CN102098743B - E-DCH (Enhanced Dedicated Channel) scheduling optimization method and wireless access network node - Google Patents
E-DCH (Enhanced Dedicated Channel) scheduling optimization method and wireless access network node Download PDFInfo
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Abstract
The invention relates to an E-DCH (Enhanced Dedicated Channel) scheduling optimization method and a wireless access network node. The E-DCH scheduling optimization method comprises the following steps of: sending an E-DCH scheduling parameter of a terminal to a target wireless access network system by a source wireless access network system through signaling when relocation is performed; after the relocation is completed, judging whether the received E-DCH scheduling parameter is consistent with the determined E-DCH scheduling parameter of the terminal or not by the target wireless access network system; and if not, initiating a reconfiguration flow for the terminal to update the scheduling parameter thereof. The E-DCH scheduling optimization method and the wireless access network node of the invention can improve the E-DCH scheduling efficiency and reduce the possibility of physical resource reconfiguration.
Description
Technical Field
The invention relates to the field of communication, in particular to an E-DCH scheduling optimization method and a wireless access network node.
Background
In order to reduce the transmission delay of packet domain data, the 3GPP protocol standard evolved the protocol architecture of the third generation mobile communication, i.e. the Radio Network Controller (RNC) NODE moves down to the NODE B (NODE-B), which has functions of serving radio network controller and drift radio network controller, and this NODE B may be referred to as enhanced NODE B for short.
The downward shift of the radio network controller causes the interface definition between different nodes to change, an Iur interface is adopted between the enhanced node B and the enhanced node B, an Iur interface is also adopted between the enhanced node B and the traditional radio network controller, an Iu interface is adopted between the enhanced node B and the core network node, and only the Iu interface of the packet domain is supported.
In the current protocol, for the relocation process, the information of the "transparent container from the source radio network controller to the target radio network controller" of the source radio network access system needs to be sent through the "relocation requirement" signaling, and then forwarded to the target radio network access system through the "relocation request" of the core network, wherein the "transparent container from the source radio network controller to the target radio network controller" does not contain the information of the physical channel, that is, the target radio network controller needs to perform the reallocation on the parameters of the physical layer according to the resource allocation of the target radio network controller after receiving the relocation request.
As with the network architecture shown in fig. 1, the following scenarios require relocation to occur:
(1) the RRC connection request is established between the user equipment and the enhanced node B or the service of the packet domain exists, but the subsequent user equipment also establishes the service of the circuit domain, and the enhanced node B needs to initiate the relocation process;
(2) because the user equipment has the concurrence of the circuit domain service and the packet domain service, the control right of the user equipment is in the traditional radio network controller RNC, but along with the release of the circuit domain service, the RNC needs to initiate the relocation process to the enhanced node B;
(3) when the enhanced node B is used as a serving node B of a ue, the serving node B generally has the best signal strength, and has the function of serving RNC and performs a merging function for uplink packet data, but due to the mobility of the ue, the serving node B needs to perform frequent update, and then the serving RNC needs to perform frequent transfer, and thus frequent relocation also needs to occur.
Then, based on the new architecture that a Radio Network Controller (RNC) is moved down to a node B (node B), a deployed network may have an enhanced node B that is a node B with a carrier frequency shared by a circuit domain and a packet domain, that is, a cell in which a service of the circuit domain and a service of the packet domain are managed by the node B may use the same radio resource pool, but as long as a user equipment has a service of the circuit domain, a controller connected to the RRC is in a conventional RNC, so that there is a case that the control right of the RRC is in different nodes but physical resources use one set.
When the user equipment communicates in the same cell and is relocated under the condition of (1) or (2) above, it may result in inefficient physical resource reconfiguration and E-DCH scheduling.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an E-DCH scheduling optimization method and a wireless access network node, so as to improve the E-DCH scheduling efficiency and reduce the possibility of physical resource reallocation.
In order to solve the above technical problems, the present invention provides an E-DCH scheduling optimization method, which comprises:
when relocation is carried out, the source wireless access network system sends an enhanced dedicated channel (E-DCH) scheduling parameter of the user equipment to the target wireless access network system through a signaling;
after the relocation is completed, the target wireless access network system judges whether the received E-DCH scheduling parameter is consistent with the E-DCH scheduling parameter of the user equipment determined by the target wireless access network system, and initiates a relocation process to the user equipment to update the scheduling parameter of the user equipment only when the received E-DCH scheduling parameter is inconsistent with the E-DCH scheduling parameter of the user equipment.
Further, the source wireless access network system directly sends a signaling carrying the E-DCH scheduling parameter to the target wireless access network system, or sends a signaling carrying the E-DCH scheduling parameter to the target wireless access network system through a core network.
Further, the signaling is any one or a combination of the following messages: a relocation request message, a relocation required message or a handover request message.
Further, the signaling carries the E-DCH scheduling parameter in a manner that the E-DCH scheduling parameter is added to a "radio resource control container".
Further, the signaling carries the E-DCH scheduling parameters in a manner that a "radio resource control container" to which the E-DCH scheduling parameters are added is included in the "transparent container from the source radio network controller to the target radio network controller".
Further, the method for carrying the E-DCH scheduling parameter in the signaling is to fill the information element related to the E-DCH scheduling parameter in the signaling.
Further, the source wireless access network system and the target wireless access network system are: a radio access network system formed by a radio access network controller and a node B, or a radio access network system formed by an enhanced node B.
Further, the E-DCH scheduling parameter refers to a control parameter for scheduling the E-DCH of the ue, and includes any one or a combination of the following parameters: the method comprises the steps of a happy bit delay condition, a period for sending request scheduling information by user equipment when zero authorization is carried out, and a period for sending request scheduling information by the user equipment when non-zero authorization is carried out.
In order to solve the above technical problem, the present invention further provides a radio access network node, where the radio access network node includes a relocation module and a scheduling optimization module connected to each other, where:
the relocation module is configured to execute a relocation process, and specifically includes: when the wireless access network node is used as a node of a source wireless access network system to perform relocation, the E-DCH scheduling parameter of the user equipment is sent to a target wireless access network system through signaling so as to be used by the target wireless access network system; when the wireless access network node is used as a node of a target wireless access network system for relocation, the wireless access network node is also used for receiving an E-DCH scheduling parameter;
the scheduling optimization module is used for determining the E-DCH scheduling parameters of the user equipment according to the local strategy, judging whether the received E-DCH scheduling parameters are consistent with the determined E-DCH scheduling parameters, and initiating a reconfiguration process to the user equipment to update the scheduling parameters only when the received E-DCH scheduling parameters are inconsistent with the determined E-DCH scheduling parameters.
Further, the radio access network node directly sends a signaling carrying the E-DCH scheduling parameter to the target radio access network system, or sends a signaling carrying the E-DCH scheduling parameter to the target radio access network system through a core network.
Further, the signaling is any one or a combination of the following messages: a relocation request message, a relocation required message or a handover request message.
Further, the signaling carries the E-DCH scheduling parameter in a manner that the E-DCH scheduling parameter is added to a "radio resource control container".
Further, the method for carrying the E-DCH scheduling parameter in the signaling is to fill the information element related to the E-DCH scheduling parameter in the signaling.
Further, the radio access network node is a radio access network controller or an enhanced node B.
In the invention, the source wireless access network system informs the scheduling related parameters to the target wireless access network system for the target wireless access network system to carry out E-DCH scheduling, and the target wireless access network system initiates a reconfiguration process to the user equipment to update the scheduling parameters thereof only when the received E-DCH scheduling parameters are inconsistent with the determined E-DCH scheduling parameters of the user equipment, thereby ensuring the scheduling efficiency and accuracy of the user equipment and the target wireless access network and reducing the possibility of carrying out physical resource reconfiguration.
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Fig. 1 is a schematic diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic diagram of embodiment 2 of the present invention.
Detailed Description
The method and the wireless access network node of the invention have the main ideas that: in the relocation process, the radio access network node of the source radio access network system transmits the E-DCH (enhanced dedicated Channel) scheduling parameters of the user equipment to the target radio access network system, so that the target radio access network system can use the E-DCH scheduling parameters to perform the E-DCH scheduling. After the relocation is completed, the target wireless access network system judges whether the received E-DCH scheduling parameter is consistent with the E-DCH scheduling parameter of the user equipment determined by the target wireless access network, if not, the target wireless access network system initiates a reconfiguration process to the user equipment in time to update the scheduling parameter of the user equipment, so that the scheduling of the user equipment is more accurate; if the data are consistent, no operation is performed, and the scheduling continuity is guaranteed.
The source wireless access network system sends the E-DCH scheduling parameter to the target wireless access network system by any one or the combination of the following:
1. the source wireless access network system directly sends the E-DCH scheduling parameter carried by the signaling to the target wireless access network system, which is detailed in the following embodiment 1; or,
2. the E-DCH scheduling parameters carried by the source radio access network system through signaling are transparently forwarded to the target radio access network system via the core network through signaling carrying, as detailed in embodiment 2 below.
The signaling carrying the above E-DCH scheduling parameters is any one of the following messages or a combination thereof: a relocation request message, a relocation required message or a handover request message.
The carrying method of the E-DCH scheduling parameter carried by the signaling for transmitting the E-DCH scheduling parameter is realized by filling the cell related to the E-DCH scheduling parameter in the signaling message.
The technical scheme of the invention is further explained in detail by combining the drawings and the specific embodiments:
example 1
Embodiment 1 is a flowchart of a method for directly performing message interaction between a source wireless access network system and a target wireless access system after network flattening to carry the E-DCH scheduling parameters, as shown in fig. 1:
step 101: a source wireless access network system decides to initiate a relocation process;
step 102: the source wireless access network system initiates a relocation request message to the target wireless access network system, wherein the relocation request message carries 'transparent container from the source wireless network controller to the target wireless network controller', and the 'transparent container from the source wireless network controller to the target wireless network controller' comprises 'wireless resource control container' added with the E-DCH scheduling parameter.
The E-DCH scheduling parameters carried in the message are E-DCH scheduling parameters being used by the user equipment.
Step 103: the target wireless access network system returns a repositioning response to the source wireless access network system;
step 104: and the target wireless access network system judges whether to initiate a reconfiguration process.
After the relocation is completed, the target wireless access network system judges whether the received E-DCH scheduling parameter is consistent with the E-DCH scheduling parameter determined by the target wireless access network according to the local strategy, if not, the target wireless access network system initiates a reconfiguration process to the user equipment in time to update the scheduling parameter, so that the scheduling is more accurate; if the data are consistent, no operation is performed, and the scheduling continuity is guaranteed.
Example 2
Embodiment 2 is a flowchart of a method for carrying E-DCH scheduling parameters when a source radio access network system performs information interaction with a target radio access network system through a core network, including a relocation process related to a user equipment and a relocation process unrelated to the user equipment, as shown in fig. 2:
step 201: a source wireless access network system decides to initiate a relocation process;
step 202: a source wireless access network system initiates a relocation required message to a core network, wherein the relocation required message carries a transparent container from a source wireless network controller to a target wireless network controller, and the transparent container from the source wireless network controller to the target wireless network controller comprises a wireless resource control container added with the E-DCH scheduling parameter;
the E-DCH scheduling parameters carried in the message are E-DCH scheduling parameters being used by the user equipment.
Step 203: the core network initiates a relocation request message to a target wireless access network system, wherein the relocation request message carries a transparent container from a source wireless network controller to a target wireless network controller, and the transparent container from the source wireless network controller to the target wireless network controller comprises a wireless resource control container added with the E-DCH scheduling parameter;
step 204: the target wireless access network system returns a relocation confirmation message to the core network;
step 205: a core network initiates a relocation command to a source wireless access network system;
step 206: and the target wireless access network system judges whether to initiate a reconfiguration process.
After the relocation is completed, the target wireless access network system judges whether the received E-DCH scheduling parameter is consistent with the E-DCH scheduling parameter determined by the target wireless access network according to the local strategy, if not, the target wireless access network system initiates a reconfiguration process to the user equipment in time to update the scheduling parameter, so that the scheduling is more accurate; if the data are consistent, no operation is performed, and the scheduling continuity is guaranteed.
In the above two embodiments, the source radio access network system and the target radio access network system are any one of the following radio access network systems: a radio access network system composed of a radio access network controller and a node B, or a radio access network system composed of an enhanced node B.
In order to implement the above method, the present invention further provides a radio access network node, where the radio access network node includes a relocation module and a scheduling optimization module connected to each other, where:
the relocation module is configured to execute a relocation process, and specifically includes: when the wireless access network node is used as a node of a source wireless access network system to perform relocation, the E-DCH scheduling parameter of the user equipment is sent to a target wireless access network system through signaling so as to be used by the target wireless access network system; when the wireless access network node is used as a node of a target wireless access network system for relocation, the wireless access network node is also used for receiving an E-DCH scheduling parameter;
and the scheduling optimization module is used for determining the E-DCH scheduling parameters of the user equipment according to the local strategy, judging whether the received E-DCH scheduling parameters are consistent with the determined E-DCH scheduling parameters, and initiating a reconfiguration process to the user equipment to update the scheduling parameters only when the received E-DCH scheduling parameters are inconsistent with the determined E-DCH scheduling parameters.
As described above, the radio access network node directly sends the signaling carrying the E-DCH scheduling parameter to the target radio access network system, or sends the signaling carrying the E-DCH scheduling parameter to the target radio access network system through the core network.
The signaling is any one or a combination of the following messages: a relocation request message, a relocation required message or a handover request message.
The mode of carrying the E-DCH scheduling parameter by the signaling is to add the E-DCH scheduling parameter in a radio resource control container.
The method for carrying the E-DCH scheduling parameter by the signaling is to fill the cell related to the E-DCH scheduling parameter in the signaling.
The radio access network node is a radio access network controller or an enhanced node B.
The E-DCH scheduling parameter in the invention is a control parameter for scheduling the E-DCH of the user equipment, and comprises any one or the combination of the following parameters: a happy bit delay condition, a period for which the user equipment sends request scheduling information at the time of zero grant, and a period for which the user equipment sends request scheduling information at the time of non-zero grant, wherein:
(1) happy bit delay condition (Happy bit delay condition): the method comprises the steps that the delay of sending happy bit (HappyBit) by user equipment is determined, the user equipment requests resources from an E-DCH serving node B by sending scheduling information and the happy bit (HappyBit), and the information is required for allocating wireless resources when the node B performs scheduling;
(2) a period (periodic scheduling Info-no grant) for requesting scheduling information sent by the ue at zero grant: indicating a period in which the user equipment transmits the request scheduling information at the time of zero grant.
(3) A period (periodic scheduling Info-grant) for the ue to send a request for scheduling information when the ue is not authorized with zero: indicating a period in which the user equipment transmits the request scheduling information when the grant is non-zero.
In the invention, the source wireless access network system informs the scheduling related parameters to the target wireless access network system for the target wireless access network system to carry out E-DCH scheduling, and the target wireless access network system initiates a reconfiguration process to the user equipment to update the scheduling parameters thereof only when the received E-DCH scheduling parameters are inconsistent with the determined E-DCH scheduling parameters of the user equipment, thereby ensuring the scheduling efficiency and accuracy of the user equipment and the target wireless access network and reducing the possibility of carrying out physical resource reconfiguration.
Claims (14)
1. An E-DCH scheduling optimization method, characterized in that the method comprises:
when relocation is carried out, the source wireless access network system sends an enhanced dedicated channel (E-DCH) scheduling parameter of the user equipment to the target wireless access network system through a signaling;
after the relocation is completed, the target wireless access network system judges whether the received E-DCH scheduling parameter is consistent with the E-DCH scheduling parameter of the user equipment determined by the target wireless access network system, and initiates a relocation process to the user equipment to update the scheduling parameter of the user equipment only when the received E-DCH scheduling parameter is inconsistent with the E-DCH scheduling parameter of the user equipment.
2. The method of claim 1, wherein: and the source wireless access network system directly sends a signaling carrying the E-DCH scheduling parameter to the target wireless access network system, or sends the signaling carrying the E-DCH scheduling parameter to the target wireless access network system through a core network.
3. The method of claim 1, wherein: the signaling is any one or a combination of the following messages: a relocation request message, a relocation required message or a handover request message.
4. The method of claim 1, wherein: the mode of carrying the E-DCH scheduling parameter by the signaling is to add the E-DCH scheduling parameter in a radio resource control container.
5. The method of claim 1, wherein: the mode of carrying the E-DCH scheduling parameters by the signaling is that a 'radio resource control container' added with the E-DCH scheduling parameters is included in a 'transparent container from a source radio network controller to a target radio network controller'.
6. The method of claim 1, wherein: the method for carrying the E-DCH scheduling parameter by the signaling is to fill and write the cell related to the E-DCH scheduling parameter in the signaling.
7. The method of claim 1, wherein the source wireless access network system and target wireless access network system are: a radio access network system formed by a radio access network controller and a node B, or a radio access network system formed by an enhanced node B.
8. The method of claim 1, wherein: the E-DCH scheduling parameter refers to a control parameter for scheduling the E-DCH of the user equipment, and comprises any one or the combination of the following parameters: the method comprises the steps of a happy bit delay condition, a period for sending request scheduling information by user equipment when zero authorization is carried out, and a period for sending request scheduling information by the user equipment when non-zero authorization is carried out.
9. A radio access network node, comprising a relocation module and a scheduling optimization module connected to each other, wherein:
the relocation module is configured to execute a relocation process, and specifically includes: when the wireless access network node is used as a node of a source wireless access network system to perform relocation, the E-DCH scheduling parameter of the user equipment is sent to a target wireless access network system through signaling so as to be used by the target wireless access network system; when the wireless access network node is used as a node of a target wireless access network system for relocation, the wireless access network node is also used for receiving an E-DCH scheduling parameter;
the scheduling optimization module is used for determining the E-DCH scheduling parameters of the user equipment according to the local strategy, judging whether the received E-DCH scheduling parameters are consistent with the determined E-DCH scheduling parameters, and initiating a reconfiguration process to the user equipment to update the scheduling parameters only when the received E-DCH scheduling parameters are inconsistent with the determined E-DCH scheduling parameters.
10. The radio access network node of claim 9, wherein: and the wireless access network node directly sends a signaling carrying the E-DCH scheduling parameter to the target wireless access network system or sends the signaling carrying the E-DCH scheduling parameter to the target wireless access network system through a core network.
11. The radio access network node of claim 9, wherein: the signaling is any one or a combination of the following messages: a relocation request message, a relocation required message or a handover request message.
12. The radio access network node of claim 9, wherein: the mode of carrying the E-DCH scheduling parameter by the signaling is to add the E-DCH scheduling parameter in a radio resource control container.
13. The radio access network node of claim 9, wherein: the method for carrying the E-DCH scheduling parameter by the signaling is to fill and write the cell related to the E-DCH scheduling parameter in the signaling.
14. The radio access network node of claim 9, wherein: the radio access network node is a radio access network controller or an enhanced node B.
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