System and Method for a Tracking Channel

Patent metadata

Field	Value
Publication number	US-2016295633-A1
Application number	US-201615009626-A
Country	US
Kind code	A1
Filing date	Jan 28, 2016
Priority date	Apr 1, 2015
Publication date	Oct 6, 2016
Grant date	—

Abstract

A method includes receiving, by a user equipment (UE) from a network node, a UE specific tracking sequence and assigned transmission opportunities and transmitting, by the UE to the network node, the UE specific tracking sequence in accordance with the assigned transmission opportunities.

First claim

What is claimed is:

1 . A method comprising:
receiving, by a user equipment (UE) from a network node, a UE specific tracking sequence and assigned transmission opportunities; and transmitting, by the UE to the network node, the UE specific tracking sequence in accordance with the assigned transmission opportunities.

2 . The method of claim 1 , further comprising receiving, by the UE from the network node, a tracking response after transmitting the tracking sequence.

3 . The method of claim 2 , wherein the tracking response comprises at least one of time advance tuning information, a buffer status report, lean paging, short packet data transmission, and re-authentication information.

4 . The method of claim 1 , wherein the UE specific tracking sequence is not associated with the network node.

5 . The method of claim 1 , wherein transmitting the tracking sequence comprises transmitting the UE specific tracking sequence periodically, on demand, or a combination thereof.

6 . The method of claim 5 , further comprising:
obtaining a characteristic of the UE; and setting a period for transmitting the tracking sequence in accordance with the characteristic of the UE.

7 . The method of claim 6 , wherein the characteristic of the UE is a speed, a data rate, or a subscribe type.

8 . The method of claim 5 , further comprising receiving, by the UE from the network node, a period for transmitting the tracking sequence.

9 . The method of claim 1 , wherein transmitting the tracking sequence comprises transmitting the tracking sequence on demand.

10 . The method of claim 1 , wherein the assigned transmission opportunities comprise time-frequency resources.

11 . The method of claim 1 , wherein the assigned transmission opportunities comprise a period for transmitting the tracking sequence.

12 . The method of claim 1 , wherein receiving the UE specific tracking sequence and assigned transmission opportunities comprises receiving, by the UE from the network node, a UE identifier (ID).

13 . The method of claim 12 , wherein the UE ID comprises at least one of a UE type, a zone, location information, and an identifier.

14 . The method of claim 1 , wherein the UE is associated with a hypercell.

15 . The method of claim 1 , further comprising transmitting, by the UE to the network node, an initial access sequence before receiving the UE specific tracking sequence.

16 . A method comprising:
transmitting, by a first network node to a UE, a UE specific tracking sequence and assigned transmission opportunities; and receiving, by the first network node from the UE, a tracking sequence in accordance with assigned transmission opportunities.

17 . The method of claim 16 , further comprising:
detecting the UE in accordance with the tracking sequence to produce a UE detection status; and transmitting, by the first network node to the UE, a transmission response in accordance with the UE detection status.

18 . The method of claim 17 , wherein the transmission response comprises at least one of a keep alive status of the UE, a buffer status update, and a timing advance update.

19 . The method of claim 18 , wherein the timing advance update is a lean timing advance update.

20 . The method or claim 16 , wherein detecting the UE comprises jointly detecting the UE with a second network node.

21 . The method of claim 16 , wherein transmitting the UE specific tracking sequence and assigned transmission opportunities comprises transmitting a UE ID.

22 . The method of claim 21 , further comprising:
determining a cyclic shift; determining a root; and mapping the cyclic shift and the root to the UE ID.

23 . The method of claim 22 , wherein mapping the cyclic shift and the root to the UE ID comprises performing implicit mapping.

24 . The method of claim 22 , wherein mapping the cyclic shift and the root to the UE ID comprises performing explicit mapping.

25 . The method of claim 21 , wherein the UE ID comprises at least one of a UE type, a zone, location information, and an identifier.

26 . A method comprising:
selecting a tracking sequence for a first user equipment (UE); selecting assigned transmission opportunities for the first UE; and transmitting, by a network node to the first UE, the tracking sequence and the assigned transmission opportunities.

27 . The method of claim 26 , wherein the tracking sequence is not associated with the network node.

28 . The method of claim 26 , wherein the assigned transmission opportunities comprise time-frequency resources.

29 . The method of claim 26 , further comprising:
selecting a UE identifier (ID); and transmitting, by the network node to first the UE, the UE ID.

30 . The method of claim 26 , further comprising selecting the tracking sequence for a second UE, wherein the first UE and the second UE are in a hypercell.

31 . The method of claim 26 , further comprising:
receiving, by the network node from the first UE, a message comprising information about the first UE; and determining a UE group of the first UE in accordance with the information.

32 . The method of claim 31 , wherein selecting the tracking sequence comprises selecting the tracking sequence in accordance with the UE group of the first UE.

33 . A user equipment (UE) comprising:
a processor; and a non-transitory computer readable storage medium storing programming for execution by the processor, the programming including instructions to
receive from a network node, a UE specific tracking sequence and assigned transmission opportunities, and
transmit, to the network node, the UE specific tracking sequence in accordance with the assigned transmission opportunities.

Assignees

• Huawei Tech Co Ltd

Inventors

• Baligh Mohammadhadi
• Ma Jianglei

Classifications

• H04W8/26

  Network addressing or numbering for mobility support · CPC title

• H04W74/08 Primary

  Non-scheduled access, e.g. ALOHA (hybrid access H04W74/02) · CPC title

• H04L5/0091

  Signalling for the administration of the divided path, e.g. signalling of configuration information · CPC title

• H04W76/19

  Connection re-establishment · CPC title

• H04W76/25 Primary

  Maintenance of established connections · CPC title