Apparatus, methods, and computer program products providing an indication of cyclic prefix length

Patent metadata

Field	Value
Publication number	US-9419836-B2
Application number	US-38674309-A
Country	US
Kind code	B2
Filing date	Apr 21, 2009
Priority date	Apr 25, 2008
Publication date	Aug 16, 2016
Grant date	Aug 16, 2016

Abstract

In one exemplary embodiment, a method includes: inserting an indication of a cyclic prefix length into a transmission; and sending the transmission. In another exemplary embodiment, a method includes: receiving a transmission; and processing the received transmission to obtain an indication of a cyclic prefix length.

First claim

What is claimed is:

1. A method for an evolved universal terrestrial radio access network comprising:
inserting an indication of a type of cyclic prefix length into a transmission comprising a downlink reference signal, wherein the type of cyclic prefix length is one of normal cyclic prefix length and extended cyclic prefix length; and
using one type of cyclic prefix length in sending the transmission;
wherein the type of cyclic prefix length is the used one type of cyclic prefix length; and
wherein inserting the indication comprises using at least one field indicative of the type of cyclic prefix length in initialization of a scrambling sequence, and using the obtained scrambling sequence in generating the downlink reference signal.

2. A non-transitory computer-readable medium storing program instructions, execution of the program instructions by a processor resulting in the steps of performing the method of claim 1 .

3. An apparatus comprising:
a processor; and
a memory including computer program instructions, the memory and the computer program instructions being configured, with the processor, to cause the apparatus at least to perform:
insert an indication of a type of cyclic prefix length into a transmission comprising a downlink reference signal, wherein the type of cyclic prefix length is one of normal cyclic prefix length and extended cyclic prefix length; and
send the transmission using one type of cyclic prefix length within an evolved universal radio access network,
wherein inserting the indication comprises using at least one field indicative of the type of cyclic prefix length in initialization of a scrambling sequence, and using the obtained scrambling sequence in generating the downlink reference signal; and
wherein the used one type of cyclic prefix length is the type of cyclic prefix length.

4. The apparatus of claim 3 , wherein the apparatus comprises a network node, an access node, a relay node, a base station or an eNode B.

5. A method for an evolved universal terrestrial radio access network comprising:
receiving a transmission comprising a downlink reference signal, wherein one type of cyclic prefix length is used in the transmission; and
processing the received transmission,
wherein processing the received transmission comprises determining an indication of a type of cyclic prefix length from the downlink reference signal,
wherein the type of cyclic prefix length is one of normal cyclic prefix length and extended cyclic prefix length,
wherein the indication comprises using at least one field indicative of the type of cyclic prefix length in initialization of a scrambling sequence, and using the obtained scrambling sequence in generating the downlink reference signal, and
wherein the used one type of cyclic prefix length is the type of cyclic prefix length.

6. A non-transitory computer-readable medium storing program instructions, execution of the program instructions by a processor resulting in the steps of performing the method of claim 5 .

7. An apparatus comprising:
a processor; and
a memory including computer program instructions, the memory and the computer program instructions being configured, with the processor, to cause the apparatus at least to perform:
receive a transmission comprising a downlink reference signal, wherein one type of cyclic prefix length is used in the transmission; and
determine an indication of a type of cyclic prefix length from the downlink reference signal,
wherein the type of cyclic prefix length is one of normal cyclic prefix length and extended cyclic prefix length,
wherein the indication comprises using at least one field indicative of the type of cyclic prefix length in initializing a scrambling sequence, and using the obtained scrambling sequence in generating the downlink reference signal, and
wherein the used one type of cyclic prefix length is the type of cyclic prefix length.

8. The apparatus of claim 7 , wherein the apparatus comprises a mobile station or a mobile phone.

9. The method of claim 1 , wherein the at least one field indicative of the type of cyclic prefix length is used in an initialization value of a scrambling sequence generator in generating the scrambling sequence.

10. The apparatus of claim 3 , wherein the at least one field indicative of the type of cyclic prefix length is used in an initialization value of a scrambling sequence generator in generating the scrambling sequence.

11. The method of claim 5 , wherein the at least one field indicative of the type of cyclic prefix length is used in an initialization value of a scrambling sequence generator in generating the scrambling sequence.

12. The apparatus of claim 7 , wherein the at least one field indicative of the type of cyclic prefix length is used in an initialization value of a scrambling sequence generator in generating the scrambling sequence.

13. The method of claim 9 , wherein the scrambling sequence generator is a Gold sequence generator.

14. The apparatus of claim 10 , wherein the scrambling sequence generator is a Gold sequence generator.

15. The method of claim 11 , wherein the scrambling sequence generator is a Gold sequence generator.

16. The apparatus of claim 12 , wherein the scrambling sequence generator is a Gold sequence generator.

Assignees

• Chmiel Mieszko
• Czerepinski Przemyslaw Jan
• Jansen Kaj
• Nokia Solutions & Networks Oy

Inventors

• Chmiel Mieszko
• Czerepinski Przemyslaw Jan
• Jansen Kaj

Classifications

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W84/045

  using private Base Stations, e.g. femto Base Stations, home Node B · CPC title

• H04J2203/0089

  Multiplexing, e.g. coding, scrambling, SONET · CPC title

• H04L27/2607 Primary

  Cyclic extensions · CPC title

• H04J11/0093 Primary

  Neighbour cell search · CPC title