Two consequential issues raised:

1. An agenda item at WRC-07 dealt with the use of the band 10.6-10.68 GHz by the EES (passive) service. The Conference approved a draft new Resolution that placed mitigation measures (technical and operational constraints) on both the EES (passive) and the FS to facilitate sharing in the band. • Five meetings of the Working Group from April 14 to June 26. • Number of changes proposed. • Final document available on-line

2. Two consequential issues raised: • Whether the 10.5 GHz band should be re-designated from LC to MC (Proposal by Ericsson) • ATPC is a requirement for this band. IC would welcome RABC input RE general use of Automatic Transmit Power Control by FS systems

3. MC • This standard provides technical requirements for the use of Low Capacity (LC) point-to-point and Multipoint Communication Systems (MCS) systems in frequency band 10550­10680 MHz. • The use of point-to-point links was permitted in one pair of 20 MHz spectrum and MCS in another pair of 20 MHz spectrum and the remaining one pair of 25 MHz spectrum was able to be used for either point-to-point or MCS, on a first-come first-served basis. • This restriction will be removed from the SRSP when it is revised. • For point-to-point systems, RF channels currently allowed are: 1.25 MHz, 2.5 MHz and 5 MHz with a 65 MHz duplex distance. For MCS, minimum channel bandwidth is 2.5 MHz however, users can apply for a channel bandwidth that is a multiple of 2.5 MHz.

4. Considering: • Evolution in mobile communication systems from second generation to third generation and then fourth generation require ever increased capacity for microwave transmission for backhaul. • Advanced modulation techniques as well as the use of special frame formats for transmission of native Ethernet traffic allow efficient use of spectrum. In particular for this band, Medium (MC) and High Capacity (HC) equipment are available for various markets around the world, based on ITU Recommendation F.1568. Canadian equipment manufacturers and users also wish to be able to take advantage of this internationally adopted specification. • Last but not least, future advances in digital modulation techniques may allow even higher bit rates, all within existing channel plans. • Taking into account the above, RABC would like to submit a request to adopt the following changes to SRSP-310.5: • Add the MC the designation of this band addition to LC: According to SP 1-20 GHz, the current definition of Low Capacity systems comprises payload bit rates between 1.544Mbps (1 x T1) and 24.704 Mbps (16 x T1). Current technology based on higher order modulations such as 128QAM, together with advanced frame formats and a wider channel can offer medium capacity (MC) transmission, up to 51 Mbps, while maintaining very good spectral efficiency. • Include a new radio channel arrangement, based on 10 MHz carrier spacing for both point-to-point and MCS systems: This arrangement would allow efficient use of spectrum and offer Medium Capacity (MC) links with up to 51 Mbps, without an increased cost incurred by the use multiple radios and RF combiners/splitters.

5. ATPC • On IC’s list of to-do’s and would welcome RABC input on how ATPC should be treated. • Since ATPC will be mandated in this band, it will be beneficial for industry to have technical guidance on ATPC characteristics and usage, such as in frequency coordination situations. • ATPC potentially affects several areas / bands in addition to this working group. Consequently this subject should be brought to the attention of the Fixed Wireless Committee at its next meeting to gauge the level of interest and determine possible next steps by the RABC.