Radio link reporting using multiple symbol sequences

Patent metadata

Field	Value
Publication number	US-2017366992-A1
Application number	US-201615128261-A
Country	US
Kind code	A1
Filing date	Jun 15, 2016
Priority date	Jun 15, 2016
Publication date	Dec 21, 2017
Grant date	—

Abstract

The present disclosure relates to radio link reporting in mobile communications. More specifically, the proposed technique relates to radio link reporting using multiple reference sequences to represent one selected radio link. The disclosure related to a method for use in a wireless device, for radio link reporting. The method comprises obtaining a radio link reporting model. The radio link reporting model defines how to represent one radio link from a plurality of candidate radio links, using two or more symbol sequences from a set of constituent symbol sequences. The method further comprises determining, based on the radio link reporting model, how to represent a selected radio link, from the plurality of candidate radio links, using two or more of the symbol sequences from the set of constituent symbol sequences, and transmitting the two or more symbol sequences to a network node. The disclosure also relates to corresponding devices and to a computer program for executing the proposed methods.

First claim

1 . A method for use in a wireless device, for radio link reporting, the method comprising:
obtaining a radio link reporting model, the radio link reporting model defining how to represent one radio link from a plurality of candidate radio links, using two or more symbol sequences from a set of constituent symbol sequences, determining, based on the radio link reporting model, how to represent a selected radio link, from the plurality of candidate radio links, using two or more of the symbol sequences from the set of constituent symbol sequences, and transmitting the two or more symbol sequences to a network node.

2 . The method of claim 1 , wherein the symbol sequences in the set of constituent symbol sequences have been selected such that the correlation between one symbol sequence in the set and any other symbol sequence in the set, is below a threshold.

3 . The method of claim 1 , wherein the number of symbol sequences in the set of constituent symbol sequences is less than the number of candidate radio links.

4 . The method according to claim 1 , wherein the obtaining comprises receiving information defining the radio link reporting model from the network node.

5 . The method according to claim 1 , wherein the obtaining comprises reading information defining the radio link reporting model stored in the wireless device.

6 . The method according to claim 1 , wherein the determining comprises determining two or more symbol sequences, from the set of constituent symbol sequences, to be transmitted.

7 . The method according to claim 1 , wherein the determining comprises determining time, frequency and/or code resources to be used for the transmission of the two or more symbol sequences.

8 . The method according to claim 1 , wherein the transmitting comprises transmitting the two or more symbol sequence separately in time, in frequency, or in the code domain.

9 . The method according to claim 1 , wherein one of the two or more symbol sequences defines a group of candidate radio links and the second an identity of a candidate radio link within the group.

10 . The method according to claim 1 , comprising:
performing measurements on the plurality of candidate radio links, and selecting from the candidate radio links, based on the performed measurements, at least one by the wireless device preferred radio link for communication with the network.

11 . The method according to claim 1 , wherein the radio link reporting is based on measurements performed on link quality measurement signals transmitted by a network node in the candidate radio links.

12 . The method of claim 11 comprising:
dividing a set of bits representing the selected radio link into two or more bit combinations together identifying the selected radio link; and
mapping each of the two or more bit combinations, together identifying the selected radio link, to a symbol sequence from a set of constituent symbol sequences.

13 . The method according to claim 1 , wherein the radio link reporting model comprises at least one of:
information defining how to divide one set of bits representing a selected radio link into two or more bit combinations together identifying a selected radio link; and a mapping between different bit combinations and respective symbol sequence from a set of constituent symbol sequences.

14 . A method for use in a network node, for receiving radio link reporting associated with a plurality of candidate radio links, the method comprising:
obtaining a radio link reporting model defining how to identify one radio link, from a plurality of candidate radio links, using two or more symbol sequences from a set of constituent symbol sequences, receiving two or more of the symbol sequences from a set of constituent symbol sequences, the two or more symbol sequences together identifying a selected radio link, and identifying the selected radio link based on the received two or more symbol sequences and the obtained radio link reporting model.

15 . The method of claim 14 , wherein the symbol sequences in the set of constituent symbol sequences have been selected such that the correlation between one symbol sequence in the set and any other symbol sequence in the set, is below a threshold.

16 . The method of claim 14 , wherein the number of symbol sequences in the set of constituent symbol sequences is less than the number of candidate radio links.

17 . The method according to claim 14 , wherein the identifying comprises identifying the selected radio link based on which symbol sequences, from the set of constituent symbol sequences, are received.

18 . The method according to claim 14 , wherein the identifying comprises identifying the selected radio link based on which time, frequency and/or code resources are used for receiving the symbol sequences.

19 . The method according to claim 14 , wherein one of the two or more symbol sequences defines a group of candidate radio links and the second an identity of a candidate radio link within the group.

20 . The method according to claim 14 , wherein receiving comprises receiving the two or more symbol sequences separately in time, in frequency, or in the code domain.

21 . The method according to claim 14 , comprising:
providing information defining the radio link reporting model to the wireless device.

22 . The method according to claim 14 , wherein the reporting is based on measurements performed on link quality measurement signals transmitted by a network node in the candidate radio links.

23 . The method according to claim 14 , wherein the identifying comprises:
determining bit combinations represented by the received symbol sequences; and determining a set of bits representing a selected radio link by merging the determined bit combinations.

24 . The method according to claim 14 , wherein the radio link reporting model comprises:
a mapping between the symbol sequences and a respective bit combination; and information defining how to merge two or more of the bit combinations together identifying the selected radio link into one set of bits representing the selected radio link.

25 .- 26 . (canceled)

27 . A wireless device being configured for radio link reporting, the wireless device comprising:
circuitry communication interface; and processing circuitry configured to cause the wireless device:
to obtain a radio link reporting model, the radio link reporting model defining how to represent one radio link from a plurality of candidate radio links, using two or more symbol sequences from a set of constituent symbol sequences,
to determine, based on the radio link reporting model, how to represent a selected radio link, from the plurality of candidate radio links, using two or more of the symbol sequences from the set of constituent symbol sequences, and
to transmit the two or more symbol sequences to a network node.

28 .- 39 . (canceled)

40 . A network node in a cellular communication network configured for receiving radio link reporting associated with a plurality of candidate radio links, the network node, comprising:
a communication interface; and processing circuitry configured to cause the network node:
to obtain a radio link reporting model defining how to identify one radio link, from a plurality of candidate radio links, using two or more symbol sequences from a set of

Assignees

• ERICSSON TELEFON AB L M (publ)

Inventors

• Rune Johan
• Reial Andres
• Sahlin Henrik
• Da Silva Icaro L J

Classifications

• H04W72/0453

  Resources in frequency domain, e.g. a carrier in FDMA · CPC title

• H04W24/08

  Testing, {supervising or monitoring} using real traffic · CPC title

• H04L5/0016

  Time-frequency-code · CPC title

• H04B7/0632

  Channel quality parameters, e.g. channel quality indicator [CQI] · CPC title

• H04W72/0446

  Resources in time domain, e.g. slots or frames · CPC title