Method and radio network controller for transmitting information

This application is a continuation of U.S. patent application Ser. No. 13/305,138, filed on Nov. 28, 2011. U.S. patent application Ser. No. 13/305,138 is a continuation of U.S. patent application Ser. No. 12/769,809, filed on Apr. 29, 2010, now U.S. Pat. No. 8,780,822. U.S. patent application Ser. No. 12/769,809 is a continuation of International Application No PCT/CN2008/072841, filed on Oct. 27, 2008. The International Application claims benefit of priority to Chinese Patent Application No. 200710124236.6, filed on Oct. 31, 2007.All of the aforementioned patent applications are hereby incorporated by reference in their entireties.

The present invention relates to mobile communication technologies, and in particular, to a method and radio network controller for transmitting information.

A mobile communication system includes a User Equipment (UE), a base station, and a radio network control device. For ease of description, it is assumed that the base station is a NodeB of Universal Mobile Telecommunications System, and that the radio network control device is a Radio Network Controller (RNC) hereunder. The channel between the UE and the NodeB and the channel between the NodeB and the RNC are Random Access Channels (RACHs).

To enhance the data transmission rate between the UE and the NodeB, a solution is put forward in the industry: using High Speed Downlink Packet Access (HSDPA) in the downlink common channel, thus making the theoretical downlink transmission rate as high as 100 Kbps. However, the downlink transmission rate is affected by the uplink transmission rate. For example, uplink transmission is currently performed on a shared RACH, which leads to slow uplink response and affects the downlink transmission rate.

To solve the problem, another solution is put forward in the industry: using High Speed Uplink Packet Access (HSUPA) to implement random access. This solution requires the UE to use an Enhanced Dedicated Channel (E-DCH) transmission channel to transmit the specific messages in the uplink transmission at random access. That is, an E-DCH should be used between the UE and the NodeB. This solution increases the speed of exchanging information between the UE and the NodeB massively.

During implementing of the present invention, the inventor finds at least the following problems in the prior art.

To increase the speed of transmitting the data sent by the UE in the uplink direction between the RNC and the NodeB, an E-DCH transmission channel may also be used between the RNC and the NodeB. Because the UE data quantity is small and intermittent, if a dedicated E-DCH channel is used between the RNC and the NodeB, resources are wasted drastically.

The channel between the RNC and the NodeB is port-based. This channel is different from the air interface based channel between the UE and the NodeB, and the method for allocating an E-DCH transmission channel between the UE and the NodeB at random access is not applicable to allocation of the channel between the RNC and the NodeB.

The embodiments of the present invention provide a method for transmitting information to save the channel resources between the RNC and the NodeB while speeding up the information transmission between the RNC and the NodeB. In addition, the embodiments of the present invention provide a non transitory computer readable medium and a radio network controller for transmitting information.

The embodiments of the present invention provide a method for transmitting information. The method includes: sending, by a radio network controller (RNC), a message for setting up a shared enhanced dedicated channel (E-DCH) to a NodeB, where the message comprises following parameters: a signature list, a relevant E-DCH physical layer parameter, a transmission channel parameter, and a transmission bearer parameter, the signature list has a mode as Preamble Signatures for a physical random access channel (PRACH); and receiving, by the RNC, a response from the NodeB, where the response comprises information about the shared E-DCH that set up by the NodeB according to the message.

The embodiments of the present invention provide a Radio Network Controller (RNC). The RNC includes: a transmitter, configured to send a message for setting up a shared enhanced dedicated channel (E-DCH) to a NodeB, where the message comprises following parameters: a signature list, a relevant E-DCH physical layer parameter, a transmission channel parameter, and a transmission bearer parameter, where the signature list has a mode as Preamble Signatures for a physical random access channel (PRACH); and a receiver, configured to receive a response from the NodeB, where the response comprises information about the shared E-DCH that set up by the NodeB according to the message.

The embodiments of the present invention provides a non transitory computer readable medium storing executable codes, when executed by a processor of a base station, cause the base station to perform following steps: receiving a message for setting up a shared enhanced dedicated channel (E-DCH) from a radio network controller (RNC), wherein the message comprises following parameters: a signature list, a relevant E-DCH physical layer parameter, a transmission channel parameter, and a transmission bearer parameter, wherein the signature list has a mode as Preamble Signatures for a physical random access channel (PRACH); and setting up the shared E-DCH according to the message.

Compared with the prior art, the embodiments of the present invention use the NodeB to receive the message for setting up/reconfiguring a shared E-DCH transmission channel from the RNC, and set up the shared E-DCH transmission channel based on the message. Afterward, through the shared E-DCH transmission channel, the NodeB exchanges information with the RNC. Therefore, the NodeB and the RNC can share the E-DCH transmission bearer, thus saving the channel resources between the NodeB and the RNC while speeding up the information transmission between the RNC and the NodeB.

FIG. 1 is a sequence diagram of configuring a shared E-DCH transmission channel between an RNC and a NodeB according to an embodiment of the present invention;

FIG. 2 shows a structure of a system according to an embodiment of the present invention; and

FIG. 3 shows a structure of a NodeB according to an embodiment of the present invention.

To make the technical solution, objectives and merits of the present invention clearer, the following describes the embodiments of the present invention in detail with reference to some accompanying drawings.

As shown in FIG. 1 , the process of configuring a shared E-DCH transmission channel between an RNC and a NodeB according to an embodiment of the present invention includes the following content.

Step 101 : The RNC sends a message for setting up/reconfiguring a shared E-DCH transmission channel to the NodeB, requesting the NodeB to set up an E-DCH transmission channel.

It is assumed herein that the setup/reconfiguration message sent by the RNC to the NodeB is a setup/reconfiguration request.

The RNC needs to send a request to the NodeB, notifying the parameters required for channel setup/reconfiguration. For example, the parameters may include: the signature list and/or the relevant physical layer channel parameters used when the UE performs random access through the E-DCH, and/or the relevant physical layer channel parameters; and the parameters may further include one or more of these parameters: the physical layer parameters required when the UE performs random access through the E-DCH, transmission channel parameters required when the UE performs random access through the E-DCH, or transmission bearer parameters required when the UE performs random access through the E-DCH, or may further include one or all of the above two types of parameters. The parameters may be sent through a new message; or the parameters are added into a message of the existing process, which means the parameters are sent through the existing process.

If the RNC sends the signature list used when the UE performs random access through the E-DCH to the NodeB, the RNC may send the signature list in many modes. This embodiment provides several modes: (1) A table is stipulated in the protocol, and a serial number of the table is assigned and sent; or (2) a signature sequence is configured and sent; or (3) the signature list is sent in the mode like Preamble Signatures in the traditional Physical Random Access Channel (PRACH). These sending modes may be performed in the process of setting up the common transmission channel.

If the RNC sends the physical layer channel parameters required when the UE performs random access through the E-DCH to the NodeB, the RNC may send the parameters in many modes. This embodiment provides the specific processing modes for the RNC to notify the NodeB to assign the relevant resources through configuration of the channel such as the Arrest Indication Channel (AICH), High Speed-DSCH-related Shared Control Channel (HS-SCCH), and High Speed Physical Downlink Shared Channel (HS-PDSCH). The detailed modes are as follows.

(1) An Arrest Indication (AI) is added into an AICH sent to the NodeB, indicating that the AICH may be used at the time of performing random access through the E-DCH. In this case, the AICH may be modified in the common transmission setup process.

(2) The second mode is specific to the HS-SCCH. In this mode, the HS-SCCH sent to the NodeB may carry at least one of these items: physical-layer parameters, HS-SCCH format number, and HS-SCCH time sequence relation. In this case, the HS-SCCH may be modified in the process of reconfiguring the physical shared channel. The physical-layer parameters may be channelized codes and power. The power may be the maximum transmit power and/or initial transmit power; for the HS-SCCH format number, the current HS-SCCH comes in three formats, and the specific format needs to be indicated; the HS-SCCH time sequence relation may be a contrast between the HS-SCCH and an absolute time sequence, for example, an offset from the AICH or Primary Common Control Physical Channel (P-CCPCH), measured in timeslots or 256 chips.

(3) The third mode is specific to the HS-PDSCH. In this mode, the HS-PDSCH sent to the NodeB may be added at least one of these items: physical-layer parameters, HS-PDSCH time sequence relation, and transmission channel parameters. In this mode, the HS-PDSCH may be modified in the process of setting up the common transmission channel. Besides, the physical-layer parameters may include at least one of these items: channelized code, modulation mode, power, and TB size; the HS-PDSCH time sequence relation may be a contrast between an HS-PDSCH and an absolute time sequence, for example, an offset from an AICH or P-CCPCH, measured in timeslots or 256 chips; the transmission channel parameters include an indication of the MAC format, specifically including MAC-hs, MAC-ehs in DPA enhancement, or a newly defined format.

If the RNC sends the relevant E-DCH physical-layer parameters required when the UE performs random access through the E-DCH, transmission channel parameters required when the UE performs random access through the E-DCH, and the transmission bearer parameters required when the UE performs random access through the E-DCH, etc., to the NodeB, the RNC may send the parameters in many modes as the same.

The E-DCH physical-layer parameters may include the parameters in the following Table 1, and such parameters may be added in the process of setting up the common transmission channel.

The transmission channel parameters may include the parameters in the following Table 2. Specifically, an indication may be added into the shared physical channel reconfiguration to indicate that the parameters can be used at the time of performing random access through the E-DCH. Alternatively, the parameters are directly added into the process of setting up the common transmission channel.

The transmission bearer may include the optional parameters in the following Table 3. These optional parameters may be added in the process of setting up the common transmission channel.

Step 102 : The NodeB sets up the shared E-DCH transmission channel according to parameters in the received message, and exchanges information with the RNC through an established shared E-DCH transmission bearer.

The NodeB may return a channel setup/reconfiguration response to the RNC, notifying the information about the established E-DCH transmission channel.

The NodeB sets up the corresponding shared E-DCH transmission channel according to the parameters sent by the RNC, and returns the information about the established channel to the RNC. Specifically, the transmission-layer address and/or Binding ID is notified to the RNC. Alternatively, other relevant parameters of the E-DCH transmission channel may be notified to the RNC.

Moreover, after the shared E-DCH transmission channel is set up, if the NodeB needs to send UE information to the RNC, the UE ID needs to be notified to the RNC. Specifically, after receiving the information sent by the UE, the NodeB also needs to add the UE ID into the received information, with a view to modifying the data to new E-DCH data, or with a view to modifying the E-DCH FP frame corresponding to the data to the FP frame that carries the UE ID.

The modified FP frame is shown in the following Table 4.

In the foregoing solution which uses a shared E-DCH transmission channel to transmit data to the RNC, it is necessary to modify the processing logic of the RNC so that the RNC can resolve the UE ID. Specifically, the MAC-es entity may be modified accordingly. Nevertheless, the modification is based on the precondition that the entity corresponding to the resolved UE ID in the RNC is a MAC-es entity. If the entity corresponding to the UE ID is another entity, the entity needs to be modified accordingly.

The foregoing embodiment reveals that: Random access can also be performed between the RNC and the NodeB through an E-DCH, thus saving the channel resources between the RNC and the NodeB.

As shown in FIG. 2 , the system provided in an embodiment of the present invention includes an RNC 210 and a NodeB 220 .

The RNC 210 needs to send a message for setting up/reconfiguring a shared E-DCH transmission channel to the NodeB 220 .

The NodeB 220 needs to set up the shared E-DCH transmission channel according to parameters in the message, and exchange information with the RNC through an established shared E-DCH transmission bearer.

The NodeB 220 is further configured to return the information about the established shared E-DCH transmission channel to the RNC 210 .

Afterward, information may be transmitted between the NodeB 220 and the RNC 210 through the established shared E-DCH transmission bearer.

When the RNC 210 sends the setup/reconfiguration request, the setup/reconfiguration request sent by the RNC 210 may carry a signature list used when the UE performs random access through the E-DCH, relevant physical-layer channel parameters required when the UE performs random access through the E-DCH, relevant physical-layer parameters required when the UE performs random access through the E-DCH, transmission channel parameters, or transmission bearer parameters, or any combination thereof.

The RNC 210 sends a setup/reconfiguration request and returns the information about the established shared E-DCH transmission channel to the NodeB 220 , which is detailed above and not described further.

After the shared E-DCH transmission bearer channel is set up, if the NodeB 220 needs to send UE information to the RNC 210 , the UE ID needs to be notified to the RNC 210 . Specifically, after receiving the information sent by the UE, the NodeB 220 also needs to add the UE ID into the received information, with a view to modifying the data to new E-DCH data, or with a view to modifying the E-DCH FP frame corresponding to the data to the FP frame that carries the UE ID.

Accordingly, the RNC 210 needs to resolve the received information to obtain the UE ID. For example, for the new E-DCH data and E-DCH FP frame, the MAC-es entity in the RNC 210 needs to be modified. The implementation is detailed above, and is not described further.

The foregoing method and system embodiments reveal that: In the apparatus embodiment herein, the NodeB 220 needs to set up a shared E-DCH transmission channel according to the parameters in the message sent by the RNC 220 , and may be further configured to return a channel setup/reconfiguration response to the RNC 210 to indicate the information about the established shared E-DCH transmission channel.

Accordingly, the RNC 210 needs to send a request for setting up/reconfiguring a shared E-DCH transmission channel to the NodeB 220 .

After the shared E-DCH transmission channel is set up between the NodeB 220 and the RNC 210 , the NodeB 220 may be further configured to: add an UE ID into the information transmitted by the UE through the shared E-DCH transmission channel and convert the data in the information into the E-DCH data that carries the UE ID, or convert the information into an FP frame that carries the UE ID, and send the modified information to the RNC 210 through the shared E-DCH transmission bearer.

Specifically, the NodeB 220 for transmitting information may include a transceiver module 221 that is configured to receive a message for setting up/reconfiguring a shared E-DCH transmission channel from the RNC 210 ; and a channel setup module 222 that is configured to set up the shared E-DCH transmission channel according to parameters in the message, and to control the transceiver module 221 to exchange information with the RNC 210 through an established shared E-DCH transmission bearer.

The NodeB may further include an identification module 223 that is configured to add a UE ID into the information received from the UE, to modify the data in the information to new E-DCH data or to modify the E-DCH FP frame corresponding to the data to the FP frame that carries the UE ID, and to control the transceiver module 221 to send the modified information to the RNC 210 through the shared E-DCH transmission channel.

The foregoing embodiment reveals that random access may also be performed between the RNC and the NodeB through an E-DCH, thus saving the channel resources between the RNC and the NodeB.

The NodeB and RNC in the embodiments of the present invention may be replaced with other devices of equivalent functions. These alternatives also fall within the scope of protection of the present invention

Based on the descriptions of the preceding embodiments, those skilled in the art may understand that the present invention may be implemented by hardware only or by software and a necessary universal hardware platform. The technical solution of the present invention may be embodied by a software product which may be stored in a nonvolatile storage medium. The storage medium can be a Compact Disk Read-Only Memory (CD-ROM), a USB disk, or a mobile hard disk. The software product includes a number of instructions that enable a computer device (personal computer, server, or network device) to execute the methods provided in the embodiments of the present invention.

The above descriptions are merely some exemplary embodiments of the present invention, but not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the present invention should fall within the scope of the present invention.