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Communication system access method, downlink information transmitting method, terminal and base station

A communication system and base station technology, applied in the field of communication, can solve problems such as wasting frequency band resources

Active Publication Date: 2013-03-06
HONOR DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present application provide a method for a narrowband terminal to access a communication system and a narrowband terminal to solve the problem of wasting frequency band resources

Method used

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  • Communication system access method, downlink information transmitting method, terminal and base station
  • Communication system access method, downlink information transmitting method, terminal and base station
  • Communication system access method, downlink information transmitting method, terminal and base station

Examples

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no. 1 example

[0041] see figure 2 , which is the flow chart of the first embodiment of the method for narrowband terminal accessing the communication system of the present application:

[0042] Step 201: The narrowband terminal receives the extended PBCH sent by the base station.

[0043] Wherein, before the narrowband terminal receives the extended PBCH sent by the base station, it can also read the received existing PBCH first. When the existing PBCH carries the identification information indicating that the current communication system supports the narrowband terminal, the narrowband terminal performs receiving the extended PBCH again. . Wherein, the extended PBCH and the existing PBCH may be located in the same subframe.

[0044] Wherein, the configuration method of the extended PBCH may include: the extended PBCH is configured on several OFDM (Orthogonal Frequency Division Multiple, Orthogonal Frequency Division Multiplexing) symbols after the existing PBCH, wherein the existing PBC...

no. 2 example

[0055] see Figure 3A , is the flow chart of the second embodiment of the method for the narrowband terminal to access the communication system of the present application, and this embodiment combines Figure 3B and Figure 3C shows the process of the narrowband terminal accessing the communication system, wherein Figure 3B It is a schematic diagram of downlink resource configuration of a narrowband UE in this embodiment, Figure 3C It is a schematic diagram of the uplink resource configuration of the narrowband UE in this embodiment:

[0056] Step 301: the narrowband UE receives the SS sent by the base station.

[0057] In the LTE system, no matter the system bandwidth is 5M, 10M or 20M, the six central PRBs of its time-frequency resources are all smaller than 1.4M, which meets the receiving requirements of narrowband UEs. In the prior art, the base station will send the SS on the six central PRBs, and send the existing PBCH after sending the SS, such as Figure 3B As s...

no. 3 example

[0081] The execution process of this third embodiment is substantially the same as that of the aforementioned second embodiment, the difference is that in this embodiment, the extended PBCH is only used to indicate the position of the extended control channel domain in the time-frequency resource block, and does not indicate the location of the extended PDSCH The position in the time-frequency resource block, the position of the extended PDSCH in the time-frequency resource block can be dynamically scheduled by the extended PDCCH, that is, the extended PDSCH can be located in any position of the time-frequency resource block, as long as the frequency domain resources occupied by it are not greater than The bandwidth range acceptable to the narrowband UE is enough.

[0082] When this embodiment is applied, since the extended PDCCH, and the PHICH, PCFICH and other channels interspersed with the PDCCH on the same dedicated control channel domain are not in the same frequency band ...

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Abstract

An embodiment of the invention discloses a narrow-band terminal and a communication system access method thereof. The method includes: the narrow-band terminal receives expansion PBCH (physical broadcast channel) sent by a base station; the narrow-band terminal reads special configuration information borne on the expansion PBCH; and the narrow-band terminal configures downlink resources and uplink resources according to the special configuration information and is accessed to the communication system after configuration is completed. Dividing a special frequency band for the narrow-band terminal in existing frequency band is not needed, the narrow-band terminal is provided with the expansion PBCH accordant with the bandwidth receiving capability of the narrow-band terminal, and uplink and downlink resource configuration of the narrow-band terminal is completed on the basis of the expansion PBCH, and accordingly the narrow-band terminal can make full use of existing frequency band resources to access to the communication system.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular to a method for a narrowband terminal to access a communication system, a method for sending downlink information, a narrowband terminal and a base station. Background technique [0002] M2M (Machine to Machine, Internet of Things) technology is a network that connects items to the Internet through information sensing devices to realize intelligent identification and management. In the ever-growing M2M technology, in order to reduce the cost of terminals, low-end UEs with small bandwidths (Low end UEs) are required to achieve communication, such as terminals supporting 1.4M radio frequency bandwidth. Such terminals are also called UEs because they support a small bandwidth. Narrowband terminal. In order to support M2M communication in the GSM (Global System of Mobile communication, global system for mobile communication) frequency band, it is necessary to mak...

Claims

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Application Information

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IPC IPC(8): H04W48/08H04W72/04
CPCH04W72/0406H04W72/20
Inventor 李龠甄斌朱松
Owner HONOR DEVICE CO LTD
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