Search

EP-4162755-B1 - PACKET JITTER AND LATENCY MITIGATION

EP4162755B1EP 4162755 B1EP4162755 B1EP 4162755B1EP-4162755-B1

Inventors

  • PARK, CHEOL HEE
  • GUO, Hongjin
  • HAO, ZENGYU
  • HOU, Jintao
  • BABU REDDY, Rejus
  • RONGALA, SANTOSH KUMAR
  • XIAO, GANG ANDY

Dates

Publication Date
20260513
Application Date
20200603

Claims (7)

  1. A method of wireless communication performed by a transmitter device (110, 120), comprising: determining (410) that a criterion relating to semi-persistent scheduling, SPS, is satisfied, wherein the criterion relates to packet arrival times for SPS transmission, wherein a sidelink synchronization signal, SLSS, is configured and wherein the criterion is a threshold quantity of accumulated SLSS subframes satisfying a first threshold value and an SPS transmission latency satisfying a second threshold value; and triggering (420) an SPS resource reselection based at least in part on determining that the criterion is satisfied.
  2. The method of claim 1, further comprising: identifying a jitter spread for the packet arrival times; and wherein triggering the SPS resource reselection comprises: reselecting SPS resources to one or more resources determined based at least in part on a size of the jitter spread.
  3. The method of claim 2, wherein the one or more resources are selected based at least in part on a channel busy ratio value.
  4. The method of claim 2, wherein the one or more resources are selected based at least in part on a percentile of the jitter spread.
  5. A computer program comprising instructions which, when the program is executed by a computer, cause the computer to carry out the steps of a method according to any of claims 1 to 4.
  6. An apparatus for wireless communication, comprising: means for determining that a criterion relating to semi-persistent scheduling, SPS, is satisfied, wherein the criterion relates to packet arrival times for SPS transmission, wherein a sidelink synchronization signal, SLSS, is configured and wherein the criterion is a threshold quantity of accumulated SLSS subframes satisfying a first threshold value and an SPS transmission latency satisfying a second threshold value; and means for triggering an SPS resource reselection based at least in part on determining that the criterion is satisfied.
  7. The apparatus of claim 6, further comprising: means for identifying a jitter spread for the packet arrival times; and wherein the means for triggering the SPS resource reselection comprises: means for reselecting SPS resources to one or more resources determined based at least in part on a size of the jitter spread.

Description

FIELD OF THE DISCLOSURE Aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for packet jitter and latency mitigation. BACKGROUND Wireless communication systems, as are for example described in WO 2019/187562 A1, are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, and/or the like). Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency-division multiple access (FDMA) systems, orthogonal frequency-division multiple access (OFDMA) systems, single-carrier frequency-division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE/LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP). A wireless network may include a number of base stations (BSs) that can support communication for a number of user equipment (UEs). A user equipment (UE) may communicate with a base station (BS) via the downlink and uplink. The downlink (or forward link) refers to the communication link from the BS to the UE, and the uplink (or reverse link) refers to the communication link from the UE to the BS. As will be described in more detail herein, a BS may be referred to as a Node B, a gNB, an access point (AP), a radio head, a transmit receive point (TRP), a New Radio (NR) BS, a 5G Node B, and/or the like. The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user equipment to communicate on a municipal, national, regional, and even global level. New Radio (NR), which may also be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP). NR is designed to better support mobile broadband Internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink (DL), using CP-OFDM and/or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL), as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. As the demand for mobile broadband access continues to increase, further improvements in LTE, NR, and other radio access technologies remain useful. SUMMARY The invention is defined by the independent claims. Preferred embodiments are set out in the dependent claims. BRIEF DESCRIPTION OF THE DRAWINGS So that the above-recited features of the present disclosure can be understood in detail, a more particular description, briefly summarized above, may be had by reference to aspects, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only certain typical aspects of this disclosure and are therefore not to be considered limiting of its scope, for the description may admit to other equally effective aspects. The same reference numbers in different drawings may identify the same or similar elements. Fig. 1 is a diagram illustrating an example of a wireless network, in accordance with various aspects of the present disclosure.Fig. 2 is a diagram illustrating an example of a base station in communication with a UE in a wireless network, in accordance with various aspects of the present disclosure.Figs. 3A-3F are diagrams illustrating examples associated with packet jitter and latency mitigation, in accordance with various aspects of the present disclosure.Fig. 4 is a diagram illustrating an example process associated with packet jitter and latency mitigation, in accordance with various aspects of the present disclosure.Fig. 5 is a block diagram of an example apparatus for wireless communication, in accordance with various aspects of the present disclosure. DETAILED DESCRIPTION Various aspects of the disclosure are described more fully hereinafter with reference to the accompanying drawings. This disclosure may, however, be embodied in many different forms and should not be construed as limited to any specific structure or function presented throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Based on the teachings herein, one skilled in the ar