Dynamic physical resource block control apparatus and process for dynamically controlling allocation of a physical resource block

Patent metadata

Field	Value
Publication number	US-11272375-B2
Application number	US-202016841106-A
Country	US
Kind code	B2
Filing date	Apr 6, 2020
Priority date	Apr 15, 2019
Publication date	Mar 8, 2022
Grant date	Mar 8, 2022

Abstract

A dynamic physical resource block control apparatus dynamically controls allocation of a physical resource block and includes: a dynamic spectrum arbitrage controller in communication with LTE wireless channels and a secondary user, the dynamic spectrum arbitrage controller: produces a status request to the LTE wireless channels, receives channel status response from the LTE wireless channels in response to the channel status request; receives a PRB allocation request from the secondary user; and produces a PRB map in response to the PRB allocation request; and LTE wireless channels in communication with a primary user and the secondary user and that: communicates a PRB map to the primary user; receives primary user data from the primary user; receives secondary user data from the secondary user.

First claim

What is claimed is:

1. A process for dynamically controlling allocation of physical resource blocks with a dynamic physical resource block controller, the process comprising:
monitoring, by the dynamic spectrum arbitrage controller, spectrum occupancy activity of a primary user over LTE wireless channels, the dynamic spectrum arbitrage controller being in communication with a secondary user that has a lower priority access to the LTE wireless channels than the primary user;
sending, by the secondary user, a PRB allocation request to the dynamic spectrum arbitrage controller when the secondary user has secondary user data to send;
acquiring, by the dynamic spectrum arbitrage controller, a status of the LTE wireless channels; request to the LTE wireless channels, such that the status comprises which of the LTE wireless channels are busy and which of the LTE wireless channels are idle;
performing, by the dynamic spectrum arbitrage controller, a process for optimal dynamic spectrum arbitrage after receiving the status of response from the LTE wireless channels and in response to receiving the PRB allocation request from the secondary user;
producing, by the dynamic spectrum arbitrage controller, a PRB map from performing the process for optimal dynamic spectrum arbitrage;
returning, by the dynamic spectrum arbitrage controller, the PRB map to the secondary user in response to the PRB allocation request; and
transmitting, by the secondary user, secondary user data over the LTE wireless channels in accordance with the PRB map from the dynamic spectrum arbitrage controller to dynamically control allocation of physical resource blocks with the dynamic physical resource block control apparatus.

2. The process for dynamically controlling allocation of a physical resource block of claim 1 , further comprising:
building, by a hazard function determiner of the dynamic spectrum arbitrage controller, a non-parametric cumulative hazard function, wherein the non-parametric cumulative hazard function built from idle time durations for each of the LTE wireless channels;
waiting, by a timer of the dynamic spectrum arbitrage controller, for the secondary user to make a PRB allocation request to the dynamic spectrum arbitrage controller via the control communicator;
sending, by a control communicator of the dynamic spectrum arbitrage controller, a request receive signal to the timer, the request receive signal being produced by the control communicator upon receipt of the PRB allocation request from the secondary user;
terminating waiting by the timer in response to receiving the request receive signal from the control communicator;
sending, by the timer, the non-parametric cumulative hazard function to a PRB mapper of the dynamic spectrum arbitrage controller after terminating the waiting by the timer;
running, by the PRB mapper, a process for optimal dynamic spectrum arbitrage;
outputting, by the PRB mapper, the PRB map as a result of running the process for optimal dynamic spectrum arbitrage; and
sending, by the dynamic spectrum arbitrage controller, the PRB map to the secondary user.

3. The process for dynamically controlling allocation of a physical resource block of claim 2 , wherein the process for optimal dynamic spectrum arbitrage comprises:
setting, at a time t request when the dynamic spectrum arbitrage controller receives the PRB allocation request from the secondary user, to zero a number x i of the physical resource blocks for each of the LTE wireless channels that is idle so that x i =0;
determining a change ΔH i in the non-parametric cumulative hazard function for each LTE wireless channels that is idle as: ΔH i =H i (t i +x i +1)−H(t i );
setting a global minimum ΔH min of the change ΔH i in the non-parametric cumulative hazard function to the minimum for the changes in the non-parametric cumulative hazard function for each LTE wireless channels that is idle as

Δ
⁢

H
min

=

min
i

⁢

(

Δ
⁢

⁢

H
i

)

;

selecting, as a target LTE wireless channel m, the LTE wireless channel from among the LTE wireless channels that are idle for which ΔH m =ΔH min ;
determining if ΔH min <(−ln(p)), wherein p is a threshold probability of a successful transmission;
allocating, to the secondary user for sending the secondary user data, an additional physical resource block of the target LTE wireless channel m if ΔH min <(−ln(p)); and
sending, if ΔH min ≥(−ln(p)), the PRB map from the dynamic spectrum arbitrage controller to the secondary user, wherein the PRB map comprises the number x i of the physical resource blocks allocated from each of the LTE wireless channels from time t request .

Assignees

• Government Of The Us Secretary Of Commerce

Inventors

• Sahoo Anirudha
• Hall Timothy Alan
• Hagwood Robert Charles

Classifications

• H04W16/10

  Dynamic resource partitioning · CPC title

• H04W28/16

  Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service] · CPC title

• H04W72/0453

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

• H04L5/0094 Primary

  Indication of how sub-channels of the path are allocated · CPC title

• H04W16/14 Primary

  Spectrum sharing arrangements {between different networks} · CPC title