Huawei patents granted on 27 November 2012

18 US patents granted on 27 November 2012 and assigned to Huawei

1 8,321,738 Method, system and device for retransmitting data
2 8,321,552 Method and device for creating management object instance in management tree of terminal device
3 8,320,835 Method and device for determining channel feedback information in LTE system
4 8,320,568 Method, apparatus and system for key derivation
5 8,320,530 Method, apparatus and system for realizing a multimedia call
6 8,320,526 Method, equipment and digital subscriber line system for spectrum optimization
7 8,320,496 Encoding method and apparatus
8 8,320,412 Method, device and system for managing timestamp
9 8,320,390 Policy decision function addressing method, network element and network system
10 8,320,389 Reliability processing methods and systems in the networking of metro ethernet network providing multi-service
11 8,320,363 Implementation method, system and device of IMS interception
12 8,320,325 Method and apparatus for mapping and detecting control channel
13 8,320,323 Method for allocating time and frequency resource for resource request indicator, method for transmitting resource request indicator and device thereof
14 8,320,275 Channel information feedback method, mobile station, base station, multi-input multi-output system
15 8,320,265 Method and apparatus for obtaining an attenuation factor
16 8,320,234 Method of generating and detecting synchronization signals
17 8,319,580 Attenuator
18 8,319,568 Method of compensating an oscillation frequency and PLL