SUDAC, user equipment, base station and SUDAC system

Patent metadata

Field	Value
Publication number	US-10461840-B2
Application number	US-201715439815-A
Country	US
Kind code	B2
Filing date	Feb 22, 2017
Priority date	Aug 27, 2014
Publication date	Oct 29, 2019
Grant date	Oct 29, 2019

Abstract

A SUDAC includes a first and a second wireless communication interface and a processor. The first wireless communication interface is configured for using ultra-high frequency in order to establish at least one backend communication link with a base station. The second wireless communication interface is configured for using extremely-high frequency in order to establish at least one frontend communication link with a user equipment. The processor is configured for at least partially forwarding a user information signal received via the frontend communication link to be transmitted via the backend communication link while frequency converting the extremely-high frequency to the ultra-high frequency vice versa. The processor is further configured for extracting control information from the user information signal and for controlling forward parameters of the first or the second wireless communication interface based on the control information.

First claim

The invention claimed is:

1. A Shared User Equipment-Side Distributed Antenna Component (SUDAC) comprising:
a first wireless communication interface, configured for using ultra-high frequency in order to establish at least one backend communication link with a base station; and
a second wireless communication interface, configured for using extremely-high frequency in order to establish at least one frontend communication link with a user equipment; and
a processor,
wherein the processor is configured for at least partially forwarding a first user information signal received via the frontend communication link as a first communication signal to be transmitted via the backend communication link while frequency converting the extremely-high frequency to the ultra-high frequency; or
wherein the processor is configured for at least partially forwarding a second communication signal received via the backend communication link as a second user information signal to be transmitted via the frontend communication link while frequency converting the ultra-high frequency to the extremely-high frequency;

wherein the processor is configured for extracting control information from the first user information signal and for controlling forward parameters of the first or the second wireless communication interface based on the control information,
wherein the control information is a transmit power, a modulation scheme or is related to a frequency, a code, a space and/or a time slot to be utilized by the SUDAC;
wherein the forward parameters relates at least to one of a time, a frequency, a space or a code resource of the backend communication link or the frontend communication link; and
wherein the processor is configured for frequency converting the first user information signal received at extremely-high frequency to the first communication signal at the ultra-high frequency and for frequency converting the second communication signal at the ultra-high frequency to the second user information signal at the extremely-high frequency; or
wherein the SUDAC comprises an analog to digital converter configured for digitizing the user information signal received at extremely-high frequency, and a digital to analog converter configured for analogizing a digitalized communication signal to acquire the communication signal at the ultra-high frequency wherein the processor is configured for generating the digitalized communication signal based on the digitalized user information signal.

2. The SUDAC according to claim 1 , wherein the frontend communication link comprises a plurality of control channels and at least one payload channel, wherein the processor is configured to reduce a bandwidth of the payload channel), wherein the processor is configured to, during a second time duration during which the bandwidth of the payload channel is reduced, increase a number of control channels when compared to a first time duration having a same length as the second time duration wherein the processor is configured to, during the first time duration, not reduce the bandwidth of the payload channel and wherein the processor is configured to forward the payload channel.

3. The SUDAC according to claim 1 , wherein the backend communication link comprises a plurality of backend control channels and at least one backend payload channel and wherein the SUDAC is configured for transmitting or receiving control data to or from the base station, wherein the processor is configured to adapt a transmission characteristic of an antenna function of the base station based on the control data of a transmitted backend control channel or to adapt a function of the SUDAC based on the control data of a received backend control channel), wherein the function of the SUDAC relates to parameters of the frontend communication link or to switch the SUDAC to a sleep-mode.

4. The SUDAC according to claim 1 , wherein the SUDAC is configured for utilizing the frontend communication link to transmit or receive data to or from a second user equipment or a second SUDAC.

5. The SUDAC according to claim 1 , wherein the frontend communication link comprises a plurality of control channels and at least one payload channel, wherein the SUDAC is configured for transmitting at least parts of the first user information signal received via the frontend communication link in a decoded version of the parts of the first user information signal via the backend communication link and to transmit at least parts of the communication signal received via the backend communication link in a compressed version of the parts of the communication signal via the frontend communication link, wherein the processor is further configured for adapting a rate of compression or encoding/decoding based on the control information or based on a control signal received via the backend communication link.

6. The SUDAC according to claim 5 , wherein the processor is configured for adapting the rate of compression and encoding/decoding based on a ratio of a bandwidth of the plurality of control channels and of the bandwidth of the at least one payload channel.

7. The SUDAC according to claim 1 , wherein the frontend communication link comprises a first plurality of rendezvous channels, each rendezvous channel comprising a plurality of control channels, wherein the processor is configured for adapting an operation mode of the SUDAC based on the control information comprised in the plurality of control channels.

8. The SUDAC according to claim 1 , wherein
the backend communication link comprises a backend payload channel and wherein the frontend communication link comprises a frontend payload channel;
wherein the backend communication link comprises a backend random access channel or wherein the frontend communication link comprises a frontend random access channel;
wherein the SUDAC is configured for receiving a random frontend information from a further user equipment using the frontend random access channel or to receive a random backend information from a further base station using the backend random access channel; and
wherein the SUDAC is configured for transmitting the random frontend information using the frontend communication link or the backend communication link or for sending the random backend information using the frontend communication link or the backend communication link.

9. The SUDAC according to claim 1 , wherein the SUDAC comprises a first operation mode (active) in which the SUDAC transmits or receives information via the backend communication link, wherein the processor is configured to extract control information from the communication signal received from the base station, the control information indicating a sleep-mode request and wherein the processor is configured for changing the first operation mode to a second operation mode (sleep) in which the SUDAC is configured for not transmitting information via the backend communication link or the frontend communication link.

10. The SUDAC according to claim 1 , wherein the SUDAC is configured for establishing a first and a second backend communication link, to receive a first and a second payload information using resources separated from each other and to transmit the frontend communication signal comprising the first and the second payload information to perform backend carrier aggregation; and/or
wherein the SUDAC is configured for establishing a first and a second frontend communication link, to receive a first and a second payload information using resources separated from each other and to transmit the backend communication signal comprising the first and the second payload information to perform frontend carrier aggregation.

Assignees

• Fraunhofer Ges Forschung

Inventors

• Breiling Marco
• Burkhardt Frank
• Rohde Christian
• Ng Wing Kwan
• Schober Robert

Classifications

• H04B7/15542 Primary

  Selecting at relay station its transmit and receive resources (selection of wireless resources by user or terminal H04W72/02; arrangements affording multiple use of the transmission path by two-dimensional division of the resources H04L5/0003, or by allocating sub-channels H04L5/003) · CPC title

• H04W52/0235

  where the received signal is a power saving command · CPC title

• H04B7/15592 Primary

  Adapting at the relay station communication parameters for supporting cooperative relaying, i.e. transmission of the same data via direct - and relayed path (cooperative diversity H04B7/024) · CPC title

• H04W72/0453

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

• Y02D70/446

  Cross-Sectional Technologies · mapped topic