Implementation method and system for carrier aggregation in wireless communication system
A wireless communication system and carrier aggregation technology, applied in the field of wireless communication, can solve the problems of signal interference, resource occupation, power consumption of base stations, etc., and achieve the effect of avoiding interference
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 Embodiment 1: (TDD mode)
 In this embodiment, the cell is composed of a primary carrier and a secondary carrier. The primary carrier can adopt the TDD frame structure in the existing wireless communication system or a new frame structure. For example, the entire subframe contains only the data field and no control field. .
 This embodiment adopts the TDD frame structure of the LTE system, and all configurations comply with the LTE specification, and the UE in the TDD mode of the traditional LTE system can search for and reside on the primary carrier.
 For the primary carrier, system messages, synchronization signals, and paging messages are sent on the primary carrier; a random access channel is configured, and users perform random access on the primary carrier; the primary carrier schedules users through the physical control channel (PDCCH). Among them, the system information of the primary carrier can add some information of the secondary carrier, su...
 Embodiment 2: (FDD mode)
 In this embodiment, the cell is in the FDD mode and consists of two pairs of carriers, a pair of primary carriers and a pair of secondary carriers. The primary carrier adopts the FDD frame structure in the existing wireless communication system or a new frame structure.
 This embodiment adopts the FDD frame structure of the LTE system, and all configurations comply with the LTE specification, and the UE in the FDD mode of the traditional LTE system can search for and reside on the primary carrier.
 The FDD mode is the same as the TDD mode in the first embodiment. The method for the UE to use the resources of the secondary carrier is also the same as in the first embodiment. It is as follows:
 The process of system scheduling users to use secondary carrier resources includes: For a new type of UE (such as LTE-LAN terminal, which can be configured and used in the carrier aggregation mode of the present invention), the U...
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