Abstract
A method of data transmi ssion over guard sub-carrier s is provided in a multi-carrier OFDM system. Adjacent radio fr equency (RF) carriers are used to carry radio signals transmitted through adjacent frequency channels. A plurality of guard sub-carriers between adjacent frequenc y channels are aligned and identified for data transmission in a pre-defined ph ysical resource unit. The identified guard sub-carriers do not overlap with normal da ta sub-carriers of the radio signals transmitted through the adja cent frequency channels. At least one of the identified guard sub-carriers is reserved as NULL sub- carrier. A flexible multi-carrier transceiver architecture is also provided in a multi-carrier OFDM system. Different multi-carrier and/or MIMO/SISO data transmission schemes are implemented by adaptively reconfigure same hardware modules including common MAC layer module physical layer entities and RF entities. Furthermore the flexible multi-carrier tr ansceiver architecture can be used to support data transmission over guard sub-carriers.
A method of data transmi ssion over guard sub-carrier s is provided in a multi-carrier OFDM system. Adjacent radio fr equency (RF) carriers are used to carry radio signals transmitted through adjacent frequency channels. A plurality of guard sub-carriers between adjacent frequenc y channels are aligned and identified for data transmission in a pre-defined ph ysical resource unit. The identified guard sub-carriers do not overlap with normal da ta sub-carriers of the radio signals transmitted through the adja cent frequency channels. At least one of the identified guard sub-carriers is reserved as NULL sub- carrier. A flexible multi-carrier transceiver architecture is also provided in a multi-carrier OFDM system. Different multi-carrier and/or MIMO/SISO data transmission schemes are implemented by adaptively reconfigure same hardware modules including common MAC layer module physical layer entities and RF entities. Furthermore the flexible multi-carrier tr ansceiver architecture can be used to support data transmission over guard sub-carriers.
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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| Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
| 4G | 12/12/2016 | ISLD-201703-001 | MEDIATEK INC |
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Specification Information
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| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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Technologies
Resource configuration
Product
Use Cases
Wireless communication
Services
Claim
1. A method, comprising:', '(a) aligning a plurality of guard sub-carriers between adjacent frequency channels in a multi- carrier OFDM wireless system, wherein adjacent radio frequency carriers are used to carry radio signals transmitted through the adjacent frequency channels;', '(b) identifying a number of guard sub-carriers among the plurality of guard sub-carriers available for data transmission in a pre-defined physical resource unit, wherein the identified guard sub-carriers do not overlap with normal data sub- carriers of the radio signals transmitted through the adjacent frequency channels; and', '(c) reserving one or more guard sub-carriers such that the reserved one or more identified guard sub-carriers is not used for data transmission.
2. The method of Claim 1, wherein the identified guard sub-carriers are originally reserved for no data transmission if not aligned, and wherein the identified guard sub-carriers are orthogonal to normal data sub-carriers.
3. The method of Claim 1, wherein same physical resource unit size is used for the identified guard sub-carriers as well as for normal data sub-carriers.
4. The method of Claim 3, wherein same pilot pattern is used for the identified guard sub- carriers as well as for normal data sub- carriers.
5. The method of Claim 1, further comprising: allocating guard sub-carriers to be utilized for data transmission, wherein a reference signal is periodically transmitted over the utilized guard sub-carriers.
6. The method of Claim 1, wherein the identified guard sub-carriers are aggregated into a subsidiary frequency channel, and wherein a MAC layer indication indicates the support of data transmission over the subsidiary frequency channel.
7. A multi-carrier wireless device, comprising: a plurality of antennas, wherein each antenna receives from and transmit to radio signals carried by adjacent radio frequency carriers and transmitted through adjacent frequency channels in a multi-carrier OFDM wireless system; and a multi- carrier RF module coupled to the plurality of antennas, wherein a number of overlapped guard sub-carriers of the radio signal transmitted through the adjacent frequency channels are aligned and identified for data transmission in a pre-defined physical resource unit, wherein the identified guard sub-carriers do not overlap with normal data sub- carriers of the radio signals transmitted through the adjacent frequency channels, and wherein at least one or more identified guard sub-carriers is reserved for no data transmission.
8. The wireless device of Claim 7, wherein the identified guard sub-carriers are originally reserved for no data transmission if not aligned, and wherein the identified guard sub-carriers are orthogonal to normal data sub-carriers.
9. The wireless device of Claim 7, wherein same physical resource unit size is used for the identified guard sub-carriers as well as normal data sub-carriers
10. The wireless device of Claim 9, wherein same pilot pattern is used for the identified guard sub-carriers as well as for normal data sub-carriers
11. The wireless device of Claim 7, wherein a reference signal is periodically transmitted over allocated guard sub-carriers that are utilized for data transmission
12. The wireless device of Claim 7, wherein the identified guard sub-carriers are aggregated into a subsidiary frequency channel, and wherein a MAC layer indication indicates the support of data transmission over the subsidiary frequency channel
13. A wireless device, comprising: a plurality of radio frequency (RF) entities coupled to a plurality of antennas; a plurality of physical layer entities coupled to the plurality of RF entities through a multiplexer; a common MAC control entity coupled to each physical layer entity, wherein each physical layer entity is configured to process one or multiple radio signals associated with one or multiple frequency channels; and an adaptive multi-carrier controller that controls a RF carrier frequency of each RF entity, wherein each RF entity receives and transmits one or multiple radio signals associated with one or multiple corresponding frequency channels
14. The device of Claim 13, wherein one of the physical layer entities is configured to process a radio signal associated with a first active frequency channel, and wherein at least two of the RF entities receive and transmit the radio signal associated with the first active frequency channel for multiple-input multiple- output (MIMO) support
15. The device of Claim 14, wherein the device is part of a mobile station, and wherein the number of antennas to support MIMO is equal to a total number of antennas divided by a number of active frequency channels supported by the mobile station
16. The device of Claim 13, wherein two of the physical layer entities are configured to process radio signals associated with a first and a second frequency channels, and wherein two of the RF entities receive and transmit radio signals associated with the first and the second RF frequency channels for multi-carrier support
17. The device of Claim 13, wherein a first and a second physical layer entities are configured to process radio signals associated with two adjacent frequency channels having a first and a second RF carrier frequencies, wherein a third physical layer entity is configured to process a third radio signal associated with a plurality of guard sub-carriers between the two adjacent frequency channels having a third RF carrier frequency
18. The device of Claim 17, wherein the first, second, and third physical layer entities are implemented by sharing one single baseband hardware module, and wherein said single baseband hardware processes radio signals associated with the same frequency channels having the same first, second, and third RF carrier frequencies
19. The device of Claim 18, wherein the RF carrier frequencies of the RF entities to jointly transmit or receive the first, second, and third radio signals are the same.
20. An apparatus, comprising: a plurality of radio frequency (RF) entities coupled to a plurality of antennas; a plurality of physical layer entities coupled to the plurality of RF entities through a multiplexer; and means for configuring each physical layer entity to process one or multiple radio signals associated with one or multiple frequency channels, wherein the means is also for controlling a RF carrier frequency of each RF entity such that each RF entity receives and transmits one or multiple radio signals associated with one or multiple corresponding frequency channels.
21. The apparatus of Claim 20, wherein one of the physical layer entities is configured to process a radio signal associated with a first active frequency channel, and wherein at least two of the RF entities receive and transmit the radio signal associated with the first active frequency channel for multiple-input multiple- output (MIMO) support.
22. The apparatus of Claim 21, wherein the apparatus is part of a mobile station, and wherein the number of antennas to support MIMO is equal to a total number of antennas divided by a number of active frequency channels supported by the mobile station.
23. The apparatus of Claim 20, wherein two of the physical layer entities are configured to process radio signals associated with a first and a second frequency channels, and wherein two of the RF entities receive and transmit radio signals associated with the first and the second frequency channels for multi-carrier support.
24. The apparatus of Claim 20, wherein a first and a second physical layer entities are configured to process radio signals associated with two adjacent frequency channels having a first and a second RF carrier frequencies, wherein a third physical layer entity is configured to process a third radio signal associated with a plurality of guard sub-carriers between the two adjacent frequency channels having a third RF carrier frequency.
25. The apparatus of Claim 24, wherein the first, second, and third physical layer entities are implemented by sharing one single baseband hardware module, and wherein said single baseband hardware processes radio signals associated with the same frequency channels having the same first, second, and third RF carrier frequencies.
26. The device of Claim 25, wherein the RF carrier frequencies of the RF entities to jointly transmit or receive the first, second, and third radio signals are the same.']
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SUMMARY
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