RLC status reporting for eight-carrier HSDPA

Patent metadata

Field	Value
Publication number	US-10462690-B2
Application number	US-201113283246-A
Country	US
Kind code	B2
Filing date	Oct 27, 2011
Priority date	Aug 5, 2011
Publication date	Oct 29, 2019
Grant date	Oct 29, 2019

Abstract

Techniques for signaling radio link control (RLC) status reports to a wireless network, such as a network supporting multi-carrier High-Speed Downlink Packet Access (HSDPA). An example method performed in a mobile terminal comprises calculating a throughput estimate data transmissions to the mobile terminal, determining a rate at which to send radio link control status reports, based on the throughput estimate, and sending radio link control status reports to the wireless network node at the determined rate. In some embodiments, the mobile terminal determines the rate at which to send radio link control status reports by comparing the throughput estimate to a threshold value and selecting the rate based on the comparison. The threshold value may be received from the wireless network node prior to the comparison.

First claim

What is claimed is:

1. A method performed in a mobile terminal for signaling radio link control status reports to a wireless network node, the method comprising:
calculating a throughput estimate for data transmissions to the mobile terminal;
receiving a threshold value from the wireless network node;
determining, based on the throughput estimate, a single rate at which radio link control status reports are to be sent from the mobile terminal,
wherein the single rate indicates a time between radio link control status reports or a frequency of reporting the radio link control status reports;
wherein the determining the single rate comprises selecting the single rate by selecting one of a plurality of values for a prohibit timer, the plurality of values comprising a first value for selection when the throughput estimate is above the threshold value and a second value, different from the first value, for selection when the throughput estimate is below the threshold value; and
wherein the prohibit timer prohibits sending of all radio link control status reports for a certain amount of time; and

sending a plurality of radio link control status reports to the wireless network node at the determined single rate, wherein one or more of the plurality of radio link control status reports report at least one data transmission to the mobile terminal was defective, and one or more of the plurality of radio link control status reports report at least one data transmission to the mobile terminal was successfully received by the mobile terminal.

2. The method of claim 1 , further comprising receiving at least two timer-status-prohibit values from the wireless network node prior to said selecting, wherein the at least two timer-status-prohibit values comprise the first value and the second value.

3. The method of claim 1 , wherein the threshold value is a TSP_Change_Threshold received from a High-Speed Downlink Packet Access (HSDPA) Node B.

4. The method of claim 1 , wherein determining the single rate at which to send radio link control status reports comprises calculating a third value of the plurality of values as a function of the estimated throughput and at least the first value or the second value.

5. The method of claim 4 , wherein determining the single rate comprises selecting the third value for the prohibit timer based on varying the rate linearly between the first value and the second value as a function of the estimated throughput, the first value and the second value.

6. The method of claim 5 , wherein determining the single rate comprises selecting a third value for the prohibit timer based on varying the rate linearly between the first value and the second value, as a function of the estimated throughput, the first value, the second value, and at least two different reference throughput rates statistically configured by the mobile terminal.

7. The method of claim 5 , wherein determining the single rate comprises selecting a third value for the prohibit timer based on varying the rate linearly between the first value and the second value, as a function of the estimated throughput, the first value, the second value, and at least two different reference throughput rates signaled to the mobile terminal.

8. The method of claim 4 , wherein the calculating the third value is selectively performed by the mobile terminal responsive to a configuration from the wireless network node.

9. The method of claim 5 , further comprising receiving the first value and the second value from the wireless network node prior to said calculating.

10. The method of claim 1 , wherein calculating a throughput estimate comprises calculating an actual radio link control throughput based on data sent to the mobile terminal.

11. The method of claim 1 , wherein calculating a throughput estimate comprises estimating a radio link control throughput based on one or more transport block sizes for data sent to the mobile terminal.

12. The method of claim 1 , wherein data transmission from the wireless node to the mobile terminal comprise a plurality of data packets, and one or more of the radio link control status reports comprise status information about all data packets received since the sending of the last status report.

13. The method of claim 1 ,
wherein a first one of the plurality of radio link control status reports reports for the first time at least one data transmission to the mobile terminal was defective;
wherein a second and immediately subsequent one of the plurality of reports reports for the first time at least a second data transmission to the mobile terminal was defective; and
wherein the data of the first and second data transmissions are different.

14. A method performed in a wireless network node for controlling the transmission of radio link control status reports from one or more mobile terminals, the method comprising:
signaling a throughput threshold value to one or more mobile terminals; and
receiving radio link control status reports from the one or more mobile terminals at respective different rates, depending on respective downlink data throughput estimates for the one or more mobile terminals;
wherein a rate at which radio link control status reports are received from a given one of the mobile terminals comprises a single rate at which radio link control status reports are sent from the given mobile terminal;
wherein the single rate indicates a time between radio link control status reports or a frequency of reporting the radio link control status reports, and wherein the single rate is defined by a value selected for a prohibit timer, selected by the given one of the one or more mobile terminals, from a plurality of values, wherein the prohibit timer prohibits sending of all radio link control status reports for a certain amount of time;
wherein the plurality of values comprise a first value for selection when a respective downlink data throughput estimate for the given one of the one or more mobile terminals is above the throughput threshold value and a second value, different from the first value, for selection when a respective downlink data throughput estimate for the given one of the one or more mobile terminals is below the throughput threshold value; and
wherein one or more of the radio link control status reports received at the single rate from the given one of the mobile terminals report at least one data transmission to the given one of the mobile terminals was defective, and one or more of the radio link control status reports received at the single rate from the given one of the mobile terminals report at least one data transmission to the given one of the mobile terminals was successfully received by that mobile terminal.

15. The method of claim 14 , further comprising signaling at least one timer-status-prohibit value to the one or more mobile terminals, for use in determining status reporting rates.

16. The method of claim 15 , wherein signaling at least one timer-status-prohibit value comprises signaling the first value and the second value, and wherein each of the respective different rates corresponds to one or the other of the first value and the second value.

17. The method of claim 15 , wherein signaling at least one timer-status-prohibit value comprises signaling the first value and the second value, and wherein each of the respective different rates corresponds to different values in a range between the first value and the second value.

18. The method of claim 14 , wherein the method further comprises configuring the given one of the

Assignees

• Jonsson Anders
• Lidian Namir
• Ericsson Telefon Ab L M

Inventors

• Jonsson Anders
• Lidian Namir

Classifications

• H04L1/1854

  Scheduling and prioritising arrangements · CPC title

• H04W24/10 Primary

  Scheduling measurement reports {; Arrangements for measurement reports} · CPC title

• H04L1/1848

  Time-out mechanisms · CPC title

• H04W28/0205

  at the air interface (dynamic wireless traffic scheduling H04W72/12) · CPC title

• H04L1/1825

  Adaptation of specific ARQ protocol parameters according to transmission conditions · CPC title