Huawei Technologies Co., Limited

Osmun Biological Co., Ltd

Anquan Yang

Wei Li

Jian Zhang

Li Xu

Jianming Wu

Sha Yang

Jianshe Dai

Qingwen Wang

Zilong Gu

Xunlin Xu

Chongquan Wang

Zhoujian Lai

Guangcai Nie

Jing Wang

Lihua Zhang

Jianfen Luo

Min Xie

The present invention provides a data transmission method and system, and a device. The method includes: sending, by a secondary base station, an identifier of a first physical uplink control channel PUCCH code channel resource to a primary base station at a first moment, the primary base station determines to receive, by using the first PUCCH code channel resource, a feedback that is on a first data block; sending, by the secondary base station, the identifier of the first PUCCH code channel resource and the first data block to the UE at a second moment; and receiving, by the secondary base station, the feedback from the primary base station, where the feedback is received by the primary base station from the UE by using the first PUCCH code channel resource.

Method and base station identifying PUCCH for processing feedback of user equipment

The present invention provides a data transmission method, device, and system, which relate to the communications field and can improve data transmission efficiency. The method includes: sending, by a secondary base station, first information to a primary base station, where the first information includes one of the number x of first PUCCH code channel resources, the number x of first data blocks sent by the secondary base station to a user equipment UE, and a first channel code word; sending, by the secondary base station, identifiers of the x first PUCCH code channel resources and the x first data blocks to the UE; and receiving, by the secondary base station, a feedback from the primary base station, where the feedback is received by the primary base station from the UE by using the first PUCCH code channel resource.

Data transmission method, device, and system

The present invention provides a data transmission method, device, and system, and relates to the communications field, which can improve data transmission efficiency. The method includes: determining, by a second base station, that statuses of all HARQ processes in a first hybrid automatic repeat request HARQ buffer are occupied states; and sending, by the second base station, a second data block to a user equipment UE by using an HARQ process in an idle state in a second HARQ buffer, where the first HARQ buffer and the second HARQ buffer are different HARQ buffers disposed in the second base station. The data transmission method, device, and system are applicable to data transmission in carrier aggregation.

Embodiments of the present invention provide a data transmission method, device, and system. A first device is configured to serve a primary carrier, and the first device includes: a first unit configured to process an RLC layer, a second unit configured to process a MAC layer, a third unit configured to process a PDCP layer, and a first scheduling unit. The first unit includes a first control module and a first transition module. The second transition module is configured to: receive the N data packets and scheduling information sent by all scheduling units in the system, acquire, according to all or a part of the received scheduling information and from the N data packets a data packet that needs to be transmitted on the secondary carrier, and send the data packet acquired by the second transition module to the fifth unit.

Embodiments of the present invention provide a cell handover method, a base station and a system, which relate to the field of wireless communications technologies. The method includes: determining, by a source eNB according to uplink RSRP of a UE in a serving cell and a target cell, whether to hand over the UE from the serving cell to the target cell; and if yes, acquiring UE parameters including TA of the UE in the target cell, and sending UE data and the UE parameters to a target eNB, where the TA is used for uplink synchronization between the target eNB and the UE.

Cell handover method, base station and system

Growing community of inventors

Chengdu, China

Anquan Yang