Methods and apparatus for transmission of uplink sounding reference signals in a communication system with large number of antennas
US9167597B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2013 |
| Grant date | Oct 20, 2015 |
| Priority date | — |
| Expiry date | Nov 25, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W56/0045
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods for preventing timing collisions in a wireless communication network include transmitting a data uplink symbol of normal duration via a first base pair using a first timing advance (TA) corresponding to the first base pair. Scheduling to transmit a second uplink symbol via a second base pair (BP) corresponding to the transmit RF chain. Predicting a timing collision will occur based on a different between the first TA and a second TA corresponding to the second BP. Preventing the timing collision by: reducing the duration of the second symbol by an adjustment amount calculated based on the first TA and the second TA; inserting a guard interval to delay transmission of the second symbol by the calculated adjustment amount; and increasing the duration of a cyclic prefix of the second symbol but refraining from transmitting a portion of the enlarged CP.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.