Device and method for transmitting/receiving signal in mobile communication system supporting carrier
A technology of information configuration and dual connection, which is applied to the separation device of transmission path, wireless communication, transmission system, etc., and can solve the problem of reducing the applicability of CA function and so on.
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Embodiment 1
[0088] In the following description, it is assumed that a UE is simultaneously connected to and communicates with a plurality of eNBs. It is also assumed that one bearer configured by one eNB and UE can be divided into multiple eNBs. In these cases, a method of adjusting the amount of data to be transmitted to each eNB is provided as follows.
[0089] Image 6 It is a signal flow diagram describing the process of establishing PBR for a UE that has established multiple bearers in an LTE system according to the first embodiment of the present disclosure. Image 6 is a flowchart describing the logical channel prioritization process when multiple connections are supported according to the present disclosure.
[0090] refer to Image 6 , it is assumed that UE 601 is connected to eNB1 603 and eNB2 605 at the same time. For this, it is assumed that the UE performs a connection procedure with the eNB1 supporting multiple connections through a procedure such as random access or the...
Embodiment 2
[0110] In the following description, according to various embodiments of the present disclosure, a UE reports a plurality of classes and performs HARQ using one of the classes.
[0111]In order to perform transmission / reception of data between the UE and the eNB, the eNB needs to detect the capability of the UE. For example, the eNB needs to have the UE's maximum downlink data rate, the UE's HARQ buffer capability, etc. to transmit downlink data to the UE. Capability information on transmission / reception of downlink data of the UE is reported to the eNB in the form of the UE type. Table 2 below is the "UE category" as defined in specification 36.306. UE categories can be classified with respect to the ability to receive downlink data as follows:
[0112] Category 1 is 10Mbps; Category 2 is 50Mbps; Category 3 is 100Mbps; Category 4 is 150Mbps; Category 5, 6, and 7 is 300Mbps; and Category 8 is 3Gbps. Since the class of the related art requires a relatively high level of pr...
Embodiment 3
[0162] Embodiment 3 is related to the operation of configuring SPS and TTI bundling between eNB and UE.
[0163] TTI bundling is a process of transmitting the same data through four consecutive subframes in order to solve a lack of reverse transmission output power occurring during a cell change. Semi-Persistent Scheduling (SPS) is a service that allocates fixed resources to efficiently support the continuous creation of fixed-size packets at a fixed period, such as VoIP service. The SPS reduces the amount of PDCCH used and increases the number of VoIP service users that can be supported at one time.
[0164] When the UE operates in a macro cell, TTI bundling and SPS can be applied simultaneously, but the efficiency may be reduced instead. Applying TTI bundling means changing the state of the UE in the change of the macro cell. In this case, the channel state of the UE is unstable. Therefore, it is more efficient to allocate dynamic transmission resources by reflecting the ...
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