IP Library Granted Patent US 10,638,394
Granted Patent B2
US 10,638,394 · App. 15/698,638 · Granted Apr 28, 2020

Multi-stage handover

Inventors: Lakshmikishore Nittala (Nashua, NH); Hritesh Yadav (Nashua, NH)
Assignee: Parallel Wireless, Inc.
H04W36/30H04W24/10H04W36/0061H04W36/00837H04W36/04H04W36/0058H04W36/08H04W36/32
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Quick Facts
Patent No.
US 10,638,394
App. No.
15/698,638
Granted
Apr 28, 2020
Kind
B2
Abstract

Systems and methods for enabling a handover decision are disclosed. In one embodiment, a method is disclosed comprising configuring a UE with a first offset and a second offset, the second offset greater than the first offset; instructing the UE to enter a handover decision state upon receiving a first measurement report from a UE indicating that a neighbor cell has a better received signal strength than the serving cell by the first offset; instructing the UE to send periodic measurement reports with signal strength of the serving cell and the neighbor cell; delaying handover decision by remaining in the handover decision state until receiving a second measurement report from the UE; and instructing the UE to hand over to the neighbor cell when the neighbor cell has a better received signal strength than the serving cell than the second offset.

Claims (30)

1. A method for enabling a handover decision, comprising:

configuring a UE with a first offset for a first cell and a second offset for the first cell, the second offset greater than the first offset;

instructing the UE to enter a handover decision state upon receiving a first measurement report from a UE indicating that a neighbor cell has a better received signal strength than the serving cell by the first offset;

instructing the UE to send periodic measurement reports with signal strength of the serving cell and the neighbor cell;

delaying handover decision by remaining in the handover decision state until receiving a second measurement report from the UE;

instructing the UE to hand over to the neighbor cell when the neighbor cell has a better received signal strength than the serving cell by the second offset; and

configuring the UE to accelerate handover from a macro cell to a small cell by using a small offset enabling traffic offload, and to reduce handover from a small cell to a macro cell by using a large offset thereby providing improvements in handover performance based in part on cell type.

2. The method of claim 1 , further comprising configuring the UE with a first hysteresis and a second hysteresis.

3. The method of claim 1 , further comprising configuring the UE with a per-cell first offset and a per-cell second offset.

4. The method of claim 1 , further comprising instructing a second UE to exit the handover decision state when the second measurement report indicates that the neighbor cell no longer has a better received signal strength than the serving cell by the first offset.

5. A method for enabling a handover decision, comprising:

configuring a UE with a first offset for a first cell and a second offset for the first cell, the second offset greater than the first offset;

instructing the UE to enter a handover decision state upon receiving a first measurement report from a UE indicating that a neighbor cell has a better received signal strength than the serving cell by the first offset;

instructing the UE to send periodic measurement reports with signal strength of the serving cell and the neighbor cell;

delaying handover decision by remaining in the handover decision state until receiving a second measurement report from the UE;

instructing the UE to exit the handover decision state when the second measurement report indicates that the neighbor cell no longer has a better received signal strength than the serving cell by the first offset; and

configuring the UE to accelerate handover from a macro cell to a small cell by using a small offset enabling traffic offload, and to reduce handover from a small cell to a macro cell by using a large offset thereby providing improvements in handover performance based in part on cell type.

6. The method of claim 5 , further comprising configuring the UE with a first hysteresis and a second hysteresis.

7. The method of claim 5 , further comprising configuring the UE with a per-cell first offset and a per-cell second offset.

8. The method of claim 5 , further comprising instructing a second UE to hand over to the neighbor cell when the neighbor cell has a better received signal strength than the serving cell than the second offset.

9. A non-transitory computer-readable medium having stored therein a set of instructions which, when executed by a computer-based system, cause the computer-based system to:

configure a user equipment (UE) with a first offset for a first cell and a second offset for the first cell, the second offset greater than the first offset;

instruct the UE to enter a handover decision state upon receiving a first measurement report from a UE indicating that a neighbor cell has a better received signal strength than the serving cell by the first offset;

instruct the UE to send periodic measurement reports with signal strength of the serving cell and the neighbor cell;

delay handover decision by remaining in the handover decision state until receiving a second measurement report from the UE; instruct the UE to hand over to the neighbor cell when the neighbor cell has a better received signal strength than the serving cell than the second offset;

instruct the UE to exit the handover decision state when the second measurement report indicates that the neighbor cell no longer has a better received signal strength than the serving cell by the first offset; and

configure the UE to accelerate handover from a macro cell to a small cell by using a small offset enabling traffic offload, and to reduce handover from a small cell to a macro cell by using a large offset thereby providing improvements in handover performance based in part on cell type.

10. The non-transitory computer-readable medium of claim 9 , the instructions further comprising configuring the UE with a first hysteresis and a second hysteresis.

11. The non-transitory computer-readable medium of claim 9 , the instructions further comprising configuring the UE with a per-cell first offset and a per-cell second offset.

12. The non-transitory computer-readable medium of claim 9 , the instructions further comprising instructing a second UE to hand over to the neighbor cell when the neighbor cell has a better received signal strength than the serving cell than the second offset, or to hand over to the neighbor cell when the neighbor cell has a better received signal strength than the serving cell than the second offset.

Assignments (7)
RELEASE OF SECURITY INTEREST Recorded Jul 12, 2022
From: VENTURE LENDING & LEASING IX, INC.; WTI FUND X, INC.
To: PARALLEL WIRELESS, INC.
Reel/Frame 060900/0022 →
RELEASE OF SECURITY INTEREST Recorded Jul 8, 2022
From: VENTURE LENDING & LEASING IX, INC.; VENTURE LENDING & LEASING VIII, INC.
To: PARALLEL WIRELESS, INC.
Reel/Frame 060828/0394 →
RELEASE OF SECURITY INTEREST Recorded Jul 1, 2022
From: VENTURE LENDING & LEASING VII, INC.; VENTURE LENDING & LEASING VIII, INC.
To: PARALLEL WIRELESS, INC.
Reel/Frame 060562/0569 →
SECURITY INTEREST Recorded Mar 1, 2022
From: PARALLEL WIRELESS, INC.
To: VENTURE LENDING & LEASING IX, INC.; WTI FUND X, INC.
Reel/Frame 059279/0851 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 28, 2020
From: NITTALA, LAKSHMIKSHORE; YADAV, HRITESH
To: PARALLEL WIRELESS, INC.
Reel/Frame 051961/0984 →
SECURITY INTEREST Recorded Jan 2, 2020
From: PARALLEL WIRELESS, INC.
To: VENTURE LENDING & LEASING IX, INC.; VENTURE LENDING & LEASING VIII, INC.
Reel/Frame 051459/0959 →
SECURITY INTEREST Recorded Apr 9, 2018
From: PARALLEL WIRELESS, INC.
To: VENTURE LENDING & LEASING VII, INC.; VENTURE LENDING & LEASING VIII, INC.
Reel/Frame 045865/0111 →
Continuity (2)
Provisional Application 62384681 · Sep 7, 2016
Related Publication 20180070280A1 · Mar 8, 2018