DL Control Channel Information" returned by the Node B/DRNS in this embodiment, in which the IE "E-AGCH And E-RGCH/E-HICH FDD Scrambling Code, In this way, the embodiment avoids the scrambling code of the E-DCH downlink control channel sent by the Node B to the RNC or the DRNC to the SRNC.

Table 4: IE "E-DCH FDD DL Control Channel Information"

ICH - 1)

Integer

(0.. maxnoof

SigSeqE-RGH

ICH - 1)

(0..37) indicates E-DCH serving grant index as

INTEGER

Defined in [32]; index 38

Serving Grant Value 0 (0..37, 38)

Means zero grant (optional) integer (optional) integer

(0..37) Indicates (0..37, 38) as defined in [32]

E-DCH service authorization index, index 38 indicates zero authorization

Indicates whether the Serving Grant Value is

ENUMERATED granted with a primary

Pr imary/ Secondary Grant (Primary, E-RNTI or a secondary)

0

Selector Secondary) E-RNTI

(optional)

(Basic/Second Authorization Selection) Enumeration (basic, (indicating that the basic E-RNTI is still second) is the second E-RNT I grant service authorization value)

E-RGCH Release Indicator 0

9.2.2.131c

(E-RGCH release indication) (optional)

After step 520, the process proceeds to step 530, where the RNC finds the scrambling code of the corresponding E-DCH radio link downlink control channel locally according to the reference channel of the radio link, and configures the corresponding radio link for the UE by using the RRC message, including The UE provides a downlink control channel scrambling code for the radio link. In this step, when the RNC configures the radio link for the UE, the reference channel scrambling code of the E-DCH radio link may be directly sent to the UE as the downlink control channel scrambling code through RRC; the reference channel identifier of the radio link may also be used. Notifying the UE, and the UE searches for the scrambling code of the corresponding reference channel according to the received reference channel identifier, thereby obtaining a scrambling code of the E-DCH downlink control channel. In this case, the reference channel identifier is used as the UE to find E. - The basis of the DCH radio link downlink control channel scrambling code.

It should be noted that the Node B avoids sending the downlink control channel scrambling code of the E-DCH radio link to the RNC and the downlink control channel scrambling code of the DRNC to avoid sending the E-DCH radio link to the SRNC, which is not limited. Used in combination. Because if the UE does not move beyond the cell coverage of the SRNS, then there is no relevant step for the DRNC to send a response message to the SRNS. Secondly, even if there is a related step of the DRNC transmitting the response information to the SRNS, as long as one of the two processes adopts the technical solution shown in the embodiment of the present invention, the existing E-DCH downlink control channel configuration can be improved to some extent. The correctness.

For example, in the DRNS, after the DRNC assigns the reference channel scrambling code of the E-DCH radio link to the Node B, the NodeB can send the downlink control channel scrambling code of the E-DCH radio link to the DRNC according to the prior art scheme. When the DRNC sends a response message to the SRNC, only the reference channel scrambling code of the E-DCH radio link is transmitted, and the downlink control channel scrambling code of the E-DCH radio link is avoided.

For another example, in the DRNS, after the DRNC assigns the reference channel scrambling code of the E-DCH radio link to the NodeB, the NodeB avoids transmitting the downlink control channel scrambling code of the E-DCH radio link to the DRNC; When the SRNC sends the response message, the reference channel scrambling code of the E-DCH radio link and the downlink control channel scrambling code of the E-DCH radio link may be sent according to the prior art scheme.

A person skilled in the art may understand that all or part of the steps in implementing the above method embodiments may be completed by a program instructing related hardware, and the program may be stored in a computer readable storage medium, the storage medium Such as: R0M / RAM, disk, CD, etc.

Please refer to FIG. 6, which is a schematic structural diagram of a Node B embodiment according to the present invention. The Node B device in this embodiment is configured with a reference channel scrambling code (usually configured by the RNC) of the E-DCH radio link, and the Node B includes a radio link operation unit 61 and a sending unit 62, which are combined below. The working principle of Node B is further explained by its internal structure and connection relationship.

After the Node B is configured with the reference channel scrambling code of the E-DCH radio link by the RNC, the E-DCH radio link operation is performed by the radio link operation unit 61 using the reference channel scrambling code. The E-DCH radio link operation includes establishment of an E-DCH radio link, addition of an E-DCH radio link, reconfiguration of an E-DCH radio link, or deletion of an E-DCH radio link. The reference channel is P-CPI CH or S-CPICH.

In addition, when the Node B needs to return a response message to the RNC, the response message is sent by the sending unit 62, and the downlink control channel scrambling code of the E-DCH radio link is avoided therein. The E-DCH radio link downlink control channel includes: one or more of an E-DCH absolute grant channel, an E-DCH relative grant channel, and an E-DCH hybrid automatic repeat request indication channel. Please refer to FIG. 7, which is a schematic structural diagram of an RNC embodiment in the present invention. The RNC in this embodiment includes the assignment unit 71 and the migration side processing unit 72. The internal structure and the connection relationship are further combined with the working principle of the RNC.

The reference channel related information of the E-DCH radio link, including the reference channel scrambling code, is assigned by the assigning unit 71. Specifically, the measurement result of the assignment unit 71 » Node B is a reference channel to which the E-DCH radio link is assigned and related information.

When the UE moves and the RNC is used as the DRNC, the DRNC sends the reference channel scrambling code of the E-DCH radio link to the corresponding SRNC through the migration side processing unit 72, and avoids sending the E-DCH radio to the SRNC. Downlink control channel scrambling code for the link. In this way, the SRNC does not receive the reference channel scrambling code of the E-DCH radio link transmitted by the DRNC, and receives the downlink control channel scrambling code of the E-DCH radio link, thereby ensuring that the SRNC provides the UE with the E- The accuracy of the DCH radio link downlink control channel scrambling code.

Further, those skilled in the art can understand that one RNC is a DRNC for one UE and an SRNC for another UE. Therefore, in order to make a RNC applicable to diverse needs, the service side can also be set in the RNC. Processing unit. When the service side processing unit receives the response message from the DRNC including the E-DCH radio link reference channel scrambling code, directly providing the E-DCH radio link to the UE according to the E-DCH radio link reference channel scrambling code Downlink control channel scrambling code. The downlink control channel scrambling code of the E-DCH radio link provided by the service side processing unit for the UE may be implemented in various specific manners. For example, the service side processing unit includes a first scrambling code notification unit, configured to directly send the reference channel scrambling code of the E-DCH radio link to the user equipment as a downlink control channel scrambling code; or the service The side processing unit includes a second scrambling code notification unit, configured to send a reference channel identifier of the E-DCH radio link to the user equipment, where the reference channel identifier is used to search for the E- The basis of the DCH radio link downlink control channel scrambling code.

In summary, embodiments of the present invention solve the potential risk of RNC control errors by avoiding the downlink control channel scrambling code of the E-DCH radio link transmitted from the Node B to the RNC or from the DRNC to the SRNC. Moreover, since the amount of information transmitted between the Node B and the RNC or between the DRNC and the SRNC is greatly reduced, the efficiency of the NBAP and RNSAP messages is also improved.

Although the invention has been illustrated and described with reference to the preferred embodiments of the present invention, it will be understood The spirit and scope of the invention.

Claims

Rights request

A method for implementing an enhanced dedicated channel radio link operation, wherein a reference channel scrambling code of an enhanced dedicated channel E-DCH radio link is configured in a base station node, wherein:

The base station node performs the E-DCH radio link operation using the reference channel scrambling code, and avoids transmitting the downlink control channel scrambling code of the E-DCH radio link to the radio network controller.

2. The method according to claim 1, further comprising:

The radio network controller provides a downlink control channel scrambling code of the E-DCH radio link to the user equipment according to the reference channel scrambling code of the E-DCH radio link.

The method according to claim 2, wherein the step of the radio network controller providing the downlink control channel scrambling of the E-DCH radio link for the user equipment comprises:

The radio network controller sends the reference channel scrambling code of the E-DCH radio link to the user equipment as a downlink control channel scrambling code;

Or

Transmitting, by the radio network controller, a reference channel identifier of the E-DCH radio link to the user equipment, where the reference channel identifier is used as the user equipment to search for the E-DCH radio link downlink control channel The basis of the scrambling code.

The method according to claim 1, wherein the step of avoiding transmitting a downlink control channel scrambling code of the E-DCH radio link to the radio network controller comprises:

In transmitting a response message including the E-DCH radio link downlink control channel information to the radio network controller, the downlink control scrambling code of the E-DCH radio link is avoided.

The method according to claim 1, wherein the radio network controller is a migration radio network controller, and the method further includes:

Transmitting, by the migrating radio network controller, a reference channel scrambling code of the E-DCH radio link to a serving radio network controller, and avoiding transmitting downlink control of the E-DCH radio link to the serving radio network controller Channel scrambling code.

The method according to any one of claims 1 to 5, wherein the E-DCH radio link operation comprises:

Establishment of an E-DCH radio link, addition of an E-DCH radio link, reconfiguration of an E-DCH radio link, or deletion of an E-DCH radio link.

The method according to any one of claims 1 to 5, wherein the reference channel comprises a phase reference basic common pilot channel P-CPICH or a second common pilot channel S-CPICH.

A base station node, configured with a reference channel scrambling code of an E-DCH radio link, comprising:

a radio link operation unit, configured to perform the E-DCH radio link operation by using the reference channel scrambling code;

And a sending unit, configured to send a response message to the radio network controller, and avoid carrying a downlink control channel scrambling code of the E-DCH radio link therein.

9. The base station node according to claim 8, wherein the E-DCH radio link downlink control channel comprises: an E-DCH absolute grant channel, an E-DCH relative grant channel, and an E-DCH hybrid automatic retransmission. The request indicates any one or more of the channels.

10. A method of implementing enhanced dedicated channel radio link operation, characterized by: migrating a radio network controller to assign a reference channel scrambling code for an E-DCH radio link;

The migrating radio network controller transmits a reference channel scrambling code for the E-DCH radio link to the serving radio network controller and avoids transmitting the downlink control channel scrambling code of the E-DCH radio link to the serving radio network controller.

The method according to claim 10, further comprising:

The serving radio network controller provides a downlink control channel scrambling code for the E-DCH radio link to the user equipment based on the reference channel scrambling code of the E-DCH radio link.

The method according to claim 10, wherein the step of the downlink control channel scrambling for the serving radio network controller to provide the E-DCH radio link with the device comprises:

The serving radio network controller sends the reference channel scrambling code of the E-DCH radio link to the user equipment as a downlink control channel scrambling code;

Or

Transmitting, by the serving radio network controller, a reference channel identifier of the E-DCH radio link to the user equipment, where the reference channel identifier is used as the user equipment to search for the E-DCH radio link downlink control channel interference The basis of the code.

The method according to any one of claims 10 to 12, wherein: the E-DCH radio link downlink control channel comprises: an E-DCH absolute grant channel, and an E-DCH relative grant letter. The track and E-DCH hybrid automatic repeat request indicates any one or more of the channels.

A radio network controller, comprising:

An assignment unit, configured to assign a reference channel scrambling code of the E-DCH radio link;

a migration side processing unit, configured to send a reference channel scrambling code of the E-DCH radio link to a serving radio network controller when the radio network controller is used as a migrating radio network controller, and avoiding to the serving radio network The controller sends a downlink control channel scrambling code of the E-DCH radio link.

The radio network controller according to claim 14, further comprising: a service side processing unit, configured to provide the user equipment according to an E-DCH radio link reference channel scrambling code from the migrating radio network controller Downlink control channel scrambling code for E-DCH radio link.

The radio network controller according to claim 15, wherein the service side processing unit comprises:

a first scrambling code notification unit, configured to send a reference channel scrambling code of the E-DCH radio link to the user equipment as a downlink control channel scrambling code;

Or

a second scrambling code notification unit, configured to send a reference channel identifier of the E-DCH radio link to the user equipment, where the reference channel identifier is used to search for the E-DCH radio link as the user equipment The basis of the downlink control channel scrambling code.

The radio network controller according to any one of claims 14 to 16, wherein the E-DCH radio link downlink control channel comprises: an E-DCH absolute grant channel, and an E-DCH relative grant channel. And the E-DCH hybrid automatic repeat request indicates any one or more of the channels.