Network Entry and Recovery

• US 20090147877A1
• Filed: 08/29/2008
• Published: 06/11/2009
• Est. Priority Date: 12/11/2007
• Status: Active Grant

• Current Assignee: Monument Bank of Intellectual Property, LLC (Dominion Harbor Enterprises, LLC)
• Original Assignee: Wi-LAN Inc.
• Inventors: Connors, Dennis, Nebat, Yoav, Zehedi, Sina
• Granted Patent: US 8,848,588 B2
• Time in Patent Office: Days
• US Class Current: 375/267
• CPC Class Codes: H03M 13/09 Error detection only, e.g. using cyclic redundancy check [CRC] codes or single parity bit
• CPC Class Codes: H04L 1/0084 Formats for payload data
• CPC Class Codes: H04W 72/30 Resource management for broadcast services

Abstract

The subject matter disclosed herein provides a network entry and recovery mechanism using a map. In one aspect, there is provided a method. The method may insert a plurality of packets into a plurality of data regions. A map may be inserted into one of the data regions. The map may include information to enable decoding of the plurality of data regions, a location of other maps within the plurality of data regions, and a size of the map. The plurality of data regions may be provided to enable the plurality of data regions to be transmitted to one or more client stations. Related systems, apparatus, methods, and/or articles are also described.

Claims

1. A method comprising:

inserting a plurality of packets into a plurality of data regions;

inserting, into one of the data regions of the plurality of data regions, a map, the map including information to enable decoding of another map and decoding another one of the plurality of data regions; and

providing the plurality of data regions to enable the plurality of data regions to be transmitted to one or more client stations.

2. The method of claim 1 further comprising:

inserting a message into at least one of the data regions, the message including pattern information and packet boundary information, the pattern information representative of a pattern used to write a plurality of packets into the at least one data region and the packet boundary information representative of start locations of packets in the at least one data region.

3. The method of claim 1 further comprising:

including in the map information representing a size of the other map included in the other one of the plurality of data regions, wherein the map is associated with a time diversity interval and the other map is associated with a subsequent time diversity interval.

4. The method of claim 3, wherein including further comprises:

using, as the size of the map, a quantity of orthogonal frequency division multiple access (OFDMA) symbols within an OFDMA frame, the size remaining constant within the time diversity interval.

5. The method of claim 1 further comprising:

inserting, into one of the plurality of data regions, a packet in a substream of a stream of packets, the packet including an embedded MAP, the embedded MAP enabling the stream of packets to be decoded in a data region other than the one data region including the packet; and

providing the inserted packet for transmission in the one data region.

6. The method of claim 1 further comprising:

configuring the map so that when the map is received by a client station the client station decodes the plurality of data regions without having to decode a downlink (DL) map transmitted, using non-macrodiversity, in orthogonal frequency division multiple access (OFDMA) frames where the plurality of data regions are located.

7. The method of claim 1, wherein providing further comprises:

providing, for transmission using macrodiversity, one or more of the plurality of data regions within a time diversity interval comprising one or more orthogonal frequency division multiple access (OFDMA) frames.

8. The method of claim 1, wherein each of the plurality of data regions is included in a data frame comprising a plurality of symbols, and wherein a message specifies a starting symbol of the plurality of symbols within each of a subset of the data frames for inserting the map, and wherein the message specifying the subset of symbols is included within the data frame but not within one of the plurality of data regions.

9. The method of claim 1, wherein inserting further comprises:

using, as the information to enable decoding one or more of the following;

timing information describing one or more streams of packets, outer coding information describing a forward-error correction coding used on the packets, and inner coding information describing a modulation and coding scheme used during transmission.

10. The method of claim 1 further comprising:

transmitting, using macrodiversity from a plurality of base stations to one or more client stations, the plurality of data regions including the one data region to enable the client station to decode the plurality of data regions using the map and the other map, and

wherein once the map is decoded by a client station, the client station can decode the plurality of data regions without having to decode, a downlink (DL) map transmitted, using non-macrodiversity, in the orthogonal frequency division multiple access (OFDMA) frames where the plurality of data regions are located.

11. A method comprising:

receiving, at a client station, a plurality of data regions;

receiving a map in one of the data regions, the map including information to enable decoding of another map and decoding another one of the plurality of data regions; and

decoding at least one of the plurality of data regions using at least one of the map or the other map.

12. The method of claim 11 further comprising:

receiving a message included in at least one of the data regions, the message including pattern information and packet boundary information, the pattern information representative of a pattern used to write a plurality of packets into the at least one data region and the packet boundary information representative of start locations of packets in the at least one data region.

13. The method of claim 11 further comprising:

receiving the map including information representing a size of the other map included in the other one of the plurality of data regions, wherein the map is associated with a time diversity interval and the other map is associated with a subsequent time diversity interval.

14. The method of claim 11, wherein receiving the plurality of data regions, further comprises:

receiving the map so that the client station decodes the plurality of data regions without having to decode a downlink (DL) map transmitted, using non-macrodiversity, in orthogonal frequency division multiple access (OFDMA) frames where the plurality of data regions are located.

15. The method of claim 11, wherein each of the plurality of data regions is included in a data frame comprising a plurality of symbols, and wherein a message specifies a starting symbol of the plurality of symbols within each of a subset of the data frames in which the first and second maps are located, and wherein the message specifying the subset of symbols is included within the data frame but not within one of the plurality of data regions.

16. The method of claim 11, wherein receiving the map further comprises:

using, as the information to enable decoding, one or more of the following;

timing information describing one or more streams of packets, outer coding information describing a forward-error correction coding used on the packets included in the plurality of data regions, and inner coding information describing a modulation and coding scheme used during transmission.

17. A method comprising:

inserting a plurality of packets into a plurality of data regions;

inserting, into one of the data regions of the plurality of data regions, a message including a common message and one or more stream messages, the common message associated with the one or more stream messages to enable accessing one of the stream messages by accessing the common message without accessing the other stream messages; and

providing the one data region including the message for transmission to one or more client stations.

18. The method of claim 17 further comprising:

inserting a message into at least one of the data regions, the message including pattern information and packet boundary information, the pattern information representative of a pattern used to write a plurality of packets into the at least one data region and the packet boundary information representative of start locations of packets in the at least one data region.

19. The method of claim 17 further comprising:

including, within the common message, an identifier indicating a zone associated with the common message.

20. The method of claim 17 further comprising:

including, within the common message, one or more of the following;

a size of a map in another data region other than the one data region including the common message;

a numbering system assigning numbers to the symbols of the data regions and assigning widths to the data regions;

available streams in a zone, and one or more pointers to associate the common message to locations of stream messages.