Method for transmitting reference signals
First Claim
1. A method of reference signal transmission in resource blocks (RBs) supporting multiple antenna port transmission in a wireless communication system, comprising:
- determining a first and a second mutually exclusive sets of RBs, at least one broadcast channel (BCH) being provided in RBs belonging to said first set of RBs;
transmitting a number of reference signals (RSes) only in at least one RB belonging to said second set of RBs when a conflict between transmitting said number of RSes and providing said broadcast channel is detected, wherein each RB comprises at least one resource elements (REs);
wherein the conflict between transmitting said number of RSes and providing said broadcast channel comprises;
REs to be used for transmitting said number of RSes and REs used for providing said broadcast channel overlap;
wherein said RBs supporting multiple antenna port transmission are transmitted in subframes (SFs) supporting multiple antenna port transmission; and
wherein said number of RSes are transmitted only in a subset of subframes which do not comprise the RBs belonging to said first set of RBs, wherein said number of RSes are transmitted in a same slot of said subset of subframes, and wherein said number of RSes are transmitted in every Mth RB in said same slot, where M is an integer that is greater than or equal to one.
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Abstract
A method and apparatus for transmitting reference signals in a wireless communication system is disclosed. The method and apparatus includes reference signal, RS, transmission in resource blocks supporting multiple antenna port transmission, at least one broadcast channel being provided in resource blocks belonging to a first set of resource blocks, a first number of reference signals being transmitted in at least one resource block supporting multiple antenna port transmission and a second number of reference signals being transmitted in at least one resource block belonging to a second set of resource blocks. Preferably, different resource elements, REs, are used for each reference signal in resource blocks. An example embodiment of reference signal support of, e.g., eight antenna ports is provided.
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Citations
20 Claims
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1. A method of reference signal transmission in resource blocks (RBs) supporting multiple antenna port transmission in a wireless communication system, comprising:
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determining a first and a second mutually exclusive sets of RBs, at least one broadcast channel (BCH) being provided in RBs belonging to said first set of RBs; transmitting a number of reference signals (RSes) only in at least one RB belonging to said second set of RBs when a conflict between transmitting said number of RSes and providing said broadcast channel is detected, wherein each RB comprises at least one resource elements (REs); wherein the conflict between transmitting said number of RSes and providing said broadcast channel comprises;
REs to be used for transmitting said number of RSes and REs used for providing said broadcast channel overlap;wherein said RBs supporting multiple antenna port transmission are transmitted in subframes (SFs) supporting multiple antenna port transmission; and wherein said number of RSes are transmitted only in a subset of subframes which do not comprise the RBs belonging to said first set of RBs, wherein said number of RSes are transmitted in a same slot of said subset of subframes, and wherein said number of RSes are transmitted in every Mth RB in said same slot, where M is an integer that is greater than or equal to one. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus of reference signal transmission in resource blocks (RBs) supporting multiple antenna port transmission in a wireless communication system, the apparatus comprising:
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a processor configured to determine a first and a second mutually exclusive sets of RBs, and to provide at least one broadcast channel (BCH) in RBs belonging to said first set of RBs; and a transmitter configured to transmit a number of reference signals (RSes) only in at least one RB belonging to said second set of RBs when there is a conflict between transmitting said number of RSes and providing said broadcast channel is detected, wherein each RB comprises at least one resource elements (REs); wherein the conflict between transmitting said number of RSes and providing said broadcast channel comprises;
REs to be used for transmitting said number of RSes and REs used for providing said broadcast channel overlap;wherein said RBs supporting multiple antenna port transmission are transmitted in subframes (SFs) supporting multiple antenna port transmission; and wherein said number of RSes are transmitted only in a subset of subframes which do not comprise the RBs belonging to said first set of RBs, wherein said number of RSes are transmitted in a same slot of said subset of subframes, and wherein said number of RSes are transmitted in every Mth RB in said same slot, where M is an integer that is greater than or equal to one. - View Dependent Claims (9, 10)
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11. A method of reference signal transmission in resource blocks (RBs) supporting multiple antenna port transmission in a wireless communication system, comprising:
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determining a first and a second mutually exclusive sets of RBs, at least one synchronization signal (SS) being provided in RBs belonging to said first set of RBs; and transmitting a number of reference signals (RSes) only in at least one RB belonging to said second set of RBs when a conflict between transmitting said number of RSes and providing said SS is detected, wherein said at least one SS is a primary synchronization signal (P-SS), or a secondary synchronization signal (S-SS), wherein each RB comprises at least one resource elements (REs); wherein the conflict between transmitting said number of RSes and providing said broadcast channel comprises;
REs to be used for transmitting said number of RSes and REs used for providing said SS overlap;wherein said RBs supporting multiple antenna port transmission are transmitted in subframes (SFs) supporting multiple antenna port transmission; and wherein said number of RSes are transmitted only in a subset of subframes which do not comprise the RBs belonging to said first set of RBs, wherein said number of RSes are transmitted in a same slot of said subset of subframes, and wherein said number of RSes are transmitted in every Mth RB in said same slot, where M is an integer that is greater than or equal to one. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. An apparatus of reference signal transmission in resource blocks (RBs) supporting multiple antenna port transmission in a wireless communication system, the apparatus comprising:
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a processor configured to determine a first and a second mutually exclusive sets of RBs, and to provide at least one synchronization signal (SS) in RBs belonging to said first set of RBs; and a transmitter configured to transmit a number of reference signals (RSes) only in at least one RB belonging to said second set of RBs when a conflict between transmitting said number of RSes and providing said SS is detected, wherein said at least one SS is a primary synchronization signal (P-SS), or a secondary synchronization signal (S-SS), wherein each RB comprises at least one resource elements (REs); wherein the conflict between transmitting said number of RSes and providing said broadcast channel comprises; REs to be used for transmitting said number of RSes and REs used for providing said SS overlap; wherein said RBs supporting multiple antenna port transmission are transmitted in subframes (SFs) supporting multiple antenna port transmission; and wherein said number of RSes are transmitted only in a subset of subframes which do not comprise the RBs belonging to said first set of RBs, wherein said number of RSes are transmitted in a same slot of said subset of subframes, and wherein said number of RSes are transmitted in every Mth RB in said same slot, where M is an integer that is greater than or equal to one. - View Dependent Claims (19, 20)
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Specification