Enhanced access channel masks for xHRPD
First Claim
1. A method of performing Pseudo-Noise (PN) quadrature covering for transmitting data via an access channel by an access terminal, the method comprising:
- receiving an access long code mask MIACMAC and an access long code mask MQACMAC by the access terminal;
generating a MI mask (In-phase mask) which is a mask sequence used for generating a PNI (In-phase pseudo-noise) sequence and a MQ mask (Quadrature-phase mask) which is a mask sequence used for generating a PNQ (Quadrature-phase pseudo-noise) sequence by the access terminal;
generating the PNI and the PNQ which are sequences for the PN quadrature covering by the access terminal; and
transmitting the data covered with the generated PNI sequence and the data covered with the generated PNQ sequence via the access channel by the access terminal,wherein the MIACMAC and the MQACMAC are related to an Access channel Medium Access Control (MAC) protocol,wherein MI3 to MI0 of the MI mask and MQ3 to MQ0 of the MQ mask are set to the lower 4 bits of an assigned channel number,wherein MI11 to MI4 of the MI mask are set to be equal to the result of (A31 to A24)⊕
(A23 to A16)⊕
(A15 to A8)⊕
(A7 to A0), where A31 to A0 are lower 32 bits of the MIACMAC, wherein MQ11 to MQ4 of the MQ mask are set to be equal to the result of (B31 to B24)⊕
(B23 to B16)⊕
(B15 to B8)⊕
(B7 to B1, B32), where B31 to B0 are lower 32 bits of the MQACMAC, where B32 is the 33rd bit of the MQACMAC,wherein ⊕
denotes exclusive OR operation, andwherein the PNI is a sequence summed by the MI mask and a PN sequence generated by a polynomial PI(x)=x12+x6+x4+x +1 for the In-phase branch of the Quadrature Phase Shift Keying (QPSK) and the PNQ is a sequence summed by the MQ mask and a PN sequence generated by a polynomial PQ(x)=x12+x9+x3+x2+1 for the Quadrature-phase branch of the Quadrature Phase Shift Keying (QPSK).
1 Assignment
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Accused Products
Abstract
Disclosed is a method of performing Pseudo-random-Noise (PN) quadrature covering for transmitting data via an access channel. Such method is achieved by receiving a 42-bit access long code mask MIACMAC and a 42-bit access long code mask MQACMAC from an upper layer; generating an MI mask and an MQ mask for PN quadrature covering by using certain bits of an assigned channel number for the access channel and by performing exclusive OR operations on certain bits of the received access long code mask MIACMAC and performing exclusive OR operations on certain bits of the received access long code mask MQACMAC; and transmitting signals via the access channel based on the generated 12-bit MI mask and the generated 12-bit MQ mask.
12 Citations
7 Claims
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1. A method of performing Pseudo-Noise (PN) quadrature covering for transmitting data via an access channel by an access terminal, the method comprising:
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receiving an access long code mask MIACMAC and an access long code mask MQACMAC by the access terminal; generating a MI mask (In-phase mask) which is a mask sequence used for generating a PNI (In-phase pseudo-noise) sequence and a MQ mask (Quadrature-phase mask) which is a mask sequence used for generating a PNQ (Quadrature-phase pseudo-noise) sequence by the access terminal; generating the PNI and the PNQ which are sequences for the PN quadrature covering by the access terminal; and transmitting the data covered with the generated PNI sequence and the data covered with the generated PNQ sequence via the access channel by the access terminal, wherein the MIACMAC and the MQACMAC are related to an Access channel Medium Access Control (MAC) protocol, wherein MI3 to MI0 of the MI mask and MQ3 to MQ0 of the MQ mask are set to the lower 4 bits of an assigned channel number, wherein MI11 to MI4 of the MI mask are set to be equal to the result of (A31 to A24)⊕
(A23 to A16)⊕
(A15 to A8)⊕
(A7 to A0), where A31 to A0 are lower 32 bits of the MIACMAC, wherein MQ11 to MQ4 of the MQ mask are set to be equal to the result of (B31 to B24)⊕
(B23 to B16)⊕
(B15 to B8)⊕
(B7 to B1, B32), where B31 to B0 are lower 32 bits of the MQACMAC, where B32 is the 33rd bit of the MQACMAC,wherein ⊕
denotes exclusive OR operation, andwherein the PNI is a sequence summed by the MI mask and a PN sequence generated by a polynomial PI(x)=x12+x6+x4+x +1 for the In-phase branch of the Quadrature Phase Shift Keying (QPSK) and the PNQ is a sequence summed by the MQ mask and a PN sequence generated by a polynomial PQ(x)=x12+x9+x3+x2+1 for the Quadrature-phase branch of the Quadrature Phase Shift Keying (QPSK). - View Dependent Claims (2, 3)
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4. An apparatus to perform Pseudo-Noise (PN) quadrature covering for transmitting data via an access channel, the apparatus comprising:
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a receiver unit configured to receive an access long code mask MIACMAC and an access long code mask MQACMAC; a generator unit configured to generate a MI mask (In-phase mask) which is a mask sequence used for generating a PNI (In-phase pseudo-noise) sequence and a MQ mask (Quadrature-phase mask) which is a mask sequence used for generating a PNQ (Quadrature-phase pseudo-noise) sequence; and a transmitter unit configured to transmit the data covered with the generated PNI sequence and the data covered with the generated PNQ sequence via the access channel, wherein the MIACMAC and the MQACMAC are related to an Access channel Medium Access Control (MAC) protocol, wherein MI3 to MI0 of the MI mask and MQ3 to MQ0 of the MQ mask are set to the lower 4 bits of an assigned channel number, wherein MI11 to MI4 of the MI mask are set to be equal to the result of (A31 to A24)⊕
(A23 to A16)⊕
(A15 to A8)⊕
(A7 to A0), where A31 to A0 are lower 32 bits of the MIACMAC,wherein MQ11 to MQ4 of the MQ mask are set to be equal to the result of (B31 to B24)⊕
(B23 to B16)⊕
(B15 to B8)⊕
(B7 to B1, B32), where B31 to B0 are lower 32 bits of the MQACMAC, where B32 is the 33rd bit of the MQACMAC,wherein ⊕
denotes exclusive OR operation, andwherein the PNI is a sequence summed by the MI mask and a PN sequence generated by a polynomial PI(x)=x12+x6+x4+x+1 for the In-phase branch of the Quadrature Phase Shift Keying (QPSK) and the PNQ is a sequence summed by the MQ mask and a PN sequence generated by a polynomial PQ(x)=x12+x9+x3+x2+1 for the Quadrature-phase branch of the Quadrature Phase Shift Keying (QPSK). - View Dependent Claims (5, 6)
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7. An apparatus to perform Pseudo-Noise (PN) quadrature covering for transmitting data via an access channel, the apparatus comprising:
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receiver configured to receive an access long code mask MIACMAC and an access long code mask MQACMAC; means for generating a MI mask (In-phase mask) which is a mask sequence used for generating a PNI (In-phase pseudo-noise) sequence and a MQ mask (Quadrature-phase mask) which is a mask sequence used for generating a PNQ (Quadrature-phase pseudo-noise) sequence; and transmitter configured to transmit the data covered with the generated PNI sequence and the data covered with the generated PNQ sequence via the access channel, wherein the MIACMAC and the MQACMAC are related to an Access channel Medium Access Control (MAC) protocol, wherein MI3 to MI0 of the MI mask and MQ3 to MQ0 of the MQ mask are set to the lower 4 bits of an assigned channel number, wherein MI11 to MI4 of the MI mask are set to be equal to the result of (A31 to A24)⊕
(A23 to A16)⊕
(A15 to A8)⊕
(A7 to A0), where A31 to A0 are lower 32 bits of the MIACMAC,wherein MQ11 to MQ4 of the MQ mask are set to be equal to the result of (B31 to B24)⊕
(B23 to B16)⊕
(B15 to B8)⊕
(B7 to B1, B32), where B31 to B0 are lower 32 bits of the MQACMAC, where B32 is the 33rd bit of the MQACMAC,wherein ⊕
denotes exclusive OR operation, andwherein the PNI is a sequence summed by the MI mask and a PN sequence generated by a polynomial PI(x)=x12+x6+x4+x+1 for the In-phase branch of the Quadrature Phase Shift Keying (QPSK) and the PNQ is a sequence summed by the MQ mask and a PN sequence generated by a polynomial PQ(x)=x12+x9+x3+x2+1 for the Quadrature-phase branch of the Quadrature Phase Shift Keying (QPSK).
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Specification