TWI426755B - Improved uplink scheduling in a cellular system - Google Patents

Description

Improve upstream scheduling in cellular systems

The present invention discloses a method for a wireless cellular system in which each cellular cell has a control node and another node for radio network control.

In cellular communication, a project called Third Generation Partnership Project (3GPP) technology was introduced for the so-called Enhanced Uplink (EUL).

In a system that uses or supports EUL technology, there will be a division of work on the scheduling of resources for providing services to users in one of the cellular cells of the system: a control node of a cellular cell (commonly referred to as a NodeB) The first resource group (so-called "scheduled resources") will be scheduled, and another node in the system (named Radio Network Controller (RNC)) will schedule the second resource group, commonly referred to as "non- Schedule resources".

In order to facilitate scheduling in the NodeB in the system with EUL technology, a user in a cellular cell will supply the NodeB with information about certain parameters.

It is an object of the present invention to propose an improvement in the scheduling of both scheduled and non-scheduled resources in a 3GPP system providing EUL services.

The present invention provides such a solution in that the present invention discloses a method for use in a wireless cellular system in which each cellular cell has a control node and another node for radio network control. .

According to the method of the present invention, the control node of a cellular cell schedules a first resource group for users in the cellular cell and is used for wireless The node controlled by the electrical network schedules a second resource group for the user in the cellular cell, and a user in a cellular cell provides the control node for the cellular cell for use in a first resource group The information used in the schedule for the group.

Moreover, in accordance with the method of the present invention, the information provided to the control node is also provided to the node for radio network control.

According to the invention, due to the fact that the information actually provided to the control node is also provided to the node for radio network control, the node for radio network control will be able to be based on the user equipment in the cellular cell The situation of (UE) to schedule the second resource group.

In an embodiment of the invention, a user in a cellular cell uses a message header to provide the information to the node for radio network control, and in another embodiment, a user in a cellular cell Use a physical channel to provide this information.

If a physical channel is used, this channel can be an E-DCH Random Access Uplink Control Channel (E-RUCCH).

Suitably, the control node of a cellular cell provides information to the node for radio network control, and if in this case, in an embodiment, the control node can be used to enhance the data channel frame protocol ( Information is provided in one of the E-DCH FPs, and in another embodiment, the control node provides the information in a measurement report to the node for radio network control.

The present invention also discloses a control node for use in a system to which the present invention is applied.

1 illustrates a schematic example of a third generation collaborative project (3GPP) cellular communication system 100 to which the present invention may be applied. The present invention is applicable to different kinds of 3GPP systems, but in one embodiment, the present invention is applied to a wideband code division multidirectional proximity (WCDMA) system, and in another embodiment, the present invention is applied to time sharing synchronization. A code division multi-directional proximity (TD-SCDMA) system.

In the system 100, there is at least one first cellular cell 130, and there may be several users in the cellular cell. In the figure, a user symbol is used as an example. The user is shown as "UE (User Equipment)" because this term is common across such systems.

There is also a control node 120 (NodeB) for the cellular cell 130, which is particularly used to control traffic to and from UEs in the cellular cell 130. In addition to the NodeB in system 100, there is also an additional node 110 (RNC) for radio network control. It should be noted that the RNC 110 may serve more than one cellular cell, but only one cellular cell is depicted in the system 100 of Figure 1, however, Figure 1 is merely intended to provide an example of the present invention.

Figures 2 and 3 illustrate two other concepts that will be used in this article: "non-scheduled resources" and "scheduled resources."

As shown in FIG. 2, the resources referred to as "non-scheduled resources" are scheduled based on the "RN per UE" routed by the NodeB to the RNC in the RNC. The "transparent" or passive role of the NodeB in the "non-scheduled resource" case is indicated in Figure 2 by a NodeB with a dashed line and a straight arrow from the RNC to the UE (i.e., UE1-UE3).

As shown in Figure 3, the "scheduled resources" are determined by the RNC or scheduled for a certain The NodeB's total available resources for scheduling resources, and then the NodeB may schedule such resources based on "each UE" (as indicated by three UEs (ie, UE1-UE3) as shown in FIG. 3).

In order for the NodeB to properly perform its scheduling function for scheduling resources, the UE in the cell of the NodeB will supply information (so-called "scheduling information") to the NodeB.

The exact information included in the general information group (herein referred to as "scheduling information") will vary depending on the cellular standard, but some examples of scheduling information in, for example, the TD SCDMA system include the following: Regarding the information occupied by the buffer of the UE, it helps the NodeB to determine the "transmission emergency" of the UE. Path loss information, for example, for "servo" (ie, current) hive cells, and adjacent hive cells. The residual power information of the UE, which helps the NodeB to refer to how many physical resources the UE can currently utilize.

4 illustrates the principle of "scheduling information" supplied by the UE to the NodeB: the UE supplies information items 1-4 to the NodeB, and in those projects, some items are forwarded by the NodeB to the RNC. With the information supplied to the NodeB, the NodeB is able to control the scheduling resources and, with the information passed to the RNC, the RNC is able to control the non-scheduled resources. Controls from the NodeB and the RNC are indicated by means of lines from their nodes to the UE.

Of course, the information supplied from the UE to the NodeB and the information transmitted to the RNC may vary from system to system, but examples of the item numbers 1-4 in FIG. 4 are as follows: 1: HARQ information (HARQ: hybrid automatic repeat request), 2: Non-scheduled user uplink data, for example, such as signal data, 3: Scheduled user uplink data, for example, such as website browsing, 4: UE buffer occupancy per logical channel, servo cell and/or Or the cellular cell path loss of the neighboring cell and the UE power "free space".

The above-mentioned information referred to as "4" in FIG. 4 is also referred to as "scheduling information". In accordance with the present invention, the "scheduling information" is suitably forwarded from the NodeB to the RNC so that the RNC can access this information in order to enable the RNC to use this information in scheduling "non-scheduled" resources.

The NodeB appropriately forwards the "scheduling information" to the RNC in one of the following two ways: Carrying information to the RNC on an E-DCH FP (Enhanced Data Channel Frame Protocol) frame; Information is carried on the so-called "measurement report" from NodeB to RNC, as defined in the 3GPP and CCSA standards (CCSA, China Communications Standards Association).

With the present invention, since the RNC is supplied with scheduling information, the RNC can, for example, use information for: Reconfiguring the non-scheduled resources of the UE and the scheduling resources to another carrier frequency in the same cell based on, for example, the buffer occupancy related information or/and the UE power vacant space. Increase the scheduling priority of a UE. Honeycomb cell path loss is used in algorithms related to, for example, RNC's so-called Radio Resource Management (RRM).

In addition, since the RNC and the NodeB will now have access to the same information from the UE, the RNC and NodeB will always be able to schedule their respective resources (scheduled/non-scheduled) in a similar manner.

6a and 6b illustrate a schematic flow diagram of a method 600 of the present invention. The steps depicted by dashed lines are either step or alternative steps.

It has also been apparent from the above description that the method 600 of the present invention is intended for use in a wireless cellular system, and according to the method, there is a control node in each of the cellular cells (step 605), and also for the radio network. Another node of control (step 615). According to the method 600, the control node of a cellular cell schedules a first resource group for the user in the cellular cell (step 610), and the node schedule for the radio network control is a second A resource group is used for the user in the cellular cell (step 620).

According to the method 600, a user in a cellular cell provides the control node of the cellular cell with information for use in the scheduling of a first resource group (step 625), and is provided to the control node. This information is also provided to the node for radio network control (step 630).

In an embodiment, a user in a cellular cell uses a message header to provide the information to the node for radio network control (step 640), and in another embodiment, in a cellular cell The user uses a physical channel to provide this information to the node for radio network control (step 645). As shown in step 650, the physical channel is suitably an E-DCH Random Access Uplink Control Channel (E-RUCCH).

In an embodiment, as indicated by step 660, the control node via a cellular cell provides the information to the node for radio network control. in In this embodiment, as shown in step 670, the control node suitably provides information in one of the frames for enhanced data channel frame protocol (E-DCH FP), or step 675 provides the information in a measurement report. Give this node (110) for radio network control.

As shown in step 680, the information provided by a user in a cellular cell includes at least one of the following: Information about the user's buffer status; Honeycomb cell path loss information; Information about the user's remaining power.

In an embodiment, as indicated by step 685, the method can be applied to a wideband code division multidirectional proximity (WCDMA) system, or step 690, which can be applied to time division synchronous code division multidirectional proximity (TD-SCDMA). )system.

The method of the present invention can be carried out in a number of ways, either as a hardware or a soft body, or as a combination of a hard body and a soft body. The software may suitably be implemented as a computer executable code stored on a computer readable storage medium such as a hard disk drive, a magnetic disk drive, a magnetic tape, or the like.

Figure 7 is a block diagram showing a control node 700 in a system to which the present invention is applied. As indicated in Figure 7, control node 700 will include an antenna (as indicated by block 710) and will also include a receiving component 720 and a transmission component 730. In addition, control node 700 also includes a control component 740 (such as a microprocessor) and a memory 750. Moreover, control node 700 also includes an interface 760 that faces other components of the system that are remote from the UE, such as, for example, an RNC. The interface can be one of a variety of interfaces, but is preferably a landline interface, but a radio interface is also envisioned.

Since the main components of the control node 700 have been identified above with respect to functions, as well as component symbols, their components may be referred to hereinafter simply by their component symbols, for example, "member 710" instead of "antenna 710".

The control node 700 of the present invention is intended for use in a cellular cell in a wireless cellular system and is equipped with components 740, 750 and 760 to interact with nodes for radio network control (i.e., RNC).

In addition, control node 700 uses components 740 and 750 to schedule a first resource group for use in a user in a cellular cell, and uses components 710 and 720 to receive information from a user in the cellular cell for use in The first resource group is scheduled for use in a user process in a cellular cell.

Furthermore, the control node uses components 740, 750, and 760 to provide information from the user to the RNC in a frame for enhanced data channel frame protocol (E-DCH FP) or in a measurement report.

In an embodiment, the information provided by a user in a cellular cell includes at least one of the following: Information about the user's buffer status; Honeycomb cell path loss information; Information about the user's remaining power.

In an embodiment, the control node 700 is used for one of the control nodes of a wideband code division multi-directional proximity (WCDMA) system, and in another embodiment, the control node 700 is used for time-sharing synchronous code division and multi-directional proximity One of the control nodes of the (TD-SCDMA) system system.

The invention is not limited to the examples and the drawings of the embodiments described above, but may be freely varied within the scope of the appended patent application.

100‧‧‧Hive Communication System

110‧‧‧Node RNC for radio network control

120‧‧‧Control node

130‧‧‧Hive Community

140‧‧‧User Equipment (UE)

700‧‧‧Control node

710‧‧‧Antenna

720‧‧‧ receiving parts

730‧‧‧Transmission parts

740‧‧‧Microprocessor/control components

750‧‧‧Memory/component

760‧‧‧Interface/component

1 shows a system to which the present invention can be applied, and FIGS. 2-4 illustrate the prior art, and FIG. 5 illustrates features of the present invention, and FIGS. 6a and 6b illustrate a schematic flow chart of the method of the present invention, and FIG. The control node of the present invention is illustrated.

(no component symbol description)

Claims (11)

A method for use in a wireless cellular system, according to which a control node exists in each cell and another node exists for radio network control, according to the method, a cell The control node schedules a first resource group for the user in the cell, and the node for radio network control schedules a second resource group for the user in the cell. According to the method, a user in a cell provides information for use by the control node of the cell for use in the schedule of a first resource group, the method being characterized by the information provided to the control node Also provided to the node for radio network control, wherein the information is provided via the control node for a cell in one of the frames of the Enhanced Data Channel Frame Protocol (E-DCH FP) This node is controlled by the radio network. The method of claim 1, wherein the user in a cell uses a message header to provide the information to the node for radio network control. The method of claim 1, wherein the user in a cell uses a physical channel to provide the information to the node for radio network control. The method of claim 3, wherein the physical channel is an E-DCH random access uplink control channel (E-RUCCH) according to the method. The method of any one of claims 1 to 4, wherein, according to the method, the information provided by a user in a cell comprises at least one of: information about buffer status of the users; Cell path loss information; information about the remaining power of such users. The method of any one of claims 1 to 4, which is applied to a wideband code division multidirectional proximity (WCDMA) system. The method of any one of claims 1 to 4, which is applied to a time division synchronous code division multidirectional proximity (TD-SCDMA) system. A control node for a cell of a wireless cellular system, equipped with means for interacting with one of the nodes of the radio network control, and also for scheduling a first resource group for use in a cell a user component and a component configured to receive information for use in the schedule of a first resource group for use by a user in the cell, the control node being equipped to provide the information to A component of the node used for radio network control in a frame for enhanced data channel frame protocol (E-DCH FP). The control node of claim 8, wherein the information provided by a user in a cell comprises at least one of: information about buffer status of the users; cell path loss information; and remaining of the users Power information. The control node of claim 8 is for use in a control node of a wideband code division multi-directional proximity (WCDMA) system. The control node of claim 8 is for a control node of a time division synchronous code division multidirectional proximity (TD-SCDMA) system.