CN101583195B - Data transmission method, device and system - Google Patents

Abstract

The embodiment of the invention relates to a data sending method, a device and a system, wherein the data sending method comprises the following steps: receiving service data including diversity indication information; and selecting a diversity channel, a non-diversity channel of the main diversity cell or the non-diversity channel of the diversity cell according to the diversity indication information to transmit the service data. The data transmission device includes: a receiving module, configured to receive service data including diversity indication information; and the sending processing module is used for selecting a diversity channel, a non-diversity channel of the main diversity cell or a non-diversity channel of the diversity cell according to the diversity indication information to send the service data. The data transmission system comprises the data transmission device. The data transmission method, the device and the system provided by the embodiment of the invention can select the diversity channel, the diversity cell or the non-diversity channel of the non-diversity cell to transmit the service data when the data is transmitted, and can improve the utilization rate of modulation resources.

Description

Data transmission method, device and system

technical field

The embodiments of the present invention relate to the technical field of communications, and in particular, to a data sending method, device, and system. the

Background technique

Baseband processing is a key technology in wireless communication technology. Its main function is to send the FP data sent by the wireless network controller to the base station for encoding multiplexing, physical channel mapping, modulation, scrambling and combining, and then send it to the radio frequency subsystem. Finally, it is sent to the air interface through the antenna feeder subsystem. the

Due to the harsh wireless propagation environment, in cellular mobile communications, the transmitted signal of the base station often needs to go through multiple reflections, scattering and refraction to reach the receiving end of the mobile station, which will cause multipath fading of the signal. In a fading environment, multi-antenna diversity technology can effectively improve the performance of wireless communication systems. Multi-antenna diversity technology is to transmit and process signals through multiple spatially separated antennas to achieve space diversity. This technology requires that the antennas be far enough apart so that the fading suffered by the signals from each antenna after passing through the channel is irrelevant. , and when the non-diversity channel is established, it is usually established automatically in the main cell. The current WCDMA system uses open-loop and closed-loop transmit diversity techniques. the

In the process of realizing the present invention, the inventor found that at least the following technical problems exist in the prior art: multiple sets of modulation resources need to be occupied when sending data in a diversity mode, while in the prior art only non-diversity channels are established in the main cell , which is likely to cause a waste of modulation resources. the

Contents of the invention

The purpose of the embodiments of the present invention is to provide a data transmission method, device and system to make full use of modulation resources and reduce waste of modulation resources. the

In order to achieve the above purpose, an embodiment of the present invention provides a method for sending data, including:

Receive service data including diversity indication information;

Selecting the diversity channel, the non-diversity channel of the main cell or the non-diversity channel of the diversity cell according to the diversity indication information to send service data, specifically including:

When the cell diversity indication and/or MIMO cell indication is valid, and the channel diversity indication is valid, select the diversity channel of the main cell and the diversity cell for service data transmission;

Or when the cell diversity indication and/or MIMO cell indication is valid, and the non-diversity channel of the master cell is instructed to send the service data, select the non-diversity channel of the master cell to send the service data;

Or when the cell diversity indication and/or the MIMO cell indication is valid and the non-diversity channel of the diversity cell is instructed to transmit the service data, select the non-diversity channel of the diversity cell to transmit the service data. the

The embodiment of the present invention also provides a data sending device, including:

A receiving module, configured to receive service data including diversity indication information;

The sending processing module is used to select the diversity channel, the non-diversity channel of the main cell or the non-diversity channel of the diversity cell to send service data according to the diversity indication information, specifically including:

When the cell diversity indication and/or MIMO cell indication is valid, and the channel diversity indication is valid, select the diversity channel of the main cell and the diversity cell for service data transmission;

Or when the cell diversity indication and/or MIMO cell indication is valid, and the non-diversity channel of the master cell is instructed to send the service data, select the non-diversity channel of the master cell to send the service data;

Or when the cell diversity indication and/or the MIMO cell indication is valid and the non-diversity channel of the diversity cell is instructed to transmit the service data, select the non-diversity channel of the diversity cell to transmit the service data. the

An embodiment of the present invention also provides a data sending system, including the above-mentioned data sending device. the

In the data transmission method, device and system provided by the embodiments of the present invention, by considering the antennas of two cells as a resource group, after receiving service data including diversity indication information, a diversity channel or a non-diversity channel is selected according to the diversity indication information The service data is sent, and the non-diversity channel of the diversity cell or the main cell can be selected for service data transmission, which can make full use of modulation resources and avoid waste of resources.

Description of drawings

Fig. 1 is a schematic flow diagram of an embodiment of the data sending method of the present invention;

Fig. 2 is a schematic structural diagram of Embodiment 1 of the data sending device of the present invention;

FIG. 3 is a schematic structural diagram of Embodiment 2 of the data sending device of the present invention;

Fig. 4 is a schematic structural diagram of a specific embodiment of the present invention. the

Detailed ways

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

In the embodiment of the present invention, two cells are regarded as a resource group, and each cell sets its own timing information, common channel information, and other control information as required, and allocates modulation resources and antenna resources. When performing cell diversity or when the above two cells are MIMO cells, one of the cells can be used as a diversity cell, and the other cell can be used as a master cell. At this time, the two cells use common timing information, common channel information and other control information. , Diversity channels and non-diversity channels can be established in the main cell, and non-diversity channels can also be established in the diversity cell. The main and diversity data can be sent from the antennas of the main cell and/or diversity cell respectively. Fig. 1 is a schematic flow diagram of an embodiment of the data sending method of the present invention, as shown in Fig. 1, comprising the following steps:

Step 101, receiving service data including diversity indication information; in this embodiment, by adding diversity indication information indicating whether to perform cell diversity or channel diversity, the information is sent to the data sending device;

Step 102: Select a diversity channel, a non-diversity channel of the primary cell, or a non-diversity channel of the diversity cell according to the diversity indication information to transmit service data. In this step, the data sending device determines whether to perform cell diversity according to the received diversity indication information, and in the case of cell diversity, use a diversity channel for service data transmission, or select a non-diversity channel for service data transmission. When the diversity channel transmits service data, it may also indicate whether to select the master cell or the non-diversity channel of the diversity cell to transmit service data. For the case of MIMO cells, it can also be regarded as the case of performing cell diversity. the

In the embodiment of the present invention, by using the diversity indication information, and the data sending device can choose to use the non-diversity channel of the primary cell or the diversity cell for service data transmission according to the above diversity indication information, the modulation resources of the cell can be effectively used, and resource waste can be reduced. . the

In the foregoing embodiments of the present invention, selecting a channel according to the diversity indication information to transmit service data may specifically include the following situations:

When the cell diversity indication and/or MIMO cell indication is valid, that is, when cell diversity is performed, one of the two cells in the same resource group can be used as the diversity cell, and the other cell can be used as the main collection cell, and when the diversity channel indication When it is valid, use the diversity channel of the diversity cell and the master cell to send service data; when the channel diversity indication is invalid and instructs the non-diversity channel of the master cell to send the service data, select the non-diversity channel of the master cell for business For data transmission, if the non-diversity channel of the diversity cell is instructed to transmit the service data, select the non-diversity channel of the diversity cell to transmit the service data. the

In addition, when the cell diversity indication is valid, the control information and data information of the diversity cell or the main cell can be selected as common channel control information for service data transmission. the

In this embodiment, non-diversity channels can be established in both the master cell and the diversity cell of a resource group. When indicating to use the non-diversity channel for service data transmission, you can choose the non-diversity channel from the master cell or the non-diversity channel from the diversity cell. Diversity channel transmission, so that the modulation resources of the two cells can be fully utilized to avoid waste of resources. the

Correspondingly, the embodiment of the present invention also provides a data sending device. FIG. 2 is a schematic structural diagram of Embodiment 1 of the data sending device of the present invention. As shown in FIG. 2 , it includes: a receiving module 11 and a sending processing module 12, wherein the receiving The module 11 is used to receive service data including diversity indication information; the transmission processing module 12 is used to select a diversity channel, a non-diversity channel of the main cell or a non-diversity channel of the diversity cell to transmit service data according to the diversity indication information. the

In this embodiment, non-diversity channels are established in both the main cell and the diversity cell, and the service data transmitted through the non-diversity channel can be transmitted from the non-diversity channel of the main cell or the non-diversity channel of the diversity cell, so that the above-mentioned Resource group modulation resources to avoid resource waste. the

Figure 3 is a schematic structural diagram of the second embodiment of the data transmission device of the present invention. As shown in Figure 3, the data transmission device includes: a receiving module 21, a transmission processing module 22 and a control selection module 23, wherein the receiving module 21 is used to receive The service data of information; the transmission processing module 22 can be divided into a channel selection unit 221 and a transmission unit 222, and the channel selection unit 221 is used to select a diversity channel, a non-diversity channel of the main cell or a non-diversity channel of the diversity cell according to the diversity indication information Channel; the sending unit 222 is used to send service data according to the channel selected by the channel selection unit; the control selection module 23 is used to select the same control information and data information to control the sending unit 222 of the main cell or the diversity cell to send service data. the

In the above embodiment, when transmitting service data, the channel selection unit selects a channel for service data transmission according to the diversity indication information, which can make full use of the channel resources of the diversity cell and the main cell. the

The embodiment of the present invention also provides a data transmission system, including the data transmission device mentioned in the above embodiment. In this embodiment, the above data transmission system can be two base stations under the same network controller, for example, it can be WCDMA The two base stations in the system, when receiving the data sent by the wireless network controller, select the corresponding channel according to the diversity indication information, perform code multiplexing, modulation, combination and other processing and send it to the radio frequency subsystem, and pass through the antenna feeder The subsystem sends to the air interface. the

Fig. 4 is a schematic structural diagram of a specific embodiment of the present invention. As shown in Fig. 4, cell A and cell B in this embodiment belong to the same resource group. , external interface information and encoding information) are transmitted along the direction of the dotted line, and are processed using different centralized timing, external interface and encoding interfaces respectively. When performing cell diversity, the main cell A automatically occupies the modulation resources of the diversity cell B, and performs data transmission along the solid line in the figure, using the same centralized timing, external interface and coding interface. The channel (Dedicated Physical Channel, hereinafter referred to as: DPCH) is a diversity channel, then the DPCH or F-DPCH modulation resource of cell A realizes the modulation processing of the main set data, and automatically occupies the corresponding DPCH modulation resource of cell B to realize the modulation of diversity data Processing, modulation processing specifically includes operations such as channel combining, antenna combining, and intermediate frequency interface. Therefore, one channel modulation resource of cell B is occupied by the diversity channel of cell A, and the number of DPCH or F-DPCH channels implementing non-diversity in cell B is reduced by one. If there is no modulation resource available in cell A, a non-diversity channel can be established in cell B to fully utilize the resources of the two cells. At the same time, when the antenna is output, the antenna cross function can be added to realize the flexible transmission of data from two cells. the

In the above-mentioned service data transmission process, the modulation processing module corresponding to the antenna antA of cell A always uses the timing and control information of cell A; the modulation processing module corresponding to the antenna antB of cell B uses diversity indication information, such as cell diversity Indication, MIMO cell enablement, or channel diversity indication of DPCH or F-DPCH of antA, select data information or control information of antA or antB, for the selection of data information and control information, the control selection module at the top layer of the modulation module can be used accomplish. Specifically, the following situations may be included:

When the cell diversity indication or MIMO cell enablement is valid, the resource group composed of cell A and cell B selects and uses the timing and control information, IPDL processing information, data information and control information of the common channel, and combined processing information of the cell where antA is located. And output it to the modulation processing module of antB;

When both the cell diversity indication and the MIMO cell enable are invalid, select the control information and data information of antB to output to the modulation processing module of antB;

When the cell diversity indication or MIMO cell enablement is valid, and the channel diversity indication of antA's DPCH or F-DPCH is also valid at the same time, select the data information and control information of antA's DPCH or F-DPCH diversity channel (that is, 128 channels round robin information) output to the modulation processing module of antB;

When the cell diversity indication or MIMO cell enablement is invalid, or the channel diversity indication of the DPCH or F-DPCH of antA is invalid, select the data information and control information data of the DPCH or F-DPCH of antB to the modulation processing module of antB. the

The data transmission method, device and system provided by the above-mentioned embodiments of the present invention can select the diversity channel of the main cell and the diversity cell according to the received diversity indication information by using the resources of the two cells as a resource group, or select The services are transmitted on non-diversity channels of collective cells or diversity cells, which can make full use of modulation resources and avoid waste of modulation resources. the

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: it still Modifications or equivalent replacements can be made to the technical solutions of the present invention, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present invention. the

Claims (6)

1. a data transmission method for uplink is characterized in that, comprising:

Reception comprises the business datum of branch collection indication information;

Select the not diversity channel of diversity channel, main collection sub-district or the not diversity channel of Fen Ji sub-district to carry out the business datum transmission according to said branch collection indication information, specifically comprise:

In cell diversity indication and/or the indication of MIMO sub-district effectively, and channel diversity indicates when effective, selects the diversity channel of main collection sub-district and Fen Ji sub-district to carry out the business datum transmission;

Perhaps in cell diversity indication and/or the indication of MIMO sub-district effectively, and the not diversity channel of the main collection of indication sub-district is when sending said business datum, selects the not diversity channel of main collection sub-district to carry out business datum and sends;

Perhaps in cell diversity indication and/or the indication of MIMO sub-district effectively, and the not diversity channel of indication Fen Ji sub-district is when sending said business datum, selects the not diversity channel of Fen Ji sub-district to carry out business datum and sends.

2. data transmission method for uplink according to claim 1 is characterized in that, indicates in the indication of said cell diversity and/or MIMO sub-district also to comprise when effective:

Main collection sub-district is used identical control information and data message to carry out business datum with the Fen Ji sub-district and is sent.

3. a data sending device is characterized in that, comprising:

Receiver module is used to receive the business datum that comprises branch collection indication information;

Send processing module, be used for selecting the not diversity channel of diversity channel, main collection sub-district or the not diversity channel of Fen Ji sub-district to carry out the business datum transmission, specifically comprise according to said branch collection indication information:

In cell diversity indication and/or the indication of MIMO sub-district effectively, and channel diversity indicates when effective, selects the diversity channel of main collection sub-district and Fen Ji sub-district to carry out the business datum transmission;

Perhaps in cell diversity indication and/or the indication of MIMO sub-district effectively, and the not diversity channel of the main collection of indication sub-district is when sending said business datum, selects the not diversity channel of main collection sub-district to carry out business datum and sends;

Perhaps in cell diversity indication and/or the indication of MIMO sub-district effectively, and the not diversity channel of indication Fen Ji sub-district is when sending said business datum, selects the not diversity channel of Fen Ji sub-district to carry out business datum and sends.

4. data sending device according to claim 3 is characterized in that, said transmission processing module comprises:

The channel selected cell is used for selecting diversity channel, the not diversity channel of main collection sub-district or the not diversity channel of Fen Ji sub-district according to said branch collection indication information, specifically comprises:

In cell diversity indication and/or the indication of MIMO sub-district effectively, and channel diversity indicates when effective, selects the diversity channel of main collection sub-district and Fen Ji sub-district;

Perhaps effectively, and the not diversity channel of the main collection of indication sub-district is selected the not diversity channel of main collection sub-district when sending said business datum in cell diversity indication and/or the indication of MIMO sub-district;

Perhaps effectively, and the not diversity channel of indication Fen Ji sub-district is selected the not diversity channel of Fen Ji sub-district when sending said business datum in cell diversity indication and/or the indication of MIMO sub-district;

Transmitting element is used for carrying out business datum according to the channel that the channel selected cell is selected and sends.

5. data sending device according to claim 3 is characterized in that, also comprises:

Module is selected in control, is used to select identical control information and the main transmission processing module that collects sub-district or Fen Ji sub-district of data message control to carry out business datum and sends.

6. a data Transmission system is characterized in that, comprises the arbitrary described data sending device of claim 3-5.

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