Channel state information transmission
First Claim
Patent Images
1. A method comprising:
- a) receiving, by a wireless device, at least one control message from a first base station, said at least one control message causing configuration of measurement parameters of said wireless device, said configuration triggering measurements of channel state information corresponding to a subset of carriers, said at least one control message causes configuration of;
i) a channel state information transmission period;
ii) a channel state information transmission resource;
iii) a channel state information measurement resource;
iv) a physical uplink control channel format; and
v) a list of carriers for said measurement of channel state information, carriers in said list of carriers belonging to at least two base stations or belonging to at least two sectors of said first base station;
b) measuring, by said wireless device, said channel state information for each active carrier in said list of carriers on a plurality of OFDM subcarriers and a first plurality of subframes determined by a measurement resource based on said configuration;
c) multiplexing and encoding said channel state measurement information based on said physical uplink control channel format;
d) spreading by multiplying said multiplexed and encoded information by a sequence generated in said wireless device;
e) transmitting said spread information employing single-carrier OFDM transmission on said channel state information transmission resource according to said channel state information transmission period; and
f) simultaneously receiving signals from a subset of active carriers in said list of carriers, said signals carrying a plurality of data packets for said wireless device, carriers in said subset of carriers belonging to said at least two base stations or belonging to at least two sectors of said first base station.
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Abstract
A wireless device receives control messages from a first base station. The control messages configure measurement parameters and triggers measurements of channel state information for a subset of carriers. The control messages configure an uplink transmission resource, physical uplink channel format, and a list of carriers. The wireless device measures and transmits the channel state information for each active carrier in the list of carriers. The wireless device simultaneously receives signals from a subset of carriers belonging to at least two base stations or belonging to at least two sectors of the first base station.
59 Citations
20 Claims
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1. A method comprising:
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a) receiving, by a wireless device, at least one control message from a first base station, said at least one control message causing configuration of measurement parameters of said wireless device, said configuration triggering measurements of channel state information corresponding to a subset of carriers, said at least one control message causes configuration of; i) a channel state information transmission period; ii) a channel state information transmission resource; iii) a channel state information measurement resource; iv) a physical uplink control channel format; and v) a list of carriers for said measurement of channel state information, carriers in said list of carriers belonging to at least two base stations or belonging to at least two sectors of said first base station; b) measuring, by said wireless device, said channel state information for each active carrier in said list of carriers on a plurality of OFDM subcarriers and a first plurality of subframes determined by a measurement resource based on said configuration; c) multiplexing and encoding said channel state measurement information based on said physical uplink control channel format; d) spreading by multiplying said multiplexed and encoded information by a sequence generated in said wireless device; e) transmitting said spread information employing single-carrier OFDM transmission on said channel state information transmission resource according to said channel state information transmission period; and f) simultaneously receiving signals from a subset of active carriers in said list of carriers, said signals carrying a plurality of data packets for said wireless device, carriers in said subset of carriers belonging to said at least two base stations or belonging to at least two sectors of said first base station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A wireless device comprising:
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a) one or more communication interfaces to communicate with a first base station; b) one or more processors; and c) memory storing instructions that, when executed by said one or more processors, perform the following; i) receive at least one control message from said first base station via said one or more communication interfaces, said at least one control message causing configuration of measurement parameters of said wireless device, said configuration triggering measurements of channel state information corresponding to a subset of carriers, said at least one control message causes configuration of; (1) an uplink transmission resource; (2) physical uplink channel format; and (3) a list of carriers for said measurement of channel state information, carriers in said list of carriers belonging to at least two base stations or belonging to at least two sectors of said first base station; ii) measure said channel state information for each active carrier in said list of carriers based on said configuration; iii) multiplex and encode said channel state measurement information based on said physical uplink channel format; iv) transmit said information employing single-carrier OFDM transmission on said uplink transmission resource; and v) simultaneously receive signals from a subset of carriers in said list of carriers, said signals carrying a plurality of data packets for said wireless device, carriers in said subset of carriers belonging to said at least two base stations or belonging to at least two sectors of said first base station. - View Dependent Claims (19, 20)
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Specification