name: CA
full_form: Carrier Aggregation
context: The requirements for carrier aggregation in this specification are defined for carrier aggregation configurations with associated bandwidth combination sets. For inter-band carrier aggregation, a carrier aggregation configuration is a combination of operating bands, each supporting a carrier aggregation bandwidth class. For intra-band contiguous carrier aggregation, a carrier aggregation configuration is a single operating band supporting a carrier aggregation bandwidth class. For each carrier aggregation configuration, requirements are specified for all bandwidth combinations contained in a bandwidth combination set, which is indicated per supported band combination in the UE radio access capability. A UE can indicate support of several bandwidth combination sets per band combination. Requirements for intra-band contiguous carrier aggregation are defined for the carrier aggregation configurations and bandwidth combination sets specified in Table 5.6A.1-1. Requirements for inter-band carrier aggregation are defined for the carrier aggregation configurations and bandwidth combination sets specified in Table 5.6A.1-2, Table 5.6A.1-2a, Table 5.6A.1-2b and Table 5.6A.1-2c. Requirements for intra-band non-contiguous carrier aggregation are defined for the carrier aggregation configurations and bandwidth combination sets specified in Table 5.6A.1-3. The DL component carrier combinations for a given CA configuration shall be symmetrical in relation to channel centre unless stated otherwise in Table 5.6A.1-1, Table 5.6A.1-2, Table 5.6A.1-2a, Table 5.6A.1-2b and Table 5.6A.1-2c. Table 5.6A.1-1: E-UTRA CA configurations and bandwidth combination sets defined for intra-band contiguous CA Table 5.6A.1-2: E-UTRA CA configurations and bandwidth combination sets defined for inter-band CA (two bands) Table 5.6A.1-2a: E-UTRA CA configurations and bandwidth combination sets defined for inter-band CA (three bands) Table 5.6A.1-2b: E-UTRA CA configurations and bandwidth combination sets defined for inter-band CA (four bands) Table 5.6A.1-2c: E-UTRA CA configurations and bandwidth combination sets defined for inter-band CA (five bands) Table 5.6A.1-2d: E-UTRA CA configurations and bandwidth combination sets defined for inter-band CA (six bands) Table 5.6A.1-3: E-UTRA CA configurations and bandwidth combination sets defined for non-contiguous intra-band CA (with two sub-blocks) Table 5.6A.1-4: E-UTRA CA configurations and bandwidth combination sets defined for non-contiguous intra-band CA (with three sub-blocks) Table 5.6A.1-5: E-UTRA CA configurations and bandwidth combination sets defined for non-contiguous intra-band CA (with four sub-blocks)
description: Carrier Aggregation (CA) is a technology in wireless communication that allows multiple carriers to be combined, increasing the overall bandwidth available to mobile devices. This technique enables the efficient use of spectrum resources by aggregating multiple component carriers, each operating on a different frequency band or within the same band but with non-contiguous allocations. The requirements and configurations for carrier aggregation are specified in 3GPP standards, including definitions for intra-band contiguous, inter-band, and intra-band non-contiguous carrier aggregation scenarios.
explanation: CA is classified under Technology because it represents a specific method or technique used within telecommunications to enhance network performance and user experience. It involves the combination of multiple carriers to achieve higher data rates and better spectral efficiency, aligning with the broader goals of improving wireless communication technologies as outlined in 3GPP specifications.
section_title: 5.6A.1 Channel bandwidths per operating band for CA
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