IP Library › Granted Patent US 10,812,962
Granted Patent B2
US 10,812,962 · App. 15/985,826 · Granted Oct 20, 2020

Aligning measurement gaps and discovery signals

Inventors: Havish Koorapaty (Saratoga, CA); Tao Cui (Upplands Väsby, SE); Sorour Falahati (Stockholm, SE); Mats Folke (Luleå, SE); Daniel Larsson (Vallentuna, SE); Yu Yang (Solna, SE)
Assignee: Telefonaktiebolaget LM Ericsson (publ)
H04W8/005H04W48/12H04W76/28H04L5/0048H04W48/16H04W88/02H04W88/08
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Quick Facts
Patent No.
US 10,812,962
App. No.
15/985,826
Granted
Oct 20, 2020
Kind
B2
Abstract

According to some embodiments, a method in a network node of a wireless network for aligning discovery reference signal (DRS) occurrences comprises determining a first DRS occurrence configuration that comprises a schedule for transmission of a first series of DRS occurrences. The method further comprises determining a first discovery measurement timing configuration (DMTC) that comprises a schedule for receiving DRS occurrences that is aligned with a first subset of DRS occurrences of the first series of DRS occurrences. The method further comprises determining a second DMTC that comprises a schedule for receiving DRS occurrences that is aligned with a second subset of DRS occurrences of the first series of DRS occurrences, wherein the second subset of DRS occurrences is different than the first subset of DRS occurrences. The method further comprises communicating first DMTC to a first wireless device and the second DMTC in a second wireless device.

Claims (40)

1. A method in a network node of a wireless communication network for aligning discovery reference signal (DRS) occurrences, the method comprising:

determining a first DRS occurrence configuration, the first DRS occurrence configuration comprising a schedule for transmission of a first series of DRS occurrences;

determining a first discontinuous reception (DRX) configuration, the first DRX configuration comprising a schedule of DRX onDuration cycles for a first wireless device;

determining a first discovery measurement timing configuration (DMTC), the first DMTC comprising a schedule for receiving DRS occurrences that is aligned with a first subset of DRS occurrences of the first series of DRS occurrences and an onDuration of the schedule of DRX onDuration cycles for the first wireless device;

communicating the first DMTC to the first wireless device;

wherein:

the first DRX configuration comprises a start time for the DRX cycles; and

the first subset of DRS occurrences of the first series of DRS occurrences is aligned with the start time for the DRX onDuration cycles of the first schedule of DRX onDuration cycles for the first wireless device.

2. The method of claim 1 , comprising:

determining a second DRX configuration, the second DRX configuration comprising a schedule of DRX onDuration cycles for a second wireless device;

determining a second DMTC, the second DMTC comprising a schedule for receiving DRS occurrences that is aligned with a first subset of DRS occurrences of the first series of DRS occurrences and an onDuration of the schedule of DRX onDuration cycles for the second wireless device; and

communicating the second DMTC to the second wireless device.

3. A method in a network node of a wireless communication network for aligning discovery reference signal (DRS) occurrences, the method comprising:

determining a first DRS occurrence configuration, the first DRS occurrence configuration comprising a schedule for transmission of a first series of DRS occurrences;

determining a first discontinuous reception (DRX) configuration, the first DRX configuration comprising a schedule of DRX onDuration cycles for a first wireless device;

determining a first discovery measurement timing configuration (DMTC), the first DMTC comprising a schedule for receiving DRS occurrences that is aligned with a first subset of DRS occurrences of the first series of DRS occurrences and an onDuration of the schedule of DRX onDuration cycles for the first wireless device;

communicating the first DMTC to the first wireless device;

wherein:

the first DRX configuration comprises a start time for the DRX onDuration cycles; and

each of the DRS occurrences of the first subset of DRS occurrences of the first series of DRS occurrences occur prior to the start time of each DRX onDuration cycle of the first schedule of DRX onDuration cycles for the first wireless device.

4. A network node comprising a processor operable to:

determine a first DRS occurrence configuration, the first DRS occurrence configuration comprising a schedule for transmission of a first series of DRS occurrences;

determine a first discontinuous reception (DRX) configuration, the first DRX configuration comprising a schedule of DRX onDuration cycles for a first wireless device;

determine a first discovery measurement timing configuration (DMTC), the first DMTC comprising a schedule for receiving DRS occurrences that is aligned with a first subset of DRS occurrences of the first series of DRS occurrences and an onDuration of the schedule of DRX onDuration cycles for the first wireless device;

communicate the first DMTC to the first wireless device;

wherein:

the first DRX configuration comprises a start time for the DRX cycles; and

the first subset of DRS occurrences of the first series of DRS occurrences is aligned with the start time for the DRX onDuration cycles of the first schedule of DRX onDuration cycles for the first wireless device.

5. The network node of claim 4 , the processor operable to:

determine a second DRX configuration, the second DRX configuration comprising a schedule of DRX onDuration cycles for a second wireless device;

determine a second DMTC, the second DMTC comprising a schedule for receiving DRS occurrences that is aligned with a first subset of DRS occurrences of the first series of DRS occurrences and an onDuration of the schedule of DRX onDuration cycles for the second wireless device; and

communicate the second DMTC to the second wireless device.

6. A network node comprising a processor operable to:

determine a first DRS occurrence configuration, the first DRS occurrence configuration comprising a schedule for transmission of a first series of DRS occurrences;

determine a first discontinuous reception (DRX) configuration, the first DRX configuration comprising a schedule of DRX onDuration cycles for a first wireless device;

determine a first discovery measurement timing configuration (DMTC), the first DMTC comprising a schedule for receiving DRS occurrences that is aligned with a first subset of DRS occurrences of the first series of DRS occurrences and an onDuration of the schedule of DRX onDuration cycles for the first wireless device;

communicate the first DMTC to the first wireless device;

wherein:

the first DRX configuration comprises a start time for the DRX onDuration cycles; and

each of the DRS occurrences of the first subset of DRS occurrences of the first series of DRS occurrences occur prior to the start time of each DRX onDuration cycle of the first schedule of DRX onDuration cycles for the first wireless device.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 22, 2018
From: CUI, TAO; FALAHATI, SOROUR; FOLKE, MATS; KOORAPATY, HAVISH; LARSSON, DANIEL; YANG, YU
To: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
Reel/Frame 045868/0739 →
Continuity (3)
Continuation 14786405
Provisional Application 62034621 · Aug 7, 2014
Related Publication 20180270644A1 · Sep 20, 2018