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Emergency data transmission over unlicensed radio frequency spectrum band

專利號(hào)
US10034313B2
公開日期
2018-07-24
申請(qǐng)人
QUALCOMM Incorporated（US CA San Diego）
發(fā)明人
Xiaoxia Zhang; Tao Luo; Jun Wang
IPC分類
H04M11/04; H04W76/00; H04L12/18; H04W74/08; H04W74/00; H04W74/02; H04W76/50; H04W4/90; H04W72/04
技術(shù)領(lǐng)域
unlicensed,emergency,spectrum,lbt,cca,band,radio,node,lte,may
地域： CA CA San Diego

摘要

Techniques are described for wireless communication. A first method includes determining that a first node associated with a first operator in a deployment of operators has emergency data to transmit over an unlicensed radio frequency spectrum band and transmitting, by the first node, a signal over the unlicensed radio frequency spectrum band. The signal may indicate that the first node has emergency data to transmit. A second method includes receiving, at a first base station associated with a first operator in a deployment of operators, an uplink transmission from a user equipment (UE) indicating that the UE has emergency uplink data to transmit over an unlicensed radio frequency spectrum band and transmitting, by the first base station, an indication to a second base station that the UE has emergency uplink data to transmit over the unlicensed radio frequency spectrum band.

說(shuō)明書

FIG. 8 shows an example 800 of how the three different asynchronous operators shown in FIG. 7 (e.g., Operator 1, Operator 2, and Operator 3) might be affected when a first of the operators (e.g., Operator 1) adjusts an LBT yielding parameter, in accordance with various aspects of the present disclosure. More particularly, the example 800 shows how the three different asynchronous operators are affected when Operator 1 adjusts the N parameter of its N/K protocol from N0=2 to N1=4, while Operator 2 and Operator 3 maintain an N parameter of N0=2. By way of example, all of the operators maintain a K parameter of K0=1.

As shown, a transmitting apparatus (or apparatuses) of Operator 1 may gain access to an unlicensed radio frequency spectrum band during a first LBT frame 805-a, a second LBT frame 805-b, and a third LBT frame 805-c after successfully performing a respective first CCA 810-a, second CCA 810-b, and third CCA 810-c to contend for access to the unlicensed radio frequency spectrum band. Assuming that the transmitting apparatus of Operator 1 satisfies its threshold of N1=4 LBT frames with its use of the third LBT frame 805-c, the transmitting apparatus of Operator 1 may forego performing a fourth CCA 810-d and not transmit over the unlicensed radio frequency spectrum band during a fourth LBT frame 805-d.

權(quán)利要求

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