|Bandwidth will be freed up by the removal of BBC Three|
Some of BBC Three's bandwidth will be used to extend the CBBC channel by two hours, leaving spare capacity from 9pm every evening.
Currently, the CBBC channel takes over the bandwidth shortly after 5:30am and has historically used the time before it starts at 7am for promotional material. But the BBC says it's looking at uses for the full 9pm-7am time period.
Various options have been considered - covering both BBC and non-BBC use of the capacity - but these details have been withheld from public viewing. The BBC says it doesn't want to make any decisions until the BBC Trust has had their final say.
There would be two slots available - one freed up by the removal of BBC Three in standard definintion and one slot freed by the HD version of the channel. The SD slot on Freeview can't be commercialised as it is on capacity gifted to the BBC under the Royal Charter, but there are options available on the Freeview HD capacity. The equivalent capacity on satellite has no restrictions on re-use for either BBC or non-BBC services.
The BBC would not have any control over any freed up space on cable, as the capacity would fall back under the control of cable operators.
The freed capacity is separate to the channel numbers that BBC Three currently occupies - whatever uses the ex-BBC Three capacity wouldn't automatically take BBC Three's channel numbers.
The BBC Trust is currently undertaking a second public consultation on BBC Three and the BBC Executive proposes to launch a temporary BBC Three Online promo channel between mid-January and the end of February 2016 to ease the transition.
Is this the bandwidth that BBC One+1 was supposed to use?
Earlier plans to use BBC Three's evening bandwidth for the doomed timeshift service were considered and discarded.
Because BBC Three timeshares with CBBC and the BBC wanted BBC One+1 to be 24/7, the timeshift channel was to take additional bandwidth - although some media outlets continue to associate the BBC Three bandwidth with BBC One+1.
Basically, the bandwidth discussed in the BBC Executive's proposals published today has nothing to do with the capacity that would have been used for BBC One+1.
BBC One+1 was due to use the bandwidth on Freeview that this year was used to broadcast the extra BBC Red Button streams during Glastonbury and Wimbledon (BBC RB2 and BBC RB3 - channels 602 and 603 on Freeview HD compatible devices). Effectively the BBC wanted to squat a standard definition channel on its Freeview multiplex that is set up for HD channels. (It has no space to accommodate another 24/7 service on the BBC's standard definition multiplex.)
The multiplex concerned is called BBC-B or PSB3. Technically, now that BBC One+1 won't need the bandwidth, there's room for the BBC to retain a slot on BBC-B for an extra Red Button stream during major sporting events, plus room for another HD channel - there's nearly 10Mbps of empty capacity available 24/7 on BBC-B, that's before the current BBC Three HD capacity becomes vacant. ITV, STV, UTV and Channel 4 use two HD slots on the multiplex for their services, Channel 5 hasn't yet confirmed whether it will be launching Channel 5 HD on Freeview anytime soon.