Implementation method of random access of carrier aggregation enhancement

A technology of random access and carrier aggregation, applied in electrical components, wireless communication, etc., can solve problems such as large impact of standards, inability to know, and inability to determine operations, and achieve the effect of solving UE conflicts and delay problems
CN103096489AActive Publication Date: 2013-05-08POTEVIO INFORMATION TECH
3 Cites 22 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
POTEVIO INFORMATION TECH
Publication Date
2013-05-08

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides an implementation method of random access of carrier aggregation enhancement. The implementation method of the random access of the carrier aggregation enhancement is applied to the situation that a cell carrying out random access to user equipment (UE) is not a primary service cell (PCell) and comprises the following steps: a network side chooses one secondary service cell (SCell) from a timing advance (TA) group of the UE according to dedicated lead code resources and / or load conditions, the network side indicates the lead code used by the UE to carry out random access and physical random access channel (PRACH) resource through physical downlink control channel (PDCCH) instructions on the chosen SCell scheduling cell, the UE transmits a specified lead code on the specified PRACH resources of the networks side, the network side receives the lead code on the specified PRACH resources, and therefore acquires the identifications of the UE, and the network side indicates to transmit the physical downlink shared channel (PDSCH) resource locations of corresponding TA information according to the non-competition mode random access process carried out by the UE.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to the technical field of wireless communication, in particular to a method for realizing random access in carrier aggregation enhancement. Background technique

[0002] Random access technology is an important technology of medium access control in communication system. Random access is the access process of user equipment before starting to communicate with the network. It is mainly used for the establishment and establishment of user initial access, radio resource control (RRC) connection reestablishment, handover, uplink out-of-sync when uplink and downlink data arrives, and positioning. Uplink synchronization of the network. There are mainly two modes of random access. If there is a dedicated preamble, contention-based random access is used, and if there is no dedicated preamble, non-contention-based random access is used.

[0003] figure 1 It shows the contention mode random access process in the prior art, which ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More