UL/DL scheduling for full bandwidth utilization

• US 9,306,715 B2
• Filed: 09/23/2013
• Issued: 04/05/2016
• Est. Priority Date: 04/30/2008
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Axelsson, Hkan, Ahl, Johnny, Schliwa-Bertling, Paul
• Primary Examiner(s): Khajuria, Shripal
• Assistant Examiner(s): Choudhury, Faisal
• Application Number:
  US14/033,786
• Publication Number:
  US 20140023056A1
• Time in Patent Office: 925 Days
• Field of Search: 370/336
• US Class Current: 1/1
• CPC Class Codes: H04L 5/0037 Inter-user or inter-terminal allocation
• CPC Class Codes: H04W 72/1268 of uplink data flows
• CPC Class Codes: H04W 72/569 of the traffic information

Abstract

A method may include receiving, by a user equipment incapable of transmitting and receiving simultaneously, a schedule to transmit data on an uplink, detecting, by the user equipment, whether there is data to be transmitted on the uplink, and receiving, by the user equipment, during a time corresponding to the schedule, data associated with a downlink, when it is determined that there is no data to be transmitted.

Claims

1. A method by a user equipment, the method comprising:

prioritizing a transmission of data on uplink during a timeslot over receiving of data on downlink during the timeslot when there is data to be transmitted on the uplink, while the user equipment is incapable of simultaneously receiving on the downlink and transmitting on the uplink,

selecting a time within an uplink schedule to begin the transmission of the data on the uplink so that a remaining time within the uplink schedule for receiving data associated with the downlink is maximized,

transmitting data on the uplink based on the time selected within the uplink schedule, wherein the data to be transmitted is an amount that is smaller than an amount that can be transmitted in an available bandwidth associated with the uplink schedule, and

receiving data on the downlink during the remaining time within the uplink schedule following the transmission of the data.

2. The method of claim 1, further comprising selecting the time within the uplink schedule to begin the transmission of the data on the uplink to minimize loss of other time within the uplink schedule for receiving of data on the downlink.

3. The method of claim 1, wherein the user equipment completes transmission of the data on the uplink before beginning receiving of data associated with the downlink.

4. The method of claim 1, wherein the prioritizing and the selecting are performed by the user equipment in response to determining that a transmit buffer has a packet for uplink transmission.

5. The method of claim 4, wherein the prioritizing and the selecting are performed by the user equipment further based on determining that a multislot class of the user equipment indicates that the user equipment is incapable of simultaneously receiving on the downlink and transmitting on the uplink.

6. The method of claim 1, further comprising:

transmitting the data on the uplink based on the time selected within the uplink schedule.

7. The method of claim 6, wherein the transmitting is according to a Global Systems for Mobile communications/EDGE Radio Access Network (GERAN) specification.

8. The method of claim 1, wherein selecting a time within an uplink schedule to begin the transmission of the data on the uplink so that a remaining time within the uplink schedule for receiving data associated with the downlink is maximized, comprises:

selecting within the uplink schedule a sequence of timeslots from a latest timeslot within an uplink transmission timeslot group toward an earliest timeslot within the uplink transmission timeslot group to use for transmission of the data.

9. The method of claim 1, wherein selecting a time within an uplink schedule to begin the transmission of the data on the uplink so that a remaining time within the uplink schedule for receiving data associated with the downlink is maximized, comprises:

selecting within the uplink schedule a sequence of timeslots from an earliest timeslot within an uplink transmission timeslot group toward a latest timeslot within the uplink transmission timeslot group to use for transmission of the data.

10. A user equipment comprising:

a memory storing instructions;

at least one processor configured to execute the instructions in the memory to cause the at least processor to perform operations to;

prioritize a transmission of data on uplink during a timeslot over receiving of data on downlink during the timeslot when there is data to be transmitted on the uplink, while the user equipment is incapable of simultaneously receiving on the downlink and transmitting on the uplink,

select a time within an uplink schedule to begin the transmission of the data on the uplink so that a remaining time within the uplink schedule for receiving data associated with the downlink is maximized,

transmit data on the uplink based on the time selected within the uplink schedule, wherein the data to be transmitted is an amount that is smaller than an amount that can be transmitted in an available bandwidth associated with the uplink schedule, and

receive data on the downlink during the remaining time within the uplink schedule following the transmission of the data.

11. The user equipment of claim 10, wherein the at least one processor is further configured to select the time within the uplink schedule to begin the transmission of the data on the uplink to minimize loss of other time within the uplink schedule for receiving of data on the downlink.

12. The user equipment of claim 10, wherein the at least one processor is further configured to complete transmission of the data on the uplink before beginning receiving of data associated with the downlink.

13. The user equipment of claim 10, wherein the at least one processor is configured to perform the prioritizing and selecting in response to determining that a transmit buffer has a packet for uplink transmission.

14. The user equipment of claim 13, wherein the at least one processor is configured to perform the prioritizing and selecting further based on determining that a multislot class of the user equipment indicates that the user equipment is incapable of simultaneously receiving on the downlink and transmitting on the uplink.

15. The user equipment of claim 10, further comprising a transceiver configured to transmit on the uplink to a network node and receive on the downlink from the network node,

wherein the at least one processor is further configured to transmit the data through the transceiver on the uplink based on the time selected within the uplink schedule.

16. The user equipment of claim 15, wherein:

the transceiver and the at least one processor are configured to communicate with the network node operating compatible with a Global Systems for Mobile communications/EDGE Radio Access Network (GERAN) specification.

17. The user equipment of claim 10, wherein the at least one processor is further configured to select within the uplink schedule a sequence of timeslots from a latest timeslot within an uplink transmission timeslot group toward an earliest timeslot within the uplink transmission timeslot group to use for transmission of the data.

18. The user equipment of claim 10, wherein the at least one processor is further configured to select within the uplink schedule a sequence of timeslots from an earliest timeslot within an uplink transmission timeslot group toward a latest timeslot within the uplink transmission timeslot group to use for transmission of the data.