Multicarrier OFDM Transmission

• US 20140029517A1
• Filed: 10/01/2013
• Published: 01/30/2014
• Est. Priority Date: 06/04/2011
• Status: Abandoned Application

• Current Assignee: Ofinno Technologies, LLC (Ofinno, LLC)
• Original Assignee: Ofinno Technologies, LLC (Ofinno, LLC)
• Inventors: Dinan, Esmael Hejazi
• Application Number:
  US14/042,830
• Publication Number:
  US 20140029517A1
• Time in Patent Office: Days
• US Class Current: 370/328
• CPC Class Codes: H04L 27/2643 using symbol repetition, e.g. time domain realization of distributed FDMA
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/003 Arrangements for allocating sub-channels of the transmission path
• CPC Class Codes: H04L 5/0042 intra-user or intra-terminal allocation
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers
• CPC Class Codes: H04W 12/04 Key management, e.g. using generic bootstrapping architecture [GBA]
• CPC Class Codes: H04W 28/0257 the individual bearer or channel having a maximum bit rate or a bit rate guarantee
• CPC Class Codes: H04W 28/0263 involving mapping traffic to individual bearers or channels, e.g. traffic flow template [TFT]
• CPC Class Codes: H04W 28/0268 using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR] negotiating SLA or negotiating QoS H04W28/24

Abstract

A base station transmits a first message comprising a field describing content over a first plurality of subcarriers. The base station receives a second message requesting for the content. The base station transmits a first plurality of content packets to the wireless device over a second plurality of subcarriers of a first carrier. The first plurality of packets comprises a first portion of the content. The base station transmits a second plurality of packets to the wireless device over the first carrier and at least one additional carrier over a third plurality of subcarriers.

Claims

1. A method for use by a base station, the method comprising:

transmitting to a wireless device a first message comprising a content descriptor originated from an application server over a first plurality of subcarriers of a first carrier in a plurality of configured carriers, said content descriptor describing content residing on a content server in a communication network, wherein there is no guard band between any two subcarriers in said first plurality of subcarriers;

receiving from said wireless device a second message destined for said application server, said second message requesting said content;

transmitting a first plurality of content packets to said wireless device over a second plurality of subcarriers of said first carrier, wherein there is no guard band between any two subcarriers in said second plurality of subcarriers, said first plurality of content packets comprising a first portion of said content originating from said content server; and

transmitting an activation command originating from said base station, said activation command configured to cause the activation of at least one additional carrier in said plurality of configured carriers in said wireless device; and

transmitting a second plurality of content packets to said wireless device over a third plurality of subcarriers of said first carrier and at least one of said at least one additional carrier, wherein there is at least one guard band between at least two subcarriers in said third plurality of subcarriers, said second plurality of content packets comprising a second portion of said content.

2. The method of claim 1, wherein:

said second message is received over a fourth plurality of subcarriers, there is no guard band between any two subcarriers in said fourth plurality of subcarriers; and

said activation command is transmitted over a fifth plurality of subcarriers of said first carrier, where there is no guard band between any two subcarriers in said fifth plurality of subcarriers.

3. The method of claim 1, wherein:

said first portion of said content is transmitted in a first time period;

said second portion of said content is transmitted in a second time period;

said first time period and said second time period do not overlap; and

said first time period is before said second time period.

4. The method of claim 1, wherein packets in said first plurality of content packets and said second plurality of content packets are encrypted packets.

5. The method of claim 1, wherein said first plurality of content packets and said second plurality of content packets are encrypted using an encryption key and at least one parameter configured to change based on a system counter.

6. The method of claim 1, wherein said activation command is transmitted to said wireless device without encryption.

7. The method of claim 1, wherein said first plurality of subcarriers, said second plurality of subcarriers and said third plurality of subcarriers are a plurality of OFDM subcarriers.

8. The method of claim 1, further comprising changing the activation state associated with one of said at least one additional carrier of said wireless device, if a timer associated with said one of said at least one additional carrier expires after a last content packet queued for transmission over said one of said at least one additional carrier is transmitted.

9. The method of claim 1, wherein said first message, said second message, said first portion of said content, and said second portion of said content are transmitted over the same radio bearer.

10. The method of claim 1, wherein said second plurality of content packets consists of a first subset of content packets and a second subset of content packets, said first subset of content packets transmitted over said first carrier and said second subset of content packets transmitted over said at least one additional carrier.

11. The method of claim 1, further comprising transmitting, by said base station, a scheduling control packet for each content packet in said first plurality of content packets and said second plurality of content packets is transmitted, said scheduling control packet comprising information about subcarriers used for content packet transmission.

12. A method for use by a wireless device, the method comprising:

receiving, from a network application server via a base station, a first message comprising a content descriptor over a first plurality of subcarriers of a first carrier in a plurality of configured carriers, said content descriptor describing content residing on a content server in a communication network, wherein there is no guard band between any two subcarriers in said first plurality of subcarriers;

transmitting a second message to said network application server via said base station, said second message requesting said content;

receiving a first plurality of content packets from said server via said base station over a second plurality of subcarriers of said first carrier, wherein there is no guard band between any two subcarriers in said second plurality of subcarriers, said first plurality of content packets comprising a first portion of said content originating from said content server;

receiving an activation command originating from said base station, at least one additional carrier in said plurality of configured carriers being activated in said wireless device in response to receiving said activation command; and

receiving a second plurality of content packets from said content server via said base station over a third plurality of subcarriers of said first carrier and at least one of said at least one additional carrier, wherein there is at least one guard band between at least two subcarriers in said third plurality of subcarriers, said second plurality of content packets comprising a second portion of said content.

13. The method of claim 12, wherein said first portion of said content is received before said second portion of said content.

14. The method of claim 12, wherein said first message, said second message, said first portion of said content, and said second portion of said content are received over the same radio bearer.

15. The method of claim 12, wherein said first plurality of subcarriers, said second plurality of subcarriers and said third plurality of subcarriers are a plurality of OFDM subcarriers.

16. The method of claim 12, further comprising deactivating one of said at least one additional carrier if a timer associated with said one of said at least one additional carrier expires after a last content packet queued for transmission by said base station over said one of said at least one additional carrier is received by said wireless device.

17. A wireless device comprising:

one or more communication interfaces;

one or more processors; and

memory storing instructions that, when executed, cause said wireless device to;

receive a first message comprising a content descriptor from a network application server via a base station over a first plurality of subcarriers of a first carrier in a plurality of configured carriers, said content descriptor describing content residing on a content server in a communication network, wherein there is no guard band between any two subcarriers in said first plurality of subcarriers;

transmit a second message to said network application server via a base station, said second message requesting said content;

receive a first plurality of content packets via said base station over a second plurality of subcarriers of said first carrier, wherein there is no guard band between any two subcarriers in said second plurality of subcarriers, said first plurality of content packets comprising a first portion of said content originating from said content server;

receive an activation command originating from said base station, at least one additional carrier in said plurality of configured carriers being activated in said wireless device in response to receiving said activation command; and

receive a second plurality of content packets from said content server via said base station over a third plurality of subcarriers of said first carrier and at least one of said at least one additional carrier, wherein there is at least one guard band between at least two subcarriers in said third plurality of subcarriers, said second plurality of content packets comprising a second portion of said content.

18. The wireless device of claim 17, wherein said instructions, when executed, further cause said wireless device to receive said first portion of said content in a first time period and said second portion of said content in a second time period, wherein:

said first time period and said second time period do not overlap; and

said first time period is before said second time period.

19. The wireless device of claim 17, wherein said instructions, when executed, further cause said wireless device to receive a scheduling control packet for each packet in said first plurality of packets and said second plurality of packets is received, said scheduling control packet comprising information about the subcarriers used for packet reception.

20. The wireless device of claim 17, wherein said instructions, when executed, further cause said wireless device to decrypt said first plurality of packets and said second plurality of packets using an encryption key and at least one parameter that changes based on a system counter.