Auxiliary sync signal for sync channel
A technology for auxiliary synchronization signals and synchronization channels, which is applied in the direction of synchronization devices, multiplexing communication, wireless communication, etc., and can solve problems such as performance degradation, false detection of synchronization channels, false detection, etc.
Active Publication Date: 2020-08-07
QUALCOMM INC
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- Application Information
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Problems solved by technology
However, a wireless device attempting to detect a sync channel may misdetect a sync channel, for example, when overlapping sync channel transmissions are received from neighboring wireless devices
For example, two adjacent base stations may transmit overlapping synchronization channels which, when received by the UE, cause misdetection of all or part of the synchronization channels by the UE
Misdetection of all or part of the synchronization channel may lead to performance degradation due to e.g. synchronization delay
Method used
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[0024] Aspects of the disclosure were initially described in the context of wireless communication systems. Subsequently, a specific example is described for an auxiliary synchronization signal for a synchronization channel in a Cellular Internet of Things (CIoT) system. These and other aspects of the present disclosure are further illustrated and described with reference to apparatus diagrams, system diagrams, and flow diagrams to which they relate.
[0025] figure 1 According to various aspects of the present disclosure, an example of a wireless communication system 100 is shown. The wireless communication system 100 includes a base station 105 , a user equipment (UE) 115 and a core network 130 . In some examples, wireless communication system 100 may be a Long Term Evolution (LTE) / LTE-Advanced (LTE-A) network.
[0026] Base station 105 may communicate wirelessly with UE 115 via one or more base station antennas. Each base station 105 may provide communication coverage f...
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Methods, systems and devices for wireless communications are described. The method may include, at the wireless device, determining a logical identifier (ID) that is a pseudorandom function of the wireless device's physical device ID and a synchronization channel index, where the synchronization channel index corresponds to a periodically repeated synchronization in a wireless frame. instance of the channel. The wireless device may be a base station in a serving cell such that the synchronization channel may synchronize downlink for communication with user equipment (UE) operating in narrowband cellular Internet of Things. Additionally, the method can include: generating a secondary synchronization signal (SSS) for each instance of the regularly repeating synchronization channel in the frame based at least in part on the logical ID and the corresponding synchronization channel index; and transmitting from the wireless device the frame.
Description
[0001] cross reference [0002] This patent application claims the benefit of U.S. Provisional Patent Application No. 62 / 181,757, filed June 18, 2015, by Abedini et al., entitled "Secondary Synchronization Signals for a Synchronization Channel," and Abedini et al., filed October 21, 2015 Priority to U.S. Patent Application No. 14 / 918,748, entitled "Secondary Synchronization Signals for a Synchronization Channel," each of which has been assigned to the assignee of the present application. technical field [0003] In general, the following description relates to wireless communications, and in particular, the following description relates to generating auxiliary synchronization signals for synchronization channels in a Cellular Internet of Things (CIoT) system. Background technique [0004] Wireless communication systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may b...
Claims
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IPC IPC(8): H04W56/00
CPCH04W56/001H04J13/0062H04J11/0076H04J11/0073H04L67/12H04J2011/0096H04J11/0069
Inventor N·阿贝迪尼厉隽怿
Owner QUALCOMM INC