Fast Recovering for Network Listening Schemes in Synchronization Over Air for Small Cells
US-2015173033-A1 · Jun 18, 2015 · US
Method for providing phase synchronization to non-phase synchronized cellular base stations
US9693326B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9693326-B2 |
| Application number | US-201314436655-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 4, 2013 |
| Priority date | Oct 17, 2012 |
| Publication date | Jun 27, 2017 |
| Grant date | Jun 27, 2017 |
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Abstract
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The method comprising at least one phase synchronized cellular base station having at least one transmit antenna for transmitting a signal to a at least one non-phase synchronized cellular base station, where it comprises transmitting by said at least one transmit antenna of said phased-synchronized cellular base station a beacon signal to said at least one non-phase synchronized cellular base station, included as part of said transmitted signal, said beacon signal comprising two orthogonal length-8 Walsh-Hadamard sequences to be broadcasted by said at least one phase synchronized cellular base station in order to provide said phase synchronization.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for providing phase synchronization to non-phase synchronized cellular base stations, comprising at least one phase synchronized cellular base station having at least one transmit antenna for transmitting a signal to a at least one non-phase synchronized cellular base station, the method comprising: transmitting by said at least one transmit antenna of said phased-synchronized cellular base station a beacon signal to said at least one non-phase synchronized cellular base station, included as part of said transmitted signal, said beacon signal comprising two orthogonal length-8 Walsh-Hadamard sequences to be broadcasted by said at least one phase synchronized cellular base station in order to provide said phase synchronization; and mapping said two orthogonal length-8 Walsh-Hadamard sequences of said beacon signal on unused Resource Elements at the slots symbols where Primary and Secondary Synchronization Signals are transmitted, said unused Resource Elements being reserved for transmission of any other signals thus having no interference from other cells in time-synchronized networks. 2. A method according to claim 1 , characterized in that it comprises transmitting said beacon signal periodically every 10 milliseconds (ms). 3. A method according to claim 2 , characterized in that it comprises mapping said orthogonal length-8 Walsh-Hadamard sequences on said unused Resource Elements for a Type 1 frame structure by using the following expressions: sequence 1 { 1 st half on slot 0 , l = N sym DL - 2 , m = - n - 31 + N RB DL N sc RB 2 2 nd half on slot 0 , l = N sym DL - 1 , m = - n - 31 + N RB DL N sc RB 2 sequence 2 { 1 st half on
Assignees
Inventors
Classifications
Network synchronisation · CPC title
Acquisition of secondary synchronisation channel, e.g. detection of cell-ID group · CPC title
detecting errors in frequency or phase · CPC title
the frequencies being orthogonal, e.g. OFDM(A) or DMT · CPC title
Acquisition of primary synchronisation channel, e.g. detection of cell-ID within cell-ID group · CPC title
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- What does patent US9693326B2 cover?
- The method comprising at least one phase synchronized cellular base station having at least one transmit antenna for transmitting a signal to a at least one non-phase synchronized cellular base station, where it comprises transmitting by said at least one transmit antenna of said phased-synchronized cellular base station a beacon signal to said at least one non-phase synchronized cellular base …
- Who is the assignee on this patent?
- Telefonica Sa
- What technology area does this patent fall under?
- Primary CPC classification H04W56/0015. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 27 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).