Abstract: Various communication systems may benefit from an accurate detection method. The method may include determining correlation values between a first sequence of samples and at least one pre-defined sequence, detecting whether at least one first peak exists by comparing the correlation values with at least one first detection threshold. If the at least one first peak exists, the method may further include performing summing of at least a subset of the correlation values and detecting whether at least one second peak exists by comparing the summed correlation values with a second detection threshold.

Abstract: Various communication systems may benefit from an accurate cell detection method. The method may include determining at least one first correlation value between a first sequence of received samples and at least one pre-defined sequence, determining at least one second correlation value between a second sequence of received samples at a predetermined distance and the at least one pre-defined sequence, wherein the predetermined distance is substantially more than one symbol and substantially less than two symbols, performing summing of at least the at least one first correlation value and the at least one second correlation value to obtain at least one summed correlation value and detecting whether at least one peak exists by comparing the at least one summed correlation value with a detection threshold.

Abstract: Various communication systems may benefit from an accurate detection method. The method may include determining correlation values between a first sequence of samples and at least one pre-defined sequence, detecting whether at least one first peak exists by comparing the correlation values with at least one first detection threshold. If the at least one first peak exists, the method may further include performing summing of at least a subset of the correlation values and detecting whether at least one second peak exists by comparing the summed correlation values with a second detection threshold.

Abstract: Communication systems in which a fixed size information block is transmitted to one or multiple receivers, such as the long term evolution (LTE) of the 3rd Generation Partnership Projection (3GPP), may benefit from a structure, in which a downlink control information (DCI) format, or more generally the fixed sized information block, can be extended by a small number of bits and still be backwards compatible with older terminals, which do not need the extra bits or may not even be aware of this extension. A method for providing this extension can include preparing a first codeword for transmission. The method can also include preparing a second codeword for transmission. The second codeword can have a code rate that is configured to be less than the code rate of the first codeword. The method can further include initiating simultaneous transmission of the first codeword and the second codeword.

Abstract: One embodiment is directed to a method comprising determining to initiate a session; sending a first message over a channel in a subframe dedicated for initiating sessions; and transmitting an information indicating the resource where the next transmission of the session will happen.

Abstract: A network signals an allocation (PDCCH) for a downlink shared channel (PDSCH); and also signals an indication (reference signal RS) whether a resource block (PRB) comprising the allocated downlink shared channel is used for a control channel transmission (E-PDCCH). Examples include the E-PDCCH being time or frequency multiplexed with the PDSCH; and the indication being a different RS sequence (at least one element being phase shifted) than an original RS sequence used if the PRB were not used for the E-PDCCH. The UE tests for the phase shift by blind decoding. If the phase shift is present the UE a) decodes a portion of the PRB for data if the network is using TDM for its E-PDCCH/PDSCH multiplexing, orb) decodes the full PRB only for the E-PDCCH if the network is using FDM for its E-PDCCH/PDSCH multiplexing.

Abstract: An apparatus includes one or more processor and one or more memories including computer program code. The one or more memories and the computer program code are configured to, with the one or more processors and in response to execution of the computer program code, cause the apparatus to perform at least the following: accessing in an enhanced downlink control region of a downlink subframe a downlink control channel message corresponding to the apparatus, wherein the downlink control channel message corresponding to the apparatus occupies two or more physical resource blocks contiguous in one or both of time and frequency; and accessing or not accessing a portion specific to the apparatus of a physical downlink shared channel in the downlink subframe, depending in least in part on the determined downlink control channel message. Additional apparatus, methods, and computer products are disclosed.

Abstract: Communication systems in which a fixed size information block is transmitted to one or multiple receivers, such as the long term evolution (LTE) of the 3rd Generation Partnership Projection (3GPP), may benefit from a structure, in which a downlink control information (DCI) format, or more generally the fixed sized information block, can be extended by a small number of bits and still be backwards compatible with older terminals, which do not need the extra bits or may not even be aware of this extension. A method for providing this extension can include preparing a first codeword for transmission. The method can also include preparing a second codeword for transmission. The second codeword can have a code rate that is configured to be less than the code rate of the first codeword. The method can further include initiating simultaneous transmission of the first codeword and the second codeword.

Abstract: Frequency resources for common control regions of a control channel are defined or determined as a function of at least bandwidth and an identifier of a specific cell. Communications between a wireless network and a mobile device are then done using the defined/determined frequency resources of the common control regions of the control channel. In the non-limiting embodiments: the bandwidth is bandwidth of a cell or of a component carrier; the frequency resources are defined/determined further as a function of an offset value; the common control regions are of an ePDCCH and the offset value differs from a channel edge offset value for common control regions of all other ePDCCHs of all other adjacent cells or all other transmit nodes in the same cell; and the frequency resources comprise frequency stripes (which may be interleaved by resource element groups) distributed in frequency across the bandwidth.

Abstract: A network signals an allocation (PDCCH) for a downlink shared channel (PDSCH); and also signals an indication (reference signal RS) whether a resource block (PRB) comprising the allocated downlink shared channel is used for a control channel transmission (E-PDCCH). Examples include the E-PDCCH being time or frequency multiplexed with the PDSCH; and the indication being a different RS sequence (at least one element being phase shifted) than an original RS sequence used if the PRB were not used for the E-PDCCH. The UE tests for the phase shift by blind decoding. If the phase shift is present the UE a) decodes a portion of the PRB for data if the network is using TDM for its E-PDCCH/PDSCH multiplexing, orb) decodes the full PRB only for the E-PDCCH if the network is using FDM for its E-PDCCH/PDSCH multiplexing.

Abstract: In one non-limiting, exemplary embodiment, a method includes: receiving a message including a resource allocation map having a first portion and a second portion; utilizing the first portion to determine a specific mapping scheme of a plurality of mapping schemes, wherein the determined specific mapping scheme is used for the second portion; and obtaining, based on the determined specific mapping scheme, resource allocation information based on the second portion. In another non-limiting, exemplary embodiment, a method includes: generating a message including a resource allocation map having a first portion and a second portion, wherein the first portion is indicative of a specific mapping scheme of a plurality of mapping schemes that are applicable to the second portion; and transmitting the generated message.

Abstract: An apparatus includes one or more processor and one or more memories including computer program code. The one or more memories and the computer program code are configured to, with the one or more processors and in response to execution of the computer program code, cause the apparatus to perform at least the following: accessing in an enhanced downlink control region of a downlink subframe a downlink control channel message corresponding to the apparatus, wherein the downlink control channel message corresponding to the apparatus occupies two or more physical resource blocks contiguous in one or both of time and frequency; and accessing or not accessing a portion specific to the apparatus of a physical downlink shared channel in the downlink subframe, depending in least in part on the determined downlink control channel message. Additional apparatus, methods, and computer products are disclosed.

Abstract: In accordance with an exemplary embodiment of the invention, one or more first channels and one or more second channels are stored in a linear buffer. More specifically, the one or more first channels are stored in a first primary region of the linear buffer, and the one or more second channels are stored in a second primary region of the linear buffer, where if the second primary region is not large enough to store all of the second channels, one or more excess second channels are stored in a secondary area of the linear buffer.

Abstract: In accordance with the exemplary embodiments of the invention there is at least a method, apparatus, and computer program configured to compose signaling to include a component carrier indicator in a content of a downlink control information only when a size of an original part of a downlink control information on a scheduling component carrier is larger than or equal to an individual size of any corresponding downlink control information on at least one cross-scheduled component carrier, and to transmit the composed signaling to at least one user equipment.

Abstract: The exemplary embodiments of this invention provide a multi-stage approach, where, for example, one number can signal a first type of resource allocation (e.g., a consecutive allocation) or a second type of resource allocation (e.g., a best-M allocation based on best-M channel quality information). In one exemplary embodiment, a method includes: allocating a plurality of resource blocks to obtain a resource allocation; and signaling the resource allocation using an n-bit number, where the n-bit number expresses a value from an overall range of values having a first range of values and a second range of values, where a value within the first range of values specifies a first type of resource allocation and where a value within the second range of values specifies a second type of resource allocation, where the first type of resource allocation is different from the second type of resource allocation.

Abstract: A set of J predetermined power level offsets that scale transmission power per user are stored in a local computer-readable memory. A set of N users to which are allocated overlapping downlink frequency resources are selected. From the stored set is then selected a power level offset. An indication of the selected power level offset is signaled to at least one of the N users; and the at least one of the N users are also sent a multiplexed transmission using the selected power level offset. N is an integer at least equal to two, J is an integer at least equal to two, and at least one member of the set is other than 1/n in which n is any positive integer less than Nmax in which Nmax is a maximum number of users that can be multiplexed together. Various embodiments include an apparatus such as a network access node, a method, and a stored computer program. Also detailed are apparatus and method and stored computer program for practicing the invention from the perspective of the user/UE.

Abstract: A method includes receiving a first control information from a network access node, the first control information comprising a plurality of fields defining control information elements that are relevant to a resource allocation; receiving a second control information from the network access node, the second control information comprising a plurality of fields defining control information elements that are relevant to the resource allocation; and declaring the resource allocation to be a persistent resource allocation if at least one of the plurality of fields of the second control information is the same as one of the plurality of fields of the first control information. Also disclosed are computer programs and apparatus for carrying out the method, as well as a network access node configured to compose first control information and second control information for expressing resource allocations.

Abstract: In one non-limiting, exemplary embodiment, a method includes: receiving a message including a resource allocation map having a first portion and a second portion; utilizing the first portion to determine a specific mapping scheme of a plurality of mapping schemes, wherein the determined specific mapping scheme is used for the second portion; and obtaining, based on the determined specific mapping scheme, resource allocation information based on the second portion. In another non-limiting, exemplary embodiment, a method includes: generating a message including a resource allocation map having a first portion and a second portion, wherein the first portion is indicative of a specific mapping scheme of a plurality of mapping schemes that are applicable to the second portion; and transmitting the generated message.

Abstract: The invention relates to a radio transmitter using QAM modulation, comprising a first transmit filter for filtering data symbols to be transmitted to form a waveform, means for comparing the waveform to a predetermined threshold value, means for clipping power peaks that exceed the predetermined threshold value from the waveform to form a clipped waveform, means for multiplying the clipped power peaks with an impulse response of a receive filter to form an impaired signal, means for subtracting the impaired signal from the data symbols to be transmitted to form subtracted data symbols, a second transmit filter for filtering the reduced data symbols to form a modulated signal, and means for up-converting the modulated signal to a transmission frequency.

Abstract: The invention relates to a radio transmitter using QAM modulation, comprising a first transmit filter for filtering data symbols to be transmitted to form a waveform, means for comparing the waveform to a predetermined threshold value, means for clipping power peaks that exceed the predetermined threshold value from the waveform to form a clipped waveform, means for multiplying the clipped power peaks with an impulse response of a receive filter to form an impaired signal, means for subtracting the impaired signal from the data symbols to be transmitted to form subtracted data symbols, a second transmit filter for filtering the reduced data symbols to form a modulated signal, and means for up-converting the modulated signal to a transmission frequency.