Capacity increasing devices and methods for wireless communication

• US 9,622,106 B2
• Filed: 02/12/2013
• Issued: 04/11/2017
• Est. Priority Date: 09/12/2007
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Mukund Agarwal, Mungal Singh Dhanda, Simon Walke, Zhi-Zhong Yu
• Inventors: Yu, Zhi-Zhong, Dhanda, Mungal Singh, Walke, Simon, Agarwal, Mukund
• Primary Examiner(s): Pezzlo, John
• Application Number:
  US13/765,622
• Publication Number:
  US 20140056274A1
• Time in Patent Office: 1,519 Days
• Field of Search: 370252, 370442, 370337, 370430, 370478
• CPC Class Codes: H04B 17/318 Received signal strength
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0037 Inter-user or inter-terminal allocation
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/005 of common pilots, i.e. pilots destined for multiple users or terminals
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04W 28/0236 radio quality, e.g. interference, losses or delay
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/542 using measured or perceived quality

Abstract

The present patent application improves DARP by allowing multiple users on one time slot (MUROS). It comprises means and instructions for sharing signals on a single channel, comprising setting up a new connection, allocating a new time slot if there is an unused time slot on a channel frequency, selecting an used time slot for the new connection to share with an existing connection if there is not an unused time slot on the channel frequency, and selecting a different training sequence code for the new connection if the used time slot on the channel frequency has been selected for the new connection to share with an existing connection. Other aspects, embodiments, and features are also claimed and described.

Claims

1. A method to share signals for wireless communication, the method comprising:

setting up a new connection with a new user;

assigning a used time slot and a used channel frequency for said new connection to share with an existing connection of an existing user, wherein said used time slot is assigned based on a distance between said new user and a base station;

assigning a different training sequence for said new connection from said existing connection'"'"'s training sequence; and

using both said training sequences in the used time slot and the used channel frequency.

2. The method according to claim 1, further comprising:

allocating a new time slot if there is an unused time slot on said used channel frequency; and

wherein said used time slot for said new connection to share with an existing connection is allocated if there is not an unused time slot on said used channel frequency.

3. The method according to claim 1, further comprising phase shifting symbols of said new connection with respect to said existing connection.

4. The method according to claim 1, wherein said used time slot is further assigned based on one or more of an amount of traffic associated with said used time slot, a number of users already assigned to said used time slot, and a power level of a user already assigned to said used time slot.

5. The method of claim 1, wherein a communications network component is operable to implement the method for wireless communication.

6. A wireless communication device comprising:

a receiver module configured to receive data from another communication device, the data comprising at least several training sequences; and

a processor configured to compare the at least several training sequences with another training sequence, to select data that is associated with a training sequence that matches the another training sequence, and to reject data associated with a training sequence that does not match the another training sequence,

wherein the communication device is configured to use a same channel and time slot as the another communication device for communication.

7. The wireless communication device of claim 6, further comprising a transmission module configured to transmit training sequence information to a remote communication device, the training sequence information indicating to the remote communication device that the wireless communication device can communicate using new training sequences different from legacy training sequences.

8. The wireless communication device of claim 6, wherein the communication device is configured to request channel access for communication.

9. The wireless communication device of claim 6, wherein the another training sequence is an orthogonal training sequence.