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PRACH configuration method and device for special cell

A technology of a special cell and a configuration method, which is applied in the field of communication and can solve problems such as access conflicts of primary and secondary carriers

Active Publication Date: 2020-04-28
CHENGDU TD TECH LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0021] This application provides a PRACH configuration method and equipment for a special cell to solve the problem of random access conflicts between primary and secondary carriers in a special cell

Method used

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  • PRACH configuration method and device for special cell
  • PRACH configuration method and device for special cell
  • PRACH configuration method and device for special cell

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Embodiment Construction

[0046] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and examples.

[0047] The PRACH configuration in 3GPP TS36.211 is shown in the following table:

[0048] Table 5.7.1-2:

[0049] Frame structure type 1 random access configuration for preambleformats 0-3

[0050]

[0051] The above table defines 64 kinds of PRACH configurations. The PRACH configuration index (PRACH Configuration Index) is 0~63 respectively. Each PRACH configuration has a corresponding preamble format (Preamble Format), system frame number (System frame number), subframe Frame number (Subframe number).

[0052] The flow of the PRACH configuration method for the special cell in this application is as follows: figure 2 As shown, it mainly includes the following steps:

[0053] Step 201: Divide the PRACH configuration index into multiple PRA...

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Abstract

The invention discloses a PRACH configuration method for special cells, and the method comprises the steps: dividing a physical random access channel (PRACH) configuration index into a plurality of PRACH configuration index groups, wherein random access subframes corresponding to the PRACH configuration index in each PRACH configuration index group are different from one another; and a base station side configuring one PRACH configuration index group for each special cell from the divided PRACH configuration index groups, and configuring the PRACH configuration indexes of main and auxiliary carriers in the special cells as different values in the PRACH configuration index groups. The invention further discloses a corresponding device. Through the technical scheme disclosed by the invention, the problem of random access conflict of the main and auxiliary carriers in the special cells can be solved.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular to a PRACH configuration method and equipment for a special cell. Background technique [0002] In order to provide a higher service rate, 3GPP proposed a downlink rate requirement of 1Gbps in the LTE-Advanced stage. At the same time, limited by factors such as the shortage of wireless spectrum resources, the spectrum resources owned by many operators are often discontinuous, and each single frequency band is difficult to meet the bandwidth requirements of LTE-Advanced. Therefore, 3GPP introduced Carrier Aggregation (CA) in Release 10 (TR36.913), which aggregates component carriers of the same frequency band and different frequency bands into a larger bandwidth, doubles the peak rate of users, and can aggregate 40MHz to 100MHz bandwidth , providing a peak rate of 300Mbps to 750Mbps or even greater than 1Gbps (4x4MIMO) to meet the requirements of 3GPP. [000...

Claims

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Application Information

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IPC IPC(8): H04L5/00H04W72/04H04W74/08
CPCH04L5/001H04L5/003H04W72/0446H04W72/0453H04W74/0841
Inventor 朱玉梅张禹强徐绍君周武云袁乃华
Owner CHENGDU TD TECH LTD
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