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Downlink resource indicating method and device

A resource indication and indication technology, applied in the direction of selection devices, radio transmission systems, electrical components, etc., can solve problems such as time-frequency resource allocation information transmitted by evolved base stations that are not clearly specified

Active Publication Date: 2008-10-22
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the 3GPP LTE system, it has not been clearly stipulated what signaling format the evolved base station should use to transmit the time-frequency resource allocation information

Method used

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  • Downlink resource indicating method and device
  • Downlink resource indicating method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] This embodiment mainly introduces a system for downlink resource indication and a device therein.

[0046] see figure 1 , the system in this embodiment includes an evolved base station 101 and a user equipment 102 .

[0047] The evolved base station 101 performs time-frequency resource scheduling according to the scheduling rule, and generates signaling for notifying each user equipment 102 of the time-frequency resource allocation. The front end of the signaling includes static resource indication information, and the back end includes dynamic resource indication information, or further This signaling is then broadcast in the system, including a sequence of user equipment identities. Further, according to the scheduling result of the time-frequency resource, the data is delivered to each user equipment 102 in the corresponding time-frequency resource.

[0048]The user equipment 102 receives and parses the signaling, learns the allocated time-frequency resources accor...

Embodiment 2

[0058] see Figure 4 , the main process of the downlink resource indication method in this embodiment is as follows:

[0059] Step 401: The evolved base station 101 performs time-frequency resource scheduling according to the scheduling rule. The scheduling of time-frequency resources can be based on resource block granularity, subband granularity, or a combination of the two granularities.

[0060] Step 402: The evolved base station 101 generates signaling according to the scheduling result, where the signaling includes static resource indication information and dynamic resource indication information, and may also include transmission mode and allocation duration. The evolved base station 101 broadcasts the signaling.

[0061] Step 403: The user equipment 102 receives the signaling through the broadcast channel.

[0062] Step 404: The user equipment 102 parses the signaling, obtains static resource indication information and dynamic resource indication information, and le...

Embodiment 3

[0064] In this embodiment, each dynamic resource indication information includes a user equipment identifier and a bitmap that only identifies time-frequency resources other than the time-frequency resources that are statically allocated. The specific process of the downlink resource indication method is as follows: Figure 5 shown:

[0065] Step 501: The evolved base station 101 performs time-frequency resource scheduling according to the scheduling rule, and uses resource blocks as the scheduling granularity. During network initialization configuration, which resource blocks are used for contiguous sub-carriers and which resource blocks are used for distributed sub-carriers are specified, and both the evolved base station 101 and the user equipment 102 are configured with this specification.

[0066] Step 502: The evolved base station 101 generates signaling according to the scheduling result. For the signaling format, please refer to Image 6 As shown, the static resource ...

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Abstract

The invention discloses a method for indicating the downgoing resource. The method is used for saving the communication resources and dispatching the communication resources flexibly and comprises the following steps that: a progression base station sends a message for indicating the time-frequency resource distribution to user equipment, in the message, a bitmap of the distributed time-frequency resource before the distribution of the time-frequency resource is identified intensively; moreover, the time-frequency resource identified in the time-frequency resource indication of each user equipment is only the vacant time-frequency resource before the distribution of the time-frequency resource in this time; the user equipment analyzes the bitmap of the distributed time-frequency resource and the time-frequency resource indication from the received message and obtains the time-frequency resource distributed for the equipment according to the analyzed message. The invention also discloses the evolution base station, the user equipment and the communication system.

Description

technical field [0001] The present invention relates to the field of computers and communications, and in particular, to a downlink resource indication method and device. Background technique [0002] One of the main research directions of the current communication system is the 3GPP Long Term Evolution (LTE) system. In the 3GPP LTE system, the Orthogonal Frequency Division Multiple Access (OFDMA) technology is the technical foundation and the The main feature is that the parameter setting of the OFDMA system will have a decisive impact on the performance of the entire system. The carrier spacing is the most basic parameter of the OFDMA system. After theoretical analysis and simulation comparison, it is finally determined to be 15kHz. The minimum resource block for uplink and downlink is 375 kHz, which is 25 sub-carriers in width, and the mapping method of data to resource blocks can be localized or distributed. The Physical Resource Block (PRB) composed of time-frequency r...

Claims

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Application Information

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IPC IPC(8): H04Q7/36H04Q7/30H04B7/208
Inventor 巢志骏顾华德张贤孝
Owner HUAWEI TECH CO LTD
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